Final Testnetexplorer K_J · Final Testnet · 48359
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Contract

0x66795946fb6cd2eb54916fdbbe64bddc5005e86b

Address
0x66795946fb6cd2eb54916fdbbe64bddc5005e86b
Kind
verified contract FinalSlotKeyRegistry
Balance
0 vETH
Nonce
1
Code
5,531 bytes codehash 0x718949bdaa0c08a4bd1969662e3e5bdd46d52fc9c336b50af58d0c373170153b

account tree

Tree
1 · accounts
Present
no leaf
Key
0xf70742a9c53c7038f2cd34d512d17c5b16bfb9abb9028a9ea8cf6bd9f8d88379
Live root
0x6d72b53fa4ff33a006dbb1e62210da0466cea22c427258ba677493791d7c7734
This address holds no leaf in the account tree. Every Final Wallet — service identities included — has one, so an absent leaf means an ordinary account rather than a wallet.
transactionseventstoken transferscontract

source verified

Contract
FinalSlotKeyRegistry exact match · immutables masked
Compiler
v0.8.33+commit.64118f21
Optimizer
enabled · 200 runs
EVM version
prague
Verified
2026-09-13T13:30:43.480Z
Provenance
preverify-final-chain (forge artifact, bytecode compared against live code)

contracts/finalchain/FinalCertificate.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may link against and call this certificate reader,
//    and may encode certificates that it accepts, as part of the Final DeFi
//    Protocol.
// 2. Operators, integrators, and end users may have their certificates parsed,
//    self-checked, and verified through any Final DeFi surface that links it.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this certificate reader or a competing identity
//    certificate format derived from it without permission prior to the
//    Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

import {FinalChainPrecompiles} from "./FinalChainPrecompiles.sol";
import {FinalChainTime} from "./FinalChainTime.sol";

/**
 * @title Final Certificate
 * @notice Reads a Final Certificate on chain and self-checks it, so a certificate's keys can never be
 *         anything other than the keys it declares.
 * @dev Deployed only as part of this project's own reth-based state plane, and only on the reth-based chains
 *      that carry the precompiles it calls: SHA3-256 at `0x0202`, ML-DSA-87 at `0x0204` and
 *      SLH-DSA-SHAKE-256s at `0x0205`, each address being that primitive's FIPS number. The contracts it is
 *      linked into probe those precompiles at construction and refuse to exist where they are absent, so
 *      this library never runs somewhere its verdicts would be meaningless. It takes part in no CREATE2
 *      derivation, and nothing outside this directory imports it.
 *
 *      The SHA3 precompile is not a convenience: the certificate format hashes with FIPS-202 SHA3 and the
 *      EVM's `keccak256` is a DIFFERENT function, so a digest computed with the wrong one matches no
 *      certificate any issuer ever wrote.
 *
 *      ## Why the chain parses this at all
 *
 *      The alternative is taking the TBS bytes and the public keys as separate arguments and deriving
 *      `certHash` from the bytes. That looks like verification and is not: nothing compares the keys to the
 *      certificate, so a registrar could bind any certificate to any keypair, the registry would hold a key
 *      the certificate does not contain, and every signature that key produced would verify against a
 *      certificate that never authorised it.
 *
 *      So the keys are read OUT of the certificate. There is one input, and no pair of arguments that can
 *      disagree.
 *
 *      Gas is deliberately not a design constraint on the chain this runs on and must not be optimised for.
 *      Parsing and re-hashing on chain costs more than trusting a parse done elsewhere and buys a verdict
 *      that is re-derivable from public state, which is the trade this whole plane is built on.
 *
 *      ## The key-identifier check
 *
 *      A certificate declares `SubjectKeyId` as the SHA3-256 digest of its `PublicKeyBlock`. Having parsed
 *      that block, {parse} recomputes the digest and compares. The field sits inside the TBS, so it is
 *      covered by the issuer's signatures — which makes the check a statement about what the issuer
 *      attested, not merely about internal consistency of bytes the caller supplied.
 *
 *      ## Deploy-linked, not inlined
 *
 *      {parseLive}, {parseRecovery}, {parseCa} and {verifyIssuerSignatures} are `external`, so the identity
 *      registry calls them across a link boundary rather than carrying them in its own bytecode, which it
 *      has no room for. The link target is fixed at deployment: a linked library is code, not a pointer
 *      anyone can move afterwards.
 *
 *      ## What this library deliberately does not do
 *
 *      It does not verify an issuer's signatures over the TBS as part of parsing, and it does not walk a
 *      certificate chain to the root. On the registration path there is nothing to walk — a chain-attested
 *      certificate is admitted by this chain against pinned issuer constants and the holder's own proof of
 *      possession, so an issuer signature is not what makes it valid. {verifyIssuerSignatures} is here for
 *      callers verifying an off-chain issuance, and it verifies exactly what it is handed.
 *
 *      It also does not check an encapsulation key's length or structure. Those are checked where they are
 *      REGISTERED, by the precompiles that own the answer, because two checks of one thing in two shapes is
 *      how one of them ends up weaker and nobody notices which.
 */
library FinalCertificate {
    /// @notice The four magic bytes every certificate opens with, `"PQCF"`.
    uint32 internal constant MAGIC = 0x50514346;
    /// @notice The current wire generation, which encoders write.
    /// @dev A generation this parser does not know fails to parse rather than being reinterpreted: the
    ///      folded key commitment, and therefore every wallet address, derives from this exact layout, so a
    ///      layout read under the wrong generation would produce a self-consistent digest that matches
    ///      nothing.
    uint32 internal constant VERSION = 2;
    /// @notice The previous wire generation, still accepted on parse.
    /// @dev Reading an older artifact is not the same as admitting it. Whether such a certificate may be
    ///      REGISTERED is settled at admission, by the holder's proof of possession and the chain-issuer
    ///      pins, rather than by refusing to decode it.
    uint32 internal constant VERSION_V4 = 1;

    /// @notice The institution identity extension, which carries an issuer's legal name, registration
    ///         number and jurisdiction.
    uint16 internal constant EXT_INSTITUTION = 0x0102;

    /// @notice ML-KEM-1024 (FIPS 203), the lattice half of the encapsulation pair.
    /// @dev Algorithm identifiers ARE the FIPS numbers, in one space shared by signatures and encapsulation
    ///      — the same identifiers the quorum wire format uses, and the numbers the precompile addresses end
    ///      in. One space rather than two means an identifier can never be read against the wrong table.
    uint16 internal constant ALG_ML_KEM_1024 = 0x0003;
    /// @notice ML-DSA-87 (FIPS 204). Transaction class.
    uint16 internal constant ALG_ML_DSA_87 = 0x0004;
    /// @notice SLH-DSA-SHAKE-256s (FIPS 205). Access class, and the seal.
    uint16 internal constant ALG_SLH_DSA_SHAKE_256S = 0x0005;
    /// @notice FN-DSA (FIPS 206). Reserved: there is no implementation behind it and it is never accepted in
    ///         a slot.
    uint16 internal constant ALG_FN_DSA = 0x0006;
    /// @notice HQC-5 (FIPS 207), the code-based half of the encapsulation pair.
    uint16 internal constant ALG_HQC_5 = 0x0007;

    /// @notice Certificate signing, for both of an issuer's keys.
    /// @dev Says which key to verify WITH; it grants nothing on its own — capability to issue comes from the
    ///      depth pair.
    uint16 internal constant PURPOSE_CERT_SIGNING = 0x0004;

    /// @notice The live stage's transaction-class slot, ML-DSA-87.
    /// @dev A wallet holds four slots in two stages of two, and a certificate carries ONE stage, never all
    ///      four. The stage is what is issued, rotated and revoked as a unit, and a holder presenting a live
    ///      certificate presents both of that stage's keys or neither — splitting them per slot would let
    ///      half a stage be presented as if it were whole.
    /// @dev This applies to services exactly as it applies to a user's wallet. A co-signer is a Final
    ///      Wallet: same four slots, same split, same algorithms. There is no second kind of identity in
    ///      this system.
    uint16 internal constant PURPOSE_ACTIVE_TX = 0x0010;
    /// @notice The live stage's access-class slot, SLH-DSA-SHAKE-256s.
    uint16 internal constant PURPOSE_ACTIVE_ACCESS = 0x0011;
    /// @notice The recovery stage's transaction-class slot, ML-DSA-87.
    uint16 internal constant PURPOSE_RECOVERY_TX = 0x0012;
    /// @notice The recovery stage's access-class slot, SLH-DSA-SHAKE-256s.
    uint16 internal constant PURPOSE_RECOVERY_ACCESS = 0x0013;
    /// @notice The live stage's encapsulation slot.
    /// @dev Each stage's encapsulation pair is resolved alongside its signing pair, and the identity
    ///      registry stores both halves, so a sender can encapsulate to a registered party without a second
    ///      lookup somewhere less authoritative. Both halves sit under ONE purpose and are told apart by
    ///      algorithm, which is why the key loop matches on the `(purpose, algorithm)` pair.
    uint16 internal constant PURPOSE_ACTIVE_KEM = 0x0014;
    /// @notice The recovery stage's encapsulation slot, carrying the same two algorithms.
    uint16 internal constant PURPOSE_RECOVERY_KEM = 0x0015;
    /// @notice The seal purpose: a second SLH-DSA-SHAKE-256s key that co-signs membership-class quorum
    ///         decisions (the registrar quorum); operational quorum actions take the ML-DSA-87 vote alone.
    /// @dev Distinct from the access key, and carried by SERVICE certificates only — a user's wallet never
    ///      seals. Optional in the format, so a certificate without it parses unchanged.
    /// @dev Outside the folded key commitment: a seal is operational, rotated by issuing a new live
    ///      certificate, and it must not move a wallet address it plays no part in deriving.
    uint16 internal constant PURPOSE_ACTIVE_SEAL = 0x0016;

    /// @notice A sentinel purpose no certificate can carry.
    /// @dev Lets {parse} be told "this stage has no encapsulation slot" without a second boolean argument.
    ///      `0xffff` is outside the purpose registry and is reserved by being used here.
    uint16 internal constant NO_KEM_PURPOSE = 0xffff;

    /// @notice Nanoseconds per millisecond, the conversion from a certificate's validity fields to this
    ///         chain's clock.
    /// @dev A certificate stamps validity in NANOseconds and this chain's clock is MILLIseconds, so the
    ///      parser divides by 1e6 on the way in and nothing downstream ever compares across units. Getting
    ///      the divisor wrong does not fail loudly: it shifts every window by three orders of magnitude, so
    ///      every certificate reads as already valid, including one issued for the future.
    uint64 internal constant NS_PER_MILLISECOND = FinalChainTime.NS_PER_MILLISECOND;

    /**
     * @title Parsed
     * @notice What the chain keeps out of one certificate.
     * @dev Every field is read OUT of the TBS. Nothing here can be supplied alongside the bytes, which is
     *      what makes it impossible for a caller to bind a certificate to material the certificate does not
     *      contain.
     */
    struct Parsed {
        /// `SHA3-256` of the TBS bytes: the certificate's own identity, and the handle revocation is keyed
        /// on.
        bytes32 certHash;
        /// The certificate's 32-byte serial. A serial is per certificate SET, so the two stages of one
        /// wallet share it and two stages that disagree are two different wallets.
        bytes32 serial;
        /// keccak256 of the issuer-name bytes, for the chain-issuer pin: a chain-attested certificate
        /// carries the chain's own constant issuer name, and the registry compares one hash rather than two
        /// strings.
        bytes32 issuerDnHash;
        /// The subject-name bytes verbatim. Kept whole rather than hashed because the jurisdiction rule
        /// reads its country component at issuer registration.
        bytes subjectDn;
        /// The institution extension's VALUE, when present; empty otherwise. Issuer registration parses
        /// the declared jurisdiction out of it and requires it to match the subject name's country.
        bytes institutionExt;
        /// SHA3-256 of the ISSUER's public key block. Zero-length — and so
        /// `bytes32(0)` here — for exactly one certificate in the hierarchy,
        /// which is what terminates chain validation.
        bytes32 authorityKeyId;
        /// SHA3-256 of this certificate's own public key block. The child's
        /// `authorityKeyId` must equal it, which is what links the two.
        bytes32 subjectKeyId;
        /// Position on the delegation axis; 0 is the chain's own root.
        uint8 depth;
        /// Deepest level this key may issue to. `== depth` means it signs no certificates at all, which is
        /// every end entity. The pair is immutable per certificate, which is why consumers discriminate
        /// record kinds by it rather than by a role bit.
        uint8 maxDelegationDepth;
        /// MILLISECONDS, converted from the schema's nanoseconds — this chain's clock.
        uint64 notBefore;
        /// Milliseconds. Zero means never expires, which the schema allows.
        uint64 notAfter;
        /// The stage's transaction-class key. ML-DSA-87 — spending, and every
        /// high-cadence protocol action.
        bytes transactionKey;
        /// The stage's access-class key. SLH-DSA-SHAKE-256s — identity,
        /// rotation, recovery-pair promotion. A different hardness assumption,
        /// so a lattice break leaves the key that governs identity standing.
        bytes accessKey;
        /// The stage's ML-KEM-1024 encapsulation key. Empty on a CA, which has
        /// no encapsulation stage, and on any v4 certificate issued without
        /// one — see `parse` for why that is tolerated rather than refused.
        bytes kemMlKem;
        /// The stage's HQC-5 encapsulation key. Carried under the SAME purpose
        /// as the lattice half and distinguished only by algorithm, which is
        /// why the parser matches on the `(purpose, algorithm)` pair.
        bytes kemHqc;
        /// The service's seal key (`PURPOSE_ACTIVE_SEAL`, SLH-DSA-SHAKE-256s).
        /// Empty on every certificate that does not carry one — a user wallet,
        /// a recovery stage, a CA.
        bytes sealKey;
        /// Where the TBS ends, so a caller holding the whole certificate can
        /// find the `SignatureBlock` without parsing forward again.
        uint256 tbsLength;
    }

    /// @notice The bytes do not open with the certificate magic, so they are not a certificate at all.
    /// @param got The four bytes that were present.
    error BadMagic(uint32 got);
    /// @notice The wire generation is one this parser does not read.
    /// @param got The generation the certificate declares.
    error BadVersion(uint32 got);
    /// @notice The TBS ends before a field the parser was about to read.
    /// @param needed The offset the read required.
    /// @param got The length actually supplied.
    error Truncated(uint256 needed, uint256 got);
    /// @notice The recomputed key-block digest does not equal the one the certificate declares, so the keys
    ///         present are not the keys the issuer attested.
    /// @param derived The digest recomputed from the key block.
    /// @param declared The digest the certificate carries.
    error SubjectKeyIdMismatch(bytes32 derived, bytes32 declared);
    /// @notice A stage is missing a key it must carry, or carries half of a pair that is issued whole.
    /// @param purpose The purpose whose slot is unfilled.
    error MissingSlot(uint16 purpose);
    /// @notice A slot carries a key of the wrong scheme. It would verify cryptographically and mean
    ///         something else entirely, which is exactly what splitting the classes exists to prevent.
    /// @param purpose The slot's purpose.
    /// @param algorithm The algorithm identifier that was present.
    error WrongAlgorithmForSlot(uint16 purpose, uint16 algorithm);
    /// @notice Two key entries share one `(purpose, algorithm)` pair, so one would silently shadow the
    ///         other.
    /// @param purpose The repeated purpose.
    /// @param algorithm The repeated algorithm identifier.
    error DuplicateKey(uint16 purpose, uint16 algorithm);
    /// @notice The key entries are not in ascending `(purpose, algorithm)` order. The schema requires that
    ///         order so `certHash` is reproducible across implementations.
    error KeysNotSorted();
    /// @notice A signing key whose length is not the one its algorithm defines.
    /// @param algorithm The algorithm identifier the entry declares.
    /// @param length The key length that was present.
    error BadKeyLength(uint16 algorithm, uint256 length);
    /// @notice A delegation bound shallower than the certificate's own depth, which admits nothing.
    /// @param depth The certificate's position on the delegation axis.
    /// @param maxDelegationDepth The deepest level it claims to issue to.
    error InvalidDepth(uint8 depth, uint8 maxDelegationDepth);
    /// @notice A certificate that expires no later than it begins.
    /// @param notBefore The declared start, in the schema's nanoseconds.
    /// @param notAfter The declared end, in the schema's nanoseconds.
    error ValidityInverted(uint64 notBefore, uint64 notAfter);

    /**
     * @notice Parse and self-check a `TBSCertificate`.
     * @dev Checking for a CAPABILITY rather than a type is the certificate schema's own rule, and the reason
     *      there is no type field to check instead. Passing the LIVE purposes to a recovery certificate
     *      finds neither key and reverts — which is what stops a recovery certificate being registered as a
     *      live one and handing the recovery pair everyday authority.
     *
     *      Self-check means the declared `SubjectKeyId` is recomputed from the key block that follows it and
     *      compared. That field is inside the TBS and therefore covered by the issuer's signatures, so the
     *      comparison turns "these bytes decode" into "the issuer attested these exact keys". Doing it on
     *      chain costs one precompile call and buys a verdict any reader can recompute; gas is not a design
     *      constraint on the chain this runs on, and must not be traded for a check that would then have to
     *      be taken on trust from whichever process ran it.
     *
     *      A stage is issued as a unit, so both of a stage's signing keys must be present, and its
     *      encapsulation pair must be present in full or absent in full.
     * @param tbs the TBS bytes, verbatim. Not the whole certificate.
     * @param txPurpose the transaction-class purpose this stage should carry.
     * @param accessPurpose the access-class purpose for the same stage.
     * @param kemPurpose the encapsulation purpose for the same stage, or {NO_KEM_PURPOSE} for a stage that
     *        has none.
     * @return out The parsed certificate: digest, serial, names, key identifiers, depth pair, validity
     *         window, and every key slot the stage carries.
     */
    function parse(bytes calldata tbs, uint16 txPurpose, uint16 accessPurpose, uint16 kemPurpose)
        internal
        view
        returns (Parsed memory out)
    {
        _need(tbs, 58);
        if (uint32(bytes4(tbs[0:4])) != MAGIC) revert BadMagic(uint32(bytes4(tbs[0:4])));
        // Both live wire generations parse. An artifact issued under the older one is read rather than
        // refused; whether it may be ADMITTED is a separate question, settled at registration by the
        // holder's proof of possession and the chain-issuer pins.
        uint32 wireVersion = uint32(bytes4(tbs[4:8]));
        if (wireVersion != VERSION && wireVersion != VERSION_V4) revert BadVersion(wireVersion);

        out.certHash = FinalChainPrecompiles.sha3_256(tbs);
        out.serial = bytes32(tbs[8:40]);
        out.depth = uint8(tbs[40]);
        out.maxDelegationDepth = uint8(tbs[41]);

        uint64 notBeforeNs = uint64(bytes8(tbs[42:50]));
        uint64 notAfterNs = uint64(bytes8(tbs[50:58]));
        if (out.maxDelegationDepth < out.depth) {
            revert InvalidDepth(out.depth, out.maxDelegationDepth);
        }
        if (notAfterNs != 0 && notAfterNs <= notBeforeNs) {
            revert ValidityInverted(notBeforeNs, notAfterNs);
        }
        out.notBefore = notBeforeNs / NS_PER_MILLISECOND;
        out.notAfter = notAfterNs == 0 ? 0 : notAfterNs / NS_PER_MILLISECOND;

        // Four length-prefixed fields: IssuerDN, SubjectDN, AuthorityKeyId,
        // SubjectKeyId. Every field before them is fixed width, which is the
        // whole reason the schema orders them this way.
        uint256 p = 58;
        uint256 issuerDnLen;
        (p, issuerDnLen) = _skipLengthPrefixed(tbs, p);
        out.issuerDnHash = keccak256(tbs[p - issuerDnLen:p]);
        uint256 subjectDnLen;
        (p, subjectDnLen) = _skipLengthPrefixed(tbs, p);
        out.subjectDn = tbs[p - subjectDnLen:p];
        uint256 akidLen;
        (p, akidLen) = _skipLengthPrefixed(tbs, p);
        out.authorityKeyId = _bytes32At(tbs, p - akidLen, akidLen);
        uint256 skidLen;
        (p, skidLen) = _skipLengthPrefixed(tbs, p);
        uint256 skidStart = p - skidLen;

        _need(tbs, p + 2);
        uint16 keyCount = uint16(bytes2(tbs[p:p + 2]));
        p += 2;
        // AFTER the count word. `SubjectKeyId` is SHA3-256 of the KeyEntry
        // array alone — `encodeTbs` writes `PublicKeyCount` as its own field and
        // `encodePublicKeyBlock` returns only the entries. Hashing the count in
        // produces a digest that is self-consistent and matches no certificate
        // any issuer ever wrote.
        uint256 blockStart = p;

        uint32 previousSort = 0;
        for (uint256 i = 0; i < keyCount; i++) {
            _need(tbs, p + 8);
            uint16 alg = uint16(bytes2(tbs[p:p + 2]));
            uint16 purpose = uint16(bytes2(tbs[p + 2:p + 4]));
            uint32 keyLen = uint32(bytes4(tbs[p + 4:p + 8]));
            p += 8;
            _need(tbs, p + keyLen);

            // Ascending by (purpose, algorithm), duplicates invalid. The schema
            // requires the order so `certHash` is reproducible across
            // implementations; enforcing it here also means a second entry for
            // one slot cannot quietly shadow the first.
            uint32 sortKey = (uint32(purpose) << 16) | uint32(alg);
            if (i > 0) {
                if (sortKey == previousSort) revert DuplicateKey(purpose, alg);
                if (sortKey < previousSort) revert KeysNotSorted();
            }
            previousSort = sortKey;

            // The algorithm is pinned per CLASS, not merely recorded. A
            // transaction slot carrying an access-class key would verify
            // cryptographically and mean something entirely different — an
            // identity key must never authorize a transaction, or splitting the
            // classes buys nothing.
            // Matched on the PAIR, not on the purpose alone. A CA carries two
            // keys under one purpose (`0x0004`) distinguished only by
            // algorithm, so matching on purpose first would find the first of
            // them twice and the second never.
            if (purpose == txPurpose && alg == ALG_ML_DSA_87) {
                if (keyLen != FinalChainPrecompiles.ML_DSA_87_PUBLIC_KEY_LEN) {
                    revert BadKeyLength(alg, keyLen);
                }
                out.transactionKey = tbs[p:p + keyLen];
            } else if (purpose == accessPurpose && alg == ALG_SLH_DSA_SHAKE_256S) {
                if (keyLen != FinalChainPrecompiles.SLH_DSA_SHAKE_256S_PUBLIC_KEY_LEN) {
                    revert BadKeyLength(alg, keyLen);
                }
                out.accessKey = tbs[p:p + keyLen];
            } else if (purpose == kemPurpose && alg == ALG_ML_KEM_1024) {
                out.kemMlKem = tbs[p:p + keyLen];
            } else if (purpose == kemPurpose && alg == ALG_HQC_5) {
                out.kemHqc = tbs[p:p + keyLen];
            } else if (purpose == PURPOSE_ACTIVE_SEAL && alg == ALG_SLH_DSA_SHAKE_256S) {
                if (keyLen != FinalChainPrecompiles.SLH_DSA_SHAKE_256S_PUBLIC_KEY_LEN) {
                    revert BadKeyLength(alg, keyLen);
                }
                out.sealKey = tbs[p:p + keyLen];
            } else if (purpose == PURPOSE_ACTIVE_SEAL) {
                // The seal is hash-based by definition — it exists to stand on
                // the OTHER assumption from the transaction key it co-signs
                // with. A lattice seal would be two signatures on one bet.
                revert WrongAlgorithmForSlot(purpose, alg);
            } else if (purpose == txPurpose || purpose == accessPurpose) {
                // A slot the caller asked for, carrying the wrong scheme. It
                // would verify cryptographically and mean something else
                // entirely — an identity key must never authorize a
                // transaction, or splitting the classes buys nothing.
                revert WrongAlgorithmForSlot(purpose, alg);
            } else if (purpose == kemPurpose) {
                // Same rule for the encapsulation slot. A third KEM appearing
                // under this purpose is a hybrid whose second family nobody
                // agreed on, and admitting it silently is how a pair becomes a
                // trio that one reader honours and another ignores.
                revert WrongAlgorithmForSlot(purpose, alg);
            }

            // NO length check on the KEM keys here, and that is deliberate.
            // The signing slots are checked against a constant because the
            // parser's own callers depend on the length; an encapsulation key
            // is checked by `0x0203` / `0x0207` at the moment it is REGISTERED,
            // where the answer is a well-formedness verdict rather than a
            // parse failure. Two checks of the same thing in two shapes is how
            // one of them ends up weaker and nobody notices which.
            p += keyLen;
        }

        // `SubjectKeyId` is SHA3-256 of the KeyEntry array, count word
        // EXCLUDED — `blockStart` is taken after the count is consumed, for the
        // reason given where it is set. Recomputing it is what turns "these
        // bytes decode" into "the CA signed these exact keys"; the field is
        // inside the TBS, so it is covered by the signatures.
        out.subjectKeyId = FinalChainPrecompiles.sha3_256(tbs[blockStart:p]);
        bytes32 declared = _bytes32At(tbs, skidStart, skidLen);
        if (out.subjectKeyId != declared) revert SubjectKeyIdMismatch(out.subjectKeyId, declared);

        // Both or neither. A stage is issued as a unit, so a certificate
        // carrying one of its two keys is not a partial certificate — it is a
        // certificate for a stage that does not exist.
        if (out.transactionKey.length == 0) revert MissingSlot(txPurpose);
        if (out.accessKey.length == 0) revert MissingSlot(accessPurpose);

        // The encapsulation pair is both-or-neither for the same reason, and
        // the reason is louder here: a hybrid quietly reduced to one family is
        // identical on the wire, so a certificate carrying only the lattice
        // half would seal successfully and silently drop the code-based hedge.
        // Neither is the CA case and the pre-v4 case, both legitimate.
        if ((out.kemMlKem.length == 0) != (out.kemHqc.length == 0)) {
            revert MissingSlot(kemPurpose);
        }

        _need(tbs, p + 2);
        uint16 extCount = uint16(bytes2(tbs[p:p + 2]));
        p += 2;
        for (uint256 i = 0; i < extCount; i++) {
            _need(tbs, p + 7);
            uint16 extType = uint16(bytes2(tbs[p:p + 2]));
            uint32 valueLen = uint32(bytes4(tbs[p + 3:p + 7]));
            p += 7;
            _need(tbs, p + valueLen);
            // The Institution extension's VALUE, kept for the issuer
            // profile's jurisdiction rule. Everything else is skipped as
            // before — extensions are structural to certHash, semantic to
            // whichever consumer knows them.
            if (extType == EXT_INSTITUTION) out.institutionExt = tbs[p:p + valueLen];
            p += valueLen;
        }
        out.tbsLength = p;
    }

    /// @notice Parse a LIVE-stage certificate: the live transaction and access keys.
    /// @dev `external`, like the other three entry points below. The identity registry sits against the
    ///      deployed-code ceiling and this parser is its single largest inlined dependency, so the four doors
    ///      it calls are DEPLOY-LINKED: the library is one more contract in the state plane's fixed deploy
    ///      order, and its address is baked immutably into the registry's bytecode. A linked library is code,
    ///      not a key — nothing can repoint it after deployment, so the split costs a call boundary and no
    ///      trust.
    /// @param tbs The TBS bytes, verbatim.
    /// @return The parsed and self-checked certificate.
    function parseLive(bytes calldata tbs) external view returns (Parsed memory) {
        return parse(tbs, PURPOSE_ACTIVE_TX, PURPOSE_ACTIVE_ACCESS, PURPOSE_ACTIVE_KEM);
    }

    /// @notice Parse a RECOVERY-stage certificate.
    /// @dev The recovery pair authorizes rotating the wallet's own credentials and NOTHING else. Acting as a
    ///      guardian is an ordinary action for that account and uses the live access key, so keeping the two
    ///      stages in separate certificates is what makes that boundary something a verifier can see.
    /// @param tbs The TBS bytes, verbatim.
    /// @return The parsed and self-checked certificate.
    function parseRecovery(bytes calldata tbs) external view returns (Parsed memory) {
        return parse(tbs, PURPOSE_RECOVERY_TX, PURPOSE_RECOVERY_ACCESS, PURPOSE_RECOVERY_KEM);
    }

    /// @notice Parse a certificate authority's certificate, whose two keys are both cert-signing.
    /// @dev Both classes resolve to the same purpose, which is why {parse} matches on the
    ///      `(purpose, algorithm)` PAIR: an authority carries two keys under one purpose and matching on the
    ///      purpose alone would find the first of them twice and the second never.
    /// @dev No encapsulation purpose. An authority signs and is never sealed to, so {NO_KEM_PURPOSE} is
    ///      passed as a value the key loop can never match. An authority certificate carrying encapsulation
    ///      keys would parse them into slots the registry then discards, which is a shape worth refusing to
    ///      have at all.
    /// @param tbs The TBS bytes, verbatim.
    /// @return The parsed and self-checked certificate.
    function parseCa(bytes calldata tbs) external view returns (Parsed memory) {
        return parse(tbs, PURPOSE_CERT_SIGNING, PURPOSE_CERT_SIGNING, NO_KEM_PURPOSE);
    }

    /**
     * @notice Verify an issuer's dual signature over a TBS.
     * @dev Both must verify, not either. Two signatures under two different hardness assumptions is the
     *      entire reason a certificate carries two, and accepting one would collapse that to whichever
     *      family breaks first.
     *
     *      Provided for callers that verify an off-chain issuance against keys they already trust. The
     *      caller supplies the issuer's keys, so it is the caller's job to have taken them from a registered
     *      record rather than from its own calldata — a key handed in with the signature proves nothing.
     * @param tbs The signed TBS bytes.
     * @param issuerMlDsaKey The issuer's registered ML-DSA-87 cert-signing key.
     * @param issuerSlhDsaKey The issuer's registered SLH-DSA-SHAKE-256s cert-signing key.
     * @param mlDsaSignature The lattice signature over `tbs`.
     * @param slhDsaSignature The hash-based signature over `tbs`.
     * @return Whether both signatures verify.
     */
    function verifyIssuerSignatures(
        bytes memory tbs,
        bytes memory issuerMlDsaKey,
        bytes memory issuerSlhDsaKey,
        bytes memory mlDsaSignature,
        bytes memory slhDsaSignature
    ) external view returns (bool) {
        return FinalChainPrecompiles.verifyMlDsa87(issuerMlDsaKey, tbs, mlDsaSignature)
            && FinalChainPrecompiles.verifySlhDsa(issuerSlhDsaKey, tbs, slhDsaSignature);
    }

    /// @notice Refuse a TBS that is shorter than the parser is about to read.
    /// @dev Called before every read rather than once at the top, because the layout is variable-length: a
    ///      certificate can be well-formed up to its key block and truncated inside it, and a parser that
    ///      only checked the fixed header would read whatever calldata followed.
    /// @param tbs The TBS bytes.
    /// @param upto The offset the next read needs to be valid.
    function _need(bytes calldata tbs, uint256 upto) private pure {
        if (tbs.length < upto) revert Truncated(upto, tbs.length);
    }

    /// @notice Step over one four-byte-length-prefixed field and report where it was.
    /// @dev Bounds-checks the prefix before reading it and the value before returning, so a truncated
    ///      certificate cannot make the cursor run past the end of calldata. The caller recovers the value's
    ///      slice as `tbs[next - length:next]`.
    /// @param tbs The TBS bytes.
    /// @param p Offset of the length prefix.
    /// @return next Offset just past the field's value.
    /// @return length The field's declared length.
    function _skipLengthPrefixed(bytes calldata tbs, uint256 p)
        private
        pure
        returns (uint256 next, uint256 length)
    {
        _need(tbs, p + 4);
        length = uint32(bytes4(tbs[p:p + 4]));
        next = p + 4 + length;
        _need(tbs, next);
    }

    /// @notice Read a key identifier out of the TBS as one word.
    /// @dev Answers `bytes32(0)` for any length other than 32 rather than reverting. A key identifier that
    ///      is not 32 bytes is not a SHA3-256 digest, so it cannot match the value it is compared against,
    ///      and the comparison at the call site produces the correct refusal with no separate error to
    ///      define. The one legitimate short case is a zero-length authority key identifier, which the
    ///      caller must reject on its own terms.
    /// @param tbs The TBS bytes.
    /// @param start Offset of the field's value.
    /// @param length The field's declared length.
    /// @return The 32-byte value, or zero when the field is not 32 bytes long.
    function _bytes32At(bytes calldata tbs, uint256 start, uint256 length)
        private
        pure
        returns (bytes32)
    {
        // A SubjectKeyId that is not 32 bytes is not a SHA3-256 digest, so it
        // cannot match and the comparison will fail — which is the correct
        // outcome and needs no separate error.
        if (length != 32) return bytes32(0);
        return bytes32(tbs[start:start + 32]);
    }
}

contracts/finalchain/FinalChainInitializable.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
pragma solidity ^0.8.20;

import {StorageSlot} from "@openzeppelin/contracts/utils/StorageSlot.sol";

/**
 * @title Final Chain Initializable
 * @notice The once-only initializer of a Final Chain state-plane contract that stands behind `FinalChainProxy`
 *         (ruled 2026-09-12: every plane contract does).
 *
 * @dev The proxy never re-runs an implementation's constructor, so a constructor that writes STORAGE — the
 *      trees' zero-hash ladder and live roots, a bootstrap admin, the supply's 100M — would leave the proxy's
 *      storage empty: the writes land in the implementation, which nothing reads through. Such a contract
 *      moves those writes into one internal `_setUp(...)` guarded by {initializer} and calls it from BOTH
 *      places: its constructor (a direct deploy — every Foundry fixture, every test — behaves exactly as
 *      before, and the bare implementation marks its OWN storage initialized, so nobody can initialize it
 *      later) and an external `initialize(...)`, which `FinalChainProxy`'s constructor runs by `delegatecall`
 *      in the proxy's storage. Constructor immutables (`registry`, `trees`, …) need none of this: they live in
 *      the implementation's code and read as constants through the proxy.
 *
 *      The flag lives in a namespaced slot, not in Solidity storage: inheriting this contract shifts no
 *      layout, and an implementation upgraded in place can never collide with it. An upgrade that appends
 *      storage seeds it through a new guarded function of its own — `initialize` runs once per proxy, ever.
 *
 *      A proxy deployed WITHOUT its init data is a live hole: `initialize` is external and the first caller
 *      would be the admin. The deploy tool refuses to place a proxy whose implementation declares
 *      `initialize` without running it, and reads {initialized} back before it continues.
 */
abstract contract FinalChainInitializable {
    /// @dev `bytes32(uint256(keccak256("final.chain.initialized")) - 1)`.
    bytes32 private constant INITIALIZED_SLOT = 0x1bf7ff51edde3507ea8edc0d02272dc3e66fd14d0a75a234f844ee7b236829d2;

    /// @notice The contract's storage was set up — by its constructor (a direct deploy) or by `initialize`
    ///         through its proxy.
    event Initialized();

    /// @notice `initialize` ran already in this storage — the constructor's, or a proxy's, once.
    error AlreadyInitialized();

    /// @dev Guards the one function that replays the constructor's storage writes. Sets the flag BEFORE the
    ///      body so a re-entrant call from inside the body cannot run it twice.
    modifier initializer() {
        StorageSlot.BooleanSlot storage flag = StorageSlot.getBooleanSlot(INITIALIZED_SLOT);
        if (flag.value) revert AlreadyInitialized();
        flag.value = true;
        _;
        emit Initialized();
    }

    /// @notice Whether this storage was set up. False on a proxy whose init data was not run — the state the
    ///         deploy tool refuses.
    function initialized() external view returns (bool) {
        return StorageSlot.getBooleanSlot(INITIALIZED_SLOT).value;
    }
}

contracts/finalchain/FinalChainPrecompiles.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may link this library into contracts deployed on a
//    Final DeFi Protocol chain in order to reach that chain's hash and
//    post-quantum signature-verification precompiles.
// 2. Integrators, node operators, and auditors may use it to reproduce and
//    independently re-verify any verdict those precompiles produced, as part of
//    their integration with the Final DeFi Protocol.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this library or a competing state plane derived
//    from it without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

/**
 * @title Final Chain Precompiles
 * @notice The three primitives Final Chain adds to the EVM, and the only
 *         supported way to reach them.
 *
 * @dev **These exist ONLY on Final Chain (chain id 48359).** They are provided
 * by this chain's own node binary, and
 * nothing at these addresses on Ethereum, Optimism or any other chain will
 * answer. A contract that calls them must be one that only ever runs here;
 * `assertAvailable` below is the cheap way to fail loudly rather than treat an
 * empty return as a verified signature.
 *
 * The addresses are the FIPS numbers, which is the whole allocation rule —
 * there is no local registry to consult and no way for two implementations to
 * disagree about where a primitive lives:
 *
 * | address | primitive | FIPS |
 * |---|---|---|
 * | `0x…0202` | SHA3-256 | 202 |
 * | `0x…0203` | ML-KEM-1024 key validation | 203 |
 * | `0x…0204` | ML-DSA-87 verify | 204 |
 * | `0x…0205` | SLH-DSA-SHAKE-256s verify | 205 |
 * | `0x…0207` | HQC-5 key validation | 207 |
 *
 * The two KEM addresses VALIDATE keys and do nothing else, for one reason:
 * encapsulation is a SENDER operation and decapsulation needs the secret key,
 * so neither belongs on a chain at all. Checking that a registered public key
 * is well-formed is hardening rather than a dependency, and nothing in this
 * system waits on it.
 *
 * HQC's number is 207. It had none when the KEM pair was chosen, which was the
 * one thing separating it from ML-KEM here — a primitive with no standard
 * number has no address under this rule, and inventing one would have been a
 * local convention masquerading as the global one.
 *
 * **No AEAD precompile, at any number.** The chain must never be able to
 * decrypt an intent, and checking a revealed body against its commitment is a
 * hash compare that `0x0202` already serves.
 *
 * ## Why this library refuses to take a public key from its caller
 *
 * It does take one — the primitives are pure functions and cannot do otherwise.
 * The rule lives one level up, in `FinalPqQuorum`: a key passed as an argument
 * proves nothing, because anyone holding a keypair can produce a valid
 * signature under it. Only a key read from `FinalIdentityRegistry` is evidence
 * about WHO signed. Every call site here must be able to answer "where did this
 * key come from" with "storage", never "calldata".
 *
 * ## `success` is not the answer
 *
 * A `staticcall` to a verifier returns two things and both matter. `success`
 * false means the call was malformed — usually a length bug in the caller — and
 * `success` true with a zero word means the signature did not verify. The
 * helpers below collapse both to `false` for the caller's convenience, which is
 * safe in that direction and only in that direction: treating a failed call as
 * a valid signature would be the whole security of the system.
 */
library FinalChainPrecompiles {
    /// @notice SHA3-256 (FIPS 202). NOT `keccak256`, which is the
    /// pre-standardisation padding and produces a different digest.
    address internal constant SHA3_256 = address(0x0202);
    /// @notice ML-DSA-87 verification (FIPS 204). Transaction-class keys.
    address internal constant ML_DSA_87 = address(0x0204);
    /// @notice SLH-DSA-SHAKE-256s verification (FIPS 205). Access-class keys.
    address internal constant SLH_DSA_SHAKE_256S = address(0x0205);

    /// @notice ML-KEM-1024 encapsulation-key validation (FIPS 203).
    /// @dev VALIDATES; it does not encapsulate. Runs FIPS 203 §7.2's own
    /// encapsulation-key check — the type check and the modulus check — and
    /// nothing else. Encapsulation is a sender operation and decapsulation
    /// needs the secret key, so neither belongs on a chain.
    address internal constant ML_KEM_1024 = address(0x0203);

    /// @notice HQC-5 public-key validation (FIPS 207).
    /// @dev Structural only: the length, and the three padding bits the
    /// encoding leaves beyond `n = 57637`. HQC has no cheap key-validity
    /// predicate and this does not pretend to one.
    address internal constant HQC_5 = address(0x0207);

    /// @notice ML-DSA-87 public key length. Round-3 Dilithium5 shares it.
    uint256 internal constant ML_DSA_87_PUBLIC_KEY_LEN = 2592;
    /// @notice ML-DSA-87 signature length. Round-3 Dilithium5 is 4595.
    uint256 internal constant ML_DSA_87_SIGNATURE_LEN = 4627;
    /// @notice SLH-DSA-SHAKE-256s public key length (`PK.seed ‖ PK.root`).
    uint256 internal constant SLH_DSA_SHAKE_256S_PUBLIC_KEY_LEN = 64;
    /// @notice SLH-DSA-SHAKE-256s signature length. The `f` set is 49,856.
    uint256 internal constant SLH_DSA_SHAKE_256S_SIGNATURE_LEN = 29792;

    /// @notice Thrown when a precompile is absent, i.e. this is not Final Chain
    /// or the node is stock reth rather than `final-reth`.
    error PrecompileUnavailable(address precompile);

    /**
     * @notice Reverts unless all five precompiles answer.
     * @dev Call this from a constructor. A contract whose security rests on PQ
     * verification must not deploy onto a chain that cannot perform it — the
     * failure mode otherwise is a quorum that reaches threshold with zero valid
     * signatures, discovered at the worst possible moment.
     *
     * The probe is SHA3-256 of the empty string, whose value is a published
     * FIPS 202 constant. It cannot be produced by an address with no code
     * (which returns empty) nor by `keccak256` (which gives a different digest
     * for the same input), so it distinguishes "the right precompile" from both
     * "nothing here" and "the wrong hash function".
     */
    function assertAvailable() internal view {
        bytes32 expected = 0xa7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a;
        (bool ok, bytes memory out) = SHA3_256.staticcall("");
        if (!ok || out.length != 32 || bytes32(out) != expected) {
            revert PrecompileUnavailable(SHA3_256);
        }
        // The two signature verifiers are probed by shape rather than by a
        // known-answer vector: a KAT here would put a 29,792-byte signature in
        // this contract's bytecode. A deliberately short input is a
        // *precompile error* by contract, so a FAILED call is the pass and a
        // silent success would mean something else is answering at the address.
        _probeRejectsShortInput(ML_DSA_87);
        _probeRejectsShortInput(SLH_DSA_SHAKE_256S);
        // The two KEM validators are probed the other way round, because they
        // are total by contract: a wrong length is a malformed KEY, which is
        // the question being asked, so they ANSWER rather than error. A
        // one-byte input must therefore come back as a well-formed `false`, and
        // a failed call means nothing is there.
        _probeAnswersFalse(ML_KEM_1024);
        _probeAnswersFalse(HQC_5);
    }

    /**
     * @dev A short input must make the precompile ERROR. The gas budget is the
     * whole subtlety.
     *
     * A reverting CONTRACT refunds the gas it did not use. A precompile that
     * returns an error consumes **everything forwarded to it** — and Solidity
     * forwards 63/64 of what is left by default. Two such probes in a
     * constructor therefore burn all but 1/4096 of the deployment's gas, and
     * the deploy fails with no revert data at all.
     *
     * That is not hypothetical: it is what happened the first time this ran
     * against a real `final-reth`, and no Foundry test could have caught it.
     * A mocked precompile is a contract, and a contract's `require` hands the
     * gas back.
     *
     * 5,000 is generous for a call that fails on a length check before any
     * cryptography runs, and small enough that both probes together are noise
     * against a deployment.
     */
    function _probeRejectsShortInput(address precompile) private view {
        bool ok;
        assembly ("memory-safe") {
            let ptr := mload(0x40)
            mstore8(ptr, 0x00)
            ok := staticcall(5000, precompile, ptr, 0x01, 0x00, 0x00)
        }
        if (ok) revert PrecompileUnavailable(precompile);
    }

    /**
     * @dev A one-byte input must come back as a well-formed zero word.
     *
     * The inverse of `_probeRejectsShortInput`, and the inversion is the point:
     * these two precompiles are TOTAL. Every byte string has an answer to "is
     * this a well-formed key", and for one byte the answer is no. A precompile
     * that errored here would be one that treats a malformed key as a caller
     * bug, which is the opposite of what a registry wants.
     *
     * Gas is bounded for the same reason as the other probe — an erroring
     * precompile consumes everything forwarded — even though the pass case
     * returns normally and refunds.
     */
    function _probeAnswersFalse(address precompile) private view {
        bool ok;
        bytes32 answer;
        assembly ("memory-safe") {
            let ptr := mload(0x40)
            mstore8(ptr, 0x00)
            ok := staticcall(5000, precompile, ptr, 0x01, ptr, 0x20)
            answer := mload(ptr)
        }
        if (!ok || answer != bytes32(0)) revert PrecompileUnavailable(precompile);
    }

    /**
     * @notice Is `encapsulationKey` a well-formed ML-KEM-1024 key?
     *
     * @dev The check a registry owes a sender. A malformed encapsulation key
     * stored on chain is an account whose intents cannot be sealed, and the
     * discovery happens at the first attempt to seal one — on the hybrid path,
     * as a pair silently reduced to one family, which is the failure with no
     * error attached.
     *
     * False rather than reverting on any shape, including the wrong length,
     * because the caller is asking a question and every input has an answer.
     */
    function isWellFormedMlKem1024(bytes memory encapsulationKey) internal view returns (bool) {
        return _validatesKey(ML_KEM_1024, encapsulationKey);
    }

    /// @notice Is `publicKey` a well-formed HQC-5 key?
    /// @dev Structural, and honestly partial — see the precompile. It catches a
    /// truncated key, a key from the wrong parameter set, and a tail carrying
    /// smuggled bytes, which are the three ways this goes wrong in practice.
    function isWellFormedHqc5(bytes memory publicKey) internal view returns (bool) {
        return _validatesKey(HQC_5, publicKey);
    }

    /// @dev A failed CALL is not a false answer. It means nothing is at the
    /// address — this is not Final Chain, or the node is stock reth — and
    /// reading it as "the key is malformed" would silently disable the check on
    /// exactly the deployment where it cannot run.
    function _validatesKey(address precompile, bytes memory key) private view returns (bool) {
        (bool ok, bytes memory out) = precompile.staticcall(key);
        if (!ok || out.length != 32) revert PrecompileUnavailable(precompile);
        return bytes32(out) != bytes32(0);
    }

    /// @notice FIPS 202 SHA3-256 over `data`.
    /// @dev The certificate schema hashes `TBSCertificate`, `SubjectKeyId` and
    /// `AuthorityKeyId` with this, so it is the only function that can check a
    /// `certHash` against the bytes it claims to summarise.
    function sha3_256(bytes memory data) internal view returns (bytes32 digest) {
        (bool ok, bytes memory out) = SHA3_256.staticcall(data);
        if (!ok || out.length != 32) revert PrecompileUnavailable(SHA3_256);
        digest = bytes32(out);
    }

    /// @notice Verify an ML-DSA-87 signature. False on any failure, including
    /// a malformed call.
    function verifyMlDsa87(bytes memory publicKey, bytes memory message, bytes memory signature)
        internal
        view
        returns (bool)
    {
        if (
            publicKey.length != ML_DSA_87_PUBLIC_KEY_LEN
                || signature.length != ML_DSA_87_SIGNATURE_LEN
        ) return false;
        return _verify(ML_DSA_87, publicKey, signature, message);
    }

    /// @notice Verify an SLH-DSA-SHAKE-256s signature. False on any failure.
    function verifySlhDsa(bytes memory publicKey, bytes memory message, bytes memory signature)
        internal
        view
        returns (bool)
    {
        if (
            publicKey.length != SLH_DSA_SHAKE_256S_PUBLIC_KEY_LEN
                || signature.length != SLH_DSA_SHAKE_256S_SIGNATURE_LEN
        ) return false;
        return _verify(SLH_DSA_SHAKE_256S, publicKey, signature, message);
    }

    /// @dev `publicKey ‖ signature ‖ message`, in that order. Both fixed-length
    /// fields come first so the message is unambiguously the remainder — the
    /// same reason the precompile takes no length prefix.
    function _verify(
        address precompile,
        bytes memory publicKey,
        bytes memory signature,
        bytes memory message
    ) private view returns (bool) {
        (bool ok, bytes memory out) =
            precompile.staticcall(abi.encodePacked(publicKey, signature, message));
        return ok && out.length == 32 && bytes32(out) != bytes32(0);
    }
}

contracts/finalchain/FinalChainTime.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may link this time library into contracts deployed on
//    a Final DeFi Protocol chain, and may read its constants to interpret the
//    timestamps and durations that chain publishes.
// 2. Integrators, indexers, and operators may use it to convert between this
//    chain's clock and the units their own systems keep, as part of their
//    integration with the Final DeFi Protocol.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this library or a competing state plane derived
//    from it without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

/**
 * @title Final Chain Time
 * @notice **On this chain, `block.timestamp` is MILLISECONDS, not seconds.**
 * @dev Every other EVM chain stamps seconds. This one cannot. It mints a block every 100 ms, and the protocol
 * requires block timestamps to strictly increase, so a second-denominated clock would exhaust its distinct
 * values ten times over per second. Milliseconds is the deliberate consequence, and it is a property of the
 * CHAIN itself rather than of any contract here — nothing in this library can change it, and nothing deployed
 * beside this library may assume otherwise.
 *
 * Every duration and every instant on this chain is therefore in milliseconds. This library exists so that fact
 * is stated in one place and converted in one place, instead of being assumed independently everywhere a
 * deadline or a delay is written.
 *
 * ## The naming rule, which is a safety rule
 *
 * A field or constant carrying a duration or an instant on this chain ends in `Ms`. This is not decoration. A
 * delay field named for seconds while holding milliseconds elapses a thousand times too fast: a one-day
 * recovery delay would mature in about eighty-six seconds, and a two-year dormancy threshold in under a day.
 * Those delays are the whole of what stands between a stolen credential and an account, so a name that states
 * the wrong unit is not a cosmetic defect — it is the defect, wearing a disguise. `Seconds`-suffixed names do
 * not appear in this directory and must not be introduced.
 *
 * A test harness is not a check on this. Standard EVM tooling stamps `block.timestamp` in seconds, so a suite
 * can agree with the contracts under test and both be wrong about the chain they deploy to. The unit has to be
 * carried by the names.
 *
 * Solidity's `hours` and `days` suffixes remain the clearest way to write a duration, so durations are written
 * as `24 hours * MS_PER_SECOND` rather than as a bare literal: the intent stays readable and the unit stays
 * explicit at the point of use.
 */
library FinalChainTime {
    /// @notice Milliseconds per second — the whole conversion between this chain's clock and ordinary time,
    ///         named once.
    /// @dev Multiply a `seconds`-denominated Solidity duration literal by this to express it in this chain's
    ///      units. It is deliberately the only place the factor appears.
    uint64 internal constant MS_PER_SECOND = 1_000;

    /// @notice Nanoseconds per millisecond — the divisor for values that arrive stamped in nanoseconds.
    /// @dev The certificate schema stamps validity windows in nanoseconds, so a certificate converts DOWN to
    ///      this chain's clock. Dividing rather than multiplying is the direction that cannot overflow, and it
    ///      truncates toward the past, which for a validity window is the conservative rounding.
    uint64 internal constant NS_PER_MILLISECOND = 1_000_000;

    /// @notice This chain's current time, in milliseconds.
    /// @dev A function rather than a bare `block.timestamp` read so the unit is visible at every call site.
    ///      It performs no arithmetic and exists purely so that reading the clock is self-describing, where
    ///      `block.timestamp` on this chain is silently a thousand times what a reader would assume.
    /// @return nowInMs The current block's timestamp, in milliseconds.
    function nowMs() internal view returns (uint64) {
        return uint64(block.timestamp);
    }
}

contracts/finalchain/FinalIdentityRegistry.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may deploy this identity registry as part of a Final
//    DeFi Protocol state plane, and may register, rotate, and revoke identity
//    records in it under the authority this contract enforces.
// 2. Operators, integrators, and end users may read the certificates, public
//    keys, role bits, and signer bindings it holds, and may call its views to
//    resolve an identity, a sender, or a quorum roster.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this identity registry or a competing certificate
//    authority derived from it without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

import {FinalCertificate} from "./FinalCertificate.sol";
import {FinalChainTime} from "./FinalChainTime.sol";
import {FinalChainPrecompiles} from "./FinalChainPrecompiles.sol";
import {FinalPqQuorum} from "./FinalPqQuorum.sol";
import {FinalSweep} from "../utils/FinalSweep.sol";
import {FinalChainInitializable} from "./FinalChainInitializable.sol";

/// @dev Commitment space for one stage's encapsulation pair.
///      Byte-equal to `FinalWalletFactory.DOMAIN_KEM_BUNDLE` and to the certificate issuer's own preimage
/// constant. Three independent derivations of one word: a mismatch in any of them is a certificate that
/// verifies nowhere, so the value is pinned by test against the other two rather than imported.
bytes32 constant DOMAIN_KEM_BUNDLE = keccak256("FINAL_KEM_BUNDLE_v01");

/// @dev Commitment space for the identity tree's wallet leaf.
///      Byte-equal to `IdentityRootModule.DOMAIN_IDENTITY_LEAF` on every execution chain. Restated rather
/// than imported because that module lives on other chains and no import would make the two one value; a
/// cross-contract parity test pins the pair. The spelling is FROZEN: the premined certificates were mined
/// against this exact constant, and the leaf it derives is the `certHash` inside a wallet's address
/// derivation, so changing a byte here moves addresses that already exist.
bytes32 constant DOMAIN_IDENTITY_LEAF = keccak256("FINAL_IDENTITY_LEAF_PQ_v01");

/// @dev Commitment space for the identity tree's ISSUER leaf.
///      An issuer projects under its own domain — `DOMAIN_ISSUER_LEAF ‖ certHash ‖ version ‖
/// issuerTreeRoot` — so an issuer record is stapleable for offline licence verification while the distinct
/// domain keeps it out of wallet admission: an execution chain's gateway folds with the wallet domain, so an
/// issuer leaf can never satisfy an identity-certificate check there. `issuerTreeRoot` is a RESERVED word,
/// zero until an issuer's own certificate-tree anchor is wired — the only clean path to offline licence
/// revocation, since fixed-depth insertion-ordered state trees cannot prove non-inclusion.
bytes32 constant DOMAIN_ISSUER_LEAF = keccak256("FINAL_ISSUER_LEAF_v01");

/// @dev The issuer name every chain-attested certificate carries, as a keccak digest.
///      The chain is the issuer but holds no keypair, so a chain-attested certificate carries this named
/// value in its issuer field: required by the wire format, verifying nothing on its own, and covered by
/// `certHash`. The name is deliberately environment-agnostic and jurisdiction-silent — the issuer is the
/// worldwide network rather than a legal entity, and an environment-specific name would fork `certHash` per
/// environment. Compared as a hash rather than as a string, so the check costs one word.
bytes32 constant CHAIN_ISSUER_DN_HASH = keccak256("CN=Final Chain,O=Final DeFi");

/// @dev The authority key identifier every chain-attested certificate names.
///      `SHA3-256(utf8("FINAL_CHAIN_AUTHORITY_v01"))` — a DOMAIN constant rather than the digest of a key,
/// because the chain issues certificates and holds no public key block to hash. Precomputed rather than
/// derived at construction: the harness the unit tests run under does not implement the real SHA3 function,
/// and the literal is pinned by test against a reference implementation. A zero-length authority key
/// identifier is reserved and is admitted nowhere.
bytes32 constant CHAIN_AUTHORITY_KEY_ID =
    0x9a6a5d8139ad2d28957698330aaa691017dba7dc80eb7cbec585239fb680bbab;

/**
 * @title Identity Leaf Sink
 * @notice The identity tree's projection door on the state-trees contract.
 * @dev A narrow interface rather than an import, because the trees contract imports THIS file — the
 *      dependency runs that way, and this is the one call that runs the other. Declaring the single method
 *      here keeps the cycle away from the compiler without duplicating either contract's surface.
 */
interface IIdentityLeafSink {
    /// @notice Recompute and store the identity-tree leaf for each named account.
    /// @dev Called inside the same transaction as every identity mutation, so an execution chain's admission
    ///      set sees a registration, rotation or revocation the moment this chain does. The leaf VALUE is
    ///      derived by the trees contract from the registry's post-mutation state, so the caller supplies
    ///      accounts and never a leaf.
    /// @param accounts The accounts whose leaves are stale.
    function syncIdentityLeaves(address[] calldata accounts) external;
}

/**
 * @title Revocation Recorder
 * @notice The revocation log's recording door.
 * @dev Same narrow-interface reasoning as the leaf sink above. `recorded` is read first, so a fingerprint
 *      somebody already recorded through the log's permissionless door cannot revert the registry mutation
 *      that feeds it.
 */
interface IRevocationRecorder {
    /// @notice Fold a permanently retired signer fingerprint into the revocation log.
    /// @dev The log applies its own permanence gate, reading this registry back; the call states nothing the
    ///      registry has not already decided.
    /// @param signerId The fingerprint that has lost standing for good.
    function record(bytes32 signerId) external;
    /// @notice Whether the log already holds `signerId`.
    /// @param signerId The fingerprint to look up.
    /// @return Whether a leaf for it exists.
    function recorded(bytes32 signerId) external view returns (bool);
}

/**
 * @title Final Identity Registry
 * @notice Who every party in the system is, on chain: one record per party, carrying its certificate and its
 *         actual public keys.
 * @dev Every service, every co-signer, every certificate authority and every operator has one record here.
 *      The record holds the party's public keys in full rather than commitments to them, and this contract is
 *      the certificate authority as well as the roster.
 *
 *      ## Where this runs
 *
 *      Only on this project's own reth-based chains. Verification happens inside precompiles that exist
 *      nowhere else: SHA3-256 at `0x0202`, ML-DSA-87 at `0x0204` and SLH-DSA-SHAKE-256s at `0x0205`, each
 *      address being that primitive's FIPS number. The constructor probes them and refuses to deploy where
 *      they are absent, so a registry of keys the chain cannot check never comes into existence. This
 *      contract takes part in no CREATE2 derivation — its address is per chain, and nothing derives an
 *      address from it — and nothing outside this directory imports it.
 *
 *      Gas is deliberately NOT a design constraint on that chain and must not be optimised for. Where a
 *      choice below trades gas for a verdict that is re-derivable from public state, the verdict wins: a
 *      signature checked in a precompile is a fact anyone can recompute, where the same check run in a
 *      library by whichever process happened to hold the keys is only a claim.
 *
 *      ## Keys are read from STORAGE, never from calldata
 *
 *      A commitment would be a quarter of the storage and would be enough to CHECK a key someone hands you.
 *      It is not enough to VERIFY A SIGNATURE, because verification needs the key itself — and a key that
 *      arrives in calldata proves nothing, since anyone holding a keypair can produce a valid signature under
 *      it. A quorum built on caller-supplied keys is a quorum of one: whoever built the calldata.
 *
 *      So the keys live here in full. `FinalPqQuorum` resolves a member through this registry and reads that
 *      member's key from this registry's storage, and "which key is co-signer three" has exactly one answer,
 *      in exactly one place. That is the load-bearing rule of every quorum on the chain, not an optimisation.
 *
 *      ## The certificate is the record, not a pointer to one
 *
 *      `certHash` is `SHA3-256(TBSCertificate)`: the certificate's own identity, and the handle revocation is
 *      keyed on. {registerWallet} and {registerIssuer} take the certificate's TBS bytes and read everything
 *      out of them — the digest, the serial, the key identifiers, the depth pair, the validity window and
 *      every public key. Neither takes a key argument, so no two arguments can disagree and no registrar can
 *      bind a certificate to a keypair that certificate does not contain.
 *
 *      ## The root is the first record here, not a self-signed file
 *
 *      This chain is the only root certificate authority, and the root is pinned as an entry in this registry
 *      rather than distributed as a self-signed certificate somebody has to install. Chain validation
 *      terminates here BY IDENTITY. Everything registered after the root is verified on chain, inside the
 *      precompiles, against what this registry already holds: the holder's own two signatures over the
 *      admission digest, the pinned chain-issuer constants, and — for a nested issuer — lineage to a
 *      registered parent whose depth admits it. There is no path by which a key enters this registry
 *      unattested; a registrar cannot register anything else.
 *
 *      ## Roles are a bitmask
 *
 *      One party is legitimately several things: a co-signer that also publishes, an operator that is also a
 *      guardian. A single enum would force either duplicate records for one key, which is two sources of
 *      truth about one party, or a role hierarchy nobody agrees on. A mask has neither problem, and a quorum
 *      asks whether an account CARRIES a capability rather than whether it IS a type.
 *
 *      ## Membership is hybrid-gated
 *
 *      Who is in this registry, and with which roles, is the root of every quorum on the chain, so it is the
 *      one thing no single key may decide. Once bootstrap is sealed, every membership mutation — register,
 *      roles, revoke, a hash-based signing key, the registrar threshold itself — and every state-plane
 *      configuration change routed through {requireRegistrarQuorum} takes a `ROLE_REGISTRAR` quorum whose
 *      approvals carry BOTH families: the ML-DSA-87 vote and the SLH-DSA seal. A lattice break cannot then
 *      rewrite the roster, and neither can a hash-function break; only both at once.
 *
 *      The bootstrap window is the only exception. While it is open the bootstrap admin writes alone, because
 *      every roster has to be installed by someone before it can install itself. {sealBootstrap} closes it
 *      irreversibly, and refuses to close it onto a registrar quorum that cannot be met.
 *
 *      ## The sender is not the account
 *
 *      Transactions on this chain are signed by ML-DSA-87, and the node derives `msg.sender` from the key as
 *      `keccak256(0x04 ‖ publicKey)[12:]`. That address pays gas and holds no authority. {accountOfSender}
 *      binds it to the identity whose live transaction key it derives from, so a `msg.sender` gate anywhere
 *      on this chain asks {senderHasRole} and resolves to the identity — and a key rotation moves the binding
 *      instead of the roster.
 *
 *      ## What this contract deliberately does not do
 *
 *      It never un-revokes: a revoked certificate is finished, and reversing that would reopen every past
 *      verification. It never enumerates a mapping inside a mutation — the registrars supply the chain list a
 *      revocation touches, and a fingerprint an incomplete list missed stays permanently recordable through
 *      the revocation log's own permissionless door. It holds no funds, exposes no payable entrypoint, and
 *      reserves nothing against a sweep. And it grants no capability by parsing one: a certificate says which
 *      keys a party holds, `roles` says what the party may do, and the two arrive as different arguments on
 *      purpose.
 */
contract FinalIdentityRegistry is FinalSweep, FinalChainInitializable {
    // ---------------------------------------------------------------- roles

    /// @notice May co-sign account-state rounds (tree 1).
    uint256 public constant ROLE_ACCOUNT_COSIGNER = 1 << 0;
    /// @notice May co-sign MMR / bundle-log advances.
    uint256 public constant ROLE_MMR_COSIGNER = 1 << 1;
    /// @notice May publish PHI ledger state (tree 2).
    uint256 public constant ROLE_PHI_PUBLISHER = 1 << 2;
    /// @notice May publish vAsset state (tree 3).
    uint256 public constant ROLE_VASSET_PUBLISHER = 1 << 3;
    /// @notice May publish oracle data (tree 4).
    uint256 public constant ROLE_ORACLE_PUBLISHER = 1 << 4;
    /// @notice May publish settlement / asset registry roots (trees 5 and 6).
    uint256 public constant ROLE_REGISTRY_PUBLISHER = 1 << 5;
    /// @notice May act as a wallet guardian.
    uint256 public constant ROLE_GUARDIAN = 1 << 6;
    /// @notice May submit transactions on behalf of the protocol.
    uint256 public constant ROLE_RELAYER = 1 << 7;
    /// @notice May register and revoke identities once bootstrap is sealed.
    uint256 public constant ROLE_REGISTRAR = 1 << 8;
    /// @notice A certificate authority — the root, or an intermediate under it.
    uint256 public constant ROLE_CERTIFICATE_AUTHORITY = 1 << 9;
    /// @notice May co-sign `FinalSettlementLog` appends — the cross-chain
    /// settlement quorum, the same members whose LMS keys satisfy the
    /// execution chains' settlement set. A role of its own rather than a
    /// second use of `ROLE_REGISTRY_PUBLISHER`: the registries (trees 5/6)
    /// change on listing cadence and settlement leaves release custody, and
    /// one role for both would put the value plane behind the listing roster.
    uint256 public constant ROLE_SETTLEMENT_COSIGNER = 1 << 10;

    // ----------------------------------------------------- action domains

    /// @notice Action domain for registering or rotating a wallet identity.
    /// @dev One domain per membership mutation, so an approval to grant a role can never be replayed as one
    ///      to revoke. This registry is its own verifying contract for all of these, and the digest also
    ///      binds a per-contract counter, so an approval authorises exactly one action once.
    bytes32 public constant DOMAIN_REGISTER_WALLET = keccak256("FINAL_REGISTRY_REGISTER_WALLET_v01");
    /// @notice Action domain for registering or rotating an issuer.
    bytes32 public constant DOMAIN_REGISTER_ISSUER = keccak256("FINAL_REGISTRY_REGISTER_ISSUER_v01");
    /// @notice The admission proof-of-possession digest domain.
    /// @dev The HOLDER signs `keccak256(abi.encode(domain, chainid, registry, certHash, recoveryCertHash,
    ///      gateNonce))` with the live transaction key (ML-DSA-87) AND the live access key
    ///      (SLH-DSA-SHAKE-256s) — both families, in the admission transaction, verified by the precompiles.
    ///      Possession lives in the TRANSACTION, never in the artifact, so holding a copy of somebody's
    ///      public certificate admits nothing.
    bytes32 public constant DOMAIN_IDENTITY_ADMISSION = keccak256("FINAL_IDENTITY_ADMISSION_v01");
    /// @notice Action domain for root-plane global certificate revocation, by handle.
    bytes32 public constant DOMAIN_REVOKE_CERTIFICATE =
        keccak256("FINAL_REGISTRY_REVOKE_CERTIFICATE_v01");
    /// @notice Digest domain for an issuer revoking a certificate it signed off chain.
    /// @dev Signed by the issuer's own registered cert-signing keys rather than approved by a quorum, and
    ///      bound to the issuer's own gate nonce, so one issuer's revocations cannot be replayed as
    ///      another's.
    bytes32 public constant DOMAIN_ISSUER_CERT_REVOCATION =
        keccak256("FINAL_ISSUER_CERT_REVOCATION_v01");
    /// @notice Action domain for recording an account's hash-based signing key.
    bytes32 public constant DOMAIN_REGISTER_LMS_KEY = keccak256("FINAL_REGISTRY_REGISTER_LMS_KEY_v01");
    /// @notice Action domain for replacing an identity's capability bitmask.
    bytes32 public constant DOMAIN_SET_ROLES = keccak256("FINAL_REGISTRY_SET_ROLES_v01");
    /// @notice Action domain for retiring an identity.
    bytes32 public constant DOMAIN_REVOKE = keccak256("FINAL_REGISTRY_REVOKE_v01");
    /// @notice Action domain for moving the registrar threshold itself.
    bytes32 public constant DOMAIN_SET_REGISTRAR_THRESHOLD =
        keccak256("FINAL_REGISTRY_SET_REGISTRAR_THRESHOLD_v01");

    /// @notice The algorithm identifier the sender derivation is domain-separated by.
    /// @dev ML-DSA-87, FIPS 204 — the only algorithm this chain's transaction envelope admits. Prefixing it
    ///      means a key of another family can never derive the same sender address.
    uint8 private constant ENVELOPE_ALG_ML_DSA_87 = 4;

    // ------------------------------------------------------------- storage

    /**
     * @title Identity
     * @notice One party's on-chain identity.
     * @dev `version` increments on every mutation, and that increment is what a rotation IS: the record is
     *      replaced rather than appended to, and the version is how a reader on another chain knows which of
     *      two copies it has seen is newer.
     */
    struct Identity {
        /// SHA3-256 of the LIVE certificate's TBS bytes. The revocation handle.
        bytes32 certHash;
        /// SHA3-256 of the RECOVERY certificate's TBS bytes.
        bytes32 recoveryCertHash;
        /// The certificate's 32-byte serial, `16 B entropy ‖ 16 B counter`.
        bytes32 serial;
        /// SHA3-256 of this certificate's public key block. A child names it in
        /// its own `AuthorityKeyId`, which is how the chain links the two.
        bytes32 subjectKeyId;
        /// Capability bitmask. Zero for a registered-but-idle party.
        uint256 roles;
        /// Position on the delegation axis; 0 is the Final Chain root.
        uint8 depth;
        /// Deepest level this key may issue to. `== depth` means it signs no
        /// certificates at all, which is every end entity.
        uint8 maxDelegationDepth;
        /// Milliseconds since the epoch, on this chain's clock. The certificate schema stamps validity in
        /// nanoseconds and the parser converts on the way in, so nothing here ever compares across units.
        uint64 notBefore;
        /// Milliseconds since the epoch, or 0 for "never expires" — which the certificate schema allows and
        /// personal identity certificates use. The bound is exclusive.
        uint64 notAfter;
        /// Monotonic. A rotation that does not advance it is refused.
        uint64 version;
        /// Set by `revoke`. Never unset: a revoked certificate is finished, and
        /// an un-revoke would make every past verification re-openable.
        bool revoked;
        /// Distinguishes "no record" from "a record whose fields are all zero".
        bool registered;
    }

    /**
     * @title Lms Key
     * @notice A hash-based (LMS) signing key held by a registered account.
     * @dev The execution chains' quorums verify LMS rather than ML-DSA, because those chains have no
     *      post-quantum precompiles and check a keccak hash chain instead. Those keys are the authority over
     *      the post-quantum anchor, and therefore over post-quantum execution — which makes "who holds this
     *      fingerprint?" a question the state plane has to be able to answer, exactly as it answers it for
     *      every other key.
     *
     *      Recorded against an account that is ALREADY registered, so an LMS key is a capability of a known
     *      identity rather than a standalone credential. It inherits that identity's revocation: a revoked
     *      account's signer is a revoked signer, with nothing extra to remember to do.
     */
    struct LmsKey {
        /// `I`, hashed into every step of the signature.
        bytes16 keyId;
        /// Merkle tree height. Bound into the fingerprint, because the leaf
        /// commits to node `2^h + q` and a signer who could vary it could vary
        /// the numbering.
        uint8 height;
        /// `T[1]`, the LMS public key.
        bytes32 root;
        /// Monotonic. A rotation that does not advance it is refused, so a
        /// replayed registration cannot reinstate a superseded key.
        uint64 version;
        /// Distinguishes "no key" from "a key whose fields are all zero".
        bool registered;
    }

    /// @notice The hash-based (LMS) signing key an account holds, per chain.
    /// @dev One slot per account AND chain. A single-use hash-based counter is a complete defence only while
    ///      the key it names signs for ONE chain, so the roster is stored the way it is armed: the same
    ///      operator is a different signer on every chain, and a rotation on one says nothing about another.
    mapping(address account => mapping(uint64 chainId => LmsKey)) private _lmsKey;
    /**
     * @title Lms Binding
     * @notice What a signer fingerprint is bound to: the account holding it and the chain it signs for.
     * @dev Two fields in one slot, deliberately. This contract sits within a few bytes of the deployed-code
     *      ceiling, so anything added to this surface has to pay for itself in bytecode first — which is why
     *      checks that no authority consults, such as refusing a zero chain identifier, are left to the
     *      publisher off chain rather than spent here.
     */
    struct LmsBinding {
        /// The account that registered the fingerprint. Zero means no account ever did.
        address account;
        /// The chain that registration was for. Zero alongside a zero account, for a fingerprint never
        /// registered.
        uint64 chainId;
    }

    /// @notice Which account a signer fingerprint belongs to, and which chain it signs for.
    /// @dev The lookup the whole LMS record exists for: an execution chain's roster names fingerprints and
    ///      nothing else, so without this the keys behind those names are unattributable. Written once at
    ///      registration and left in place when the key is superseded, because attribution is history — a
    ///      signature made under a retired key was still made by that operator.
    ///
    ///      The chain it names is what selects the slot {lmsSignerIsLive} resolves the fingerprint against.
    mapping(bytes32 signerId => LmsBinding) private _lmsBinding;

    /// @notice The identity record for an account.
    mapping(address account => Identity) private _identity;
    /// @notice The live transaction key, ML-DSA-87: spending, and every high-cadence protocol action.
    /// @dev All four key slots are stored in FULL rather than as commitments, because the precompiles verify
    ///      against a KEY and a key that arrived in calldata proves nothing about who signed. This is the
    ///      rule every quorum on this chain rests on.
    /// @dev A certificate authority has two keys rather than four, and they live in the two active slots.
    ///      One storage shape rather than two, because every reader would otherwise have to know which kind
    ///      of party it was looking at before it could look.
    mapping(address account => bytes) private _activeTransactionKey;
    /// @notice The live access key, SLH-DSA-SHAKE-256s: identity, rotation and guardianship.
    mapping(address account => bytes) private _activeAccessKey;
    /// @notice The pre-committed recovery transaction key, ML-DSA-87. Empty for a certificate authority.
    mapping(address account => bytes) private _recoveryTransactionKey;
    /// @notice The pre-committed recovery access key, SLH-DSA-SHAKE-256s. Empty for a certificate
    ///         authority.
    mapping(address account => bytes) private _recoveryAccessKey;
    /// @notice The seal key: a service's second SLH-DSA-SHAKE-256s key, which co-signs membership-class
    ///         quorum decisions (the registrar quorum); operational quorum actions take the ML-DSA-87 vote alone.
    /// @dev Empty for every identity whose certificate carries no seal slot, which is every user wallet and
    ///      every certificate authority. An identity with no seal can never contribute to a sealed quorum,
    ///      so {sealableMemberCount} counts this rather than counting role bits.
    mapping(address account => bytes) private _activeSealKey;
    /// @notice The live stage's ML-KEM-1024 encapsulation key, the lattice half of the pair.
    /// @dev Two algorithms per stage — ML-KEM-1024 and HQC-5 — so a break in either family leaves the other
    ///      standing, the same reasoning that pairs the two signature families. The pair is written and
    ///      cleared together, so an account holds both or neither.
    /// @dev Stored as the RAW keys, like the signing keys, because a registry that held only commitments
    ///      could not answer "encapsulate to this party" without a second lookup somewhere less
    ///      authoritative.
    mapping(address account => bytes) private _activeKemMlKem;
    /// @notice The live stage's HQC-5 encapsulation key, the code-based half of the pair.
    mapping(address account => bytes) private _activeKemHqc;
    /// @notice The recovery stage's ML-KEM-1024 encapsulation key. Empty when the account has no recovery
    ///         stage.
    mapping(address account => bytes) private _recoveryKemMlKem;
    /// @notice The recovery stage's HQC-5 encapsulation key. Empty when the account has no recovery stage.
    mapping(address account => bytes) private _recoveryKemHqc;
    /// @notice Reverse index. A certificate identifies exactly one account, so
    /// presenting a `certHash` is enough to find who it belongs to.
    mapping(bytes32 certHash => address account) public accountOfCertificate;
    /// @notice Revocation by certificate, independent of the account record.
    /// A certificate stays revoked even if its account is later re-registered
    /// under a new one.
    mapping(bytes32 certHash => bool) public certificateRevoked;
    /// @notice Who revoked a certificate through the ISSUER half of the lane.
    /// Scoped by the verifier: the entry binds only when the recorded revoker
    /// is the certificate's own issuer. Never gates registration.
    mapping(bytes32 certHash => address) public certificateRevokedBy;

    /// @notice Every registered account, in registration order. Small by
    /// construction — this is services and co-signers, not wallets.
    address[] private _accounts;

    /// @notice Bootstrap authority. Zero once `sealBootstrap` has run.
    address public bootstrapAdmin;
    /// @notice Whether registration still accepts the bootstrap admin.
    bool public bootstrapSealed;

    /// @notice Where identity mutations project the tree-8 leaf, same-tx.
    /// Zero only before {wireStatePlane} — the deploy tooling wires it before
    /// the first registration, and the projection is skipped while unset so
    /// the wiring transaction itself can be ordered freely in the bootstrap
    /// window.
    address public stateTrees;
    /// @notice Where the PERMANENT standing losses — revocation and LMS-key
    /// supersession — are recorded, same-tx. Zero only before {wireStatePlane}.
    address public revocationLog;

    /// @notice Sealed `ROLE_REGISTRAR` approvals a membership mutation needs.
    /// @dev Zero until set, and bootstrap cannot be sealed while it is zero or
    /// unreachable: a registry sealed behind a threshold nobody can meet is a
    /// registry nobody can ever write to again.
    uint256 public registrarThreshold;
    /// @notice Replay counter per verifying contract — this registry for its
    /// own mutations, each state-plane contract for its configuration. Bound
    /// into every registrar digest, so an approval is for exactly one action.
    mapping(address caller => uint64) private _gateNonce;
    /// @notice The identity a Final Chain sender belongs to. See the contract
    /// notes: a sender is derived from the `activeTransaction` key and is not
    /// the account.
    mapping(address sender => address account) public accountOfSender;

    // -------------------------------------------------------------- events

    /// @notice An identity was registered, or an existing one rotated onto a new certificate set.
    /// @param account The identity written.
    /// @param certHash The live certificate's handle.
    /// @param roles The capability bitmask now in force.
    /// @param version The record's monotonic version.
    event IdentityRegistered(
        address indexed account, bytes32 indexed certHash, uint256 roles, uint64 version
    );
    /// @notice An identity's capability bitmask was replaced.
    /// @param account The identity whose roles changed.
    /// @param previousRoles The mask before the change.
    /// @param newRoles The mask now in force.
    event IdentityRolesChanged(address indexed account, uint256 previousRoles, uint256 newRoles);
    /// @notice An account's hash-based signing key for one chain was recorded or rotated.
    /// @param account The identity that holds the key.
    /// @param signerId The fingerprint an execution chain's roster names.
    /// @param chainId The chain the key is armed for.
    /// @param keyId The LMS key identifier.
    /// @param height The Merkle tree height.
    /// @param root The LMS public key.
    /// @param version The lineage counter for this account and chain.
    event LmsKeyRegistered(
        address indexed account,
        bytes32 indexed signerId,
        uint64 indexed chainId,
        bytes16 keyId,
        uint8 height,
        bytes32 root,
        uint64 version
    );
    /// @notice An identity was retired. Irreversible, and its roles are cleared in the same transaction.
    /// @param account The identity that was revoked.
    /// @param certHash The certificate it held at the time.
    event IdentityRevoked(address indexed account, bytes32 indexed certHash);
    /// @notice One revocation-lane entry.
    /// @param certHash The certificate that was revoked.
    /// @param revoker Zero for a root-plane revocation, the issuing identity for an issuer's own.
    event CertificateRevoked(bytes32 indexed certHash, address indexed revoker);
    /// @notice The bootstrap window closed. After this there is no single-caller write path left.
    /// @param sealedBy The bootstrap admin that closed it, immediately before being cleared.
    event BootstrapSealed(address indexed sealedBy);
    /// @notice The one-shot state-plane wiring landed. Emitted at most once in this contract's lifetime.
    /// @param stateTrees The state-trees contract that owns the identity tree.
    /// @param revocationLog The append-only log of retired signer fingerprints.
    event StatePlaneWired(address stateTrees, address revocationLog);
    /// @notice The number of sealed registrar approvals a membership mutation needs was set.
    /// @param threshold The new threshold.
    event RegistrarThresholdSet(uint256 threshold);
    /// @notice A registrar quorum authorized an action.
    /// @param verifyingContract The contract the approvals were collected for, and whose counter was burned.
    /// @param actionDomain The action domain the approvals bound.
    /// @param nonce The counter value the approvals were made over; the next action needs the next one.
    /// @param valid How many approvals verified.
    event RegistrarQuorumApproved(
        address indexed verifyingContract, bytes32 indexed actionDomain, uint64 nonce, uint256 valid
    );

    // -------------------------------------------------------------- errors

    /// @notice The caller holds none of the authority the entry point requires.
    /// @param caller The address that called.
    error NotAuthorized(address caller);
    /// @notice The bootstrap window is already closed. Closing it is irreversible.
    error BootstrapAlreadySealed();
    /// @notice No record claims this account, or a zero address was offered as one.
    /// @param account The address that was named.
    error UnknownAccount(address account);
    /// @notice A certificate's encapsulation key failed the chain's own well-formedness check.
    /// @dev Names the algorithm, because the pair is stored together and "one of these two" is not an
    ///      actionable answer.
    /// @param account The account being registered.
    /// @param algorithmId The algorithm whose key was malformed.
    error MalformedEncapsulationKey(address account, uint16 algorithmId);
    /// @notice The certificate is already bound to a different account. One certificate identifies exactly
    ///         one party.
    /// @param certHash The certificate's handle.
    /// @param boundTo The account that already holds it.
    error CertificateAlreadyBound(bytes32 certHash, address boundTo);
    /// @notice The certificate has been revoked, or the account's own certificate has. Revocation is never
    ///         undone, so this is terminal for that handle.
    /// @param certHash The revoked certificate's handle.
    error CertificateIsRevoked(bytes32 certHash);
    /// @notice A registration or rotation did not advance the record's version. Monotonicity is what stops a
    ///         replayed transaction reinstating credentials their holder has moved off.
    /// @param current The version on record.
    /// @param offered The version the caller presented.
    error VersionNotNewer(uint64 current, uint64 offered);
    /// @notice The named account does not carry `ROLE_CERTIFICATE_AUTHORITY`, or does not currently stand.
    /// @param issuer The account that was named.
    error IssuerNotACertificateAuthority(address issuer);
    /// @notice The named parent has reached its own delegation bound and may issue nothing further.
    /// @param issuer The parent account.
    /// @param depth The parent's depth.
    /// @param maxDelegationDepth The deepest level the parent may issue to.
    error IssuerMayNotSign(address issuer, uint8 depth, uint8 maxDelegationDepth);
    /// @notice A certificate sits at a depth its lineage does not put it at. Levels cannot be skipped,
    ///         because skipping one is how an issuer escapes its own delegation bound.
    /// @param got The depth the certificate declares.
    /// @param want The depth its lineage requires.
    error WrongDepth(uint8 got, uint8 want);
    /// @notice A child certificate claims a deeper delegation bound than the parent that admits it.
    /// @param child The child's `maxDelegationDepth`.
    /// @param issuer The parent's `maxDelegationDepth`.
    error DelegationWidened(uint8 child, uint8 issuer);
    /// @notice The certificate names an authority key that is not its declared parent's subject key.
    /// @param got The authority key identifier the certificate carries.
    /// @param want The parent's subject key identifier.
    error AuthorityKeyIdMismatch(bytes32 got, bytes32 want);
    /// @notice The live and recovery certificates carry different serials, so they describe two different
    ///         certificate sets rather than two stages of one.
    /// @param liveSerial The live certificate's serial.
    /// @param recoverySerial The recovery certificate's serial.
    error StagesDisagree(bytes32 liveSerial, bytes32 recoverySerial);
    /// @notice An LMS tree height outside 1 through 24, the range the verifier admits.
    /// @param height The height offered.
    error LmsHeightOutOfRange(uint8 height);
    /// @notice A zero LMS root commits to no tree and is refused.
    error LmsRootIsZero();
    /// @notice This signer fingerprint already belongs to a different account.
    /// @param signerId The fingerprint offered.
    /// @param boundTo The account that already holds it.
    error LmsKeyAlreadyBound(bytes32 signerId, address boundTo);
    /// @notice Two identities cannot share a transaction key: the sender it derives would be attributable to
    ///         both.
    /// @param sender The derived sender address.
    /// @param boundTo The account that already claims it.
    error SenderAlreadyBound(address sender, address boundTo);
    /// @notice Fewer registrars able to seal than the threshold asks for.
    /// @param sealable How many standing registrars hold a seal key.
    /// @param threshold How many approvals a membership mutation needs.
    error RegistrarThresholdUnreachable(uint256 sealable, uint256 threshold);
    /// @notice A zero registrar threshold was offered, or a quorum was demanded before one was set. A zero
    ///         threshold is a registry with no authority behind its membership.
    error RegistrarThresholdIsZero();
    /// @notice {wireStatePlane} has already run. Both pointers are trust topology and are written once.
    error StatePlaneAlreadyWired();
    /// @notice {wireStatePlane} was handed a zero address for the trees or for the revocation log.
    error ZeroStatePlane();
    /// @notice The holder's proof of possession did not verify: one family failed, or the digest was built
    ///         over the wrong nonce.
    /// @param account The account the admission was for.
    error AdmissionProofInvalid(address account);
    /// @notice The certificate does not name the chain's authority key, so it is not chain-attested.
    /// @param authorityKeyId The authority key identifier that was presented.
    error NotChainAttested(bytes32 authorityKeyId);
    /// @notice The certificate's issuer name is not the chain's own.
    /// @param issuerDnHash The digest of the name that was presented.
    error WrongIssuerDn(bytes32 issuerDnHash);
    /// @notice A chain-attested end entity sits at depth 1 with `maxDelegationDepth == depth`; anything else
    ///         is not an end entity.
    /// @param depth The certificate's position on the delegation axis.
    /// @param maxDelegationDepth The deepest level it may issue to.
    error NotAnEndEntity(uint8 depth, uint8 maxDelegationDepth);
    /// @notice An issuer that cannot sign is an end entity wearing an issuer profile, and belongs in
    ///         {registerWallet}.
    /// @param depth The certificate's position on the delegation axis.
    /// @param maxDelegationDepth The deepest level it may issue to.
    error IssuerCannotSign(uint8 depth, uint8 maxDelegationDepth);
    /// @notice A registered issuer's certificate never expires.
    /// @dev Expiry is the passive half of an issuer's lifecycle, so a zero `NotAfter` is refused here even
    ///      though the certificate schema allows one for an end entity.
    error IssuerMustExpire();
    /// @notice An issuer validity window past {MAX_ISSUER_VALIDITY_MS}.
    /// @param notBefore The certificate's start, in this chain's milliseconds.
    /// @param notAfter The certificate's end, in this chain's milliseconds.
    error IssuerValidityTooLong(uint64 notBefore, uint64 notAfter);
    /// @notice An institution registration whose subject name carries no ISO 3166 country component, or
    ///         whose institution extension is too short to hold one.
    /// @dev Only the trust root is jurisdiction-silent; a registered institution names where it answers for
    ///      itself.
    error JurisdictionMissing();
    /// @notice The subject name's country and the institution extension's `jurisdiction` field disagree, or
    ///         the extension's jurisdiction is not a two-byte country code.
    error JurisdictionMismatch();

    // --------------------------------------------------------- constructor

    /**
     * @notice Deploy the registry with a bootstrap registrar in place.
     * @dev The precompile probe is the point of the constructor. This contract is meaningless on a chain
     *      that cannot verify post-quantum signatures, and deploying it there would produce a registry full
     *      of keys nothing on that chain can check — so it refuses to exist where the precompiles are
     *      absent rather than existing and being trusted.
     *
     *      The admin is the whole authority until {sealBootstrap} runs, because every roster has to be
     *      installed by someone before it can install itself.
     * @param admin The bootstrap registrar. Genesis names the chain deployer.
     */
    constructor(address admin) {
        FinalChainPrecompiles.assertAvailable();
        _setUp(admin);
    }

    /**
     * @notice The constructor's storage write, for a registry behind `FinalChainProxy` — whose upgrade
     *         authority is this registry itself: the proxy is built with its own address as `registry`.
     *         Runs once, in the proxy's constructor; `AlreadyInitialized` afterwards and on a direct deploy.
     * @param admin The bootstrap registrar.
     */
    function initialize(address admin) external {
        _setUp(admin);
    }

    /// @dev The bootstrap admin is storage (cleared by {sealBootstrap}), so a proxy needs it replayed.
    function _setUp(address admin) internal initializer {
        bootstrapAdmin = admin;
    }

    // ----------------------------------------------------------- authority

    /**
     * @notice The authority gate on every membership mutation this registry performs.
     * @dev Bootstrap is a real window, not a formality: every roster in this system has to be installed by
     *      someone before it can install itself, and a design that pretends otherwise ends up with a roster
     *      that cannot be brought into existence at all. It is closed by {sealBootstrap}, irreversibly.
     *
     *      While the window is open the admin writes alone. Once it is closed there is no single-caller path
     *      left — not for a registrar, not for anyone — and every mutation goes through the sealed registrar
     *      quorum, whose approvals carry both signature families.
     * @param actionDomain One of the `DOMAIN_*` constants naming the mutation.
     * @param payloadDigest The mutation's own arguments, folded.
     * @param anchorBlock The block the registrars read the roster at. Ignored while bootstrap is open.
     * @param approvals The sealed registrar quorum. Empty while bootstrap is open.
     */
    function _requireMembershipAuthority(
        bytes32 actionDomain,
        bytes32 payloadDigest,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) private {
        if (!bootstrapSealed && msg.sender == bootstrapAdmin) return;
        _requireRegistrarQuorum(address(this), actionDomain, payloadDigest, anchorBlock, approvals);
    }

    /**
     * @notice The sealed registrar quorum, for the other contracts in the state plane.
     * @dev `msg.sender` — the calling contract — is the verifying contract the digest binds and the counter
     *      it burns, so an approval collected for one contract's configuration cannot be spent on another's.
     *      The caller decides its own bootstrap exemption before calling; this function knows no caller's
     *      admin and applies none.
     *
     *      Anyone may SUBMIT such a transaction. Authority is the approvals, not the sender, which is the
     *      whole point of a quorum.
     * @param actionDomain The caller's own action domain for the change being authorised.
     * @param payloadDigest The change's arguments, folded by the caller.
     * @param anchorBlock The block the registrars read the roster at.
     * @param approvals The registrar approvals, each carrying both families.
     */
    function requireRegistrarQuorum(
        bytes32 actionDomain,
        bytes32 payloadDigest,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireRegistrarQuorum(msg.sender, actionDomain, payloadDigest, anchorBlock, approvals);
    }

    /// @notice Burn one gate nonce and require a sealed registrar quorum over the action.
    /// @dev The digest is `FinalPqQuorum.digest(verifyingContract, actionDomain, anchorBlock,
    ///      keccak256(abi.encode(nonce, payloadDigest)))`. The counter is burned BEFORE verification, so an
    ///      approval set is spent whether or not it turns out to be sufficient.
    ///
    ///      The seal is required rather than optional: membership is the hybrid class, and an approval
    ///      carrying only the lattice vote is not an approval here.
    /// @param verifyingContract The contract the approvals are for, and whose counter is burned.
    /// @param actionDomain One of the `DOMAIN_*` constants, so an approval to grant cannot be replayed to
    ///        revoke.
    /// @param payloadDigest The action's own arguments, folded.
    /// @param anchorBlock The block the registrars read the roster at.
    /// @param approvals The registrar approvals, each carrying both families.
    function _requireRegistrarQuorum(
        address verifyingContract,
        bytes32 actionDomain,
        bytes32 payloadDigest,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) private {
        if (registrarThreshold == 0) revert RegistrarThresholdIsZero();
        uint64 nonce = _gateNonce[verifyingContract];
        _gateNonce[verifyingContract] = nonce + 1;
        bytes32 quorumDigest = FinalPqQuorum.digest(
            verifyingContract, actionDomain, anchorBlock, keccak256(abi.encode(nonce, payloadDigest))
        );
        uint256 valid = FinalPqQuorum.require_(
            this,
            approvals,
            quorumDigest,
            ROLE_REGISTRAR,
            registrarThreshold,
            FinalPqQuorum.ALG_ML_DSA_87,
            anchorBlock,
            true
        );
        emit RegistrarQuorumApproved(verifyingContract, actionDomain, nonce, valid);
    }

    /**
     * @notice Set how many sealed registrar approvals a membership mutation needs.
     * @dev The bootstrap admin while the window is open; the current registrar quorum afterwards, so a
     *      registrar set that grows or shrinks can move the threshold to match itself.
     *
     *      Refuses a threshold the sealable registrars cannot meet, and refuses zero. Both are a registry
     *      that can never be written to again, and the way that presents is every membership mutation
     *      reverting forever with nothing naming the threshold as the cause.
     * @param threshold How many sealed approvals a mutation needs. Must be reachable and non-zero.
     * @param anchorBlock The block the registrars read the roster at. Ignored while bootstrap is open.
     * @param approvals The sealed registrar quorum. Empty while bootstrap is open.
     */
    function setRegistrarThreshold(
        uint256 threshold,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireMembershipAuthority(
            DOMAIN_SET_REGISTRAR_THRESHOLD, keccak256(abi.encode(threshold)), anchorBlock, approvals
        );
        if (threshold == 0) revert RegistrarThresholdIsZero();
        uint256 sealable = sealableMemberCount(ROLE_REGISTRAR);
        if (sealable < threshold) revert RegistrarThresholdUnreachable(sealable, threshold);
        registrarThreshold = threshold;
        emit RegistrarThresholdSet(threshold);
    }

    /// @notice The replay counter the next registrar approval for `caller` must be made over.
    /// @dev One counter per verifying contract, so an approval collected for one contract's configuration
    ///      cannot be spent on another's. A caller reads this to build the digest its registrars will sign.
    /// @param caller The verifying contract the approvals will name — this registry for its own mutations.
    /// @return The value the next approval must bind.
    function gateNonceOf(address caller) external view returns (uint64) {
        return _gateNonce[caller];
    }

    // -------------------------------------------------------- LMS signers

    /**
     * @notice The roster identity of an LMS public key.
     * @dev Byte-identical to `FinalRootAuthority.signerId` on the execution chains. Restated rather than
     *      imported because the two live on different chains and no import would make them one value —
     *      which is precisely why a test pins them together. A drift here would make every lookup miss while
     *      looking perfectly well-formed.
     *
     *      The height is bound into the fingerprint as well as the root, because a leaf commits to a node
     *      number derived from it, so a signer free to vary the height could vary the numbering.
     * @param keyId The LMS key identifier.
     * @param height The Merkle tree height.
     * @param root The LMS public key.
     * @return The fingerprint an execution chain's roster names.
     */
    function lmsSignerId(bytes16 keyId, uint8 height, bytes32 root) public pure returns (bytes32) {
        return keccak256(abi.encode(keyId, height, root));
    }

    /**
     * @notice Record the hash-based (LMS) signing key an already-registered account holds for one chain.
     * @dev Membership-gated, like every other write here.
     *
     *      Deliberately NOT a certificate: an LMS key is a capability of an existing identity, not an
     *      identity of its own. Binding it to an account means it inherits that account's revocation, so
     *      retiring a compromised operator is one action rather than one action per key they hold.
     *
     *      A rotation records the SUPERSEDED fingerprint into the revocation log in the same transaction, so
     *      the execution chains' suspension lane never depends on someone noticing. The superseded
     *      fingerprint is left BOUND to this account rather than cleared, because attribution is history.
     *
     *      A zero `chainId` is a tooling mistake rather than an attack — the slot it occupies is
     *      self-consistent and no authority consults it — so the publisher refuses it off chain and this
     *      contract spends no bytecode on the check.
     * @param account Must already be registered and not revoked.
     * @param chainId The execution chain this key is armed for.
     * @param keyId The LMS key identifier, hashed into every step of a signature under it.
     * @param height The Merkle tree height, 1 through 24.
     * @param root The LMS public key. Zero commits to no tree and is refused.
     * @param version Strictly increasing per account and chain. A rotation that does not advance it is
     *        refused, so a replayed registration cannot reinstate a key the operator has moved off.
     * @param anchorBlock The block the registrars read the roster at. Ignored while bootstrap is open.
     * @param approvals The sealed registrar quorum. Empty while bootstrap is open.
     */
    function registerLmsKey(
        address account,
        uint64 chainId,
        bytes16 keyId,
        uint8 height,
        bytes32 root,
        uint64 version,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireMembershipAuthority(
            DOMAIN_REGISTER_LMS_KEY,
            keccak256(abi.encode(account, chainId, keyId, height, root, version)),
            anchorBlock,
            approvals
        );
        Identity storage id = _identity[account];
        if (!id.registered) revert UnknownAccount(account);
        if (id.revoked) revert CertificateIsRevoked(id.certHash);
        // A zero chain id is a tooling mistake, not an attack: the slot it
        // would occupy is self-consistent and no authority consults it. The
        // publisher refuses it; EIP-170 pressure keeps the check off-chain.
        if (height == 0 || height > 24) revert LmsHeightOutOfRange(height);
        if (root == bytes32(0)) revert LmsRootIsZero();

        // Version lineage is PER account and chain: the same operator is a different signer on every chain,
        // so one chain starting at version 1 says nothing about another already being at version 3.
        LmsKey storage existing = _lmsKey[account][chainId];
        // An empty slot holds version 0, so this alone also refuses a version-0
        // registration — versions start at 1.
        if (version <= existing.version) {
            revert VersionNotNewer(existing.version, version);
        }

        bytes32 signerId = lmsSignerId(keyId, height, root);
        address boundTo = _lmsBinding[signerId].account;
        if (boundTo != address(0) && boundTo != account) {
            revert LmsKeyAlreadyBound(signerId, boundTo);
        }

        // The fingerprint being superseded, captured before the slot moves —
        // `existing` is a storage pointer and reads the NEW key afterwards.
        bytes32 superseded = existing.registered
            ? lmsSignerId(existing.keyId, existing.height, existing.root)
            : bytes32(0);

        // The superseded fingerprint is left bound to this account rather than
        // cleared. It is history: a signature made under the old key was made
        // by this operator, and a lookup that stopped resolving would make that
        // unprovable after the fact.
        _lmsKey[account][chainId] = LmsKey(keyId, height, root, version, true);
        _lmsBinding[signerId] = LmsBinding(account, chainId);
        emit LmsKeyRegistered(account, signerId, chainId, keyId, height, root, version);

        // Supersession is a PERMANENT transition — the old fingerprint stops
        // being this slot's current key and nothing re-registers it (a
        // re-registration of the same material is the same fingerprint, which
        // the guard below leaves alone). Recorded same-tx so the execution
        // chains' suspension lane never depends on someone noticing.
        if (superseded != bytes32(0) && superseded != signerId) {
            _recordRevokedSigner(superseded);
        }
        _projectIdentity(account);
    }

    /// @notice The LMS key an account holds for one chain, if any.
    /// @dev Keyed per account AND per chain, because a single-use hash-based counter is only complete while
    ///      the key it names signs for one chain. `registered` is the field to branch on; the zero struct
    ///      means no key rather than a key of zeroes.
    /// @param account The identity to read.
    /// @param chainId The chain the key is armed for.
    /// @return The stored key, copied to memory.
    function lmsKeyOf(address account, uint64 chainId) external view returns (LmsKey memory) {
        return _lmsKey[account][chainId];
    }

    /// @notice What a fingerprint is bound to: the account that registered it and the chain it signs for.
    /// @dev The binding survives supersession, because attribution is history: a signature made under a
    ///      retired key was still made by that operator, and a lookup that stopped resolving would make that
    ///      unprovable after the fact. Standing is a separate question, answered by {lmsSignerIsLive}.
    ///
    ///      The revocation log's permanence gate reads this to find the slot a fingerprint belongs to; that
    ///      slot's current key is what separates a superseded fingerprint, which is permanent and
    ///      recordable, from a merely lapsed one, which renewal undoes.
    /// @param signerId The fingerprint to resolve.
    /// @return account The account that registered it, or zero for a fingerprint never registered.
    /// @return chainId The chain that registration was for, or zero alongside a zero account.
    function lmsBindingOf(bytes32 signerId) external view returns (address account, uint64 chainId) {
        LmsBinding storage binding = _lmsBinding[signerId];
        return (binding.account, binding.chainId);
    }

    /**
     * @notice Whether a signer fingerprint is held by a standing, unrevoked account.
     * @dev The question a verifier actually has. An execution chain's authority roster names fingerprints
     *      and learns nothing else about them, so without this the keys behind those names are
     *      unanswerable from the state plane.
     *
     *      Standing is asked through {isActive} rather than by spelling the conditions out again, because a
     *      second spelling is how two answers drift: an expired identity already holds no role, and a signer
     *      lookup that disagreed would leave a roster satisfiable by an operator the rest of the registry
     *      has stopped honouring.
     *
     *      Live means the CURRENT key of the fingerprint's own account-and-chain slot, not merely one this
     *      account ever held. A superseded fingerprint stays attributable but stops being live, and a
     *      rotation on one chain says nothing about the same operator's key on another.
     * @param signerId The fingerprint an authority roster names.
     * @return live Whether the fingerprint is that slot's current key and the account still stands.
     * @return account The account the fingerprint is bound to, or zero when none ever registered it.
     */
    function lmsSignerIsLive(bytes32 signerId) external view returns (bool live, address account) {
        LmsBinding storage binding = _lmsBinding[signerId];
        account = binding.account;
        if (account == address(0)) return (false, address(0));
        // `isActive`, not a registered/revoked pair spelled out here. The
        // certificate validity window is part of standing: an expired identity
        // already holds no role, and a signer lookup that disagreed would leave
        // a roster satisfiable by an operator the rest of the registry has
        // stopped honouring. Spelling the condition out a second time is how
        // the two drift apart.
        if (!isActive(account)) return (false, account);
        // The CURRENT key of the fingerprint's own (account, chain) slot, not
        // merely one this account ever held: a superseded fingerprint stays
        // attributable but stops being live, and a rotation on one chain says
        // nothing about the same operator's key on another.
        LmsKey storage k = _lmsKey[account][binding.chainId];
        live = k.registered && lmsSignerId(k.keyId, k.height, k.root) == signerId;
    }

    /// @notice Close the bootstrap window. Irreversible.
    /// @dev Refuses while the registrar quorum is unset or unreachable, because sealing then would leave a
    ///      registry nobody can ever write to again — including to fix the threshold that locked it. The
    ///      count is of registrars that can SEAL: a certificate authority carrying the registrar role is
    ///      registered from a certificate with no seal slot and can never contribute an approval, so
    ///      counting role bits alone would seal onto a quorum that looks reachable and is not.
    ///
    ///      Clears the admin as well as setting the flag, so no single-caller path survives the seal.
    function sealBootstrap() external {
        if (msg.sender != bootstrapAdmin) revert NotAuthorized(msg.sender);
        if (bootstrapSealed) revert BootstrapAlreadySealed();
        if (registrarThreshold == 0) revert RegistrarThresholdIsZero();
        uint256 sealable = sealableMemberCount(ROLE_REGISTRAR);
        if (sealable < registrarThreshold) {
            revert RegistrarThresholdUnreachable(sealable, registrarThreshold);
        }
        bootstrapSealed = true;
        bootstrapAdmin = address(0);
        emit BootstrapSealed(msg.sender);
    }

    // ------------------------------------------------- state-plane wiring

    /**
     * @notice Wire the state trees and the revocation log, once, inside the bootstrap window.
     * @dev One-shot because both pointers are TRUST TOPOLOGY: the trees pointer decides where the
     *      wallet-creation admission set is written, and the log pointer decides where permanent standing
     *      losses are recorded. A re-wireable pointer would be a key over both.
     *
     *      It cannot be a constructor argument, because both of those contracts take THIS registry as one of
     *      theirs. The deploy tooling calls it in the same nonce-fixed block that deploys them, before any
     *      identity is registered, which is why the projection is silently skipped while the pointers are
     *      zero rather than reverting.
     * @param stateTrees_ The state-trees contract that owns tree 8. Zero is refused.
     * @param revocationLog_ The append-only log of retired signer fingerprints. Zero is refused.
     */
    function wireStatePlane(address stateTrees_, address revocationLog_) external {
        if (bootstrapSealed || msg.sender != bootstrapAdmin) revert NotAuthorized(msg.sender);
        if (stateTrees != address(0) || revocationLog != address(0)) revert StatePlaneAlreadyWired();
        if (stateTrees_ == address(0) || revocationLog_ == address(0)) revert ZeroStatePlane();
        stateTrees = stateTrees_;
        revocationLog = revocationLog_;
        emit StatePlaneWired(stateTrees_, revocationLog_);
    }

    /// @notice Refresh `account`'s tree-8 leaf in the state trees, same transaction.
    /// @dev Skipped while the plane is unwired, which is a bootstrap-window state the deploy tooling closes
    ///      before the first registration, and never otherwise. The leaf VALUE is derived by the trees
    ///      contract from this registry's post-mutation state, so there is nothing here to get wrong beyond
    ///      forgetting to call it — which is why every mutation calls it, including the one that cannot
    ///      change the leaf.
    /// @param account The identity whose leaf is stale.
    function _projectIdentity(address account) private {
        address trees = stateTrees;
        if (trees == address(0)) return;
        address[] memory one = new address[](1);
        one[0] = account;
        IIdentityLeafSink(trees).syncIdentityLeaves(one);
    }

    /// @notice Record a permanently retired signer fingerprint into the revocation log, same transaction.
    /// @dev Skipped while the log is unwired, and skipped when somebody already recorded the fingerprint
    ///      through the log's permissionless door — the log refuses a duplicate, and a membership mutation
    ///      must not be revertible by a stranger who front-ran its bookkeeping.
    /// @param signerId The fingerprint that has lost standing for good.
    function _recordRevokedSigner(bytes32 signerId) private {
        address log = revocationLog;
        if (log == address(0)) return;
        if (IRevocationRecorder(log).recorded(signerId)) return;
        IRevocationRecorder(log).record(signerId);
    }

    // -------------------------------------------------------- registration

    /**
     * @title Admission Proof
     * @notice The holder's proof of possession at admission: both live-stage families over the admission
     *         digest.
     * @dev There is no root keypair and no issuer signature on this path. The chain admits, and the two
     *      signatures presented at creation are the HOLDER's, verified by the precompiles inside the same
     *      transaction that writes the record. Possession lives in the TRANSACTION, never in the artifact:
     *      a public certificate is a document anyone may hold, so presenting one proves nothing.
     */
    struct AdmissionProof {
        /// The holder's ML-DSA-87 signature under the live TRANSACTION key, over the admission digest.
        bytes mlDsaSignature;
        /// The holder's SLH-DSA-SHAKE-256s signature under the live ACCESS key, over the same digest. Two
        /// families over one message, so neither a lattice break nor a hash-function break alone admits an
        /// identity.
        bytes slhDsaSignature;
    }

    /**
     * @notice Register or rotate a Final Wallet identity from its two public certificates.
     * @dev **Both stages, together.** A wallet has four keys in two stages and the recovery pair is
     *      PRE-COMMITTED — written at wallet initialization from the same certificate set that determined
     *      the wallet's address, which is why enabling post-quantum mode later takes no key arguments. The
     *      two certificates must share a serial: a serial is per certificate SET, so two stages that
     *      disagree about it are two different wallets.
     *
     *      **Chain-attested means pinned, per stage:** the chain's issuer name and authority key, depth
     *      exactly 1 so the certificate hangs directly under the chain, and `maxDelegationDepth == depth` so
     *      the holder issues nothing. That immutable pair is what {identityTreeLeafOf} discriminates record
     *      kinds by.
     *
     *      Issuance authority is the registrar quorum and possession is the holder's own proof; there is no
     *      root keypair anywhere and no certificate-authority signature over this admission.
     * @param account The wallet address the certificate set derives.
     * @param liveTbs The live certificate's TBS bytes: the live transaction and access keys.
     * @param recoveryTbs The recovery certificate's TBS bytes: the pre-committed recovery pair.
     * @param proof The holder's two signatures over the admission digest — the live transaction key
     *        (ML-DSA-87) and the live access key (SLH-DSA-SHAKE-256s), both verified in the precompiles
     *        inside this transaction.
     * @param roles Capability bitmask. The one thing the certificates do not say, because capability is this
     *        system's decision rather than the certificate's.
     * @param version Monotonic. A rotation that does not advance it is refused.
     * @param anchorBlock The block the registrars read the roster at. Ignored while bootstrap is open.
     * @param approvals The sealed registrar quorum. Empty while bootstrap is open. The digest binds the
     *        account, both certificates' bytes, the roles and the version.
     * @return certHash The handle the live certificate is now known by.
     */
    function registerWallet(
        address account,
        bytes calldata liveTbs,
        bytes calldata recoveryTbs,
        AdmissionProof calldata proof,
        uint256 roles,
        uint64 version,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external returns (bytes32 certHash) {
        // Read BEFORE the authority check: the quorum path burns this counter
        // inside `_requireRegistrarQuorum`, and the proof must bind the value
        // the round was built over. The bootstrap path burns it explicitly in
        // `_requireAdmissionProof`, so an admission is one-shot in both regimes.
        uint64 admissionNonce = _gateNonce[address(this)];
        _requireMembershipAuthority(
            DOMAIN_REGISTER_WALLET,
            keccak256(
                abi.encode(account, keccak256(liveTbs), keccak256(recoveryTbs), roles, version)
            ),
            anchorBlock,
            approvals
        );

        FinalCertificate.Parsed memory l = FinalCertificate.parseLive(liveTbs);
        FinalCertificate.Parsed memory r = FinalCertificate.parseRecovery(recoveryTbs);
        if (l.serial != r.serial) revert StagesDisagree(l.serial, r.serial);

        _requireChainAttestedEndEntity(l);
        _requireChainAttestedEndEntity(r);
        _requireAdmissionProof(account, l, r.certHash, proof, admissionNonce);

        certHash = l.certHash;
        _write(account, l, r, roles, version, false);
    }

    /**
     * @notice Register or rotate an ISSUER: a third party, or one of this system's own intermediates, that
     *         signs certificates off chain with the keys registered here.
     * @dev Admission is chain-native like any identity — the registrar quorum authorises, and the holder's
     *      own proof of possession establishes that the party controls the keys it is claiming. The
     *      delegation rules survive as LINEAGE: a nested issuer's depth, delegation bound and
     *      `AuthorityKeyId` must chain to its registered parent. No parent signs anything; this chain's
     *      admission IS the issuance.
     *
     *      A registered issuer always expires, and its window is bounded by {MAX_ISSUER_VALIDITY_MS}.
     *
     *      An institution must carry its real ISO 3166 country in its subject name, matching the
     *      `jurisdiction` field of its institution extension. That is enforced at the door because a
     *      verifier's legal recourse starts with knowing where an issuer answers for itself.
     *
     *      `ROLE_CERTIFICATE_AUTHORITY` is added to whatever `roles` asks for, rather than being required in
     *      it: the capability is what this entry point means, so it cannot be forgotten in an argument.
     * @param account The issuer's account on this chain.
     * @param tbs The issuer certificate's TBS bytes: two cert-signing keys, ML-DSA-87 and
     *        SLH-DSA-SHAKE-256s, and no recovery stage — renewing an issuer is re-issuing, a governance act
     *        rather than a key rotation.
     * @param parent The registered parent issuer for a nested intermediate; zero for an issuer hanging
     *        directly under the chain.
     * @param proof The issuer's own two cert-signing keys over the admission digest. The recovery-handle
     *        slot in that digest is zero, because there is no recovery stage to bind.
     * @param roles Capability bitmask, over and above the certificate-authority bit this call adds.
     * @param version Monotonic. A rotation that does not advance it is refused.
     * @param anchorBlock The block the registrars read the roster at. Ignored while bootstrap is open.
     * @param approvals The sealed registrar quorum. Empty while bootstrap is open. The digest binds the
     *        account, the certificate bytes, the parent, the roles and the version.
     * @return certHash The handle the registered certificate is now known by.
     */
    function registerIssuer(
        address account,
        bytes calldata tbs,
        address parent,
        AdmissionProof calldata proof,
        uint256 roles,
        uint64 version,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external returns (bytes32 certHash) {
        uint64 admissionNonce = _gateNonce[address(this)];
        _requireMembershipAuthority(
            DOMAIN_REGISTER_ISSUER,
            keccak256(abi.encode(account, keccak256(tbs), parent, roles, version)),
            anchorBlock,
            approvals
        );

        FinalCertificate.Parsed memory c = FinalCertificate.parseCa(tbs);
        // An issuer that cannot sign is an end entity wearing a profile —
        // and an end entity belongs in `registerWallet`.
        if (c.depth == 0 || c.maxDelegationDepth <= c.depth) {
            revert IssuerCannotSign(c.depth, c.maxDelegationDepth);
        }
        if (c.notAfter == 0) revert IssuerMustExpire();
        if (c.notAfter - c.notBefore > MAX_ISSUER_VALIDITY_MS) {
            revert IssuerValidityTooLong(c.notBefore, c.notAfter);
        }
        if (c.issuerDnHash != CHAIN_ISSUER_DN_HASH) revert WrongIssuerDn(c.issuerDnHash);
        _requireLineage(parent, c);
        _requireJurisdiction(c);
        _requireAdmissionProof(account, c, bytes32(0), proof, admissionNonce);

        certHash = c.certHash;
        _write(account, c, c, roles | ROLE_CERTIFICATE_AUTHORITY, version, true);
    }

    /// @notice The validity ceiling a registered issuer's certificate may not exceed, in this chain's
    ///         milliseconds: two 366-day years.
    /// @dev Expiry is the passive half of an issuer's lifecycle — the touchpoint that proves an issuer is
    ///      still there without anyone having to act — so a registered issuer always carries a real
    ///      `NotAfter` and a bounded window. Renewal re-issues under the same registered keys with a version
    ///      bump rather than extending a certificate in place.
    uint64 public constant MAX_ISSUER_VALIDITY_MS = 2 * 366 days * 1000;

    /// @notice Pin one stage of a chain-attested end-entity certificate.
    /// @dev Three checks, run once per stage: the certificate names the chain's authority key, it carries the
    ///      chain's issuer name, and its depth pair is exactly that of an end entity — depth 1, directly
    ///      under the chain, issuing nothing. The depth pair is immutable per version, which is why
    ///      {identityTreeLeafOf} discriminates record kinds by it rather than by a role bit.
    /// @param c The parsed certificate stage.
    function _requireChainAttestedEndEntity(FinalCertificate.Parsed memory c) private pure {
        if (c.authorityKeyId != CHAIN_AUTHORITY_KEY_ID) revert NotChainAttested(c.authorityKeyId);
        if (c.issuerDnHash != CHAIN_ISSUER_DN_HASH) revert WrongIssuerDn(c.issuerDnHash);
        if (c.depth != 1 || c.maxDelegationDepth != c.depth) {
            revert NotAnEndEntity(c.depth, c.maxDelegationDepth);
        }
    }

    /// @notice Check a nested issuer's lineage to its registered parent.
    /// @dev Delegation is governed by DEPTH, not by a boolean: a parent may sign only while
    ///      `depth < maxDelegationDepth`, a child sits exactly one level down so it cannot skip levels to
    ///      escape that bound, and its own bound may never widen past its parent's. The child's
    ///      `AuthorityKeyId` must equal the parent's `SubjectKeyId`, which is the link the chain follows.
    ///
    ///      A zero `parent` means the issuer hangs directly under the chain: it must then name the chain's
    ///      own authority key and sit at depth 1. No parent SIGNS anything here — admission by this chain is
    ///      the issuance, and lineage is what keeps the delegation bounds honest across it.
    /// @param parent The registered parent issuer, or zero for one directly under the chain.
    /// @param c The parsed issuer certificate.
    function _requireLineage(address parent, FinalCertificate.Parsed memory c) private view {
        if (parent == address(0)) {
            if (c.authorityKeyId != CHAIN_AUTHORITY_KEY_ID) {
                revert NotChainAttested(c.authorityKeyId);
            }
            if (c.depth != 1) revert WrongDepth(c.depth, 1);
            return;
        }
        Identity storage ca = _identity[parent];
        if (!hasRole(parent, ROLE_CERTIFICATE_AUTHORITY)) {
            revert IssuerNotACertificateAuthority(parent);
        }
        // Delegation is governed by depth, not by a boolean. `Depth <
        // MaxDelegationDepth` permits signing, and a child sits exactly one
        // level down — an issuer cannot skip levels to escape its own bound.
        if (ca.depth >= ca.maxDelegationDepth) {
            revert IssuerMayNotSign(parent, ca.depth, ca.maxDelegationDepth);
        }
        if (c.depth != ca.depth + 1) revert WrongDepth(c.depth, ca.depth + 1);
        if (c.maxDelegationDepth > ca.maxDelegationDepth) {
            revert DelegationWidened(c.maxDelegationDepth, ca.maxDelegationDepth);
        }
        if (c.authorityKeyId != ca.subjectKeyId) {
            revert AuthorityKeyIdMismatch(c.authorityKeyId, ca.subjectKeyId);
        }
    }

    /// @notice Refuse an issuer whose subject name carries no jurisdiction, or one that disagrees with its
    ///         institution extension.
    /// @dev An issuer that answers for itself somewhere is an issuer a verifier has recourse against, so a
    ///      registered institution must name its jurisdiction and must name it once. Only the trust root is
    ///      jurisdiction-silent, because the root is the worldwide network rather than a legal entity.
    ///
    ///      The rule is a real ISO 3166 alpha-2 `C=` component in the subject name, equal to the
    ///      `jurisdiction` field of the certificate's institution extension. The name is in canonical
    ///      comma-separated form, so `C=` matches at the start or immediately after a comma, and the
    ///      component value is exactly two bytes — a longer one is a different component that happens to
    ///      start with the same letter.
    /// @param c The parsed issuer certificate.
    function _requireJurisdiction(FinalCertificate.Parsed memory c) private pure {
        bytes memory dn = c.subjectDn;
        bytes2 country;
        bool found = false;
        for (uint256 i = 0; i + 4 <= dn.length; i++) {
            if ((i == 0 || dn[i - 1] == ",") && dn[i] == "C" && dn[i + 1] == "=") {
                // Exactly two bytes, then end-of-DN or the next component.
                if (i + 4 < dn.length && dn[i + 4] != ",") revert JurisdictionMissing();
                country = bytes2(bytes.concat(dn[i + 2], dn[i + 3]));
                found = true;
                break;
            }
        }
        if (!found) revert JurisdictionMissing();

        // Institution extension: legalNameLength ‖ legalName ‖
        // registrationNoLength ‖ registrationNo ‖ jurisdictionLength ‖
        // jurisdiction. The jurisdiction must EQUAL the DN's country.
        bytes memory ext = c.institutionExt;
        if (ext.length < 6) revert JurisdictionMissing();
        uint256 q = 2 + (uint256(uint8(ext[0])) << 8 | uint256(uint8(ext[1])));
        if (ext.length < q + 2) revert JurisdictionMissing();
        q += 2 + (uint256(uint8(ext[q])) << 8 | uint256(uint8(ext[q + 1])));
        if (ext.length < q + 2) revert JurisdictionMissing();
        uint256 jLen = uint256(uint8(ext[q])) << 8 | uint256(uint8(ext[q + 1]));
        q += 2;
        if (jLen != 2 || ext.length < q + 2) revert JurisdictionMismatch();
        if (bytes2(bytes.concat(ext[q], ext[q + 1])) != country) revert JurisdictionMismatch();
    }

    /// @notice Verify the holder's proof of possession over the admission digest.
    /// @dev Both live-stage families, in the precompiles, inside this transaction: an ML-DSA-87 signature
    ///      under the certificate's transaction key and an SLH-DSA-SHAKE-256s signature under its access
    ///      key. Possession lives in the TRANSACTION rather than in the artifact, so holding a copy of
    ///      somebody's public certificate proves nothing.
    ///
    ///      The keys come out of the certificate being admitted, not out of calldata, which is what makes
    ///      this a proof rather than a self-signed assertion.
    ///
    ///      Burns the gate nonce on the bootstrap path — the quorum path burned it already — so an admission
    ///      is one-shot in both regimes and a captured proof cannot be replayed into a second registration.
    /// @param account The account being admitted; named in the revert so a failure is attributable.
    /// @param live The parsed live-stage certificate whose keys verify the proof.
    /// @param recoveryCertHash The recovery certificate's handle, bound into the digest; zero for an issuer.
    /// @param proof The holder's two signatures.
    /// @param admissionNonce The gate-nonce value the digest was built over.
    function _requireAdmissionProof(
        address account,
        FinalCertificate.Parsed memory live,
        bytes32 recoveryCertHash,
        AdmissionProof calldata proof,
        uint64 admissionNonce
    ) private {
        bytes memory message = abi.encodePacked(
            keccak256(
                abi.encode(
                    DOMAIN_IDENTITY_ADMISSION,
                    block.chainid,
                    address(this),
                    live.certHash,
                    recoveryCertHash,
                    admissionNonce
                )
            )
        );
        if (
            !FinalChainPrecompiles.verifyMlDsa87(live.transactionKey, message, proof.mlDsaSignature)
                || !FinalChainPrecompiles.verifySlhDsa(live.accessKey, message, proof.slhDsaSignature)
        ) revert AdmissionProofInvalid(account);
        if (_gateNonce[address(this)] == admissionNonce) {
            _gateNonce[address(this)] = admissionNonce + 1;
        }
    }

    /**
     * @notice Commit one parsed certificate set to storage and project the result.
     * @dev The single write path behind both registration entry points, so a wallet record and an issuer
     *      record cannot diverge in how they are stored. Every authorization, parse and pin has already run;
     *      what is left is the ordering that keeps the record consistent with its indexes.
     *
     *      A rotation RELEASES the previous certificate's binding rather than revoking it: a superseded
     *      certificate and a compromised one are different facts, and revocation is the louder of the two.
     *      The sender binding moves with the transaction key for the same reason — a rotation is the account
     *      disowning that key, and a gate that still resolved the old sender would honour a retired key.
     *
     *      A certificate already bound to another account is refused, and so is a version that does not
     *      advance, so neither a replayed registration nor a stolen certificate can take a record over.
     * @param account The identity being written. Zero is refused.
     * @param live The parsed live-stage certificate; for an issuer, its single certificate.
     * @param recovery The parsed recovery-stage certificate; for an issuer, the same value, discarded.
     * @param roles The complete capability bitmask to store.
     * @param version Monotonic per account. Must exceed the stored value.
     * @param isCa Whether this is a certificate authority, which stores no recovery, seal or
     *        encapsulation material.
     */
    function _write(
        address account,
        FinalCertificate.Parsed memory live,
        FinalCertificate.Parsed memory recovery,
        uint256 roles,
        uint64 version,
        bool isCa
    ) private {
        if (account == address(0)) revert UnknownAccount(account);
        if (certificateRevoked[live.certHash]) revert CertificateIsRevoked(live.certHash);

        address boundTo = accountOfCertificate[live.certHash];
        if (boundTo != address(0) && boundTo != account) {
            revert CertificateAlreadyBound(live.certHash, boundTo);
        }

        Identity storage id = _identity[account];
        if (!id.registered) {
            _accounts.push(account);
            id.registered = true;
        } else {
            if (version <= id.version) revert VersionNotNewer(id.version, version);
            if (id.revoked) revert CertificateIsRevoked(id.certHash);
            // A rotation releases the previous certificate's binding. It is NOT
            // revoked — a superseded certificate and a compromised one are
            // different facts and revocation is the louder of the two.
            if (id.certHash != live.certHash) delete accountOfCertificate[id.certHash];
        }

        id.certHash = live.certHash;
        id.recoveryCertHash = recovery.certHash;
        id.serial = live.serial;
        id.subjectKeyId = live.subjectKeyId;
        id.roles = roles;
        id.depth = live.depth;
        id.maxDelegationDepth = live.maxDelegationDepth;
        id.notBefore = live.notBefore;
        id.notAfter = live.notAfter;
        id.version = version;

        // The sender binding moves with the transaction key. The old sender is
        // released rather than kept: a rotation is the account disowning that
        // key, and a gate that still resolved it would honour a retired key.
        address sender = senderFor(live.transactionKey);
        address senderBoundTo = accountOfSender[sender];
        if (senderBoundTo != address(0) && senderBoundTo != account) {
            revert SenderAlreadyBound(sender, senderBoundTo);
        }
        if (_activeTransactionKey[account].length != 0) {
            address previousSender = senderFor(_activeTransactionKey[account]);
            if (previousSender != sender) delete accountOfSender[previousSender];
        }
        accountOfSender[sender] = account;

        _activeTransactionKey[account] = live.transactionKey;
        _activeAccessKey[account] = live.accessKey;
        // A CA has no recovery pair; the two active slots are all it has.
        _recoveryTransactionKey[account] = isCa ? bytes("") : recovery.transactionKey;
        _recoveryAccessKey[account] = isCa ? bytes("") : recovery.accessKey;
        // Cleared on a rotation to a certificate without one, for the same
        // reason the encapsulation pair is: a stale seal surviving a rotation
        // would let a retired key keep co-signing execution.
        _activeSealKey[account] = isCa ? bytes("") : live.sealKey;

        // The encapsulation pair, validated before it is stored.
        //
        // **The registry is where a sender looks up "encapsulate to this
        // party", so a malformed key here is not a bad record — it is an
        // account nobody can seal an intent to.** The discovery would happen at
        // the first attempt, and on the hybrid path it would happen as a pair
        // silently reduced to one family, which is identical on the wire. The
        // precompiles make it a refusal at registration instead.
        //
        // Neither is a re-implementation of the KEM: `0x0203` runs FIPS 203
        // §7.2's own encapsulation-key check and `0x0207` runs the structural
        // check HQC-5's encoding admits. Encapsulation is a sender operation
        // and decapsulation needs the secret key, so nothing more belongs here.
        //
        // A CA is sealed to by nobody and carries no encapsulation stage, so
        // its slots are cleared rather than checked.
        _storeKemPair(account, isCa, live.kemMlKem, live.kemHqc, true);
        _storeKemPair(account, isCa, recovery.kemMlKem, recovery.kemHqc, false);

        accountOfCertificate[live.certHash] = account;

        emit IdentityRegistered(account, live.certHash, roles, version);
        // Same-tx: a registration or rotation is visible to every execution
        // chain's admission set the moment it is visible here.
        _projectIdentity(account);
    }

    /**
     * @notice Store one stage's encapsulation pair, or clear it.
     * @dev Empty is legitimate and is not the same as absent-and-wrong: a certificate authority has no
     *      encapsulation stage, and a certificate may be issued without one. The parser has already refused
     *      the half-populated case, so by here the pair is both or neither.
     *
     *      Cleared rather than left alone on a rotation to an empty pair. A stale key surviving a rotation is
     *      a sender encapsulating to a credential the account has disowned, and the message then never
     *      decrypts — the failure mode with no error attached, and the one this pairing exists to avoid.
     * @param account The identity being written.
     * @param isCa Whether the record is a certificate authority, which carries no encapsulation stage.
     * @param mlKem The stage's ML-KEM-1024 key, or empty.
     * @param hqc The stage's HQC-5 key, or empty.
     * @param isLive Whether this is the live stage; false selects the recovery slots.
     */
    function _storeKemPair(address account, bool isCa, bytes memory mlKem, bytes memory hqc, bool isLive)
        private
    {
        if (isCa || mlKem.length == 0) {
            delete (isLive ? _activeKemMlKem : _recoveryKemMlKem)[account];
            delete (isLive ? _activeKemHqc : _recoveryKemHqc)[account];
            return;
        }
        if (!FinalChainPrecompiles.isWellFormedMlKem1024(mlKem)) {
            revert MalformedEncapsulationKey(account, FinalCertificate.ALG_ML_KEM_1024);
        }
        if (!FinalChainPrecompiles.isWellFormedHqc5(hqc)) {
            revert MalformedEncapsulationKey(account, FinalCertificate.ALG_HQC_5);
        }
        if (isLive) {
            _activeKemMlKem[account] = mlKem;
            _activeKemHqc[account] = hqc;
        } else {
            _recoveryKemMlKem[account] = mlKem;
            _recoveryKemHqc[account] = hqc;
        }
    }

    /// @notice Grant or withdraw capabilities without rotating keys.
    /// @dev Separate from registration because the two have different cadences: a role changes when a
    ///      service's job changes, a key changes when it is compromised or aged out. Folding them together
    ///      would force a key rotation to express a role change, which is the more dangerous of the two
    ///      operations doing the work of the safer one.
    /// @param account Must already be registered and not revoked.
    /// @param roles The complete new capability bitmask; it replaces the old one rather than merging.
    /// @param anchorBlock The block the registrars read the roster at.
    /// @param approvals The sealed registrar quorum. Empty while bootstrap is open.
    function setRoles(
        address account,
        uint256 roles,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireMembershipAuthority(
            DOMAIN_SET_ROLES, keccak256(abi.encode(account, roles)), anchorBlock, approvals
        );
        Identity storage id = _identity[account];
        if (!id.registered) revert UnknownAccount(account);
        if (id.revoked) revert CertificateIsRevoked(id.certHash);
        uint256 previous = id.roles;
        id.roles = roles;
        _requireRegistrarQuorumReachable();
        emit IdentityRolesChanged(account, previous, roles);
        // Roles are not in the tree-8 leaf, so this rewrites the same value —
        // kept anyway so "every identity mutation projects" has no exceptions
        // to remember.
        _projectIdentity(account);
    }

    /// @notice Refuse a mutation that would leave the registrar quorum unreachable.
    /// @dev Once bootstrap is sealed, that is the one change nothing could ever undo: a registry whose
    ///      threshold exceeds its sealable membership can never be written to again, including to fix
    ///      itself. Checked AFTER the write so the count reflects the mutation being attempted.
    function _requireRegistrarQuorumReachable() private view {
        if (!bootstrapSealed) return;
        uint256 sealable = sealableMemberCount(ROLE_REGISTRAR);
        if (sealable < registrarThreshold) {
            revert RegistrarThresholdUnreachable(sealable, registrarThreshold);
        }
    }

    /// @notice Revoke an identity and its certificate. Irreversible.
    /// @dev Clears the roles as well as setting the flag. Both are checked everywhere, but leaving a revoked
    ///      record carrying roles invites a future reader that checks only one of them. The fingerprints of
    ///      the named LMS slots are recorded into the revocation log after the flag lands, so the log's own
    ///      permanence gate sees the transition it requires.
    /// @param account The identity to retire.
    /// @param chainIds The chains whose LMS-key slots this account holds. The registrars supply the list and
    ///        the approval digest binds it, because a mapping cannot enumerate its own keys. A chain with no
    ///        slot is skipped, and a fingerprint an incomplete list missed stays permanently recordable
    ///        through the revocation log's permissionless door, since a revoked account never regains
    ///        standing.
    /// @param anchorBlock The block the registrars read the roster at.
    /// @param approvals The sealed registrar quorum. Empty while bootstrap is open.
    function revoke(
        address account,
        uint64[] calldata chainIds,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireMembershipAuthority(
            DOMAIN_REVOKE, keccak256(abi.encode(account, chainIds)), anchorBlock, approvals
        );
        Identity storage id = _identity[account];
        if (!id.registered) revert UnknownAccount(account);
        id.revoked = true;
        id.roles = 0;
        certificateRevoked[id.certHash] = true;
        _requireRegistrarQuorumReachable();
        emit IdentityRevoked(account, id.certHash);
        // AFTER the flag lands, so the log's own gate sees the permanent
        // transition it requires.
        for (uint256 i = 0; i < chainIds.length; i++) {
            LmsKey storage k = _lmsKey[account][chainIds[i]];
            if (k.registered) _recordRevokedSigner(lmsSignerId(k.keyId, k.height, k.root));
        }
        _projectIdentity(account);
    }

    /**
     * @notice Root-plane GLOBAL certificate revocation, by `certHash`.
     * @dev The half of the revocation lane that gates registration and covers break-glass: any certificate —
     *      registered here, issued off chain, or never seen — can be killed by handle under the registrar
     *      quorum, because the handle is all a break-glass caller may have.
     *
     *      When the handle is a registered identity's CURRENT certificate the identity falls with it: flag,
     *      roles cleared, same-transaction projection. So revoking by handle is never weaker than {revoke};
     *      it only skips the LMS-slot enumeration, and those fingerprints stay permanently recordable
     *      through the revocation log's own permissionless door.
     * @param certHash The certificate to revoke. Need not correspond to any record.
     * @param anchorBlock The block the registrars read the roster at.
     * @param approvals The sealed registrar quorum. Empty while bootstrap is open.
     */
    function revokeCertificate(
        bytes32 certHash,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireMembershipAuthority(
            DOMAIN_REVOKE_CERTIFICATE, keccak256(abi.encode(certHash)), anchorBlock, approvals
        );
        certificateRevoked[certHash] = true;
        address bound = accountOfCertificate[certHash];
        if (bound != address(0)) {
            Identity storage id = _identity[bound];
            if (!id.revoked) {
                id.revoked = true;
                id.roles = 0;
                _requireRegistrarQuorumReachable();
                emit IdentityRevoked(bound, certHash);
                _projectIdentity(bound);
            }
        }
        emit CertificateRevoked(certHash, address(0));
    }

    /**
     * @notice The issuing identity's half of the revocation lane: a registered issuer revokes a certificate
     *         it signed off chain, by `certHash`.
     * @dev This records WHO revoked, and a verifier honours the entry only when the recorded revoker is the
     *      certificate's own issuer — which the verifier knows, because it holds the certificate. It
     *      deliberately does NOT set the global `certificateRevoked` flag: that flag gates registration, and
     *      letting any registered issuer set it for an arbitrary handle would be a griefing lane over other
     *      people's certificates.
     *
     *      Anyone may SUBMIT. Authority is the two signatures — the issuer's registered cert-signing keys
     *      over a digest binding this registry, this chain, the handle and the issuer's own gate nonce, both
     *      verified in the precompiles inside this transaction. The keys come from storage, so a submitter
     *      cannot supply the pair its own signatures verify under.
     *
     *      One-way: the first revoker of a handle is recorded and a second write is refused, because
     *      "revoked twice by two parties" is two facts where this lane models one.
     * @param issuer The registered certificate authority making the statement.
     * @param certHash The certificate being revoked.
     * @param proof The issuer's own ML-DSA-87 and SLH-DSA-SHAKE-256s signatures over the revocation digest.
     */
    function revokeIssuedCertificate(
        address issuer,
        bytes32 certHash,
        AdmissionProof calldata proof
    ) external {
        if (!hasRole(issuer, ROLE_CERTIFICATE_AUTHORITY)) {
            revert IssuerNotACertificateAuthority(issuer);
        }
        if (certificateRevokedBy[certHash] != address(0)) revert CertificateIsRevoked(certHash);
        uint64 nonce = _gateNonce[issuer];
        _gateNonce[issuer] = nonce + 1;
        bytes memory message = abi.encodePacked(
            keccak256(
                abi.encode(
                    DOMAIN_ISSUER_CERT_REVOCATION,
                    block.chainid,
                    address(this),
                    issuer,
                    certHash,
                    nonce
                )
            )
        );
        if (
            !FinalChainPrecompiles.verifyMlDsa87(
                _activeTransactionKey[issuer], message, proof.mlDsaSignature
            )
                || !FinalChainPrecompiles.verifySlhDsa(
                    _activeAccessKey[issuer], message, proof.slhDsaSignature
                )
        ) revert AdmissionProofInvalid(issuer);
        certificateRevokedBy[certHash] = issuer;
        emit CertificateRevoked(certHash, issuer);
    }

    // ---------------------------------------------------------------- views

    /// @notice The full identity record.
    /// @dev Returns the zero struct for an address no record claims, so `registered` is the field to branch
    ///      on rather than any of the hashes.
    /// @param account The identity to read.
    /// @return The stored record, copied to memory.
    function identityOf(address account) external view returns (Identity memory) {
        return _identity[account];
    }

    /// @notice The live transaction key, ML-DSA-87: what a quorum vote is verified against.
    /// @dev Read from STORAGE by every quorum on this chain, never from a caller's argument — a key supplied
    ///      as calldata proves nothing, because anyone holding a keypair can sign under it.
    /// @param account The identity to read.
    /// @return The raw public key, or empty when the account holds none.
    function activeTransactionKeyOf(address account) external view returns (bytes memory) {
        return _activeTransactionKey[account];
    }

    /// @notice The live access key, SLH-DSA-SHAKE-256s: identity, rotation, and guardianship.
    /// @dev A different hardness assumption from the transaction key, so a lattice break leaves the key that
    ///      governs identity standing intact.
    /// @param account The identity to read.
    /// @return The raw public key, or empty when the account holds none.
    function activeAccessKeyOf(address account) external view returns (bytes memory) {
        return _activeAccessKey[account];
    }

    /// @notice The seal key, SLH-DSA-SHAKE-256s: what `FinalPqQuorum` verifies an approval's seal against.
    /// @dev A service's second hash-based key, distinct from its access key, so a quorum decision carries
    ///      one signature from each hardness assumption. Empty when the identity carries no seal, in which
    ///      case it cannot take part in a sealed quorum at all — which is why {sealableMemberCount} counts
    ///      this rather than counting role bits.
    /// @param account The identity to read.
    /// @return The raw public key, or empty when the account holds no seal.
    function activeSealKeyOf(address account) external view returns (bytes memory) {
        return _activeSealKey[account];
    }

    /// @notice The recovery-stage transaction key, ML-DSA-87.
    /// @dev Authorizes rotating this account's own credentials and nothing else — acting as a guardian is an
    ///      ordinary action for an account and uses the live keys. Empty for a certificate authority.
    /// @param account The identity to read.
    /// @return The raw public key, or empty when the account holds none.
    function recoveryTransactionKeyOf(address account) external view returns (bytes memory) {
        return _recoveryTransactionKey[account];
    }

    /// @notice The recovery-stage access key, SLH-DSA-SHAKE-256s.
    /// @dev The other half of the pre-committed recovery stage. Empty for a certificate authority, which has
    ///      no recovery stage at all.
    /// @param account The identity to read.
    /// @return The raw public key, or empty when the account holds none.
    function recoveryAccessKeyOf(address account) external view returns (bytes memory) {
        return _recoveryAccessKey[account];
    }

    /// @notice The four signing-key commitments, in the order tree 1's leaf wants them.
    /// @dev keccak, not SHA3: these feed `FinalWalletFactory.accountStateLeafHash`, which every execution
    ///      chain verifies with, and that one hashes with keccak. An account missing a slot commits to the
    ///      hash of the empty string rather than reverting, so the leaf stays buildable for a certificate
    ///      authority, which holds no recovery pair.
    /// @param account The identity to commit to.
    /// @return liveAccess Commitment to the live access key.
    /// @return liveTransaction Commitment to the live transaction key.
    /// @return recoveryAccess Commitment to the recovery access key.
    /// @return recoveryTransaction Commitment to the recovery transaction key.
    function keyCommitments(address account)
        external
        view
        returns (
            bytes32 liveAccess,
            bytes32 liveTransaction,
            bytes32 recoveryAccess,
            bytes32 recoveryTransaction
        )
    {
        liveAccess = keccak256(_activeAccessKey[account]);
        liveTransaction = keccak256(_activeTransactionKey[account]);
        recoveryAccess = keccak256(_recoveryAccessKey[account]);
        recoveryTransaction = keccak256(_recoveryTransactionKey[account]);
    }

    /**
     * @notice The tree-8 leaf `account` currently earns: the execution chains' identity leaf while the
     *         identity stands, zero once it does not.
     * @dev The leaf VALUE is `keccak256(DOMAIN_IDENTITY_LEAF ‖ serial ‖ keysHash)` — byte-identical to
     *      `IdentityRootModule.identityLeafHash`, which is also the `certHash` inside a wallet's address
     *      derivation — with `keysHash` folded exactly as the certificate issuer folds it:
     *      `keccak256(activeAccess ‖ activeTransaction ‖ recoveryAccess ‖ recoveryTransaction ‖ activeKem ‖
     *      recoveryKem)`, six commitment words packed in slot order. The issuing tooling and this function
     *      are pinned against each other by test over the premined certificate fixtures, because a wallet
     *      whose address was derived from a different fold is a wallet no chain can admit.
     *
     *      Zero — the empty slot's own value, unprovable as a leaf because no certificate hashes to it — for
     *      anything that must not admit a wallet creation: a revoked identity, one outside its validity
     *      window, and any certificate authority. The authority exclusion is STRUCTURAL rather than a role
     *      read: an end entity has `depth == maxDelegationDepth` because it issues nothing, an authority
     *      never does, and that pair is immutable per version where `roles` is not.
     *
     *      Lives here rather than on the state-trees contract that consumes it because every input is this
     *      contract's storage, and the trees contract has no bytecode headroom to spare.
     * @param account The identity to project. Reverts for an account with no record at all.
     * @return The tree-8 leaf value, or zero while the identity does not stand.
     */
    function identityTreeLeafOf(address account) external view returns (bytes32) {
        Identity storage id = _identity[account];
        if (!id.registered) revert UnknownAccount(account);
        if (id.revoked || !_withinValidity(id)) return bytes32(0);
        if (id.depth != id.maxDelegationDepth) {
            // An ISSUER exists in tree 8 under its own domain, so its record is stapleable for offline
            // licence verification while the distinct domain keeps it out of wallet admission. `certHash`
            // suffices — it covers the whole TBS and the verifier holds the certificate — `version` makes
            // supersession move the leaf, and the third word RESERVES the issuer's own certificate-tree
            // anchor, zero until one is wired. Zero-on-revoke above is load-bearing for both record kinds:
            // a fresh staple is an unrevoked statement.
            return keccak256(
                abi.encodePacked(DOMAIN_ISSUER_LEAF, id.certHash, uint64(id.version), bytes32(0))
            );
        }
        bytes32 liveKem = keccak256(
            abi.encodePacked(DOMAIN_KEM_BUNDLE, _activeKemMlKem[account], _activeKemHqc[account]));
        bytes32 recoveryKem = keccak256(
            abi.encodePacked(DOMAIN_KEM_BUNDLE, _recoveryKemMlKem[account], _recoveryKemHqc[account]));
        bytes32 keysHash = keccak256(
            abi.encodePacked(
                keccak256(_activeAccessKey[account]),
                keccak256(_activeTransactionKey[account]),
                keccak256(_recoveryAccessKey[account]),
                keccak256(_recoveryTransactionKey[account]),
                liveKem,
                recoveryKem
            )
        );
        return keccak256(abi.encodePacked(DOMAIN_IDENTITY_LEAF, id.serial, keysHash));
    }

    /// @notice Per-stage encapsulation commitments, in the order the account-state leaf wants them.
    /// @dev One word per STAGE, folded over both of that stage's encapsulation public keys under
    ///      `DOMAIN_KEM_BUNDLE`. The pair is the unit — an account holds both keys or neither — so
    ///      committing to them separately would model a state the protocol does not recognise, and every
    ///      downstream record would carry two words where one says the same thing.
    ///
    ///      An account whose certificate carries no encapsulation stage folds the empty string here rather
    ///      than reverting: the projection into the state trees must keep succeeding for it, and a leaf that
    ///      cannot be built is a party that cannot be revoked.
    /// @param account The identity to commit to.
    /// @return liveKem The live stage's encapsulation commitment.
    /// @return recoveryKem The recovery stage's encapsulation commitment.
    function kemCommitments(address account)
        external
        view
        returns (bytes32 liveKem, bytes32 recoveryKem)
    {
        liveKem = keccak256(
            abi.encodePacked(DOMAIN_KEM_BUNDLE, _activeKemMlKem[account], _activeKemHqc[account]));
        recoveryKem = keccak256(
            abi.encodePacked(DOMAIN_KEM_BUNDLE, _recoveryKemMlKem[account], _recoveryKemHqc[account]));
    }

    /// @notice The live-stage encapsulation keys themselves, for a party composing a sealed message.
    /// @dev Returns both halves of the pair together because the pair is the unit: encapsulating to one
    ///      family alone is indistinguishable on the wire from a hybrid, and silently dropping the hedge is
    ///      the failure this pairing exists to prevent. Empty for an account with no encapsulation stage.
    /// @param account The party to encapsulate to.
    /// @return activeMlKem The lattice half, ML-KEM-1024.
    /// @return activeHqc The code-based half, HQC-5.
    function kemKeysOf(address account)
        external
        view
        returns (bytes memory activeMlKem, bytes memory activeHqc)
    {
        return (_activeKemMlKem[account], _activeKemHqc[account]);
    }

    // ------------------------------------------------------------- senders

    /**
     * @notice The sender address a transaction key produces on this chain.
     * @dev `keccak256(uint8(4) ‖ publicKey)[12:]` — byte-identical to what the node derives from a
     *      post-quantum transaction envelope and to the backend's own derivation. The leading algorithm byte
     *      is what domain-separates it, so a key of another family can never derive the same address.
     *
     *      Pure, so a client can compute the address from a certificate before the identity is registered —
     *      which is what lets an admission transaction be funded and submitted from the very sender it is
     *      about to bind.
     * @param transactionKey The raw ML-DSA-87 public key.
     * @return The sender address that key signs from.
     */
    function senderFor(bytes memory transactionKey) public pure returns (address) {
        return address(uint160(uint256(keccak256(abi.encodePacked(ENVELOPE_ALG_ML_DSA_87, transactionKey)))));
    }

    /// @notice The sender `account`'s transactions arrive from.
    /// @dev The forward direction of {accountOfSender}, derived rather than stored, so it cannot disagree
    ///      with the transaction key on record.
    /// @param account The identity to resolve.
    /// @return The derived sender, or zero for an account with no transaction key on record.
    function senderOf(address account) external view returns (address) {
        bytes storage key = _activeTransactionKey[account];
        if (key.length == 0) return address(0);
        return senderFor(key);
    }

    /// @notice {hasRole} for a `msg.sender`: resolves the sender to its identity first.
    /// @dev The form every `msg.sender` gate on this chain uses. A sender is derived from a transaction key
    ///      and holds no authority itself, so asking it directly would be asking the wrong address. False for
    ///      a sender no identity claims.
    /// @param sender The address a transaction arrived from.
    /// @param roleMask The capability required.
    /// @return Whether the identity behind that sender stands and carries the whole mask.
    function senderHasRole(address sender, uint256 roleMask) external view returns (bool) {
        address account = accountOfSender[sender];
        return account != address(0) && hasRole(account, roleMask);
    }

    /// @notice How many accounts carrying `roleMask` also hold a seal key — the members that can take part
    ///         in a sealed quorum.
    /// @dev The count every membership threshold is checked against, because membership approvals are the
    ///      hybrid class and a member with no seal can never contribute one. A certificate authority
    ///      carrying `ROLE_REGISTRAR` is registered from a certificate with no seal slot, so it is counted
    ///      out here rather than being discovered at the first quorum that fails to reach its threshold.
    /// @param roleMask The capability the quorum is over.
    /// @return sealable How many standing accounts carry the mask and hold a seal key.
    function sealableMemberCount(uint256 roleMask) public view returns (uint256 sealable) {
        uint256 n = _accounts.length;
        for (uint256 i = 0; i < n; i++) {
            address a = _accounts[i];
            if (hasRole(a, roleMask) && _activeSealKey[a].length != 0) sealable++;
        }
    }

    /// @notice Number of registered accounts.
    /// @dev Never decreases: revocation clears a record's roles and sets its flag but leaves it in the list,
    ///      so an index handed out once keeps pointing at the same account for good.
    /// @return How many accounts have ever been registered.
    function accountCount() external view returns (uint256) {
        return _accounts.length;
    }

    /// @notice Registered account by index, in registration order.
    /// @dev Reverts on an out-of-range index rather than answering zero, so a caller paging the list cannot
    ///      mistake the end of it for a hole in the middle.
    /// @param index Position in the registration-ordered list, below {accountCount}.
    /// @return The account at that position.
    function accountAt(uint256 index) external view returns (address) {
        return _accounts[index];
    }

    /// @notice Every account carrying every bit in `roleMask`.
    /// @dev A view, so the linear scan over the account list costs nothing to a caller reading off chain.
    ///      Callers that need a roster inside a transaction pass the member list explicitly instead — see
    ///      `FinalPqQuorum`, which takes signers rather than searching for them, so a quorum's cost does not
    ///      grow with the size of the registry.
    /// @param roleMask The capability to filter on.
    /// @return found The matching accounts, in registration order.
    function accountsWithRole(uint256 roleMask) external view returns (address[] memory found) {
        uint256 n = _accounts.length;
        address[] memory buf = new address[](n);
        uint256 count;
        for (uint256 i = 0; i < n; i++) {
            if (hasRole(_accounts[i], roleMask)) {
                buf[count++] = _accounts[i];
            }
        }
        found = new address[](count);
        for (uint256 i = 0; i < count; i++) {
            found[i] = buf[i];
        }
    }

    /**
     * @notice How many accounts could satisfy a quorum for `roleMask` right now.
     * @dev The number a threshold has to be reachable against. A threshold above it is not a strict quorum,
     *      it is a quorum that cannot be met — and the way that presents is an operation reverting forever
     *      with nothing naming the roster as the cause. Counts standing alone; use {sealableMemberCount} for
     *      a quorum that also needs a seal.
     * @param roleMask The capability the quorum is over.
     * @return live How many standing accounts carry the whole mask.
     */
    function liveMemberCount(uint256 roleMask) public view returns (uint256 live) {
        uint256 n = _accounts.length;
        for (uint256 i = 0; i < n; i++) {
            if (hasRole(_accounts[i], roleMask)) live++;
        }
    }

    /**
     * @notice Whether `account` currently carries every bit in `roleMask`.
     * @dev Every gate in this system asks this one question, so every gate gets the same answer: registered,
     *      not revoked, inside its validity window, and holding the capability. A caller that checked only
     *      the role bit would accept an expired certificate.
     *
     *      `roleMask == 0` is false. A zero mask asks nothing and must not read as "yes" — that is the shape
     *      of an uninitialised configuration variable, and the one reading it must not be a universal pass.
     *
     *      Every bit in the mask must be present, so a mask naming two capabilities asks for both rather than
     *      either.
     * @param account The account to test.
     * @param roleMask One or more `ROLE_*` bits, OR-ed together.
     * @return Whether the account stands and carries the whole mask.
     */
    function hasRole(address account, uint256 roleMask) public view returns (bool) {
        if (roleMask == 0) return false;
        Identity storage id = _identity[account];
        if (!id.registered || id.revoked) return false;
        if (id.roles & roleMask != roleMask) return false;
        return _withinValidity(id);
    }

    /// @notice Whether `account` is registered, unrevoked and in date, regardless of capability.
    /// @dev The standing half of {hasRole}, for callers that care that a party is honoured at all rather
    ///      than that it holds a particular capability. {lmsSignerIsLive} asks this rather than spelling the
    ///      three conditions out a second time, because a second spelling is how two answers drift apart.
    /// @param account The account to test. An address no record claims answers false.
    /// @return Whether the identity currently stands.
    function isActive(address account) public view returns (bool) {
        Identity storage id = _identity[account];
        return id.registered && !id.revoked && _withinValidity(id);
    }

    /// @notice Whether a record's certificate is inside its validity window right now.
    /// @dev Both bounds are milliseconds on this chain's clock and both are optional: a zero `notBefore`
    ///      means valid from issuance and a zero `notAfter` means never expires, which the certificate
    ///      schema allows and personal identity certificates use. The upper bound is exclusive, so a
    ///      certificate stops being honoured on the millisecond it names rather than after it.
    /// @param id The record to test, taken as a storage pointer so no copy of a multi-word struct is made.
    /// @return Whether the window admits the current block time.
    function _withinValidity(Identity storage id) private view returns (bool) {
        if (id.notBefore != 0 && FinalChainTime.nowMs() < id.notBefore) return false;
        if (id.notAfter != 0 && FinalChainTime.nowMs() >= id.notAfter) return false;
        return true;
    }


    // ------------------------------------------------------------------ sweep

    /// @inheritdoc FinalSweep
    /// @dev The registry's own configuration gate, in the `msg.sender` form a no-argument seam can express:
    ///      the bootstrap admin alone while the window is open, a live registrar afterwards.
    ///
    ///      The rest of the state plane inherits this rule from `FinalPlaneSweep`, which reads it off a
    ///      registry pointer. This contract answers it from its own storage because it IS that registry, and
    ///      importing the shared mixin here would make this file import a file that imports it back.
    ///
    ///      The sealed half of the gate is a K-of-N over `ROLE_REGISTRAR` whose approvals arrive in calldata,
    ///      which `sweepAsset`'s shared signature has no room for; what survives is membership in that same
    ///      roster. The narrowing is safe because the other two gates hold regardless: a sweep moves surplus
    ///      only, this contract owes nothing, so there is nothing behind the line to reach — and the
    ///      destination is not the caller's to invent.
    function _requireSweepAuthority() internal view override {
        if (!bootstrapSealed && msg.sender == bootstrapAdmin) return;
        if (hasRole(msg.sender, ROLE_REGISTRAR)) return;
        revert SweepUnauthorized(msg.sender);
    }

    /// @inheritdoc FinalSweep
    /// @dev The bootstrap admin, and the proven authority that called. The first of those is zero once the
    ///      window is sealed, which `FinalSweep` refuses as a destination, so a sealed registry can only
    ///      sweep to the registrar that authorised the sweep.
    function _sweepDestinations() internal view override returns (address, address) {
        return (bootstrapAdmin, msg.sender);
    }

    /// @dev Nothing is reserved because nothing is owed: the registry holds
    /// certificates and role bits, has no payable entrypoint and no custody
    /// line. Anything it carries arrived by accident.
}

contracts/finalchain/FinalPlaneSweep.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may inherit this mixin from a contract deployed as
//    part of a Final DeFi Protocol state plane, and may operate the asset-rescue
//    surface it completes.
// 2. Integrators, indexers and operators may call the resulting rescue surface
//    where the state plane's own configuration authority permits it, and may
//    read the authority and destination answers it gives.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this mixin or a competing state-plane rescue
//    authority without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

import {FinalSweep} from "../utils/FinalSweep.sol";
import {FinalIdentityRegistry} from "./FinalIdentityRegistry.sol";

/**
 * @title Final Plane Sweep
 * @notice The authority and destination halves of the shared asset-rescue surface, answered once for every
 *         contract of the protocol's own state plane.
 * @dev `FinalSweep` gives every contract that can end up holding a stray asset one rescue surface and leaves two
 *      questions for the inheritor: who may call it, and where the value may go. Every contract on this state
 *      plane answers both the same way — the registry's bootstrap admin alone while that window is open, and the
 *      sealed registrar authority afterwards — and stating that once per contract would be one chance per
 *      contract to state it differently. An inheritor of this mixin answers a single question instead: which
 *      registry is mine.
 *
 *      **The authority is the plane's own configuration gate, narrowed to what a fixed signature can carry.**
 *      The sealed half of that gate is a K-of-N over the registrar role, and its approvals arrive in CALLDATA.
 *      The rescue entrypoint's signature is shared across every contract on the plane and cannot grow a
 *      per-contract quorum argument, so what survives into a no-argument `internal view` is MEMBERSHIP: the
 *      bootstrap admin while the window is open, and afterwards any account the registry currently attests as a
 *      live registrar.
 *
 *      That is a narrowing — one registrar rather than K of them — and it is deliberate rather than overlooked.
 *      Two other gates make it safe, and a registrar can widen neither:
 *
 *        - a rescue moves SURPLUS only. Every contract that owes something declares the debt as a reservation,
 *          and no key reaches behind that line: an intent log's bonds, a billing plane's prepaid credit and a gas
 *          well's entire float are all unreachable by this surface however it is called.
 *        - the destination is not the caller's to invent.
 *
 *      A registrar already configures tree writers, thresholds and consumers. An account that can decide who may
 *      write the account tree is not meaningfully restrained from moving a stray token, so demanding a quorum
 *      ceremony for the rescue lane would buy nothing and would instead guarantee the lane is never used when it
 *      is needed. No new role and no new authority pointer is introduced here: the registrar role is the
 *      registry's own, and membership in it moves in the registry rather than in any contract that reads it.
 *
 *      **The destination is the authority that ordered the rescue.** This state plane has no treasury pointer,
 *      and adding one would be exactly the new authority this mixin is not allowed to invent — a per-contract
 *      treasury setter would need its own quorum action on every contract of the plane, to configure something
 *      the plane has never needed. So the two legitimate destinations are the two addresses already proven: the
 *      bootstrap admin, and the caller.
 *
 *      The caller is not a free parameter. The rescue entrypoint proves the authority BEFORE it resolves
 *      destinations, so by the time this mixin is asked, the sender is already either the bootstrap admin or a
 *      live registrar. Every service on this chain is a Final Wallet with a registered identity and no EOA
 *      signing key, so the value lands on an account the chain itself attests to. What the gate rules out is the
 *      thing worth ruling out: a rescue paying an address the plane knows nothing about.
 *
 *      Once the bootstrap window is sealed the admin address is zero, and the base contract refuses a zero
 *      destination, so the pair collapses to the caller alone — one legitimate destination, which is the case the
 *      base contract already handles.
 */
abstract contract FinalPlaneSweep is FinalSweep {
    /// @notice The membership registry an inheriting contract's configuration gate reads.
    /// @dev The one question this mixin leaves open, and the only line an inheritor has to supply. It exists
    ///      because some contracts of the plane hold the registry directly while others reach it through another
    ///      contract they already hold, and both must resolve to the SAME registry their configuration answers
    ///      to — a rescue authority read from a different source would be a second authority in disguise.
    /// @return The registry whose bootstrap admin and registrar membership decide this contract's rescue
    ///         authority and destinations.
    function _sweepRegistry() internal view virtual returns (FinalIdentityRegistry);

    /// @notice The plane's configuration gate, in the caller-only form the shared rescue surface can express.
    /// @dev Two accepting branches, checked in order: the bootstrap admin while the window is open, and any live
    ///      registrar once it is sealed. The bootstrap branch is guarded on the seal as well as on the address,
    ///      so it closes the moment the window does rather than depending on the admin field being cleared.
    ///      Membership is read live from the registry on every call, so revoking a registrar there revokes this
    ///      authority everywhere on the plane at once. Anything else reverts.
    function _requireSweepAuthority() internal view virtual override {
        FinalIdentityRegistry reg = _sweepRegistry();
        if (!reg.bootstrapSealed() && msg.sender == reg.bootstrapAdmin()) return;
        if (reg.hasRole(msg.sender, reg.ROLE_REGISTRAR())) return;
        revert SweepUnauthorized(msg.sender);
    }

    /// @notice The two addresses a rescue on this plane may pay.
    /// @dev The bootstrap admin, and the authority that called — which the base contract has already proven by
    ///      the time this is read, so the second is never an address of the caller's choosing. After the seal the
    ///      admin half is the zero address, which the base contract refuses as a destination, leaving the proven
    ///      caller as the single legitimate target.
    /// @return The bootstrap admin, and the proven caller.
    function _sweepDestinations() internal view virtual override returns (address, address) {
        return (_sweepRegistry().bootstrapAdmin(), msg.sender);
    }
}

contracts/finalchain/FinalPqQuorum.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may deploy and operate this quorum as part of a
//    Final DeFi Protocol chain, and may inherit it to gate an action behind a
//    post-quantum K-of-N.
// 2. Integrators, auditors, and node operators may read its membership and
//    thresholds and independently re-verify any approval it recorded, as part
//    of their integration with the Final DeFi Protocol.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this quorum or a competing identity or
//    authorization plane derived from it without permission prior to the
//    Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

import {FinalChainPrecompiles} from "./FinalChainPrecompiles.sol";
import {FinalIdentityRegistry} from "./FinalIdentityRegistry.sol";

/**
 * @title FinalPqQuorum
 * @notice K-of-N approval where the signatures are post-quantum and the chain
 *         is what checks them.
 *
 * @dev This library is the reason Final Chain exists in this design.
 *
 * `FinalBackend/src/pq/credential.js` carries a rule it had to enforce in code
 * because nothing else could: **a surface whose signature is verified on chain
 * cannot be PQ.** A co-signer approval reaching `FinalRootAuthority` is checked
 * by ECDSA/ERC-1271 in Solidity, so a PQ co-signer would produce approvals the
 * contract cannot read, and the quorum would stop reaching threshold with
 * nothing in any log naming the cause. `PQ_SURFACE` and `assertBackendVerified`
 * exist to keep anyone from crossing that line by accident.
 *
 * Here the line is gone. The precompiles verify ML-DSA-87 and
 * SLH-DSA-SHAKE-256s natively, so a quorum can be PQ *and* on chain, and
 * "the backend says these four signatures verified" becomes "these four
 * signatures verify, and any node re-derives that independently".
 *
 * ## Three rules, each closing a specific hole
 *
 * 1. **Keys come from the registry, never from calldata.** A key passed as an
 *    argument proves nothing — anyone with a keypair can sign under it. This is
 *    the difference between a 4-of-5 quorum and a 1-of-1 held by whoever built
 *    the transaction.
 *
 * 2. **Signers strictly ascending.** One comparison per entry rejects duplicates
 *    outright, so a single member cannot supply four approvals and satisfy a
 *    threshold of four. The alternative — an O(n²) seen-check — is the same
 *    guarantee with more ways to get it wrong.
 *
 * 3. **The digest binds chain id and verifying contract.** Without both, an
 *    approval collected for one contract is replayable against another with the
 *    same payload shape, and an approval from the test chain is replayable on
 *    the production one. These co-signers hold one key across environments.
 *
 * ## Which algorithm
 *
 * The stack splits its keys by hardness assumption, not by convenience:
 * ML-DSA-87 (lattice) signs transactions, SLH-DSA-SHAKE-256s (hash-based) signs
 * identity. Two families, so one cryptanalytic result cannot take both.
 *
 * So an action inherits the class of what it authorizes. Advancing a state root
 * is operational and high-cadence: transaction class. Registering or revoking
 * an identity is the thing the access class exists for. `ALG_ANY` is available
 * and should be used sparingly — accepting either means a break in one family
 * takes the quorum.
 *
 * A MEMBERSHIP action — the registrar quorum that admits, re-roles or revokes
 * an identity and upgrades a plane contract — takes both: the ML-DSA-87
 * approval and a `seal`, an SLH-DSA-SHAKE-256s signature over the same digest
 * by the member's `activeSeal` key. The seal key is its own slot — never the
 * access key — so the process that seals cannot also rotate the identity it
 * seals for. Every OPERATIONAL action — a bundle root or payload appended to
 * the log, a settlement leaf, an account-state write, a tree write, a PHI
 * movement — takes the ML-DSA-87 approval alone (the user's ruling of 12 Sep
 * 2026, arch/quorum-signing-ml-dsa.md Q1/Q4): the SLH-DSA family is exercised
 * at the boundary where a member JOINS — the joiner's own proof of possession
 * over the admission digest, verified here through `0x0205` — and by a holder
 * on its ledger actions, not on every bundle. An SLH-DSA seal costs a Cloud Run
 * co-signer about forty seconds per digest, and the fleet paid it once per
 * member per bundle; ML-DSA-87 signs in milliseconds under the key the member
 * already votes with.
 *
 * Every digest binds an `anchorBlock`: the block at which the members read
 * tree 1 to decide who is in the round. Binding it means every approval in a
 * round was made against ONE roster view, and the window in `require_` means a
 * view older than `ANCHOR_WINDOW` blocks is refused rather than honoured.
 *
 * The practical cost is worth stating: an SLH-DSA signature is 29,792 bytes, so
 * a 4-of-5 membership-class quorum is ~119 KB of calldata. That is affordable
 * here only because this is our own chain and membership changes are rare. Do
 * not carry this pattern to a chain where it is not.
 */
library FinalPqQuorum {
    /// @notice ML-DSA-87 — FIPS 204. Algorithm ids are the FIPS numbers: the
    /// same ids `FinalCertificate` and the backend registry use, and the numbers
    /// the precompile addresses end in (`0x0204`).
    uint8 internal constant ALG_ML_DSA_87 = 4;
    /// @notice SLH-DSA-SHAKE-256s — FIPS 205 (`0x0205`).
    uint8 internal constant ALG_SLH_DSA_SHAKE_256S = 5;
    /// @notice Either scheme is acceptable for this action.
    uint8 internal constant ALG_ANY = 0;

    /// @notice How far behind the chain head an approval's anchor may sit.
    /// @dev Members evaluate roster membership against tree 1 AT the anchor
    /// block. 600 blocks is ten minutes at the chain's one-second cadence —
    /// generous against a round that takes seconds, and short enough that a
    /// roster rotated away is refused rather than counted.
    uint64 internal constant ANCHOR_WINDOW = 600;

    /// @dev Domain separator for every quorum digest. Distinct from any
    /// EIP-712 domain in the stack: these are not typed-data signatures and
    /// must not be confusable with one.
    bytes32 internal constant DOMAIN_PQ_QUORUM = keccak256("FINAL_CHAIN_PQ_QUORUM_v01");

    /// @notice One member's approval.
    struct Approval {
        /// The member's account, which is also the key it is looked up by.
        address signer;
        /// `ALG_ML_DSA_87` or `ALG_SLH_DSA_SHAKE_256S`.
        uint8 algorithm;
        /// Over the 32-byte digest from `digest()`, verbatim. Both schemes
        /// hash internally, so the digest is not re-hashed before signing.
        bytes signature;
        /// SLH-DSA-SHAKE-256s over the same digest, by the member's `activeSeal`
        /// key. Required by the membership class (the registrar quorum); an
        /// operational action never reads it, so it is empty there.
        bytes seal;
    }

    /// @notice Thrown when fewer valid approvals were supplied than the action requires.
    /// @param valid Approvals that verified.
    /// @param required Approvals the action demands.
    error ThresholdNotMet(uint256 valid, uint256 required);
    /// @notice Thrown when approvals are not in strictly ascending signer order.
    /// @dev Ascending order is what makes duplicate detection a single comparison instead of a quadratic scan,
    ///      so it is the rule that stops one signer being counted twice toward a threshold.
    /// @param previous The preceding signer.
    /// @param next The signer that failed to exceed it.
    error SignersNotAscending(address previous, address next);
    /// @notice Thrown when an approving signer does not hold the role this action is gated on.
    /// @param signer The approving signer.
    /// @param roleMask The role the action requires.
    error SignerLacksRole(address signer, uint256 roleMask);
    /// @notice Thrown when an approval is signed under an algorithm this action does not accept.
    /// @param signer The approving signer.
    /// @param got The algorithm the approval declared.
    /// @param required The algorithm the action demands.
    error WrongAlgorithm(address signer, uint8 got, uint8 required);
    /// @notice Thrown when an approval's signature fails verification in the precompile.
    /// @param signer The approving signer.
    /// @param algorithm The algorithm it was verified under.
    error BadSignature(address signer, uint8 algorithm);
    /// @notice Thrown when an approval's access seal fails verification.
    /// @param signer The approving signer.
    error BadSeal(address signer);
    /// @notice Thrown when an approval anchors to a block this chain has not reached.
    /// @param anchorBlock The block the approval anchored to.
    /// @param blockNumber The current block.
    error AnchorAhead(uint64 anchorBlock, uint256 blockNumber);
    /// @notice Thrown when an approval's anchor is older than the accepted window.
    /// @dev Bounding the window is what stops an approval collected once being replayed indefinitely later.
    /// @param anchorBlock The block the approval anchored to.
    /// @param blockNumber The current block.
    error AnchorStale(uint64 anchorBlock, uint256 blockNumber);
    /// @notice Thrown when an action is gated on a threshold of zero.
    /// @dev Refused rather than treated as "no approvals needed": a zero threshold is always a
    ///      misconfiguration, and reading it as permissive would silently remove the quorum.
    error ThresholdIsZero();

    /**
     * @notice The message every member of this quorum signs.
     * @param verifyingContract The contract consuming the approvals. Binding it
     *        stops an approval collected for one contract being replayed
     *        against another with the same payload shape.
     * @param actionDomain What is being authorized — a per-action constant, so
     *        an approval for "advance the accounts tree" cannot be replayed as
     *        one for "revoke an identity".
     * @param anchorBlock The Final Chain block the members read tree 1 at to
     *        decide the roster. Bound here so every approval in a round names
     *        the same view; checked against `ANCHOR_WINDOW` by `require_`.
     * @param payloadDigest The action's own committed content. Callers MUST
     *        include a nonce or a monotonic counter in it; nothing here can
     *        tell a replay of round 7 from a fresh round 7.
     */
    function digest(
        address verifyingContract,
        bytes32 actionDomain,
        uint64 anchorBlock,
        bytes32 payloadDigest
    ) internal view returns (bytes32) {
        return keccak256(
            abi.encode(
                DOMAIN_PQ_QUORUM,
                block.chainid,
                verifyingContract,
                actionDomain,
                anchorBlock,
                payloadDigest
            )
        );
    }

    /**
     * @notice Reverts unless at least `threshold` distinct members holding
     *         `roleMask` have signed `quorumDigest`.
     * @param registry Where public keys and roles come from. Not a parameter
     *        for flexibility — a parameter so the caller's own immutable
     *        registry address is what is used, rather than one from calldata.
     * @param requiredAlgorithm `ALG_ANY` to accept either scheme.
     * @param anchorBlock The anchor the digest was built over. Refused if it is
     *        ahead of this block or more than `ANCHOR_WINDOW` behind it.
     * @param requireSeal Whether every approval must also carry a valid `seal`
     *        by the member's `activeSeal` key — the membership class (the
     *        registrar quorum). Operational actions pass `false`.
     * @return valid The number of approvals that verified, which is at least
     *         `threshold` if this returns at all.
     *
     * @dev Every failure reverts with the offending signer named. A quorum that
     * silently skipped bad approvals and counted the rest would let a
     * misconfigured co-signer sit broken indefinitely: the threshold would keep
     * being met by the others and nothing would say one member had stopped
     * contributing. That is exactly the failure this program has already had,
     * in `fanOut`, where a per-chain advance failure was recorded and execution
     * continued.
     */
    function require_(
        FinalIdentityRegistry registry,
        Approval[] calldata approvals,
        bytes32 quorumDigest,
        uint256 roleMask,
        uint256 threshold,
        uint8 requiredAlgorithm,
        uint64 anchorBlock,
        bool requireSeal
    ) internal view returns (uint256 valid) {
        if (threshold == 0) revert ThresholdIsZero();
        if (anchorBlock > block.number) revert AnchorAhead(anchorBlock, block.number);
        if (block.number - anchorBlock > ANCHOR_WINDOW) revert AnchorStale(anchorBlock, block.number);

        bytes memory message = abi.encodePacked(quorumDigest);
        address previous = address(0);

        uint256 n = approvals.length;
        for (uint256 i = 0; i < n; i++) {
            Approval calldata a = approvals[i];

            // Strictly ascending. `address(0)` as the initial value works
            // because it can never be a registered signer.
            if (a.signer <= previous) revert SignersNotAscending(previous, a.signer);
            previous = a.signer;

            if (!registry.hasRole(a.signer, roleMask)) revert SignerLacksRole(a.signer, roleMask);

            if (requiredAlgorithm != ALG_ANY && a.algorithm != requiredAlgorithm) {
                revert WrongAlgorithm(a.signer, a.algorithm, requiredAlgorithm);
            }

            if (!_verify(registry, a, message)) revert BadSignature(a.signer, a.algorithm);
            if (requireSeal && !_verifySeal(registry, a, message)) revert BadSeal(a.signer);

            valid++;
        }

        if (valid < threshold) revert ThresholdNotMet(valid, threshold);
    }

    /// @notice Non-reverting form, for views and for callers that want to
    /// report rather than refuse.
    function count(
        FinalIdentityRegistry registry,
        Approval[] calldata approvals,
        bytes32 quorumDigest,
        uint256 roleMask,
        uint8 requiredAlgorithm,
        uint64 anchorBlock,
        bool requireSeal
    ) internal view returns (uint256 valid) {
        if (anchorBlock > block.number || block.number - anchorBlock > ANCHOR_WINDOW) return 0;
        bytes memory message = abi.encodePacked(quorumDigest);
        address previous = address(0);
        uint256 n = approvals.length;
        for (uint256 i = 0; i < n; i++) {
            Approval calldata a = approvals[i];
            if (a.signer <= previous) return valid;
            previous = a.signer;
            if (!registry.hasRole(a.signer, roleMask)) continue;
            if (requiredAlgorithm != ALG_ANY && a.algorithm != requiredAlgorithm) continue;
            if (!_verify(registry, a, message)) continue;
            if (requireSeal && !_verifySeal(registry, a, message)) continue;
            valid++;
        }
    }

    /// @dev The seal: SLH-DSA-SHAKE-256s by the member's `activeSeal` key over
    /// the same digest. A member with no seal key on record cannot seal, and an
    /// approval with no seal bytes is not one.
    function _verifySeal(
        FinalIdentityRegistry registry,
        Approval calldata a,
        bytes memory message
    ) private view returns (bool) {
        bytes memory key = registry.activeSealKeyOf(a.signer);
        if (key.length == 0 || a.seal.length == 0) return false;
        return FinalChainPrecompiles.verifySlhDsa(key, message, a.seal);
    }

    /// @dev Verifies one approval against the key the REGISTRY holds for that signer, never against a key
    ///      supplied in the approval. A key passed as an argument proves nothing, because anyone holding a
    ///      keypair can sign under it; reading from storage is what makes the verdict re-derivable from public
    ///      state rather than a claim by whoever assembled the call.
    /// @param registry The identity registry that holds each signer's live keys.
    /// @param a The approval being verified.
    /// @param message The exact bytes the approval must cover.
    /// @return valid True when the signature verifies under the signer's live key for the declared algorithm.
    function _verify(
        FinalIdentityRegistry registry,
        Approval calldata a,
        bytes memory message
    ) private view returns (bool) {
        // The LIVE pair, always. The recovery pair authorizes rotating this
        // account's own credentials and NOTHING else — a quorum that accepted
        // it would hand the recovery keys everyday authority, which is exactly
        // the separation the two stages exist to draw.
        if (a.algorithm == ALG_ML_DSA_87) {
            return FinalChainPrecompiles.verifyMlDsa87(
                registry.activeTransactionKeyOf(a.signer), message, a.signature
            );
        }
        if (a.algorithm == ALG_SLH_DSA_SHAKE_256S) {
            return FinalChainPrecompiles.verifySlhDsa(
                registry.activeAccessKeyOf(a.signer), message, a.signature
            );
        }
        // Any other id is a refusal, never a default — including the KEM ids
        // (3, 7) and the reserved FN-DSA id (6), none of which is a signature
        // scheme this quorum verifies.
        return false;
    }
}

contracts/finalchain/FinalSlotKeyRegistry.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may deploy this slot-key registry as part of a Final
//    DeFi Protocol chain, and may operate that chain.
// 2. Co-signers may publish their per-slot encapsulation keys through it, and
//    integrators, indexers and end users may read those keys and seal to them,
//    as part of their integration with the Final DeFi Protocol.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this slot-key registry or a competing sealing
//    directory derived from it without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

import {FinalIdentityRegistry} from "./FinalIdentityRegistry.sol";
import {FinalStateTrees, ISlotKeySource} from "./FinalStateTrees.sol";
import {FinalPlaneSweep} from "./FinalPlaneSweep.sol";

/**
 * @title Final Slot Key Registry
 * @notice The co-signers' per-slot ML-KEM publics — what a private intent is
 *         sealed to.
 *
 * @dev Time is cut into slots of `SLOT_SECONDS`. A member publishes, ahead of
 * time, one KEM public key per slot it will serve; a sealer picks the slot of
 * the intent's scheduled time and encrypts to K members' keys for that slot;
 * shortly before execution those members decapsulate off chain. What lives here
 * is the HASH of each key with its algorithm and window — the bytes ride the
 * `SlotKeyPublished` event and the co-signer's own endpoint, and a sealer
 * checks what it fetched against tree 8 branch 3, which {FinalStateTrees.
 * syncSlotKeyLeaves} projects from {slotKeyLeafOf} in the same transaction.
 *
 * Storing the hash rather than the key is what keeps the directory honest
 * without making this contract a key server: a sealer may fetch the bytes from
 * anywhere, but it can only trust them once they hash to the leaf the tree
 * proves.
 *
 * Who may publish: the identity behind `msg.sender`. Every transaction on this
 * chain is a 0x46 envelope signed by an identity's ML-DSA-87 transaction key,
 * so the sender IS the authenticated identity; the registry resolves it to its
 * account (`accountOfSender`) and checks `publisherRole`. No second signature.
 *
 * A slot goes COLD `GRACE_SECONDS` after it ends: {slotKeyLeafOf} answers zero
 * and anyone may {retire} it so the tree forgets the key. A key cannot be
 * swapped once its slot has started — a sealer that already encrypted to it
 * must be able to be opened.
 *
 * **The chain's clock is in milliseconds.** `block.timestamp` on the Final Chain
 * counts milliseconds (the intent log's `executeNotBefore` and `deadline` follow
 * the same convention). Every window here is in SECONDS, so the contract reads
 * its own "now" through {nowSeconds} and never compares `block.timestamp`
 * directly; `slotOf` takes wall-clock seconds and answers the slot index, so the
 * fleet, the wallet and this contract name the same slot.
 *
 * **Where this runs.** The project's own reth-based chains and nowhere else.
 * Sender authentication depends on those chains' post-quantum transaction
 * envelope and on a registry that verifies signatures in precompiles they alone
 * provide, so `accountOfSender` has no meaning anywhere else. Nothing under
 * `contracts/` outside the Final Chain directory imports this contract, and it
 * takes part in no CREATE2 derivation. Gas is deliberately NOT a design
 * constraint here: the published key bytes ride an event in full rather than
 * being trimmed, so the directory is reconstructible from chain data alone.
 *
 * **Immutable, and behind no proxy.** The registry, the trees and the publisher
 * role are all fixed at construction, so any change to this surface is a
 * redeploy at a new address; the trees must then be repointed through
 * `setSlotKeySource`, and keys published here do not travel — the publishers
 * republish, and until they do, branch 3 projects zero.
 */
contract FinalSlotKeyRegistry is ISlotKeySource, FinalPlaneSweep {
    /// @notice One slot: ten minutes (ruled 2026-09-03). The tree's ring
    ///         (`SLOT_KEY_RING` = 1024) therefore spans ~7 days, past `MAX_AHEAD_SECONDS`.
    uint64 public constant SLOT_SECONDS = 600;
    /// @notice How far ahead a key may be published: the two-day generation
    ///         lead a publisher works to, plus a day of margin.
    /// @dev Bounded rather than open-ended so a compromised publisher cannot
    ///      claim years of future slots in one transaction and leave the
    ///      directory pinned to keys it no longer controls.
    uint64 public constant MAX_AHEAD_SECONDS = 72 hours;
    /// @notice A key stays usable this long after its slot ends — the window a
    ///         late execution still opens in.
    uint64 public constant GRACE_SECONDS = 3600;
    /// @notice The one algorithm today: ML-KEM-1024 (FIPS 203).
    /// @dev The only value `publishSlotKeys` accepts. It is a field on the
    ///      stored key and inside the leaf, so a directory that ever carries a
    ///      second scheme stays unambiguous about which key is which — a sealer
    ///      never has to infer the scheme from a key's length.
    uint8 public constant ALGORITHM_ML_KEM_1024 = 1;
    /// @notice Domain the tree-8 branch-3 leaf is hashed under.
    /// @dev Binds the member, the slot and the algorithm alongside the key
    ///      hash, so a key published for one slot cannot be presented as the
    ///      key for another, and a leaf cannot be lifted between members.
    bytes32 public constant DOMAIN_SLOT_KEY_LEAF = keccak256("FINAL_SLOT_KEY_LEAF_v01");

    /// @notice The registry a publisher's identity and role are resolved through.
    /// @dev `immutable`, so the roster behind `publisherRole` cannot be swapped
    ///      for one an attacker controls.
    FinalIdentityRegistry public immutable registry;
    /// @notice The state trees whose branch 3 this registry's verdict feeds.
    /// @dev `immutable` for the same reason. The trees must in turn name this
    ///      contract as their `slotKeySource`, or the projection call reverts
    ///      and no key ever reaches a sealer.
    FinalStateTrees public immutable trees;
    /// @notice Role mask a publishing identity must hold (the co-signers).
    uint256 public immutable publisherRole;

    /// @notice One member's key for one slot, as this contract records it.
    /// @dev The KEY BYTES are deliberately not here — only their hash. The
    ///      bytes ride `SlotKeyPublished` and the member's own endpoint, so
    ///      this contract stays a directory rather than a key server.
    struct SlotKey {
        /// @dev `keccak256` of the published encapsulation public key.
        bytes32 keyHash;
        /// @dev Which scheme the key belongs to; one of the `ALGORITHM_*` values.
        uint8 algorithm;
        /// @dev When the key was published, for operators auditing lead times.
        uint64 publishedAt;
    }

    /// @notice Published keys, by member and slot.
    /// @dev Never cleared. A slot past its grace window simply projects zero
    ///      through {slotKeyLeafOf}, so the tree forgets the key while the
    ///      record of what was published stays readable.
    mapping(address member => mapping(uint64 slotIndex => SlotKey)) private _keys;

    /// @notice A member published its encapsulation key for one slot.
    /// @dev Carries the FULL key bytes, which is how a sealer obtains them
    ///      without trusting an endpoint: fetch from anywhere, then check the
    ///      hash against the tree.
    /// @param member The publishing identity's account.
    /// @param slotIndex The slot the key serves.
    /// @param algorithm The key's scheme.
    /// @param keyHash `keccak256` of the key bytes — what the leaf commits to.
    /// @param kemPublic The encapsulation public key, in full.
    event SlotKeyPublished(
        address indexed member, uint64 indexed slotIndex, uint8 algorithm, bytes32 keyHash, bytes kemPublic
    );

    /// @notice The sender resolves to no identity, or to one without the publisher role.
    /// @param sender The transaction sender that was refused.
    error NotASlotKeyPublisher(address sender);
    /// @notice A scheme this registry does not accept was offered.
    /// @param algorithm The rejected scheme id.
    error UnsupportedAlgorithm(uint8 algorithm);
    /// @notice The slot list and the key list were not the same length.
    error LengthMismatch();
    /// @notice A zero-length key was offered for a slot.
    /// @dev Refused rather than stored: an empty key hashes to a value a leaf
    ///      would carry perfectly happily, and a sealer would encrypt to
    ///      nothing.
    /// @param slotIndex The slot the empty key was offered for.
    error EmptyKey(uint64 slotIndex);
    /// @notice The slot has already ended and passed its grace window.
    /// @param slotIndex The expired slot.
    error SlotInThePast(uint64 slotIndex);
    /// @notice The slot begins beyond `MAX_AHEAD_SECONDS` from now.
    /// @param slotIndex The over-distant slot.
    error SlotTooFarAhead(uint64 slotIndex);
    /// @notice The slot has already begun and this member already published for it.
    /// @dev A key may be replaced only before its slot opens. Once a sealer may
    ///      have encrypted to it, swapping it would leave an intent nobody can
    ///      open.
    /// @param member The publishing identity's account.
    /// @param slotIndex The slot already in progress.
    error SlotAlreadyLive(address member, uint64 slotIndex);

    /// @notice Pin the registry, the trees and the role a publisher must hold.
    /// @dev All three are `immutable`: this contract's whole authority model is
    ///      "the identity behind the sender holds this role in that registry",
    ///      and a mutable pointer on either side would be a way to replace the
    ///      roster rather than to join it.
    /// @param registry_ The identity registry senders are resolved through.
    /// @param trees_ The state trees this registry projects into.
    /// @param publisherRole_ Role mask a publishing identity must hold.
    constructor(FinalIdentityRegistry registry_, FinalStateTrees trees_, uint256 publisherRole_) {
        registry = registry_;
        trees = trees_;
        publisherRole = publisherRole_;
    }

    // ------------------------------------------------------------- slots

    /// @notice The slot a timestamp falls in.
    /// @dev The one definition of the slot grid, on chain so a sealer and a
    ///      publisher cannot disagree about which slot an instant belongs to.
    /// @param timestamp The instant, in seconds.
    /// @return The slot index containing it.
    function slotOf(uint64 timestamp) public pure returns (uint64) {
        return timestamp / SLOT_SECONDS;
    }

    /// @notice `[start, end)` of a slot.
    /// @dev Half-open, so consecutive slots neither overlap nor leave a gap.
    ///      A key stays usable until `end + GRACE_SECONDS`, which is a separate
    ///      question from the window itself.
    /// @param slotIndex The slot to bound.
    /// @return start First instant in the slot, in seconds.
    /// @return end First instant after the slot, in seconds.
    function slotWindow(uint64 slotIndex) public pure returns (uint64 start, uint64 end) {
        start = slotIndex * SLOT_SECONDS;
        end = start + SLOT_SECONDS;
    }

    // ----------------------------------------------------------- publish

    /**
     * @notice Publish (or, before the slot starts, replace) this identity's
     *         KEM public for each slot. Projects the leaves in the same
     *         transaction.
     * @dev The caller carries no arguments naming itself: the member is derived
     * from the authenticated sender, so a publisher can only ever write its own
     * slots. The projection runs in the same transaction, so the directory and
     * the tree are never observably out of step.
     *
     * Four bounds per slot, each refusing rather than clamping: a slot past its
     * grace window, a slot beyond `MAX_AHEAD_SECONDS`, an empty key, and a
     * replacement for a slot that has already opened. The last is the one that
     * protects sealers — a key swapped mid-slot leaves an intent nobody can
     * open — and it deliberately permits a FIRST publication into a live slot,
     * which is late but not dangerous.
     *
     * A batch is all-or-nothing: one bad slot reverts the whole call rather
     * than leaving a publisher unsure which of its slots landed.
     * @param slotIndexes The slots being published for.
     * @param kemPublics The encapsulation public keys, one per slot, in order.
     * @param algorithm The scheme the keys belong to.
     */
    function publishSlotKeys(uint64[] calldata slotIndexes, bytes[] calldata kemPublics, uint8 algorithm) external {
        address member = registry.accountOfSender(msg.sender);
        if (member == address(0) || !registry.hasRole(member, publisherRole)) revert NotASlotKeyPublisher(msg.sender);
        if (algorithm != ALGORITHM_ML_KEM_1024) revert UnsupportedAlgorithm(algorithm);
        if (slotIndexes.length != kemPublics.length) revert LengthMismatch();
        uint64 now_ = nowSeconds();
        for (uint256 i = 0; i < slotIndexes.length; i++) {
            uint64 slot = slotIndexes[i];
            (uint64 start, uint64 end) = slotWindow(slot);
            if (end + GRACE_SECONDS <= now_) revert SlotInThePast(slot);
            if (start > now_ + MAX_AHEAD_SECONDS) revert SlotTooFarAhead(slot);
            if (kemPublics[i].length == 0) revert EmptyKey(slot);
            if (start <= now_ && _keys[member][slot].keyHash != bytes32(0)) revert SlotAlreadyLive(member, slot);
            bytes32 keyHash = keccak256(kemPublics[i]);
            _keys[member][slot] = SlotKey({keyHash: keyHash, algorithm: algorithm, publishedAt: now_});
            emit SlotKeyPublished(member, slot, algorithm, keyHash, kemPublics[i]);
        }
        trees.syncSlotKeyLeaves(member, slotIndexes);
    }

    /// @notice Re-project a member's slots — permissionless, because the leaf
    ///         value is this contract's own verdict: a lapsed slot projects to
    ///         zero and the tree forgets the key.
    /// @dev Open on purpose. A slot lapses by TIME, which moves no storage
    ///      here, so no mutation hook can fire for it and something has to be
    ///      able to push the retirement. The strongest thing any caller can do
    ///      is copy the verdict {slotKeyLeafOf} already gives, which is why
    ///      opening it costs nothing.
    /// @param member The identity whose slots are re-projected.
    /// @param slotIndexes The slots to re-project. Live ones are simply
    ///        rewritten with the value they already carry.
    function retire(address member, uint64[] calldata slotIndexes) external {
        trees.syncSlotKeyLeaves(member, slotIndexes);
    }

    // -------------------------------------------------------------- views

    /// @notice The chain's clock in SECONDS — `block.timestamp` on the Final Chain is in milliseconds.
    /// @dev The one place this contract reads time. Every window (`SLOT_SECONDS`,
    ///      `GRACE_SECONDS`, `MAX_AHEAD_SECONDS`) and the slot grid (`slotOf`) are
    ///      in seconds, so this is what they are compared against. Reading the raw
    ///      stamp made every slot "in the past" (the 2026-09-04 deploy).
    function nowSeconds() public view returns (uint64) {
        return uint64(block.timestamp / 1000);
    }

    /// @notice The stored key for a slot (hash, algorithm, when published).
    /// @dev The raw record, WITHOUT the freshness verdict: a slot long past its
    ///      grace window still answers the key it was given. Ask {isUsable} or
    ///      {slotKeyLeafOf} before sealing to it.
    /// @param member The identity that published.
    /// @param slotIndex The slot to read.
    /// @return The stored record; zeroed when nothing was published.
    function slotKeyOf(address member, uint64 slotIndex) external view returns (SlotKey memory) {
        return _keys[member][slotIndex];
    }

    /// @notice Whether the slot's key can still be sealed to / opened with.
    /// @dev Exactly the leaf verdict, so this view and the tree can never
    ///      disagree about whether a key is live.
    /// @param member The identity that published.
    /// @param slotIndex The slot to check.
    /// @return True while the key stands, false once it has lapsed or was never set.
    function isUsable(address member, uint64 slotIndex) external view returns (bool) {
        return slotKeyLeafOf(member, slotIndex) != bytes32(0);
    }

    /// @inheritdoc ISlotKeySource
    /// @dev This contract's whole verdict, in one place: zero when nothing was
    ///      published and zero once the slot's grace window has passed,
    ///      otherwise the leaf binding member, slot, algorithm and key hash. The
    ///      tree copies whatever this answers, so retirement needs no separate
    ///      write path and no authority — time alone decides it.
    function slotKeyLeafOf(address member, uint64 slotIndex) public view returns (bytes32) {
        SlotKey storage k = _keys[member][slotIndex];
        if (k.keyHash == bytes32(0)) return bytes32(0);
        (, uint64 end) = slotWindow(slotIndex);
        if (nowSeconds() > end + GRACE_SECONDS) return bytes32(0);
        return keccak256(abi.encode(DOMAIN_SLOT_KEY_LEAF, member, slotIndex, k.algorithm, k.keyHash));
    }

    // ------------------------------------------------------------------ sweep

    /// @notice The registry the inherited sweep authority resolves members through.
    /// @dev This contract's configuration gate reads the membership registry it
    /// was constructed against, so the sweep authority reads the same one. One
    /// registry for both means a member removed from the roster loses the sweep
    /// at the same instant it loses the right to publish.
    /// @return The immutable identity registry pinned at construction.
    function _sweepRegistry() internal view override returns (FinalIdentityRegistry) {
        return registry;
    }

    /// @dev Nothing is reserved because nothing is owed: this contract has no
    /// payable entrypoint and no custody line — it records, it does not hold.
    /// Anything it carries arrived by accident and is sweepable in full.
}

contracts/finalchain/FinalStateTrees.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may deploy this state-tree contract as the state
//    plane of a Final DeFi Protocol chain, and may operate that chain.
// 2. Integrators, indexers, operators and end users may read every tree, take
//    inclusion proofs, branch roots, tree roots and round roots from it, and
//    write into a tree they hold the quorum, the writer seat or the
//    configuration authority for, as part of their integration with the Final
//    DeFi Protocol.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this state-tree contract or a competing state
//    plane derived from it without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

import {FinalIdentityRegistry} from "./FinalIdentityRegistry.sol";
import {FinalChainTime} from "./FinalChainTime.sol";
import {FinalPqQuorum} from "./FinalPqQuorum.sol";
import {FinalPlaneSweep} from "./FinalPlaneSweep.sol";
import {FinalChainInitializable} from "./FinalChainInitializable.sol";

/// @title Chain Source
/// @notice The one question `syncIdentities` asks the asset registry.
/// @dev An interface rather than an import of `FinalAssetRegistry`, which
///      imports this file: the registry is tree 6's writer and holds the trees
///      as an immutable, so the dependency runs that way and this is the one
///      read that runs the other.
interface IChainSource {
    /// @notice Every chain reference the asset registry currently has enabled.
    /// @dev Read once per `syncIdentities` batch, so a service account's
    ///      `deployedChains` table is DERIVED from registry state instead of
    ///      being supplied by the caller. A caller-chosen table would let
    ///      anyone place a service identity on a chain of their choosing,
    ///      which is why the projection reads and never accepts.
    /// @return The enabled chain references, in the registry's own order.
    function enabledChainRefs() external view returns (bytes32[] memory);
}

/// @title Slot Key Source
/// @notice The one question {FinalStateTrees.syncSlotKeyLeaves} asks the
///         slot-key registry: the leaf value for one member's slot — the
///         registry's own verdict, zero when the slot holds nothing usable.
interface ISlotKeySource {
    /// @notice The leaf value one member's slot-key ring position carries.
    /// @dev The registry decides; this contract only copies. Zero is the
    ///      answer for a slot that never held a key and for one whose window
    ///      has passed, so re-projecting a lapsed slot retires its leaf.
    /// @param member The co-signer whose slot key is being read.
    /// @param slotIndex The slot the key belongs to, before the ring modulus.
    /// @return The registry's leaf value, or zero when the slot holds nothing usable.
    function slotKeyLeafOf(address member, uint64 slotIndex) external view returns (bytes32);
}

/// @title Endpoint Source
/// @notice The one question {FinalStateTrees.syncEndpointLeaves} asks the
///         endpoint registry: the leaf value for one tunnel endpoint — the
///         registry's own verdict (certificate hash, status, expiry, region),
///         zero when nothing is registered under the id.
interface IEndpointSource {
    /// @notice The leaf value one tunnel endpoint carries.
    /// @dev The registry admitted the certificate under its own quorum with
    ///      the holder's proof of possession, so this read carries a verdict
    ///      rather than a claim. Zero means nothing stands under the id.
    /// @param endpointId The endpoint's certificate subject key id.
    /// @return The registry's leaf value, or zero when nothing is registered under the id.
    function endpointLeafOf(bytes32 endpointId) external view returns (bytes32);
}

/**
 * @title Final State Trees
 * @notice Final Chain's state plane: eight fixed-depth Merkle trees, and the rounds that publish all
 *         eight of their roots as one contemporaneous snapshot.
 *
 * @dev This contract runs on the project's own reth-based chains and nowhere else. Every signer is
 * resolved through an identity registry that verifies post-quantum signatures in precompiles those chains
 * alone provide, so a deployment anywhere else cannot authorize a single write. Nothing under
 * `contracts/` outside the Final Chain directory imports it, and it takes part in no CREATE2 derivation —
 * its address is whatever its deploy transaction produced, never a mined constant that other code pins.
 * Gas is deliberately NOT a design constraint here and must not be optimised for: full sibling paths are
 * stored, every branch enumerates on chain, and a configuration row keeps its value beside its hash,
 * precisely so that no reader ever has to rebuild anything off chain to be sure of it.
 *
 * **Immutable, and behind no proxy.** There is no upgrade path and no authority that can replace this
 * code. Any change to the surface below is a REDEPLOY at a new address, and everything holding the old
 * address — the account ledger, the registries, the records contract, every service configured against
 * it, every consumer pinning a root — is orphaned the moment that happens and has to be repointed. The
 * registry projections into trees 1 and 8 do not travel with a redeploy either: they are derived from the
 * registry, so a fresh deployment re-derives them rather than migrating anything.
 *
 * ## What each tree carries
 *
 * One tree per domain, because they change at unrelated cadences and a combined tree invalidates every
 * outstanding proof on every tick:
 *
 * | # | tree | holds | cadence |
 * |---|---|---|---|
 * | 1 | accounts | every Final Wallet's public state | per rotation / creation |
 * | 2 | phi | the PHI record: per (wallet, chain) balances, the lock, exposures | per publisher round |
 * | 3 | vasset | issued vAsset supply and backing, per (asset, chain) | per settlement |
 * | 4 | oracle | published prices and their inputs | ~10 s; 1 s for morph and fee assets |
 * | 5 | settlement | chain and asset registry roots | rarely |
 * | 6 | allowlist | assets, chains, policy, price sources, DEX deployments | rarely |
 * | 7 | intents | intent status, ring-keyed over the posting sequence | per posting |
 * | 8 | identity | the wallet-creation admission set, projected from the registry | per identity mutation |
 *
 * ## Tree 1 is READ, never rebuilt
 *
 * Tree 1 is a Final Wallet's public state and the SOURCE OF TRUTH every execution chain projects from.
 * The sanctioned way to ask it a question is {proofFor} for the sibling path and {liveRoot} for the root
 * each chain republishes — {branchProofFor} with {branchRoot} to prove against a branch instead,
 * {roundProofFor} with {roundRootAt} to prove against a published round. Those entrypoints are the whole
 * interface, and their answers are the only ones that verify.
 *
 * Do NOT fold the same leaves off chain. This tree is FIXED DEPTH — `DEPTH` levels, with a branch subtree
 * at `BRANCH_DEPTH` — zero-padded to that depth, and INSERTION-ORDERED: a key keeps the slot it was first
 * handed, permanently, and empty slots hash as the empty subtree rather than being skipped. A rebuild
 * that sorts its leaves, or sizes itself `log2(n)` to the number of leaves present, is a DIFFERENT tree.
 * Its root is not this root, no proof against it verifies anywhere, and nothing in the failure names the
 * cause: the execution chain simply refuses a proof that looks perfectly well formed.
 *
 * ## Who may write which tree
 *
 * Four kinds of door, and every tree sits on exactly one of the first three:
 *
 * - **A service quorum.** {setLeaves} for trees 5 and 6, {setAccountStates} for tree 1: at least
 *   `threshold[treeId]` approvals from members holding `writerRole[treeId]`, each an ML-DSA-87 vote over
 *   a digest binding the tree, its nonce and the whole batch. Tree 1's round additionally carries each
 *   member's SLH-DSA seal, because a leaf there states who an account IS on every chain.
 * - **A typed writer.** Trees 2, 3 and 4 are reachable only through {writeTyped}, from the records
 *   contract, which holds the preimage behind each leaf and computes the hash from it. {setLeaves}
 *   refuses those three outright, so a stored value can never drift from the commitment beside it.
 * - **A writer contract.** `treeWriter[treeId]` writes its tree with no quorum at all: the account ledger
 *   for tree 1, the intent log for tree 7, the ledger again for tree 8's user admissions. Trees 7 and 8
 *   have no quorum path whatsoever — {setLeaves} refuses both.
 * - **The configuration authority.** Branch 0 of every tree through {setConfig}, plus the pointers,
 *   rosters and thresholds themselves. Never a tree's own writer or quorum: what a service states is not
 *   authority over how that service is configured.
 *
 * `treeWriter[1]` being the account ledger, with no service quorum layered on top, is the design and not
 * a gap. A writer contract is not a key: its rules are its bytecode, it has no owner and no proxy, and it
 * authorizes every transition by verifying the ACCOUNT HOLDER'S own SLH-DSA credential against the
 * commitment this chain holds. That is stronger evidence than a K-of-N of our own services attesting to
 * what they read. A quorum on top would be strictly worse than nothing — it would let operators withhold
 * approval from a user rotating a stolen key, which is a censorship power over the exact operation the
 * account plane exists to make possible.
 *
 * ## Seeding the chain and asset trees
 *
 * Trees 5 and 6 are the two a fresh plane cannot infer. Tree 5 carries the settlement chain and asset
 * registry roots; tree 6 carries the allowlist those roots stand over — supported chains, supported
 * assets, policy, price sources, DEX deployments. Both are quorum-written, and both are expected to be
 * SEEDED before the plane is usable: an execution chain copies its chain set and its asset set from these
 * roots, so an unseeded pair means every settlement toward a chain is refused at the source and no vAsset
 * ever registers. A test plane seeds the test chains; a production plane seeds the production chains and
 * their assets. `chainSource` belongs in the same window, because `syncIdentities` derives a service
 * account's `deployedChains` table from the enabled chain set, and an unset source quietly produces
 * service leaves that exist on Final Chain alone.
 *
 * The bootstrap ordering is load bearing in one more place: {configureTree} refuses a threshold no live
 * roster can meet, so members are registered first and trees configured after. A plane whose trees were
 * never configured accepts no quorum write at all while looking perfectly healthy from outside.
 *
 * ## The hash shape is not a choice
 *
 * Leaves hash as `keccak256(0x00 ‖ leaf)` and internal nodes as
 * `keccak256(0x01 ‖ lo ‖ hi)` with the pair sorted. That is
 * `FinalMerkle.verifyTaggedSortedProof`, verbatim, which is what
 * `FinalWalletFactory.syncAccountState` and `FinalSettlement` already run on
 * every supported chain. A proof produced here is consumed there with no
 * translation and no contract change, and tree 1's leaf preimage is exactly
 * `FinalWalletFactory.accountStateLeafHash` — same fields, same order, the
 * `deployedChains` table `abi.encode`d like every other field.
 *
 * Getting this wrong is not a compile error anywhere. It is a root every chain
 * silently rejects, with nothing pointing at the cause.
 *
 * ## Positional slots under a sorted-pair tree
 *
 * Sorted pairs make a proof position-agnostic, which is why it carries no
 * direction bits. That does not stop the TREE from being positional, and here
 * it is: every key gets a permanent slot, so a single leaf update is `DEPTH`
 * hashes instead of a rebuild over every leaf. The verifier neither knows nor
 * needs to know that a slot exists.
 *
 * ## Branches
 *
 * The slot space of every tree is cut into `BRANCH_COUNT` branches by the top
 * `BRANCH_BITS` of the slot: a branch is a subtree with a permanent place, its
 * root is one internal node, and a leaf's path to the tree root passes through
 * it. Branches hold what belongs to the same domain but not to the same rows
 * — branch 0 is the owning service's CONFIGURATION on every tree, tree 8 adds
 * the owner → wallets index and the co-signers' slot keys beside the admission
 * set — and they are chosen over more trees because a branch shares its
 * tree's authority doors and writer, while a tree would need its own. A leaf
 * proves against its branch root with `BRANCH_DEPTH` siblings, against the
 * tree root with `DEPTH`, against the round root with `ROUND_DEPTH`: one path,
 * cut at three heights, one verifier.
 *
 * ## Rounds, and why the live roots are not the product
 *
 * `setLeaves` moves a tree. It does not publish one. A consumer that fetched
 * eight roots one at a time would get a price proof from one moment and a
 * roster proof from another, and something delisted in between would still
 * verify.
 *
 * `publishRound` snapshots all eight together, and folds them into ONE round
 * root — the tree roots as the level-`DEPTH` nodes of a depth-`ROUND_DEPTH`
 * tree, tree `t` at position `t` — so a single word commits to the whole
 * plane and any leaf in it proves against that word with four more siblings.
 * A round is the unit a consumer pins, and it is the only thing this contract
 * promises is contemporaneous. The execution chains keep anchoring per-tree
 * roots (identity, account state, registry roots): those must move at their
 * own cadence, not at the oracle's.
 */
contract FinalStateTrees is FinalPlaneSweep, FinalChainInitializable {
    // ---------------------------------------------------------------- trees

    /// @notice Every Final Wallet's public state. The source of truth other
    /// chains copy through `syncAccountState`.
    uint8 public constant TREE_ACCOUNTS = 1;
    /// @notice The PHI record, per `(wallet, chain)`: balances, the lock, its
    /// terms, the exposures carved from it and the accrual between reconciliations.
    uint8 public constant TREE_PHI = 2;
    /// @notice vAsset supply and backing.
    uint8 public constant TREE_VASSET = 3;
    /// @notice Oracle prices and their inputs.
    uint8 public constant TREE_ORACLE = 4;
    /// @notice Settlement chain and asset registry roots.
    uint8 public constant TREE_SETTLEMENT = 5;
    /// @notice Which assets and chains are supported.
    uint8 public constant TREE_ALLOWLIST = 6;
    /// @notice Intent status, keyed by a RING over the posting sequence.
    /// @dev The search structure beside `FinalBundleLog`'s permanent record.
    /// Written only by `FinalIntentLog` through `treeWriter[7]` — the tree-1
    /// argument verbatim: the log verified the bond, the commitment, the
    /// approval and the consume itself, and a service quorum on top would be a
    /// censorship point over posting. Slots are permanent and intents are
    /// unbounded flow, so the log recycles keys modulo `CAPACITY`: the tree is
    /// an index with a ~1M-posting retention window, never the record.
    uint8 public constant TREE_INTENTS = 7;
    /// @notice The wallet-creation admission set — the identity leaves
    /// (`keccak256(DOMAIN_IDENTITY_LEAF ‖ serial ‖ keysHash)`) every execution
    /// chain's gateway verifies certificates against.
    /// @dev The root the gateways anchor as `currentIdentityRoot`, CONTINUOUS
    /// over this tree: an admission or a revocation is live the moment it
    /// lands here, with no off-chain folding step standing between the two.
    /// Two feeders, one per identity plane, and NO quorum door for either:
    ///
    /// - SERVICE identities: {syncIdentityLeaves}, the permissionless
    ///   projection of `FinalIdentityRegistry`'s own verdict — the registry
    ///   calls it same-tx on every identity mutation, and anyone may call it
    ///   to retire a leaf whose standing lapsed by TIME (expiry moves no
    ///   registry storage, so only a projection pass can zero it).
    /// - USER identities: `treeWriter[8]` — `FinalAccountLedger`, which
    ///   computes the leaf from the genesis certificate fields it verified
    ///   under its opener quorum and writes it once at `openAccount`. A user
    ///   admission leaf is permanent by construction: the certificate IS the
    ///   address, rotation never changes it, and a post-rotation creation on
    ///   a new chain reads PUBLISHED account state out of tree 1, never the
    ///   certificate's genesis keys.
    ///
    /// A quorum of service signatures must not be able to state an identity
    /// neither ruler decided, so `setLeaves` refuses this tree outright.
    uint8 public constant TREE_IDENTITY = 8;
    /// @notice Count, for iteration. Trees are 1-indexed; 0 is not a tree.
    /// @notice Tree 9 — compliance: the approved set (branch 1), revocations (2), per-jurisdiction
    ///         counters (3) and minutes-lived action attestations (4); branch 0 pins the jurisdiction
    ///         policy in force and the attestation life. Typed-only: `FinalStateRecords` writes it under
    ///         the REGISTRAR quorum (an attestation is an admission) through `writeTypedInBranch`, and
    ///         the presale ledger mirrors its counters through the same companion; no `setLeaves` door
    ///         — no set of service signatures may attest what the provider and the screening did not
    ///         decide. Leaves are `FinalComplianceLeaves`; nothing in them names a person.
    uint8 public constant TREE_COMPLIANCE = 9;
    /// @notice Number of trees. The round root has room for 2**FOREST_BITS; a new tree is a redeploy.
    uint8 public constant TREE_COUNT = 9;

    /// @notice Tree height: 2^`DEPTH` slots per tree, laid out as 16 BRANCHES
    /// of 2^20. The top `BRANCH_BITS` of a slot name the branch, the rest its
    /// position inside it.
    /// @dev FIXED, and baked into every root this contract produces. A tree is
    /// padded to this height with the empty-subtree hash whether it holds one
    /// leaf or a million, which is why an off-chain rebuild must use this
    /// depth verbatim: a `log2(n)` tree over the same leaves is a different
    /// tree and proves nothing here. Raising it is a migration and not a
    /// parameter change — every outstanding proof and every root anchored on
    /// another chain would have to be replaced in the same instant.
    uint256 public constant DEPTH = 24;
    /// @notice How many of a slot's top bits name the branch it lives in.
    /// @dev `BRANCH_COUNT` is `1 << BRANCH_BITS` and `BRANCH_DEPTH` is
    /// `DEPTH - BRANCH_BITS`; the three move together, or the branch a slot
    /// belongs to stops matching the subtree its proof passes through.
    uint256 public constant BRANCH_BITS = 4;
    /// @notice Branches per tree. Ids run `0 .. BRANCH_COUNT - 1`.
    /// @dev Sixteen is deliberately generous: an unused branch costs only the
    /// empty-subtree hash it contributes, so a domain can grow a new family of
    /// rows without a new tree, a new writer or a new authority.
    uint8 public constant BRANCH_COUNT = 16;
    /// @notice Height of a branch: a leaf proves against its branch root with
    /// this many siblings.
    uint256 public constant BRANCH_DEPTH = DEPTH - BRANCH_BITS;
    /// @notice Slots per branch.
    /// @dev The hard ceiling `_set` enforces: a branch that runs out of slots
    /// reverts `BranchFull` rather than spilling into its neighbour, because a
    /// key in the wrong branch would prove against the wrong branch root.
    uint256 public constant BRANCH_CAPACITY = 1 << BRANCH_DEPTH;
    /// @notice Slots per tree, all branches together.
    uint256 public constant CAPACITY = 1 << DEPTH;
    /// @notice How many of the round root's levels sit above the tree roots.
    /// @dev The round root is a tree over the tree roots — position `t` holds
    /// tree `t`'s root, positions 0 and 9..15 the empty tree — folded with the
    /// same node hash. It is literally the root of a depth-`ROUND_DEPTH` tree
    /// whose level-`DEPTH` nodes are the eight tree roots, which is what lets
    /// one path prove a leaf against it.
    uint256 public constant FOREST_BITS = 4;
    /// @notice Height of the round tree: a leaf proves against a round root
    /// with this many siblings, the last `FOREST_BITS` of them from
    /// {roundProofFor}.
    uint256 public constant ROUND_DEPTH = DEPTH + FOREST_BITS;

    /// @notice Branch 0 of EVERY tree: the configuration of the service that
    /// owns the tree — key → one word, the VALUE stored so a contract on this
    /// chain reads it directly (`configValue`), the hash in the tree so it is
    /// provable wherever a round root is. Written only by {setConfig} under
    /// the configuration authority; every other door refuses the branch.
    uint8 public constant BRANCH_CONFIG = 0;
    /// @notice Branch 1 of every tree: the domain's own rows — accounts, PHI
    /// records, vAssets, prices, registry roots, the allowlist, the intent
    /// ring, the identity admission set.
    uint8 public constant BRANCH_MAIN = 1;
    /// @notice Tree 8, branch 2: the owner → wallets index. Key = the owner
    /// (`ownerIndexKeyFor`), leaf = {ownerIndexLeafHash} over the ledger's
    /// `walletsByOwner(owner)`. Written by tree 8's writer, the ledger, beside
    /// every open and every owner transfer — the tree is the search structure,
    /// the ledger holds the readable array it proves.
    uint8 public constant BRANCH_OWNER_INDEX = 2;
    /// @notice Tree 8, branch 3: the co-signers' per-slot KEM publics — a RING
    /// of `SLOT_KEY_RING` positions per member, projected from
    /// `slotKeySource` by {syncSlotKeyLeaves} exactly as identities are.
    uint8 public constant BRANCH_SLOT_KEYS = 3;
    /// @notice Tree 8, branch 4: the tunnel endpoints — the Final Node
    /// identities a wallet's FNP session terminates at. Key = the endpoint id
    /// (`endpointKeyFor`, the certificate's subject key id), leaf = the
    /// endpoint registry's verdict, projected from `endpointSource` by
    /// {syncEndpointLeaves} exactly as slot keys are. An execution chain never
    /// parses an endpoint certificate; it anchors this tree's root and a client
    /// proves the leaf against it.
    uint8 public constant BRANCH_ENDPOINTS = 4;
    /// @notice Slot-key positions per member. A slot index wraps modulo this,
    /// so the branch is an index over the recent slots and never fills; 1024
    /// members × 1024 positions is the branch exactly.
    uint64 public constant SLOT_KEY_RING = 1024;

    /// @notice The domain every tree-1 leaf is hashed under.
    /// @dev Must equal `FinalWalletFactory.DOMAIN_ACCOUNT_STATE_LEAF` byte for
    /// byte, and the leaf's fields must be encoded in the same order on both
    /// sides. A field reordered on one side only is not a compile error
    /// anywhere: it is a root every execution chain rejects, with nothing
    /// pointing at the cause.
    ///
    /// The version suffix is part of the domain, so a leaf built under a
    /// different account-state shape hashes into a different domain and cannot
    /// verify against this one by accident.
    bytes32 public constant DOMAIN_ACCOUNT_STATE_LEAF =
        keccak256("FINAL_ACCOUNT_STATE_LEAF_v03");

    /// @dev The quorum action every leaf write is approved under — {setLeaves},
    /// {setAccountStates} and {writeTyped} share it, so a member recomputes one
    /// digest whichever door a batch came through and there is no second
    /// approval shape to get wrong.
    bytes32 private constant ACTION_SET_LEAVES = keccak256("FinalStateTrees.setLeaves.v01");
    /// @notice Configuration action: set a tree's writer role and threshold.
    /// @dev Registrar-quorum actions, verified by the registry with this
    /// contract as the verifying contract. See `FinalIdentityRegistry.requireRegistrarQuorum`.
    bytes32 public constant ACTION_CONFIGURE_TREE = keccak256("FINAL_STATE_TREES_CONFIGURE_TREE_v01");
    /// @notice Configuration action: point a tree at its writer contract.
    bytes32 public constant ACTION_SET_TREE_WRITER = keccak256("FINAL_STATE_TREES_SET_TREE_WRITER_v01");
    /// @notice Configuration action: point `syncIdentities` at the chain set.
    bytes32 public constant ACTION_SET_CHAIN_SOURCE = keccak256("FINAL_STATE_TREES_SET_CHAIN_SOURCE_v01");
    /// @notice Configuration action: point tree 8's branch 3 at the slot-key registry.
    bytes32 public constant ACTION_SET_SLOT_KEY_SOURCE = keccak256("FINAL_STATE_TREES_SET_SLOT_KEY_SOURCE_v01");
    /// @notice Configuration action: point tree 8's branch 4 at the endpoint registry.
    bytes32 public constant ACTION_SET_ENDPOINT_SOURCE = keccak256("FINAL_STATE_TREES_SET_ENDPOINT_SOURCE_v01");
    /// @notice Configuration action: adopt a preceding plane's version and round counters.
    bytes32 public constant ACTION_SEED_COUNTERS = keccak256("FINAL_STATE_TREES_SEED_COUNTERS_v01");
    /// @notice Configuration action: install the records contract that writes the typed trees.
    bytes32 public constant ACTION_SET_TYPED_WRITER = keccak256("FINAL_STATE_TREES_SET_TYPED_WRITER_v01");
    /// @notice Configuration action: write rows into a tree's branch 0.
    bytes32 public constant ACTION_SET_CONFIG = keccak256("FINAL_STATE_TREES_SET_CONFIG_v01");

    /// @dev Tree-1 key domain. A full-width hash rather than the packed address
    /// it came from, which matters: an address key occupies only the low 160
    /// bits, so a hashed key colliding with one needs ~2^96 work rather than a
    /// full collision. That is expensive but not comfortable, and the
    /// consequence would be a service identity landing in a wallet's slot.
    bytes32 private constant DOMAIN_ACCOUNT_KEY = keccak256("FinalStateTrees.key.account.v01");
    /// @dev Tree-8 admission key domain, separated from the tree-1 domain for
    /// the same reason: one account's two keys must never be the same word.
    bytes32 private constant DOMAIN_IDENTITY_TREE_KEY = keccak256("FinalStateTrees.key.identity.v01");
    /// @dev Tree 8, branches 2 and 3, and branch 0 of every tree. Each is its
    ///      own domain so a key can never land in another branch's slot by
    ///      construction — `_set` refuses a key whose slot sits in a different
    ///      branch, and the domain is what makes that refusal unreachable.
    bytes32 private constant DOMAIN_OWNER_INDEX_KEY = keccak256("FinalStateTrees.key.ownerIndex.v01");
    /// @dev Tree 8, branch 3: one key per `(member, ring position)` pair.
    bytes32 private constant DOMAIN_SLOT_KEY = keccak256("FinalStateTrees.key.slotKey.v01");
    /// @dev Tree 8, branch 4: one key per tunnel endpoint id.
    bytes32 private constant DOMAIN_ENDPOINT_KEY = keccak256("FinalStateTrees.key.endpoint.v01");
    /// @dev Branch 0 of every tree: one key per `(name, sub)` configuration row.
    bytes32 private constant DOMAIN_CONFIG_KEY = keccak256("FinalStateTrees.key.config.v01");

    /// @notice Leaf domain for the owner index in tree 8, branch 2.
    /// @dev Separate from the key domain above so the leaf and the slot it
    /// occupies can never be confused for one another by a reader that has
    /// only one of the two.
    bytes32 public constant DOMAIN_OWNER_INDEX_LEAF = keccak256("FINAL_OWNER_INDEX_LEAF_v01");
    /// @notice Leaf domain for configuration rows in branch 0 of every tree.
    /// @dev The leaf binds the tree id as well as the key and value, so the
    /// same row written into two trees produces two different leaves and a
    /// proof cannot be carried from one tree's branch 0 to another's.
    bytes32 public constant DOMAIN_CONFIG_LEAF = keccak256("FINAL_CONFIG_LEAF_v01");

    // -------------------------------------------------------------- storage

    /// @notice The registry every signer is resolved through. Immutable so the
    /// quorum can never be pointed at a registry supplied in calldata.
    FinalIdentityRegistry public immutable registry;

    /// @notice Approvals required per tree.
    ///
    /// @dev Per-tree and not a scalar, because each tree is gated by a
    ///      DIFFERENT role — account co-signers, PHI, vAsset and oracle
    ///      publishers, registry publishers — so K is a property of that
    ///      tree's roster, not of the contract. All six read 2 today; that is
    ///      a deploy-time default, not an invariant, and collapsing them would
    ///      put the oracle roster's quorum on the account co-signers'.
    ///
    ///      The VALUE is a full word: it is a quantity compared against a live
    ///      member count, and every other threshold in the system is `uint256`.
    ///      The KEY is `uint8` because that is what a tree id is here — six
    ///      `uint8` constants, every parameter, every event, every error,
    ///      `_assertTree`, and the ten sibling mappings below. Widening it
    ///      would buy nothing (a narrow key is padded to 32 bytes before
    ///      hashing, so the slot is identical) and cost the getter's selector
    ///      on a contract that is live on both Final Chains.
    mapping(uint8 treeId => uint256) public threshold;
    /// @notice Role a signer must hold to write to a tree.
    mapping(uint8 treeId => uint256) public writerRole;

    /// @notice Raw (untagged) leaf value by tree and slot.
    /// @dev The tag is applied when the leaf is hashed, never when it is
    ///      stored, so what a caller wrote is what {leafOf} hands back.
    mapping(uint8 => mapping(uint256 => bytes32)) private _leaf;
    /// @notice Internal nodes, levels 1..`DEPTH`, by tree, level and index.
    /// @dev Level 0 is DERIVED from `_leaf` rather than duplicated here, so a
    ///      leaf lives in exactly one place and the two can never disagree. An
    ///      unwritten position reads zero and falls through to `_zero[level]`.
    mapping(uint8 => mapping(uint256 => mapping(uint256 => bytes32))) private _node;
    /// @notice Empty-subtree hash per level, computed once at construction.
    /// @dev Sized to the ROUND root's height, not the tree's, because the
    ///      round tree's unused positions are themselves empty trees. Built in
    ///      the constructor rather than declared as constants: it depends on
    ///      the tagging, and a constant table that drifted from the tagging
    ///      would produce roots nothing can verify, silently, since both sides
    ///      would still be internally consistent.
    bytes32[ROUND_DEPTH + 1] private _zero;

    /// @notice Permanent slot for a key, stored 1-based so 0 means unassigned.
    /// @dev The slot's top `BRANCH_BITS` are the branch the key lives in, and
    ///      the assignment is permanent: a key handed a slot keeps it for the
    ///      life of the contract. This is what makes an update `DEPTH` hashes
    ///      rather than a rebuild, and what makes the tree insertion-ordered.
    mapping(uint8 => mapping(bytes32 => uint256)) private _slotPlusOne;
    /// @notice The key a slot was handed to — the reverse of `_slotPlusOne`.
    /// @dev Lets any branch enumerate on chain ({keyAt} over
    ///      `0 .. branchSlotsUsed`) with no log window and no indexer. Costs
    ///      one extra word per NEW key, never one per update.
    mapping(uint8 => mapping(uint256 => bytes32)) private _keyAt;
    /// @notice Slots handed out per tree, all branches together.
    mapping(uint8 => uint256) public slotsUsed;
    /// @notice Slots handed out per branch — the next free position in it.
    /// @dev Per branch and not per tree, because a branch is a fixed region of
    ///      the slot space: positions are allocated from the branch's own base
    ///      so a key can never be handed a slot outside the branch it belongs
    ///      to, and `BranchFull` is raised rather than spilling into the next.
    mapping(uint8 => mapping(uint8 => uint256)) private _branchSlotsUsed;
    /// @notice The VALUE behind a configuration row (branch 0), by tree and key.
    /// @dev Kept beside the leaf hash so a contract on this chain reads the row
    ///      directly through {configValue} while the same row stays provable
    ///      off chain against a round root — one source for the fleet, the
    ///      contracts and any explorer, rather than one per reader.
    mapping(uint8 => mapping(bytes32 => bytes32)) private _configValue;

    /// @notice Live root per tree. Moves on every `setLeaves`.
    mapping(uint8 treeId => bytes32) public liveRoot;
    /// @notice Writes applied per tree, for change detection between rounds.
    mapping(uint8 treeId => uint64) public treeVersion;

    /// @notice A contemporaneous snapshot of all eight roots, and the one
    /// round root that folds them.
    struct Round {
        /// @dev Live root per tree at the instant of the snapshot, indexed by
        ///      the `TREE_*` constants. Index 0 is unused, so a tree id needs
        ///      no translation.
        bytes32[TREE_COUNT + 1] roots;
        /// @dev The single word committing to all eight — the roots folded as
        ///      the level-`DEPTH` nodes of a depth-`ROUND_DEPTH` tree.
        bytes32 roundRoot;
        /// @dev Block the snapshot was taken in, for a consumer reconciling a
        ///      round against chain history.
        uint64 blockNumber;
        /// @dev Snapshot instant in MILLISECONDS, like every instant on this
        ///      chain, so a reader never has to guess the unit.
        uint64 timestamp;
    }

    /// @notice Published rounds, 1-indexed. Round 0 is "nothing published".
    /// @dev Kept forever: a consumer pinning an old round can still fetch the
    ///      roots it verified against. Only rounds this deployment published
    ///      are here — {seedCounters} moves the counter, never the history.
    mapping(uint64 => Round) private _rounds;
    /// @notice Highest published round.
    uint64 public round;
    /// @notice Tree versions as of the last published round.
    /// @dev The change detector {publishRound} reads: a round that would carry
    ///      nothing new is refused, so the round number cannot be advanced by
    ///      anyone with gas to spend.
    mapping(uint8 => uint64) private _publishedVersion;

    /// @notice Per-tree nonce, bound into every quorum digest.
    mapping(uint8 treeId => uint64) public nonce;

    /**
     * @notice A CONTRACT allowed to write one tree without a quorum.
     *
     * @dev Exactly one per tree, and today exactly one exists: tree 1's is
     * `FinalAccountLedger`.
     *
     * This looks like a hole and is the opposite. The quorum on `setLeaves`
     * exists because a tree's writer is otherwise one key deciding what the
     * chain states. A writer contract is not a key — its rules are its
     * bytecode, it has no owner and no proxy, and tree 1's writer authorizes
     * every change by verifying the ACCOUNT HOLDER'S own post-quantum signature
     * in this chain's precompiles. That is strictly stronger evidence than a
     * K-of-N of our own services attesting to what they read.
     *
     * Keeping the quorum on top of it would be actively worse: our fleet could
     * then withhold approval from a user rotating a stolen key, which is a
     * censorship power over the exact operation the account plane exists to
     * make possible.
     *
     * The writer is set on the same bootstrap window as `configureTree` and can
     * be moved by a registrar afterwards — an immutable pointer would mean a
     * ledger upgrade abandons the tree it writes.
     */
    mapping(uint8 treeId => address) public treeWriter;

    /**
     * @notice Where `syncIdentities` reads the chain set from — the asset
     *         registry, which is also tree 6's writer.
     *
     * @dev A service identity is a Final Wallet whose address is the same on
     * every EVM chain, so its tree-1 `deployedChains` table is derivable: one
     * `(chainRef, itself)` row per chain the registry has enabled. The table
     * is DERIVED from state rather than supplied by the caller precisely so
     * that `syncIdentities` can stay permissionless — a caller-chosen table
     * would let anyone place a service identity on a chain of their choosing.
     *
     * Unset (zero) means services carry an empty table and exist on Final
     * Chain alone, which is what a plane looks like before its registry is
     * seeded. Same configuration gate as `setTreeWriter`, because pointing this
     * at a different contract changes what every service leaf says.
     */
    address public chainSource;
    /// @notice Where {syncSlotKeyLeaves} reads the co-signers' slot keys from
    ///         — the slot-key registry, whose verdict tree 8's branch 3
    ///         projects. Same configuration gate as `chainSource`; unset means
    ///         the branch cannot be written.
    address public slotKeySource;
    /// @notice The endpoint registry whose verdict tree 8's branch 4 projects.
    address public endpointSource;
    /// @notice The one contract admitted to {writeTyped}: `FinalStateRecords`,
    ///         which holds the preimages behind trees 2, 3 and 4 and computes
    ///         their keys and hashes. Same configuration gate as `treeWriter`.
    address public typedWriter;

    // --------------------------------------------------------------- events

    /// @notice A batch of leaves landed in a tree and moved its live root.
    /// @dev Emitted once per write door call, not once per leaf, and always
    ///      after the root has settled — so `newRoot` is the value {liveRoot}
    ///      answers from that block onward.
    /// @param treeId The tree that moved.
    /// @param count Leaves in the batch. Zero is possible for an empty call.
    /// @param newRoot The tree's live root after the batch.
    /// @param treeVersion The tree's write counter after the batch.
    event LeavesSet(uint8 indexed treeId, uint256 count, bytes32 newRoot, uint64 treeVersion);
    /// @notice Every tree's root was snapshotted into a new round.
    /// @param round The round number, one above its predecessor.
    /// @param blockNumber Block the snapshot was taken in.
    /// @param timestamp Snapshot instant, in milliseconds.
    event RoundPublished(uint64 indexed round, uint64 blockNumber, uint64 timestamp);
    /// @notice A tree's writer role and approval threshold were installed.
    /// @param treeId The tree configured.
    /// @param writerRole Role a signer must hold to approve a write to it.
    /// @param threshold Approvals a write needs; zero leaves the tree closed.
    event TreeConfigured(uint8 indexed treeId, uint256 writerRole, uint256 threshold);
    /// @notice A tree's quorum-free writer contract was installed or moved.
    /// @param treeId The tree whose writer changed.
    /// @param writer The contract now allowed to write it; zero removes the path.
    event TreeWriterSet(uint8 indexed treeId, address writer);
    /// @notice The contract `syncIdentities` reads the enabled chain set from was set.
    /// @param source The asset registry now consulted; zero means no chain set.
    event ChainSourceSet(address source);
    /// @notice The registry tree 8's branch 3 projects slot keys from was set.
    /// @param source The slot-key registry now consulted; zero closes the branch.
    event SlotKeySourceSet(address source);
    /// @notice The registry tree 8's branch 4 projects endpoints from was set.
    /// @param source The endpoint registry now consulted; zero closes the branch.
    event EndpointSourceSet(address source);
    /// @notice A fresh plane adopted a preceding plane's counters.
    /// @dev Carries the counters only. The roots behind those rounds stay with
    ///      the plane that published them, so {roundRootAt} below the seed
    ///      answers zero on this one.
    /// @param round The round number this plane continues from.
    /// @param versions Per-tree write counters, indexed by tree id; index 0 unused.
    event CountersSeeded(uint64 round, uint64[] versions);
    /// @notice The records contract admitted to the typed trees was installed.
    /// @param writer The contract now allowed through {writeTyped}.
    event TypedWriterSet(address writer);
    /// @notice One configuration row was written into a tree's branch 0.
    /// @param treeId The tree whose owning service the row configures.
    /// @param key The row's branch-0 key, as {configKey} computes it.
    /// @param value The row's single word of value.
    event ConfigSet(uint8 indexed treeId, bytes32 indexed key, bytes32 value);

    // --------------------------------------------------------------- errors

    /// @notice A tree id outside `1 .. TREE_COUNT` was supplied. Zero is not a tree.
    /// @param treeId The rejected id.
    error UnknownTree(uint8 treeId);
    /// @notice Two parallel arrays did not have the same length, or a batch was empty
    ///         where at least one row is required.
    /// @param keys Length of the key array.
    /// @param leaves Length of the value array.
    error LengthMismatch(uint256 keys, uint256 leaves);
    /// @notice A branch has handed out every slot it owns and cannot take a new key.
    /// @dev Raised rather than spilling into the neighbouring branch: a key in
    ///      the wrong branch would prove against the wrong branch root.
    /// @param treeId The tree the branch belongs to.
    /// @param branch The exhausted branch.
    error BranchFull(uint8 treeId, uint8 branch);
    /// @notice A branch id at or above `BRANCH_COUNT` was supplied.
    /// @param branch The rejected id.
    error UnknownBranch(uint8 branch);
    /// @notice A key already holds a slot in another branch of this tree.
    /// @dev Slots are permanent, so a key cannot be moved between branches.
    ///      Reaching this means two callers disagree about where a row lives.
    /// @param treeId The tree involved.
    /// @param key The key whose slot is already assigned.
    /// @param have The branch the key's slot actually sits in.
    /// @param want The branch the caller tried to write it into.
    error BranchMismatch(uint8 treeId, bytes32 key, uint8 have, uint8 want);
    /// @notice Branch 0 is written by `setConfig` alone.
    /// @dev Every other door refuses it, so a tree's writer or quorum can never
    ///      restate the configuration of the service that feeds it.
    /// @param treeId The tree whose branch 0 was targeted.
    error ConfigBranchReserved(uint8 treeId);
    /// @notice Tree 8's branch 3 was written while no slot-key registry is installed.
    error SlotKeySourceUnset();
    /// @notice Tree 8's branch 4 was written while no endpoint registry is installed.
    error EndpointSourceUnset();
    /// @notice Counters can be seeded only into a plane that has published nothing.
    /// @dev Seeding a plane that already moved would rewind counters consumers
    ///      have compared against, so it is refused rather than reconciled.
    error NotFresh();
    /// @notice The seeded version array was not one entry per tree plus the unused index 0.
    /// @param given The length supplied.
    error VersionCountMismatch(uint256 given);
    /// @notice The tree has no threshold installed, so no quorum write can be authorized.
    /// @param treeId The unconfigured tree.
    error TreeNotConfigured(uint8 treeId);
    /// @notice A round was requested while no tree has moved since the last one.
    /// @dev The round number is therefore not advanceable by anyone with gas
    ///      to spend, and a round always means something changed.
    error NothingToPublish();
    /// @notice The key holds no slot in this tree, so there is nothing to prove or read.
    /// @param treeId The tree searched.
    /// @param key The key with no slot.
    error UnknownKey(uint8 treeId, bytes32 key);
    /// @notice The caller is not the writer seat or typed writer this door requires.
    /// @param caller The rejected address.
    error NotAuthorized(address caller);
    /// @notice A round was asked for on a plane that has published none, or one above the latest.
    error NoRounds();
    /// @notice A threshold was configured above the number of members who could meet it.
    /// @dev Refused at configuration time so a tree is never installed already
    ///      unwritable. Register the roster first; that ordering is the point.
    ///      Revocation can still walk a live tree into this state later, which
    ///      is what {quorumHealth} exists for — revocation must never be
    ///      blocked on quorum arithmetic.
    /// @param treeId The tree being configured.
    /// @param live Members currently holding the role.
    /// @param required Approvals the rejected configuration would demand.
    error ThresholdUnreachable(uint8 treeId, uint256 live, uint256 required);
    /// @notice Trees 7 and 8 take no quorum writes — only their writer
    /// contract (and, for tree 8, the registry projection).
    /// @dev An intent's status is what the intent log verified and an identity
    ///      is what the registry or the ledger verified. No set of service
    ///      signatures can make a different answer true, so there is no quorum
    ///      door to refuse at — the door does not exist.
    /// @param treeId The writer-only tree a quorum write was aimed at.
    error WriterOnlyTree(uint8 treeId);
    /// @notice `setLeaves` was called on a tree that has a typed writer.
    /// @dev Trees 2, 3 and 4 keep the leaf's preimage beside its hash so a
    ///      consumer can read the VALUE. An untyped write sets the hash and
    ///      cannot set the preimage — the pair would disagree, and the stored
    ///      value would look authoritative while committing to nothing. The
    ///      typed entrypoint is not a convenience over this one; it is the
    ///      only door.
    /// @param treeId The typed tree an untyped write was aimed at.
    error TypedTreeOnly(uint8 treeId);
    /// @notice A `deployedChains` row names the zero chain or the zero account,
    ///         or repeats a chain. A table with either proves nothing about
    ///         where the account exists.
    /// @dev Checked wherever the leaf is hashed, so no door — quorum, writer
    ///      contract, identity projection — can publish a table a resolver on
    ///      another chain would read two ways.
    /// @param chainRef The offending row's chain reference.
    /// @param account The offending row's account on that chain.
    error InvalidChainAccount(bytes32 chainRef, bytes32 account);

    // ---------------------------------------------------------- constructor

    /**
     * @notice Pin the identity registry and bring all eight trees up empty.
     * @param registry_ The identity registry. Every signer, key and role is
     *        resolved through it.
     * @dev The registry is `immutable`, so no later call can point the quorum
     * at a registry supplied in calldata — a roster chosen by the caller is a
     * roster that approves whatever the caller wants.
     *
     * The empty-subtree table is built here rather than as constants because it
     * depends on the tagging, and a constant table that drifted from the
     * tagging would produce roots nothing can verify — silently, since both
     * sides would still be self-consistent.
     *
     * Every tree starts at the empty root rather than zero, so a consumer can
     * tell "this tree holds nothing" from "this contract has never run".
     */
    constructor(FinalIdentityRegistry registry_) {
        registry = registry_;
        _setUp();
    }

    /**
     * @notice The constructor's storage writes, for a deployment behind `FinalChainProxy`: the proxy's
     *         constructor runs this once in the proxy's storage. Reverts `AlreadyInitialized` on a direct
     *         deploy (its constructor ran it) and on a second call.
     */
    function initialize() external {
        _setUp();
    }

    /// @dev The empty-subtree ladder and every tree's empty root — storage, so a proxy needs it replayed.
    function _setUp() internal initializer {
        // Level 0: the tagged hash of an empty (zero) leaf.
        _zero[0] = keccak256(abi.encodePacked(bytes1(0x00), bytes32(0)));
        for (uint256 l = 0; l < ROUND_DEPTH; l++) {
            // Both children equal, so the sort is a no-op and the order is
            // irrelevant — which is the only reason this table is one value per
            // level rather than one per position.
            _zero[l + 1] = keccak256(abi.encodePacked(bytes1(0x01), _zero[l], _zero[l]));
        }

        for (uint8 t = 1; t <= TREE_COUNT; t++) {
            liveRoot[t] = _zero[DEPTH];
        }
    }

    // ------------------------------------------------------- configuration

    /**
     * @notice The gate every configuration entrypoint on this contract passes through.
     * @dev The registry's bootstrap admin alone while its window is open, the
     * sealed `ROLE_REGISTRAR` quorum afterwards. The same window the registry
     * uses, for the same reason — every roster has to be installed by someone
     * before it can install itself — and the same quorum, because a threshold
     * is membership by another name: whoever can set K to one owns the tree.
     *
     * Not `view`: the registrar path burns the registry's own nonce, so an
     * approved configuration payload cannot be replayed at a later block.
     * @param actionDomain The `ACTION_*` constant naming what is being configured.
     * @param payloadDigest Hash of the arguments this call would apply.
     * @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
     * @param approvals The sealed registrar quorum. Empty during bootstrap.
     */
    function _requireConfigurationAuthority(
        bytes32 actionDomain,
        bytes32 payloadDigest,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) private {
        if (!registry.bootstrapSealed() && msg.sender == registry.bootstrapAdmin()) return;
        registry.requireRegistrarQuorum(actionDomain, payloadDigest, anchorBlock, approvals);
    }

    /**
     * @notice Set which role may write a tree and how many approvals it needs.
     * @dev The configuration authority, never the tree's own quorum: a roster
     * that could raise or lower its own threshold is a roster with no
     * threshold. A tree left at `k == 0` refuses every quorum write with
     * `TreeNotConfigured`, which is the state a fresh plane starts in.
     * @param treeId The tree being configured.
     * @param role Role a signer must hold for an approval to count.
     * @param k Approvals a write needs; `0` leaves the tree unconfigured.
     * @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
     * @param approvals The sealed registrar quorum. Empty during bootstrap.
     */
    function configureTree(
        uint8 treeId,
        uint256 role,
        uint256 k,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _assertTree(treeId);
        _requireConfigurationAuthority(
            ACTION_CONFIGURE_TREE, keccak256(abi.encode(treeId, role, k)), anchorBlock, approvals
        );
        // Refuse a threshold nobody can meet. Register the members first; that
        // ordering is the point, not an inconvenience. A 4-of-5 configured
        // against three registered co-signers is a tree that reverts on every
        // write, and the revert names the threshold rather than the roster.
        if (k != 0) {
            uint256 live = registry.liveMemberCount(role);
            if (live < k) revert ThresholdUnreachable(treeId, live, k);
        }
        writerRole[treeId] = role;
        threshold[treeId] = k;
        emit TreeConfigured(treeId, role, k);
    }

    /**
     * @notice Point a tree at the contract allowed to write it directly.
     * @dev Same gate as `configureTree`, for the same reason. Setting it to the
     * zero address removes the path entirely and leaves the tree quorum-only.
     *
     * Point this at a CONTRACT, never at an externally owned account. The whole
     * argument for a quorum-free writer is that its rules are its bytecode; an
     * account holding a key is exactly the single-key authority the quorum on
     * {setLeaves} exists to prevent.
     *
     * Movable rather than immutable on purpose: an immutable pointer would mean
     * a ledger redeploy abandons the tree it writes, with no way back.
     * @param treeId The tree whose writer seat is being set.
     * @param writer The contract admitted to it; zero removes the seat.
     * @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
     * @param approvals The sealed registrar quorum. Empty during bootstrap.
     */
    function setTreeWriter(
        uint8 treeId,
        address writer,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _assertTree(treeId);
        _requireConfigurationAuthority(
            ACTION_SET_TREE_WRITER, keccak256(abi.encode(treeId, writer)), anchorBlock, approvals
        );
        treeWriter[treeId] = writer;
        emit TreeWriterSet(treeId, writer);
    }

    /**
     * @notice Point `syncIdentities` at the contract that knows the chain set.
     * @dev Same gate as `setTreeWriter`. Zero removes the source, after which
     * service leaves carry an empty `deployedChains` table — which is what a
     * plane looks like before its asset registry is seeded, and is why this
     * pointer belongs in the same bootstrap window as the seed itself.
     * @param source The asset registry to read the enabled chain set from.
     * @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
     * @param approvals The sealed registrar quorum. Empty during bootstrap.
     */
    function setChainSource(
        address source,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireConfigurationAuthority(
            ACTION_SET_CHAIN_SOURCE, keccak256(abi.encode(source)), anchorBlock, approvals
        );
        chainSource = source;
        emit ChainSourceSet(source);
    }

    /// @notice Point tree 8's branch 3 at the slot-key registry it projects.
    /// @dev Same gate as `setChainSource`. Zero closes the branch entirely:
    ///      {syncSlotKeyLeaves} reverts `SlotKeySourceUnset` rather than
    ///      writing leaves whose value nothing vouched for.
    /// @param source The slot-key registry whose verdict the branch projects.
    /// @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
    /// @param approvals The sealed registrar quorum. Empty during bootstrap.
    function setSlotKeySource(
        address source,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireConfigurationAuthority(
            ACTION_SET_SLOT_KEY_SOURCE, keccak256(abi.encode(source)), anchorBlock, approvals
        );
        slotKeySource = source;
        emit SlotKeySourceSet(source);
    }

    /// @notice Point tree 8's branch 4 at the endpoint registry it projects.
    /// @dev Same gate as `setSlotKeySource`, and the same fail-closed shape:
    ///      zero makes {syncEndpointLeaves} revert `EndpointSourceUnset`.
    /// @param source The endpoint registry whose verdict the branch projects.
    /// @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
    /// @param approvals The sealed registrar quorum. Empty during bootstrap.
    function setEndpointSource(
        address source,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireConfigurationAuthority(
            ACTION_SET_ENDPOINT_SOURCE, keccak256(abi.encode(source)), anchorBlock, approvals
        );
        endpointSource = source;
        emit EndpointSourceSet(source);
    }

    /**
     * @notice Adopt a preceding plane's counters — one `treeVersion` per tree
     *         (index = treeId, 0 unused) and the published `round` — so a
     *         redeploy stays monotonic for every consumer that compares them:
     *         rings, explorers, the round feed.
     * @dev This contract is immutable, so replacing it means a new address, and
     * a fresh address would otherwise restart every counter at zero. A consumer
     * that treats a counter as monotonic would then read the new plane as
     * older than the state it already holds, and quietly ignore live data.
     *
     * It carries the counters and nothing else. The roots behind those rounds
     * stay with the plane that published them, so {roundRootAt} below the seed
     * answers zero here — pin a round on the plane that produced it.
     *
     * Configuration authority (bootstrap admin before the seal, registrar
     * quorum after), and only while this plane has published nothing:
     * `NotFresh` otherwise, because rewinding a counter a consumer has already
     * compared against is worse than never seeding at all.
     * @param versions Per-tree write counters to adopt, indexed by tree id;
     *        index 0 is unused and must still be present.
     * @param round_ The round number this plane continues from.
     * @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
     * @param approvals The sealed registrar quorum. Empty during bootstrap.
     */
    function seedCounters(
        uint64[] calldata versions,
        uint64 round_,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireConfigurationAuthority(
            ACTION_SEED_COUNTERS, keccak256(abi.encode(versions, round_)), anchorBlock, approvals
        );
        if (versions.length != TREE_COUNT + 1) revert VersionCountMismatch(versions.length);
        if (round != 0) revert NotFresh();
        for (uint8 t = 1; t <= TREE_COUNT; t++) {
            if (treeVersion[t] != 0) revert NotFresh();
        }
        for (uint8 t = 1; t <= TREE_COUNT; t++) {
            treeVersion[t] = versions[t];
        }
        round = round_;
        emit CountersSeeded(round_, versions);
    }

    /// @notice Install the records contract that writes the typed trees.
    /// @dev Trees 2, 3 and 4 have no other door at all — {setLeaves} refuses
    ///      them outright — so leaving this unset closes those three
    ///      completely. Same gate as `setTreeWriter`, and the same rule: a
    ///      contract, never an account holding a key.
    /// @param writer The records contract admitted to {writeTyped}.
    /// @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
    /// @param approvals The sealed registrar quorum. Empty during bootstrap.
    function setTypedWriter(
        address writer,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _requireConfigurationAuthority(
            ACTION_SET_TYPED_WRITER, keccak256(abi.encode(writer)), anchorBlock, approvals
        );
        typedWriter = writer;
        emit TypedWriterSet(writer);
    }

    /**
     * @notice Write configuration rows into a tree's branch 0.
     * @param treeId The tree whose owning service the rows configure.
     * @param keys `configKey(name, sub)` per row.
     * @param values One word per row — a duration, a count, an address, a
     *        flag; the reader knows the shape from the name.
     * @param anchorBlock The registrars' roster anchor. Ignored during bootstrap.
     * @param approvals The sealed registrar quorum. Empty during bootstrap.
     *
     * @dev The configuration authority, not the tree's writer or quorum: a
     * tree's writer states what its domain verified, its quorum attests to
     * what it read, and neither is the authority over how the service that
     * feeds it is configured.
     *
     * The value is stored beside the hash so a contract on this chain reads it
     * in one call ({configValue}) while the same row is provable off chain
     * against a round root. That is one source of truth for the fleet, the
     * contracts and any explorer at once — a service reading its own
     * environment instead would be a second source, free to disagree with this
     * one and with nothing on chain able to notice.
     */
    function setConfig(
        uint8 treeId,
        bytes32[] calldata keys,
        bytes32[] calldata values,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _assertTree(treeId);
        if (keys.length != values.length || keys.length == 0) revert LengthMismatch(keys.length, values.length);
        _requireConfigurationAuthority(
            ACTION_SET_CONFIG, keccak256(abi.encode(treeId, keys, values)), anchorBlock, approvals
        );
        for (uint256 i = 0; i < keys.length; i++) {
            _configValue[treeId][keys[i]] = values[i];
            _set(treeId, BRANCH_CONFIG, keys[i], configLeafHash(treeId, keys[i], values[i]));
            emit ConfigSet(treeId, keys[i], values[i]);
        }
        _bump(treeId, keys.length);
    }

    // ------------------------------------------------------------- writing

    /**
     * @notice Write leaves into one branch of one tree under a PQ quorum.
     * @param treeId Which tree.
     * @param branch Which branch — never 0, which `setConfig` alone writes.
     * @param keys Domain keys — a wallet address for accounts, an asset id for
     *        the allowlist, whatever identifies a row in that domain. Each gets
     *        a permanent slot in the branch on first write.
     * @param leaves The raw (untagged) leaf values.
     * @param anchorBlock The block the approving roster is read as of.
     * @param approvals At least `threshold[treeId]` of them, ascending by signer.
     *
     * @dev The digest binds the tree, its nonce, and the full batch. Binding the
     * nonce is what stops the same approved batch being replayed: without it,
     * an approval to set a price is an approval to set that price again at any
     * later block, which for an oracle is the whole attack.
     *
     * ML-DSA-87 is required rather than accepted. These are operational,
     * high-cadence writes — the transaction class — and leaving the choice open
     * would mean a break in either scheme takes the tree.
     *
     * Three tree classes are refused here outright, each with its own error:
     * the typed trees (2, 3 and 4) because their preimage has to be built by
     * the records contract, and the writer-only trees (7 and 8) because no set
     * of service signatures can make a different answer true about an intent's
     * status or an identity's standing.
     */
    function setLeaves(
        uint8 treeId,
        uint8 branch,
        bytes32[] calldata keys,
        bytes32[] calldata leaves,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        _assertTree(treeId);
        _assertDataBranch(treeId, branch);
        if (treeId == TREE_PHI || treeId == TREE_VASSET || treeId == TREE_ORACLE || treeId == TREE_COMPLIANCE) {
            revert TypedTreeOnly(treeId);
        }
        // Trees 7 and 8 have their own rulers and NO quorum path at all: an
        // intent's status is what `FinalIntentLog` verified, an identity is
        // what the registry or the ledger verified, and no set of service
        // signatures can make a different answer true.
        if (treeId == TREE_INTENTS || treeId == TREE_IDENTITY) revert WriterOnlyTree(treeId);
        if (keys.length != leaves.length) revert LengthMismatch(keys.length, leaves.length);
        uint256 k = threshold[treeId];
        if (k == 0) revert TreeNotConfigured(treeId);

        uint64 n = nonce[treeId];
        FinalPqQuorum.require_(
            registry,
            approvals,
            FinalPqQuorum.digest(
                address(this),
                ACTION_SET_LEAVES,
                anchorBlock,
                keccak256(abi.encode(treeId, branch, n, keys, leaves))
            ),
            writerRole[treeId],
            k,
            FinalPqQuorum.ALG_ML_DSA_87,
            anchorBlock,
            false
        );
        nonce[treeId] = n + 1;

        for (uint256 i = 0; i < keys.length; i++) {
            _set(treeId, branch, keys[i], leaves[i]);
        }

        _bump(treeId, keys.length);
    }

    /// @notice One chain an account exists on, and as what.
    /// @dev `chainRef` is the registry's CAIP-derived chain reference — the one
    ///      identifier that names an EVM chain and a non-EVM one alike — and
    ///      `account` is the wallet's account there, in that chain's own account
    ///      space (an EVM address right-aligned, a 32-byte key filling the
    ///      width). Field-for-field with `IWalletTypes.ChainAccount`.
    struct ChainAccount {
        /// @dev The registry's CAIP-derived reference for the chain.
        bytes32 chainRef;
        /// @dev The account on that chain, in that chain's own account space.
        bytes32 account;
    }

    /// @notice `FinalWalletFactory.AccountStateLeaf`, field for field.
    /// @dev The preimage of every tree-1 leaf. The field set, the field ORDER
    ///      and the domain must match the factory's exactly on every supported
    ///      chain; a field added, removed or reordered on one side alone is a
    ///      root every execution chain rejects with nothing naming the cause.
    struct AccountStateLeaf {
        /// @dev The Final Wallet this leaf describes. Also what `accountKeyFor`
        ///      hashes into the tree-1 key, so one wallet holds one slot.
        address wallet;
        /// @dev Active-stage access-key commitment — the credential the account
        ///      ledger checks a state transition against.
        bytes32 liveAccess;
        /// @dev Active-stage transaction-key commitment.
        bytes32 liveTransaction;
        /// @dev Pre-committed successor to `liveAccess`, so a rotation reveals a
        ///      key that was already committed rather than one chosen after.
        bytes32 recoveryAccess;
        /// @dev Pre-committed successor to `liveTransaction`.
        bytes32 recoveryTransaction;
        /// @dev Active-stage encapsulation commitment and its pre-committed
        /// successor. Field-for-field with `FinalWalletFactory.AccountStateLeaf`;
        /// a field added on one side and not the other is a root every execution
        /// chain rejects, with nothing pointing at the cause.
        bytes32 liveKem;
        /// @dev Pre-committed successor to `liveKem`.
        bytes32 recoveryKem;
        /// @dev Who may authorize for this account. This is the PROVEN owner an
        ///      execution chain resolves authority from; a copy stored there is
        ///      wrong for as long as nobody has pushed to that chain, and
        ///      nothing there can tell.
        address owner;
        /// @dev Whether the account authorizes post-quantum. One-way once set.
        bool pqEnabled;
        /// @dev Whether the account is frozen. Returned to a resolver rather
        ///      than enforced by it, so a reader can still learn who owns a
        ///      frozen account; the wallet refuses on this PROVEN value rather
        ///      than on a synced copy, so a chain behind on the fan-out cannot
        ///      let a frozen account transact.
        bool frozen;
        /// @dev The chains this account exists on, and its account on each —
        /// including chains whose accounts are not EVM addresses. Decided HERE
        /// (set by the holder through the ledger) and enforced there: an
        /// execution chain refuses to create the account unless the table has a
        /// row for it, and a settlement toward a chain with no row is refused at
        /// the source. This is also what a zero beneficiary resolves through: a
        /// table naming the account on each chain answers "as what", which a
        /// bare membership flag never could. `_assertChainAccounts` rejects a
        /// zero chain, a zero account and a repeated chain, so no door can
        /// publish a table a resolver would read two ways.
        ChainAccount[] deployedChains;
        /// @dev Per-chain dormancy verdict, one bit per asset-registry chain
        /// slot, so the bit positions are the registry's slot numbering rather
        /// than this table's row order.
        uint32 dormantChains;
        /// @dev Commitment to the recovery credential the account enrols at creation
        ///      (`keccak256(abi.encode(FINAL_RECOVERY_ENROLMENT_v01, validator, keccak256(registrationData)))`);
        ///      zero = none. Declared through the ledger, bound here so creation cannot be front-run with another
        ///      credential. Field-for-field with `FinalWalletFactory.AccountStateLeaf`.
        bytes32 recoveryCredential;
        /// @dev Which `deployedChains` ROWS are created with that credential enrolled: bit i is row i (not the
        ///      registry slot `dormantChains` uses). A set bit needs a non-zero `recoveryCredential`.
        uint32 guardedChains;
        /// @dev Monotonic per-account revision. Lets a reader holding two
        ///      proofs tell which one is newer without consulting a round.
        uint64 version;
    }

    /**
     * @notice Write account state into tree 1 from the typed leaf.
     * @dev The typed form exists so the leaf preimage is built HERE rather than
     * by whoever assembles the calldata. Tree 1 is the source of truth for every
     * other chain, and `syncAccountState` will accept any 32 bytes that carry a
     * valid proof — so if the publisher chose the preimage, the publisher could
     * write an account state that no wallet record on this chain agrees with,
     * and the proof would still verify everywhere.
     *
     * The round takes the ML-DSA-87 vote alone, as every tree write does (the
     * user's ruling of 12 Sep 2026, arch/quorum-signing-ml-dsa.md). Who an
     * account IS is decided by the holder's own SLH-DSA credential in
     * `FinalAccountLedger` — the ledger is `treeWriter[1]` and writes tree 1
     * with no service quorum at all — so a quorum round here re-publishes state
     * the holder already authorized; it is the roster's membership, not the
     * account's, that keeps the SLH-DSA seal (the registrar quorum).
     * @param leaves The account states to write, one per wallet.
     * @param anchorBlock The block the approving roster is read as of.
     * @param approvals At least `threshold[TREE_ACCOUNTS]` of them, ascending by signer.
     */
    function setAccountStates(
        AccountStateLeaf[] calldata leaves,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        uint256 k = threshold[TREE_ACCOUNTS];
        if (k == 0) revert TreeNotConfigured(TREE_ACCOUNTS);

        bytes32[] memory keys = new bytes32[](leaves.length);
        bytes32[] memory hashes = new bytes32[](leaves.length);
        for (uint256 i = 0; i < leaves.length; i++) {
            keys[i] = accountKeyFor(leaves[i].wallet);
            hashes[i] = accountStateLeafHash(leaves[i]);
        }

        uint64 n = nonce[TREE_ACCOUNTS];
        FinalPqQuorum.require_(
            registry,
            approvals,
            FinalPqQuorum.digest(
                address(this),
                ACTION_SET_LEAVES,
                anchorBlock,
                keccak256(abi.encode(TREE_ACCOUNTS, n, keys, hashes))
            ),
            writerRole[TREE_ACCOUNTS],
            k,
            FinalPqQuorum.ALG_ML_DSA_87,
            anchorBlock,
            false
        );
        nonce[TREE_ACCOUNTS] = n + 1;

        for (uint256 i = 0; i < leaves.length; i++) {
            _set(TREE_ACCOUNTS, BRANCH_MAIN, keys[i], hashes[i]);
        }

        _bump(TREE_ACCOUNTS, leaves.length);
    }

    /**
     * @notice Write account state into tree 1 from the contract that owns it.
     * @dev No quorum, and no nonce burned: `treeWriter[1]` is the ledger, and
     * the ledger already verified the holder's own signature before it called
     * here. See {treeWriter} for why adding a service quorum on top would be a
     * censorship power rather than a safeguard.
     *
     * Typed, exactly as `setAccountStates` is: the preimage is built HERE, so
     * even the writer contract cannot publish a leaf whose meaning no record on
     * this chain agrees with.
     * @param leaves The account states to write, one per wallet.
     */
    function setAccountStatesAsWriter(AccountStateLeaf[] calldata leaves) external {
        if (msg.sender != treeWriter[TREE_ACCOUNTS]) revert NotAuthorized(msg.sender);
        for (uint256 i = 0; i < leaves.length; i++) {
            _set(TREE_ACCOUNTS, BRANCH_MAIN, accountKeyFor(leaves[i].wallet), accountStateLeafHash(leaves[i]));
        }
        _bump(TREE_ACCOUNTS, leaves.length);
    }

    /**
     * @notice Write raw leaves into any tree from the contract that owns it.
     * @dev The generic sibling of {setAccountStatesAsWriter}, for a tree whose
     * writer is a contract rather than a service quorum. Same authorization —
     * `treeWriter[treeId]` and nothing else — and the same reasoning: the
     * writer has already verified whatever its domain requires, and layering a
     * quorum on top of a contract's own rules is a censorship power rather
     * than a safeguard.
     *
     * UNTYPED, unlike the account path, and that is the trade. Tree 1's
     * preimage is built here so even the ledger cannot publish a leaf whose
     * meaning no record agrees with; a generic writer supplies its own hash,
     * so the leaf means whatever that contract says it means. Acceptable only
     * because the writer is a specific contract this chain's operators
     * installed — its rules are its bytecode, it has no owner and no proxy —
     * and NOT acceptable for a role-gated key. Point `treeWriter` at a
     * contract, never at an externally owned account.
     * @param treeId The tree to write.
     * @param branch The branch within it. Never 0, which `setConfig` alone writes.
     * @param keys Domain keys, one per leaf. Each takes a permanent slot in the
     *        branch on first write.
     * @param leaves The raw (untagged) leaf values.
     */
    function setLeavesAsWriter(uint8 treeId, uint8 branch, bytes32[] calldata keys, bytes32[] calldata leaves)
        external
    {
        if (msg.sender != treeWriter[treeId]) revert NotAuthorized(msg.sender);
        _assertDataBranch(treeId, branch);
        if (keys.length != leaves.length) revert LengthMismatch(keys.length, leaves.length);
        for (uint256 i = 0; i < keys.length; i++) {
            _set(treeId, branch, keys[i], leaves[i]);
        }
        _bump(treeId, keys.length);
    }

    /// @notice The leaf hash `FinalWalletFactory.accountStateLeafHash` computes.
    /// @dev Identical `abi.encode`, identical field order, identical domain, and
    /// that identity is the whole contract between this chain and every
    /// execution chain. `deployedChains` rides through `abi.encode` like every
    /// other field — head offset, then length and rows — so the table is
    /// committed whole and in order. The table is validated here rather than at
    /// each door, so every path into tree 1 gets the same refusal.
    /// @param leaf The account state to commit to.
    /// @return The tagged leaf hash, ready to be placed in tree 1.
    function accountStateLeafHash(AccountStateLeaf memory leaf) public pure returns (bytes32) {
        _assertChainAccounts(leaf.deployedChains);
        return keccak256(
            abi.encode(
                DOMAIN_ACCOUNT_STATE_LEAF,
                leaf.wallet,
                leaf.liveAccess,
                leaf.liveTransaction,
                leaf.recoveryAccess,
                leaf.recoveryTransaction,
                leaf.liveKem,
                leaf.recoveryKem,
                leaf.owner,
                leaf.pqEnabled,
                leaf.frozen,
                leaf.deployedChains,
                leaf.dormantChains,
                leaf.recoveryCredential,
                leaf.guardedChains,
                leaf.version
            )
        );
    }

    /// @notice Reject a `deployedChains` table a resolver could not read.
    /// @dev A well-formed table: no zero chain, no zero account, no chain twice.
    ///      Checked where the leaf is hashed so no door — quorum, writer
    ///      contract, identity projection — can publish a table a resolver
    ///      would read two ways. The duplicate scan is quadratic in the row
    ///      count, which is deliberate: gas is not a constraint on this chain,
    ///      and a sort or a seen-set would cost correctness or storage to save
    ///      something nobody is paying for.
    /// @param rows The table to validate.
    function _assertChainAccounts(ChainAccount[] memory rows) private pure {
        for (uint256 i = 0; i < rows.length; i++) {
            if (rows[i].chainRef == bytes32(0) || rows[i].account == bytes32(0)) {
                revert InvalidChainAccount(rows[i].chainRef, rows[i].account);
            }
            for (uint256 j = 0; j < i; j++) {
                if (rows[j].chainRef == rows[i].chainRef) {
                    revert InvalidChainAccount(rows[i].chainRef, rows[i].account);
                }
            }
        }
    }

    /// @notice The account `wallet`'s published table names on `chainRef`, or
    ///         zero if it has no row there.
    /// @dev A convenience over `accountStateLeafHash`'s input for readers on
    /// this chain; execution chains answer the same question from their synced
    /// record (`FinalWalletFactory.addressOn`). Pure, so it reads the leaf it is
    /// handed and never this contract's storage — the caller is responsible for
    /// having proved that leaf first.
    /// @param leaf The account state to search.
    /// @param chainRef The chain being asked about.
    /// @return The account on that chain, or zero when the table has no row for it.
    function accountOn(AccountStateLeaf memory leaf, bytes32 chainRef) public pure returns (bytes32) {
        for (uint256 i = 0; i < leaf.deployedChains.length; i++) {
            if (leaf.deployedChains[i].chainRef == chainRef) return leaf.deployedChains[i].account;
        }
        return bytes32(0);
    }

    /**
     * @notice The typed trees' write door — `FinalStateRecords` alone.
     * @dev The quorum, the nonce and the write, shared by every typed record.
     * The records contract computed the keys and hashes from the structs it
     * stores; this contract admits nobody else to trees 2, 3 and 4
     * (`setLeaves` refuses them), so the value there can never drift from
     * the commitment here.
     *
     * The digest is byte-identical to `setLeaves`' over the same keys and
     * hashes, deliberately: the typed entrypoints choose the PREIMAGE, not the
     * authorization. A member recomputes one digest whichever door the batch
     * came through, and there is no second approval shape to get wrong.
     *
     * Always branch 1: a typed record is a domain row, and branch 0 belongs to
     * the configuration authority on every tree without exception.
     * @param treeId The typed tree being written.
     * @param keys Domain keys the records contract computed, one per leaf.
     * @param hashes Leaf hashes the records contract computed from its structs.
     * @param anchorBlock The block the approving roster is read as of.
     * @param approvals At least `threshold[treeId]` of them, ascending by signer.
     */
    function writeTyped(
        uint8 treeId,
        bytes32[] memory keys,
        bytes32[] memory hashes,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        if (msg.sender != typedWriter) revert NotAuthorized(msg.sender);
        uint256 k = threshold[treeId];
        if (k == 0) revert TreeNotConfigured(treeId);

        uint64 n = nonce[treeId];
        FinalPqQuorum.require_(
            registry,
            approvals,
            FinalPqQuorum.digest(
                address(this),
                ACTION_SET_LEAVES,
                anchorBlock,
                keccak256(abi.encode(treeId, n, keys, hashes))
            ),
            writerRole[treeId],
            k,
            FinalPqQuorum.ALG_ML_DSA_87,
            anchorBlock,
            false
        );
        nonce[treeId] = n + 1;

        for (uint256 i = 0; i < keys.length; i++) {
            _set(treeId, BRANCH_MAIN, keys[i], hashes[i]);
        }

        _bump(treeId, keys.length);
    }

    /**
     * @notice The typed door for a tree whose leaves live in SEVERAL data branches — tree 9, whose
     *         approvals, revocations, counters and attestations are four key families, each with a
     *         permanent branch. Same writer, same role, same threshold and the same per-tree nonce as
     *         `writeTyped`; the branch is folded into the signed payload so a quorum that approved a
     *         revocation cannot be replayed as an approval.
     * @dev `writeTyped` stays byte-for-byte what it is (trees 2–4 write `BRANCH_MAIN` and their lanes
     *      sign `(treeId, n, keys, hashes)`); this door signs `(treeId, branch, n, keys, hashes)`.
     *      Branch 0 is `setConfig`'s alone.
     * @param treeId The tree.
     * @param branch The data branch every key of this write lives in (`1 .. BRANCH_COUNT - 1`).
     * @param keys Domain keys, as the companion derived them.
     * @param hashes The leaf hashes, one per key.
     * @param anchorBlock The roster anchor the approvals were made against.
     * @param approvals `threshold[treeId]` ML-DSA-87 votes from `writerRole[treeId]` members.
     */
    function writeTypedInBranch(
        uint8 treeId,
        uint8 branch,
        bytes32[] memory keys,
        bytes32[] memory hashes,
        uint64 anchorBlock,
        FinalPqQuorum.Approval[] calldata approvals
    ) external {
        if (msg.sender != typedWriter) revert NotAuthorized(msg.sender);
        _assertDataBranch(treeId, branch);
        if (keys.length != hashes.length) revert LengthMismatch(keys.length, hashes.length);
        uint256 k = threshold[treeId];
        if (k == 0) revert TreeNotConfigured(treeId);
        uint64 n = nonce[treeId];
        FinalPqQuorum.require_(
            registry,
            approvals,
            FinalPqQuorum.digest(
                address(this),
                ACTION_SET_LEAVES,
                anchorBlock,
                keccak256(abi.encode(treeId, branch, n, keys, hashes))
            ),
            writerRole[treeId],
            k,
            FinalPqQuorum.ALG_ML_DSA_87,
            anchorBlock,
            false
        );
        nonce[treeId] = n + 1;
        for (uint256 i = 0; i < keys.length; i++) {
            _set(treeId, branch, keys[i], hashes[i]);
        }
        _bump(treeId, keys.length);
    }

    /**
     * @notice Snapshot every tree's root into a new round.
     * @dev Permissionless, deliberately. Every root being snapshotted was
     * already authorized by its tree's quorum, so this adds no authority — it
     * only fixes a moment. Requiring a signature would put a liveness
     * dependency in front of publication for no security gain.
     *
     * A round that would change nothing is refused, so the round number cannot
     * be advanced by anyone with gas to spend.
     * @return published The round number just written.
     */
    function publishRound() external returns (uint64 published) {
        bool changed;
        for (uint8 t = 1; t <= TREE_COUNT; t++) {
            if (treeVersion[t] != _publishedVersion[t]) {
                changed = true;
                break;
            }
        }
        if (!changed) revert NothingToPublish();

        published = round + 1;
        Round storage r = _rounds[published];
        for (uint8 t = 1; t <= TREE_COUNT; t++) {
            r.roots[t] = liveRoot[t];
            _publishedVersion[t] = treeVersion[t];
        }
        r.roundRoot = _foldForest(_forestLeaves(r.roots));
        r.blockNumber = uint64(block.number);
        // MILLISECONDS, like every instant on this chain.
        r.timestamp = FinalChainTime.nowMs();
        round = published;
        emit RoundPublished(published, r.blockNumber, r.timestamp);
    }

    // ---------------------------------------------------------------- views

    /// @notice Every root from one round. Index by the `TREE_*` constants;
    /// index 0 is unused.
    /// @dev An unpublished round answers all zeros rather than reverting, so a
    ///      caller scanning forward can tell where the history ends.
    /// @param which The round number.
    /// @return The eight tree roots at that round, indexed by tree id.
    function rootsAt(uint64 which) external view returns (bytes32[TREE_COUNT + 1] memory) {
        return _rounds[which].roots;
    }

    /// @notice One tree's root at one round.
    /// @param which The round number.
    /// @param treeId The tree to read.
    /// @return That tree's root at that round; zero if the round is unpublished.
    function rootAt(uint64 which, uint8 treeId) external view returns (bytes32) {
        _assertTree(treeId);
        return _rounds[which].roots[treeId];
    }

    /// @notice The one word that commits to every tree at one round.
    /// @dev The value a consumer pins. Everything in the plane at that instant
    ///      proves against it, which is the only contemporaneity this contract
    ///      offers — the live roots move independently and do not.
    /// @param which The round number.
    /// @return The round root; zero if the round is unpublished on this plane.
    function roundRootAt(uint64 which) external view returns (bytes32) {
        return _rounds[which].roundRoot;
    }

    /**
     * @notice The `FOREST_BITS` siblings that take a tree's root at one round
     *         up to that round's root — appended to `proofFor`, they make a
     *         leaf provable against `roundRootAt(which)` by the same verifier.
     * @dev Folds the round's stored roots in memory rather than keeping the
     * upper levels in storage: the fold is cheap, and one stored copy of a
     * value is one fewer place for two copies to disagree.
     * @param which The round number. Must be published on this plane.
     * @param treeId The tree whose root is being lifted to the round root.
     * @return path The `FOREST_BITS` siblings, lowest level first.
     */
    function roundProofFor(uint64 which, uint8 treeId) external view returns (bytes32[] memory path) {
        _assertTree(treeId);
        if (which == 0 || which > round) revert NoRounds();
        bytes32[] memory level = _forestLeaves(_rounds[which].roots);
        path = new bytes32[](FOREST_BITS);
        uint256 idx = treeId;
        uint256 n = level.length;
        for (uint256 l = 0; l < FOREST_BITS; l++) {
            path[l] = level[idx ^ 1];
            n >>= 1;
            for (uint256 i = 0; i < n; i++) {
                level[i] = _pair(level[2 * i], level[2 * i + 1]);
            }
            idx >>= 1;
        }
    }

    /// @notice The latest round's roots, with the block it was taken at.
    /// @dev Reverts `NoRounds` on a plane that has published nothing, rather
    ///      than answering an empty round that a caller could mistake for a
    ///      real snapshot of an empty plane.
    /// @return which The round number.
    /// @return roots The eight tree roots, indexed by tree id; index 0 unused.
    /// @return blockNumber Block the snapshot was taken in.
    /// @return timestamp Snapshot instant, in milliseconds.
    function latestRound()
        external
        view
        returns (uint64 which, bytes32[TREE_COUNT + 1] memory roots, uint64 blockNumber, uint64 timestamp)
    {
        which = round;
        if (which == 0) revert NoRounds();
        Round storage r = _rounds[which];
        return (which, r.roots, r.blockNumber, r.timestamp);
    }

    /// @notice The raw leaf stored for a key, and whether it has a slot.
    /// @dev The UNTAGGED value, as it was written. The tag is applied when the
    ///      leaf is hashed into the tree, so a caller reproducing a leaf hash
    ///      applies it themselves. A key with no slot answers `(0, false)`
    ///      rather than reverting, so presence is a question this view can be
    ///      asked directly.
    /// @param treeId The tree to read.
    /// @param key The domain key.
    /// @return leaf The stored value, or zero when the key has no slot.
    /// @return present Whether the key holds a slot in this tree.
    function leafOf(uint8 treeId, bytes32 key) external view returns (bytes32 leaf, bool present) {
        uint256 s = _slotPlusOne[treeId][key];
        if (s == 0) return (bytes32(0), false);
        return (_leaf[treeId][s - 1], true);
    }

    /// @notice The permanent slot for a key. Reverts if it has none. The
    /// slot's top `BRANCH_BITS` are its branch.
    /// @dev Stored one-based internally so an unassigned key is distinguishable
    ///      from slot 0, and returned zero-based here — slot 0 of branch 0 is a
    ///      real position.
    /// @param treeId The tree to read.
    /// @param key The domain key.
    /// @return The key's zero-based slot index within the tree.
    function slotOf(uint8 treeId, bytes32 key) public view returns (uint256) {
        uint256 s = _slotPlusOne[treeId][key];
        if (s == 0) revert UnknownKey(treeId, key);
        return s - 1;
    }

    /// @notice The key a slot was handed to, or zero if it is still free —
    /// the enumeration every branch offers: slots `branch << BRANCH_DEPTH`
    /// through `+ branchSlotsUsed(treeId, branch) - 1`.
    /// @dev Because slots are handed out in order and never reused, that range
    ///      is exactly the branch's contents: a reader enumerates a branch on
    ///      chain without an event window and without an indexer.
    /// @param treeId The tree to read.
    /// @param slot The slot index.
    /// @return The key holding that slot, or zero when it was never handed out.
    function keyAt(uint8 treeId, uint256 slot) external view returns (bytes32) {
        return _keyAt[treeId][slot];
    }

    /// @notice Slots handed out in one branch.
    /// @param treeId The tree to read.
    /// @param branch The branch to read.
    /// @return How many slots of that branch are in use — its enumeration bound.
    function branchSlotsUsed(uint8 treeId, uint8 branch) external view returns (uint256) {
        return _branchSlotsUsed[treeId][branch];
    }

    /// @notice One branch's root: the level-`BRANCH_DEPTH` node at its position.
    /// @dev A branch that has never been written answers the empty-subtree hash
    ///      at that level, not zero, because that is genuinely its root.
    /// @param treeId The tree the branch belongs to.
    /// @param branch The branch to read.
    /// @return The branch's root node.
    function branchRoot(uint8 treeId, uint8 branch) external view returns (bytes32) {
        _assertTree(treeId);
        _assertBranch(branch);
        return _nodeAt(treeId, BRANCH_DEPTH, branch);
    }

    /// @notice The first `BRANCH_DEPTH` siblings of `proofFor` — a proof
    /// against the leaf's branch root rather than the tree root.
    /// @dev The same path cut lower. A consumer that only ever needs one
    ///      branch can pin `branchRoot` and verify with fewer siblings; the
    ///      verifier is unchanged, since sorted pairs carry no direction bits.
    /// @param treeId The tree to read.
    /// @param key The domain key. Must already hold a slot.
    /// @return The sibling path from the leaf up to its branch root.
    function branchProofFor(uint8 treeId, bytes32 key) external view returns (bytes32[] memory) {
        _assertTree(treeId);
        return _path(treeId, slotOf(treeId, key), BRANCH_DEPTH);
    }

    /// @notice A configuration row's value, and whether the row exists.
    /// @dev Presence is read from the slot table, not from the value: a row
    ///      deliberately set to zero exists and answers `present`.
    /// @param treeId The tree whose branch 0 holds the row.
    /// @param key The row key, as {configKey} computes it.
    /// @return value The row's single word of value.
    /// @return present Whether the row has ever been written.
    function configValue(uint8 treeId, bytes32 key) external view returns (bytes32 value, bool present) {
        present = _slotPlusOne[treeId][key] != 0;
        value = _configValue[treeId][key];
    }

    /// @notice The branch-0 key of a configuration row: a name the owning
    /// service defines, and a sub-key (a chain reference, an asset, zero).
    /// @dev Its own key domain, so a configuration row can never be handed a
    ///      slot that a domain row of the same tree would want.
    /// @param name The row's name, defined by the service that owns the tree.
    /// @param sub The row's sub-key, or zero when the name stands alone.
    /// @return The branch-0 key.
    function configKey(bytes32 name, bytes32 sub) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_CONFIG_KEY, name, sub));
    }

    /// @notice The leaf a configuration row hashes to.
    /// @dev Binds the tree id as well as the key and the value, so the same row
    ///      in two trees is two different leaves and a proof cannot be carried
    ///      from one tree's branch 0 to another's.
    /// @param treeId The tree the row belongs to.
    /// @param key The row key.
    /// @param value The row value.
    /// @return The untagged leaf value for that row.
    function configLeafHash(uint8 treeId, bytes32 key, bytes32 value) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_CONFIG_LEAF, treeId, key, value));
    }

    /// @notice The tree-8 branch-2 key an owner occupies.
    /// @param owner The owner whose wallet list the row indexes.
    /// @return The branch-2 key.
    function ownerIndexKeyFor(address owner) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_OWNER_INDEX_KEY, owner));
    }

    /// @notice The owner-index leaf: a commitment to the ledger's ordered
    /// `walletsByOwner(owner)`.
    /// @dev A commitment, not the list. The tree is the search structure; the
    ///      ledger holds the readable array this leaf proves, so ORDER matters
    ///      — the same wallets in a different order are a different leaf.
    /// @param owner The owner the index row belongs to.
    /// @param wallets The owner's wallets, in the ledger's own order.
    /// @return The untagged leaf value for that row.
    function ownerIndexLeafHash(address owner, address[] memory wallets) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_OWNER_INDEX_LEAF, owner, wallets));
    }

    /// @notice The tree-8 branch-3 key of one member's slot — a ring position.
    /// @dev The index is reduced modulo `SLOT_KEY_RING` here, so the branch is
    ///      an index over the recent slots and never fills. A caller passes the
    ///      real slot number and does not do the reduction itself.
    /// @param member The co-signer the slot key belongs to.
    /// @param slotIndex The slot number, before the ring modulus.
    /// @return The branch-3 key.
    function slotKeyFor(address member, uint64 slotIndex) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_SLOT_KEY, member, slotIndex % SLOT_KEY_RING));
    }

    /**
     * @notice Project slot keys into tree 8's branch 3 — the co-signers'
     *         per-slot KEM publics the private option seals to.
     * @dev Permissionless, for {syncIdentityLeaves}' reason: the leaf VALUE
     * is `slotKeySource`'s own verdict (the registry verified the member's
     * signature when the key was published, and answers zero once the slot's
     * window has passed), so this adds no authority and only projects. The
     * registry calls it same-tx on publication; anyone may call it to retire a
     * slot that lapsed by time.
     * @param member The co-signer whose ring positions are being projected.
     * @param slotIndexes The slots to project. Reduced modulo `SLOT_KEY_RING`.
     */
    function syncSlotKeyLeaves(address member, uint64[] calldata slotIndexes) external {
        address source = slotKeySource;
        if (source == address(0)) revert SlotKeySourceUnset();
        for (uint256 i = 0; i < slotIndexes.length; i++) {
            _set(
                TREE_IDENTITY,
                BRANCH_SLOT_KEYS,
                slotKeyFor(member, slotIndexes[i]),
                ISlotKeySource(source).slotKeyLeafOf(member, slotIndexes[i])
            );
        }
        _bump(TREE_IDENTITY, slotIndexes.length);
    }

    /// @notice The tree-8 branch-4 key of one tunnel endpoint.
    /// @param endpointId The endpoint's certificate subject key id.
    /// @return The branch-4 key.
    function endpointKeyFor(bytes32 endpointId) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_ENDPOINT_KEY, endpointId));
    }

    /**
     * @notice Project tunnel endpoints into tree 8's branch 4.
     * @dev Permissionless, for {syncSlotKeyLeaves}' reason: the leaf VALUE is
     * `endpointSource`'s own verdict — the registry admitted the certificate
     * under the registrar quorum with the holder's proof of possession, and
     * answers the revoked status once it is revoked — so this adds no authority
     * and only projects. The registry calls it same-tx on registration and
     * revocation; anyone may call it to re-project.
     * @param endpointIds The endpoint ids to project.
     */
    function syncEndpointLeaves(bytes32[] calldata endpointIds) external {
        address source = endpointSource;
        if (source == address(0)) revert EndpointSourceUnset();
        for (uint256 i = 0; i < endpointIds.length; i++) {
            _set(
                TREE_IDENTITY,
                BRANCH_ENDPOINTS,
                endpointKeyFor(endpointIds[i]),
                IEndpointSource(source).endpointLeafOf(endpointIds[i])
            );
        }
        _bump(TREE_IDENTITY, endpointIds.length);
    }

    /**
     * @notice The sibling path for a key, ready for
     *         `FinalMerkle.verifyTaggedSortedProof` on any chain.
     * @dev The sanctioned way to ask any tree a question, tree 1 above all: a
     * view, so a caller fetches a proof with one `eth_call` and never rebuilds
     * the tree off chain. Rebuilding is where a divergence between what the
     * chain holds and what a service believes it holds would come from, and
     * this removes the second implementation entirely.
     *
     * A rebuild is not merely redundant, it is wrong. This tree is fixed depth,
     * zero-padded and insertion-ordered; a fold that sorts its leaves or sizes
     * itself to the leaf count produces a different root, and a proof against
     * that root verifies nowhere while looking perfectly well formed.
     *
     * Pair the path with {liveRoot} for the current root, or append
     * {roundProofFor} and verify against {roundRootAt} to pin a whole round.
     * @param treeId The tree to read.
     * @param key The domain key. Must already hold a slot.
     * @return The `DEPTH` siblings from the leaf up to the tree root, lowest first.
     */
    function proofFor(uint8 treeId, bytes32 key) external view returns (bytes32[] memory) {
        _assertTree(treeId);
        return _path(treeId, slotOf(treeId, key), DEPTH);
    }

    /// @notice The empty-subtree hash at a level. Level `DEPTH` is the root of
    /// a tree with nothing in it.
    /// @dev What an off-chain verifier needs to reproduce the padding this tree
    ///      uses. Levels run `0 .. ROUND_DEPTH`; anything above reverts on the
    ///      array bound.
    /// @param level The level to read.
    /// @return The hash of an empty subtree of that height.
    function emptyRoot(uint256 level) external view returns (bytes32) {
        return _zero[level];
    }

    /// @notice The tree-1 key a wallet occupies.
    /// @dev A full-width hash rather than the packed address, so a hashed key
    ///      cannot be steered onto a slot an address key would take.
    /// @param wallet The Final Wallet.
    /// @return The tree-1 key.
    function accountKeyFor(address wallet) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_ACCOUNT_KEY, wallet));
    }

    /**
     * @notice Copy a registered identity into tree 1 as an account-state leaf.
     * @dev Services are Final Wallets, so a service's leaf is the SAME leaf a
     * user's wallet gets — `FinalWalletFactory.AccountStateLeaf`, four key
     * commitments and all. There is no second shape and no second domain,
     * which is what lets every chain that already consumes account state
     * consume a co-signer's identity with no contract change.
     *
     * `owner` is the account itself: a service wallet is its own owner, having
     * no separate holder to speak for it.
     *
     * Permissionless, and for the same reason `publishRound` is: every fact it
     * writes was already authorized when it entered the registry, so this adds
     * no authority and only projects. Gating it would put a liveness dependency
     * in front of publishing a revocation, which is the one thing that must
     * never wait.
     * @param accounts The registered service identities to project. Each must
     *        already be registered; an unknown account reverts `UnknownKey`.
     */
    function syncIdentities(address[] calldata accounts) external {
        // One table for the batch: a service is its own canonical address on
        // every enabled chain, so the rows differ only in `account`.
        bytes32[] memory chainRefs = _enabledChainRefs();
        for (uint256 i = 0; i < accounts.length; i++) {
            address who = accounts[i];
            FinalIdentityRegistry.Identity memory id = registry.identityOf(who);
            if (!id.registered) revert UnknownKey(TREE_ACCOUNTS, accountKeyFor(who));
            (bytes32 la, bytes32 lt, bytes32 ra, bytes32 rt) = registry.keyCommitments(who);
            (bytes32 lk, bytes32 rk) = registry.kemCommitments(who);
            ChainAccount[] memory table = new ChainAccount[](chainRefs.length);
            for (uint256 c = 0; c < chainRefs.length; c++) {
                table[c] = ChainAccount({chainRef: chainRefs[c], account: bytes32(uint256(uint160(who)))});
            }
            AccountStateLeaf memory leaf = AccountStateLeaf({
                wallet: who,
                liveAccess: la,
                liveTransaction: lt,
                recoveryAccess: ra,
                recoveryTransaction: rt,
                liveKem: lk,
                recoveryKem: rk,
                // A service reaches every chain the registry has enabled, at
                // its own address, and is never dormant: dormancy measures an
                // ABSENT holder, and these identities have no holder to be
                // absent.
                deployedChains: table,
                dormantChains: 0,
                recoveryCredential: bytes32(0),
                guardedChains: 0,
                owner: who,
                // Every identity here is PQ by construction — there is no other
                // kind of key in this registry.
                pqEnabled: true,
                // Revocation is a leaf that CHANGES, not one that disappears.
                // A consumer holding an old proof gets a stale `false`, which is
                // why the round is the thing to pin.
                frozen: id.revoked,
                version: id.version
            });
            _set(TREE_ACCOUNTS, BRANCH_MAIN, accountKeyFor(who), accountStateLeafHash(leaf));
        }
        _bump(TREE_ACCOUNTS, accounts.length);
    }

    /// @notice The tree-8 slot key an identity occupies.
    /// @dev Its own domain, separate from the tree-1 account key, so one
    ///      account's admission row and its state row can never collide.
    /// @param account The identity.
    /// @return The tree-8 branch-1 key.
    function identityKeyFor(address account) public pure returns (bytes32) {
        return keccak256(abi.encode(DOMAIN_IDENTITY_TREE_KEY, account));
    }

    /**
     * @notice Project identities into tree 8 — the wallet-creation admission
     *         set whose live root every execution chain anchors as its
     *         `currentIdentityRoot`.
     *
     * @dev The leaf VALUE is the registry's own verdict —
     * `FinalIdentityRegistry.identityTreeLeafOf`: the execution chains'
     * identity leaf while the identity stands, zero once it does not. Derived
     * there rather than here because every input (serial, the six key
     * commitments, standing, the CA depth pair) is registry storage, and this
     * contract sits against EIP-170 while the registry does not.
     *
     * Permissionless, for exactly {syncIdentities}' reason: every fact
     * written here was authorized when it entered the registry, so this adds
     * no authority and only projects. The registry itself calls it same-tx on
     * every identity mutation (register, rotate, roles, revoke, LMS-key ops),
     * which is what makes the root CONTINUOUS; the open door additionally lets
     * anyone retire a leaf whose standing lapsed by TIME — expiry moves no
     * registry storage, so no mutation hook can ever fire for it.
     *
     * There is no quorum door and no writer seat (both raw doors refuse this
     * tree), so the strongest thing any caller can do here is copy the
     * registry's own verdict.
     * @param accounts The identities to project. An unregistered account
     *        projects the registry's zero verdict, which retires its leaf.
     */
    function syncIdentityLeaves(address[] calldata accounts) external {
        for (uint256 i = 0; i < accounts.length; i++) {
            _set(TREE_IDENTITY, BRANCH_MAIN, identityKeyFor(accounts[i]), registry.identityTreeLeafOf(accounts[i]));
        }
        _bump(TREE_IDENTITY, accounts.length);
    }

    /**
     * @notice Per-tree quorum health: can each configured tree still be written?
     * @dev A threshold above the live member count is not a strict quorum, it is
     * a tree that reverts forever with nothing naming the roster as the cause.
     * `configureTree` refuses to create that state, but revocation can arrive at
     * it later — revocation must never be blocked on quorum arithmetic, so the
     * check has to be something monitoring reads rather than something the
     * contract enforces after the fact.
     * @return live Members currently holding each tree's writer role; zero for
     *         an unconfigured tree, which is not the same as a starved one.
     * @return required Each tree's threshold, indexed by tree id.
     * @return ok Whether each tree can still be written. An unconfigured tree
     *         reports `true`: it is closed, not starved.
     */
    function quorumHealth()
        external
        view
        returns (uint256[] memory live, uint256[] memory required, bool[] memory ok)
    {
        live = new uint256[](TREE_COUNT + 1);
        required = new uint256[](TREE_COUNT + 1);
        ok = new bool[](TREE_COUNT + 1);
        for (uint8 t = 1; t <= TREE_COUNT; t++) {
            required[t] = threshold[t];
            live[t] = required[t] == 0 ? 0 : registry.liveMemberCount(writerRole[t]);
            ok[t] = required[t] == 0 || live[t] >= required[t];
        }
    }

    // -------------------------------------------------------------- internal

    /// @notice The chain set a service account's `deployedChains` table is built from.
    /// @dev The enabled chain references `chainSource` knows, or none if it is
    ///      unset. Read through the narrow interface so this contract need not
    ///      import the registry that imports it. An unset source answers an
    ///      empty list rather than reverting, because a plane whose registry is
    ///      not yet seeded must still be able to project its identities.
    /// @return The enabled chain references, or an empty list when unset.
    function _enabledChainRefs() private view returns (bytes32[] memory) {
        address source = chainSource;
        if (source == address(0)) return new bytes32[](0);
        return IChainSource(source).enabledChainRefs();
    }

    /// @notice Refuse a tree id outside `1 .. TREE_COUNT`.
    /// @dev Trees are 1-indexed so a tree id doubles as its position in the
    ///      round tree; id 0 is the unused position there and not a tree here.
    /// @param treeId The id to check.
    function _assertTree(uint8 treeId) private pure {
        if (treeId == 0 || treeId > TREE_COUNT) revert UnknownTree(treeId);
    }

    /// @notice Refuse a branch id no slot can encode.
    /// @dev The bound is the branch COUNT, not the count of branches in use: an
    ///      unused branch is a legal, empty subtree.
    /// @param branch The id to check.
    function _assertBranch(uint8 branch) private pure {
        if (branch >= BRANCH_COUNT) revert UnknownBranch(branch);
    }

    /// @notice Refuse a branch a quorum or a writer contract may not write.
    /// @dev A branch a quorum or a writer may write: any but the config branch.
    ///      Branch 0 belongs to the configuration authority on every tree, so
    ///      the refusal is structural rather than per-tree.
    /// @param treeId The tree, carried so the revert names it.
    /// @param branch The branch being written.
    function _assertDataBranch(uint8 treeId, uint8 branch) private pure {
        _assertBranch(branch);
        if (branch == BRANCH_CONFIG) revert ConfigBranchReserved(treeId);
    }

    /// @notice Advance a tree's write counter and announce the new root.
    /// @dev Version + event, the tail of every write door. Called AFTER the
    ///      leaves have settled, so the event carries the root a reader will
    ///      see, and the counter is what {publishRound} compares to decide
    ///      whether a round would carry anything new.
    /// @param treeId The tree that moved.
    /// @param count Leaves in the batch, for the event.
    function _bump(uint8 treeId, uint256 count) private {
        uint64 v = treeVersion[treeId] + 1;
        treeVersion[treeId] = v;
        emit LeavesSet(treeId, count, liveRoot[treeId], v);
    }

    /// @notice The one internal-node hash every tree, branch and round shares.
    /// @dev `keccak256(0x01 ‖ lo ‖ hi)`, the pair sorted — the one node hash.
    ///      Sorting is what makes a proof position-agnostic, so it carries no
    ///      direction bits; the 0x01 tag is what keeps an internal node from
    ///      ever colliding with a leaf, which is hashed under 0x00.
    /// @param a One child.
    /// @param b The other child.
    /// @return The parent node.
    function _pair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        (bytes32 lo, bytes32 hi) = a < b ? (a, b) : (b, a);
        return keccak256(abi.encodePacked(bytes1(0x01), lo, hi));
    }

    /// @notice Collect the siblings from a slot up a given number of levels.
    /// @dev The sibling path from a slot up `height` levels. One routine serves
    ///      the branch proof and the tree proof; only the height differs, which
    ///      is why the two can never disagree about a shared prefix.
    /// @param treeId The tree to read.
    /// @param idx The starting slot. Consumed as the walk climbs.
    /// @param height How many levels to climb.
    /// @return path The siblings, lowest level first.
    function _path(uint8 treeId, uint256 idx, uint256 height) private view returns (bytes32[] memory path) {
        path = new bytes32[](height);
        for (uint256 l = 0; l < height; l++) {
            path[l] = _nodeAt(treeId, l, idx ^ 1);
            idx >>= 1;
        }
    }

    /// @notice Lay the tree roots out as the leaves of the round tree.
    /// @dev The forest's leaves: the tree roots at their positions, the
    ///      empty tree at the rest. Tree `t` sits at position `t`, so the
    ///      round proof's index is the tree id with no translation, and the
    ///      unused positions hold the empty TREE root rather than zero — they
    ///      are genuinely empty trees, and hashing them as zero would make the
    ///      round root unreproducible off chain.
    /// @param roots The round's tree roots, indexed by tree id.
    /// @return level The `1 << FOREST_BITS` leaves of the round tree.
    function _forestLeaves(bytes32[TREE_COUNT + 1] memory roots) private view returns (bytes32[] memory level) {
        level = new bytes32[](1 << FOREST_BITS);
        for (uint256 p = 0; p < level.length; p++) {
            level[p] = (p >= 1 && p <= TREE_COUNT) ? roots[p] : _zero[DEPTH];
        }
    }

    /// @notice Fold the round tree's leaves down to the round root.
    /// @dev Fold a power-of-two level to its root, in place. The input array is
    ///      overwritten, so the caller must not reuse it afterwards.
    /// @param level The level to fold. Length must be a power of two.
    /// @return The root of that level.
    function _foldForest(bytes32[] memory level) private pure returns (bytes32) {
        for (uint256 n = level.length; n > 1; n >>= 1) {
            for (uint256 i = 0; i < n / 2; i++) {
                level[i] = _pair(level[2 * i], level[2 * i + 1]);
            }
        }
        return level[0];
    }

    /// @notice Place one leaf, assigning the key a permanent slot on first sight.
    /// @dev The single point every write door funnels through, which is what
    ///      makes the slot discipline unconditional: a key is handed the next
    ///      free position in its branch, remembered in both directions, and
    ///      keeps it for the life of the contract. A key that already holds a
    ///      slot in a DIFFERENT branch is refused rather than moved — moving it
    ///      would silently invalidate every proof anyone holds for it.
    ///
    ///      The update then rehashes exactly `DEPTH` nodes up the leaf's own
    ///      path, so the cost of a write is the height of the tree and not the
    ///      number of leaves in it. This is also where the tree's shape comes
    ///      from: fixed height, zero-padded siblings, insertion-ordered slots.
    /// @param treeId The tree to write.
    /// @param branch The branch the key belongs to.
    /// @param key The domain key.
    /// @param leaf The raw (untagged) value to store.
    function _set(uint8 treeId, uint8 branch, bytes32 key, bytes32 leaf) private {
        uint256 s = _slotPlusOne[treeId][key];
        uint256 idx;
        if (s == 0) {
            uint256 used = _branchSlotsUsed[treeId][branch];
            if (used >= BRANCH_CAPACITY) revert BranchFull(treeId, branch);
            idx = (uint256(branch) << BRANCH_DEPTH) | used;
            _branchSlotsUsed[treeId][branch] = used + 1;
            slotsUsed[treeId] += 1;
            _slotPlusOne[treeId][key] = idx + 1;
            _keyAt[treeId][idx] = key;
        } else {
            idx = s - 1;
            uint8 have = uint8(idx >> BRANCH_DEPTH);
            if (have != branch) revert BranchMismatch(treeId, key, have, branch);
        }

        _leaf[treeId][idx] = leaf;

        bytes32 cursor = keccak256(abi.encodePacked(bytes1(0x00), leaf));
        for (uint256 l = 0; l < DEPTH; l++) {
            cursor = _pair(cursor, _nodeAt(treeId, l, idx ^ 1));
            idx >>= 1;
            _node[treeId][l + 1][idx] = cursor;
        }
        liveRoot[treeId] = cursor;
    }

    /// @notice One node of a tree, at any level, with empty positions filled in.
    /// @dev Level 0 is derived from the leaf store rather than duplicated into
    /// `_node`, so there is one place a leaf lives and no way for the two to
    /// disagree. Unset positions fall through to the empty-subtree hash — the
    /// zero padding that gives the tree its fixed height, and the reason an
    /// off-chain rebuild must pad to the same height to reach the same root.
    /// @param treeId The tree to read.
    /// @param level The level, 0 being the leaves.
    /// @param index The position at that level.
    /// @return The node, or the empty-subtree hash when nothing was written there.
    function _nodeAt(uint8 treeId, uint256 level, uint256 index) private view returns (bytes32) {
        if (level == 0) {
            return keccak256(abi.encodePacked(bytes1(0x00), _leaf[treeId][index]));
        }
        bytes32 v = _node[treeId][level][index];
        return v == bytes32(0) ? _zero[level] : v;
    }

    // ------------------------------------------------------------------ sweep

    /// @notice The registry the inherited sweep authority resolves members through.
    /// @dev This contract's configuration gate reads the membership registry it
    /// was constructed against, so the sweep authority reads the same one. One
    /// registry for both means a member removed from the roster loses the sweep
    /// at the same instant it loses everything else.
    /// @return The immutable identity registry pinned at construction.
    function _sweepRegistry() internal view override returns (FinalIdentityRegistry) {
        return registry;
    }

    /// @dev Nothing is reserved because nothing is owed: this contract has no
    /// payable entrypoint and no custody line — it records, it does not hold.
    /// Anything it carries arrived by accident and is sweepable in full.
}

contracts/utils/FinalSweep.sol

// SPDX-License-Identifier: BUSL-1.1
// Copyright (c) 2024-2026 Final DeFi
// Licensed under the Business Source License 1.1 (the "License")
//
// Change Date: 2029-01-01
// Change License: GPL-2.0-or-later
//
// Additional Use Grant:
// 1. Any person or entity may inherit this sweep surface into contracts that
//    integrate with the Final DeFi Protocol, in order to recover assets sent to
//    them by mistake.
// 2. Protocol operators and integrators may call the sweep entrypoints it
//    declares, subject to each inheriting contract's own authority and reserved
//    balance rules, as part of their integration with the Final DeFi Protocol.
// 3. For the avoidance of doubt, this Grant does NOT permit the commercial
//    deployment of a Fork of this sweep surface or a competing asset-recovery
//    plane derived from it without permission prior to the Change Date.
//
// @author Final DeFi
// @version 1.0.0
pragma solidity ^0.8.20;

/// @notice The asset kinds a sweep can move. `Native` ignores `asset` and
/// `id`; `Erc20` ignores `id`; `Erc721` reads `id` as the token id and moves
/// exactly one; `Erc1155` reads both.
enum SweepKind { Native, Erc20, Erc721, Erc1155 }

/**
 * @title Final Sweep
 * @notice One sweep surface, on every contract of ours that can end up holding
 *         an asset it does not owe to anybody.
 *
 * @dev Assets arrive at protocol contracts that were never meant to hold them:
 * a bridge delivers to the wrong leg, a user sends an ERC-20 to a registry, an
 * airdrop lands on the gateway, an NFT is safe-transferred into the vault. Left
 * alone that value is destroyed. The sweep is how it comes back — and the
 * single rule it must never break is that a sweep moves SURPLUS and nothing
 * else.
 *
 * Three seams make that rule per-contract:
 *
 *  - `_requireSweepAuthority()` — the treasury role, expressed in whatever
 *    access plane the host contract already has (`FinalAccessController` roles,
 *    a cross-chain authority, a quorum). No new authority is introduced.
 *  - `_sweepDestinations()` — where a sweep may pay. Ours is a two-address
 *    answer because a contract normally has exactly two legitimate ones (the
 *    gateway and the treasury); a contract with one returns it twice.
 *    `FinalGateway` overrides `_requireSweepDestination` outright: the gateway
 *    is the drain of the whole system and sweeps ONWARD to anywhere.
 *  - `_sweepReserved(kind, asset, id)` — the part of the raw balance that is
 *    NOT surplus: fee deposits, the pending-settlement bucket, searcher
 *    collateral, settlement custody, vaulted entries, locked PHI. The default
 *    is zero, which is correct for a contract that custodies nothing; every
 *    contract that custodies something overrides it and is the one place the
 *    liability is stated.
 *
 * The surplus is measured LIVE against the raw balance at call time, so a
 * re-entrant destination re-measures against a balance that already fell —
 * there is no cached figure to double-spend. Nothing here writes storage, so
 * there is no state for a callback to observe half-updated either.
 *
 * The three ERC-721/ERC-1155 receiver hooks are part of the same surface and
 * for the same reason: `safeTransferFrom` reverts into a contract that does not
 * answer them, so without these an NFT sent to one of ours does not land at
 * all — which is not safety, it is a different way to lose it.
 */
abstract contract FinalSweep {
    /// @notice `msg.sender` does not hold this contract's sweep authority.
    error SweepUnauthorized(address caller);
    /// @notice `to` is neither of this contract's sweep destinations.
    error SweepDestinationNotAllowed(address to);
    /// @notice The requested amount is above the surplus: the difference is
    /// owed to somebody (a deposit, a custody total, a vaulted entry).
    error SweepAboveSurplus(address asset, uint256 requested, uint256 surplus);
    /// @notice A sweep of nothing.
    error SweepZeroAmount();
    /// @notice The transfer leg failed, or the token returned `false`.
    error SweepTransferFailed(address asset);

    /// @notice `amount` of `asset` (`id` for the non-fungible kinds) left this
    /// contract for `to` under the sweep authority.
    event AssetSwept(SweepKind indexed kind, address indexed asset, address indexed to, uint256 id, uint256 amount);

    // ─────────────────────────────── seams ───────────────────────────────

    /// @dev Reverts unless `msg.sender` may sweep. The host contract's own
    /// treasury role — never a new one.
    function _requireSweepAuthority() internal view virtual;

    /// @dev The (at most two) addresses a sweep may pay. A contract with one
    /// legitimate destination returns it twice.
    function _sweepDestinations() internal view virtual returns (address a, address b);

    /// @dev The part of the raw balance that is owed and therefore never
    /// sweepable. Zero for a contract that custodies nothing.
    function _sweepReserved(SweepKind, address, uint256) internal view virtual returns (uint256) {
        return 0;
    }

    /// @dev Destination policy. Overridden by `FinalGateway`, which may sweep
    /// onward to anywhere.
    function _requireSweepDestination(address to) internal view virtual {
        (address a, address b) = _sweepDestinations();
        if (to == address(0) || (to != a && to != b)) revert SweepDestinationNotAllowed(to);
    }

    // ────────────────────────────── surface ──────────────────────────────

    /// @notice The surplus of `asset` (`id` for the non-fungible kinds) — the
    /// raw balance above everything this contract owes. What a sweep may move,
    /// readable before calling one.
    function sweepableSurplus(SweepKind kind, address asset, uint256 id) public view returns (uint256 surplus) {
        uint256 raw = _rawBalance(kind, asset, id);
        uint256 reserved = _sweepReserved(kind, asset, id);
        return raw > reserved ? raw - reserved : 0;
    }

    /// @notice Move `amount` of an asset this contract does not owe to `to`.
    /// @dev Role-gated, destination-gated and bounded by the live surplus. The
    /// three gates are independent: a treasury key cannot pay a destination
    /// the contract does not recognize, and neither key nor destination can
    /// reach a wei that backs a liability.
    /// @param kind Which asset kind is being moved.
    /// @param asset Token contract; ignored for `Native`.
    /// @param id Token id for `Erc721` / `Erc1155`; ignored otherwise.
    /// @param amount Amount to move. `type(uint256).max` means the whole
    ///   surplus, which is what an operator draining a stray balance wants and
    ///   what avoids a race with an inflow landing between the read and the call.
    /// @param to Destination.
    /// @return moved Amount actually moved.
    function sweepAsset(SweepKind kind, address asset, uint256 id, uint256 amount, address to)
        external
        returns (uint256 moved)
    {
        _requireSweepAuthority();
        _requireSweepDestination(to);

        uint256 surplus = sweepableSurplus(kind, asset, id);
        moved = amount == type(uint256).max ? surplus : amount;
        if (moved == 0) revert SweepZeroAmount();
        if (moved > surplus) revert SweepAboveSurplus(asset, moved, surplus);

        if (kind == SweepKind.Native) {
            (bool ok,) = payable(to).call{value: moved}("");
            if (!ok) revert SweepTransferFailed(address(0));
        } else if (kind == SweepKind.Erc20) {
            _callToken(asset, abi.encodeWithSelector(0xa9059cbb, to, moved)); // transfer(address,uint256)
        } else if (kind == SweepKind.Erc721) {
            // `transferFrom`, not `safeTransferFrom`: a rescue must not fail
            // because the treasury destination declines a hook. Which
            // destination is legitimate is already decided above.
            moved = 1;
            _callToken(asset, abi.encodeWithSelector(0x23b872dd, address(this), to, id)); // transferFrom
        } else {
            _callToken(
                asset,
                abi.encodeWithSelector(0xf242432a, address(this), to, id, moved, "") // safeTransferFrom(...)
            );
        }
        emit AssetSwept(kind, asset, to, id, moved);
    }

    // ───────────────────────────── receivers ─────────────────────────────

    /// @notice Accept safe ERC-721 transfers, so one sent here is recoverable
    /// rather than rejected at the door.
    function onERC721Received(address, address, uint256, bytes calldata) external pure virtual returns (bytes4) {
        return 0x150b7a02;
    }

    /// @notice Accept safe ERC-1155 single transfers.
    function onERC1155Received(address, address, uint256, uint256, bytes calldata)
        external
        pure
        virtual
        returns (bytes4)
    {
        return 0xf23a6e61;
    }

    /// @notice Accept safe ERC-1155 batch transfers.
    function onERC1155BatchReceived(address, address, uint256[] calldata, uint256[] calldata, bytes calldata)
        external
        pure
        virtual
        returns (bytes4)
    {
        return 0xbc197c81;
    }

    // ───────────────────────────── internals ─────────────────────────────

    /// @dev The raw held amount, before anything owed is subtracted.
    function _rawBalance(SweepKind kind, address asset, uint256 id) internal view returns (uint256) {
        if (kind == SweepKind.Native) return address(this).balance;
        if (kind == SweepKind.Erc20) {
            (bool ok, bytes memory ret) = asset.staticcall(abi.encodeWithSelector(0x70a08231, address(this)));
            return (ok && ret.length >= 32) ? abi.decode(ret, (uint256)) : 0;
        }
        if (kind == SweepKind.Erc721) {
            (bool ok, bytes memory ret) = asset.staticcall(abi.encodeWithSelector(0x6352211e, id)); // ownerOf
            return (ok && ret.length >= 32 && abi.decode(ret, (address)) == address(this)) ? 1 : 0;
        }
        (bool ok1155, bytes memory ret1155) =
            asset.staticcall(abi.encodeWithSelector(0x00fdd58e, address(this), id)); // balanceOf(address,uint256)
        return (ok1155 && ret1155.length >= 32) ? abi.decode(ret1155, (uint256)) : 0;
    }

    /// @dev One transfer leg, tolerant of the legacy no-return ERC-20 shape the
    /// way `FinalDeployer`'s rescue helpers are: success is "the call did not
    /// revert AND it did not return `false`".
    function _callToken(address token, bytes memory data) private {
        if (token.code.length == 0) revert SweepTransferFailed(token);
        (bool ok, bytes memory ret) = token.call(data);
        if (!ok || (ret.length != 0 && !abi.decode(ret, (bool)))) revert SweepTransferFailed(token);
    }
}

node_modules/@openzeppelin/contracts/utils/StorageSlot.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.20;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC-1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     // Define the slot. Alternatively, use the SlotDerivation library to derive the slot.
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(newImplementation.code.length > 0);
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * TIP: Consider using this library along with {SlotDerivation}.
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    struct Int256Slot {
        int256 value;
    }

    struct StringSlot {
        string value;
    }

    struct BytesSlot {
        bytes value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `Int256Slot` with member `value` located at `slot`.
     */
    function getInt256Slot(bytes32 slot) internal pure returns (Int256Slot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns a `StringSlot` with member `value` located at `slot`.
     */
    function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `StringSlot` representation of the string storage pointer `store`.
     */
    function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
        assembly ("memory-safe") {
            r.slot := store.slot
        }
    }

    /**
     * @dev Returns a `BytesSlot` with member `value` located at `slot`.
     */
    function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
        assembly ("memory-safe") {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
     */
    function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
        assembly ("memory-safe") {
            r.slot := store.slot
        }
    }
}

abi

[
  {
    "type": "constructor",
    "inputs": [
      {
        "name": "registry_",
        "type": "address",
        "internalType": "contract FinalIdentityRegistry"
      },
      {
        "name": "trees_",
        "type": "address",
        "internalType": "contract FinalStateTrees"
      },
      {
        "name": "publisherRole_",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "ALGORITHM_ML_KEM_1024",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint8",
        "internalType": "uint8"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "DOMAIN_SLOT_KEY_LEAF",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "bytes32",
        "internalType": "bytes32"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "GRACE_SECONDS",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "MAX_AHEAD_SECONDS",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "SLOT_SECONDS",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "isUsable",
    "inputs": [
      {
        "name": "member",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "bool",
        "internalType": "bool"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "nowSeconds",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "onERC1155BatchReceived",
    "inputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "",
        "type": "uint256[]",
        "internalType": "uint256[]"
      },
      {
        "name": "",
        "type": "uint256[]",
        "internalType": "uint256[]"
      },
      {
        "name": "",
        "type": "bytes",
        "internalType": "bytes"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "bytes4",
        "internalType": "bytes4"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "type": "function",
    "name": "onERC1155Received",
    "inputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "",
        "type": "bytes",
        "internalType": "bytes"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "bytes4",
        "internalType": "bytes4"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "type": "function",
    "name": "onERC721Received",
    "inputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "",
        "type": "bytes",
        "internalType": "bytes"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "bytes4",
        "internalType": "bytes4"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "type": "function",
    "name": "publishSlotKeys",
    "inputs": [
      {
        "name": "slotIndexes",
        "type": "uint64[]",
        "internalType": "uint64[]"
      },
      {
        "name": "kemPublics",
        "type": "bytes[]",
        "internalType": "bytes[]"
      },
      {
        "name": "algorithm",
        "type": "uint8",
        "internalType": "uint8"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "publisherRole",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "registry",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "contract FinalIdentityRegistry"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "retire",
    "inputs": [
      {
        "name": "member",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "slotIndexes",
        "type": "uint64[]",
        "internalType": "uint64[]"
      }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "slotKeyLeafOf",
    "inputs": [
      {
        "name": "member",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "bytes32",
        "internalType": "bytes32"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "slotKeyOf",
    "inputs": [
      {
        "name": "member",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "tuple",
        "internalType": "struct FinalSlotKeyRegistry.SlotKey",
        "components": [
          {
            "name": "keyHash",
            "type": "bytes32",
            "internalType": "bytes32"
          },
          {
            "name": "algorithm",
            "type": "uint8",
            "internalType": "uint8"
          },
          {
            "name": "publishedAt",
            "type": "uint64",
            "internalType": "uint64"
          }
        ]
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "slotOf",
    "inputs": [
      {
        "name": "timestamp",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "outputs": [
      {
        "name": "",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "type": "function",
    "name": "slotWindow",
    "inputs": [
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "outputs": [
      {
        "name": "start",
        "type": "uint64",
        "internalType": "uint64"
      },
      {
        "name": "end",
        "type": "uint64",
        "internalType": "uint64"
      }
    ],
    "stateMutability": "pure"
  },
  {
    "type": "function",
    "name": "sweepAsset",
    "inputs": [
      {
        "name": "kind",
        "type": "uint8",
        "internalType": "enum SweepKind"
      },
      {
        "name": "asset",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "id",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "amount",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "to",
        "type": "address",
        "internalType": "address"
      }
    ],
    "outputs": [
      {
        "name": "moved",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "sweepableSurplus",
    "inputs": [
      {
        "name": "kind",
        "type": "uint8",
        "internalType": "enum SweepKind"
      },
      {
        "name": "asset",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "id",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "outputs": [
      {
        "name": "surplus",
        "type": "uint256",
        "internalType": "uint256"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "trees",
    "inputs": [],
    "outputs": [
      {
        "name": "",
        "type": "address",
        "internalType": "contract FinalStateTrees"
      }
    ],
    "stateMutability": "view"
  },
  {
    "type": "event",
    "name": "AssetSwept",
    "inputs": [
      {
        "name": "kind",
        "type": "uint8",
        "indexed": true,
        "internalType": "enum SweepKind"
      },
      {
        "name": "asset",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "to",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "id",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      },
      {
        "name": "amount",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "SlotKeyPublished",
    "inputs": [
      {
        "name": "member",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "slotIndex",
        "type": "uint64",
        "indexed": true,
        "internalType": "uint64"
      },
      {
        "name": "algorithm",
        "type": "uint8",
        "indexed": false,
        "internalType": "uint8"
      },
      {
        "name": "keyHash",
        "type": "bytes32",
        "indexed": false,
        "internalType": "bytes32"
      },
      {
        "name": "kemPublic",
        "type": "bytes",
        "indexed": false,
        "internalType": "bytes"
      }
    ],
    "anonymous": false
  },
  {
    "type": "error",
    "name": "EmptyKey",
    "inputs": [
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ]
  },
  {
    "type": "error",
    "name": "LengthMismatch",
    "inputs": []
  },
  {
    "type": "error",
    "name": "NotASlotKeyPublisher",
    "inputs": [
      {
        "name": "sender",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "type": "error",
    "name": "SlotAlreadyLive",
    "inputs": [
      {
        "name": "member",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ]
  },
  {
    "type": "error",
    "name": "SlotInThePast",
    "inputs": [
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ]
  },
  {
    "type": "error",
    "name": "SlotTooFarAhead",
    "inputs": [
      {
        "name": "slotIndex",
        "type": "uint64",
        "internalType": "uint64"
      }
    ]
  },
  {
    "type": "error",
    "name": "SweepAboveSurplus",
    "inputs": [
      {
        "name": "asset",
        "type": "address",
        "internalType": "address"
      },
      {
        "name": "requested",
        "type": "uint256",
        "internalType": "uint256"
      },
      {
        "name": "surplus",
        "type": "uint256",
        "internalType": "uint256"
      }
    ]
  },
  {
    "type": "error",
    "name": "SweepDestinationNotAllowed",
    "inputs": [
      {
        "name": "to",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "type": "error",
    "name": "SweepTransferFailed",
    "inputs": [
      {
        "name": "asset",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "type": "error",
    "name": "SweepUnauthorized",
    "inputs": [
      {
        "name": "caller",
        "type": "address",
        "internalType": "address"
      }
    ]
  },
  {
    "type": "error",
    "name": "SweepZeroAmount",
    "inputs": []
  },
  {
    "type": "error",
    "name": "UnsupportedAlgorithm",
    "inputs": [
      {
        "name": "algorithm",
        "type": "uint8",
        "internalType": "uint8"
      }
    ]
  }
]

read contract

bytecode · 5,531 bytes

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
No CBOR metadata tail — this bytecode was built with cbor_metadata off, the setting our own contracts pin for CREATE2 address invariance.

disassembly

pcopoperand
0000PUSH10x80
0002DUP1
0003PUSH10x40
0005MSTORE
0006PUSH10x04
0008CALLDATASIZE
0009LT
000aISZERO
000bPUSH20x0012
000eJUMPI
000fPUSH0
0010DUP1
0011REVERT
0012JUMPDEST
0013PUSH0
0014SWAP1
0015PUSH0
0016CALLDATALOAD
0017PUSH10xe0
0019SHR
001aSWAP1
001bDUP2
001cPUSH40x150b7a02
0021EQ
0022PUSH20x0e35
0025JUMPI
0026POP
0027DUP1
0028PUSH40x16007f7e
002dEQ
002ePUSH20x0dfc
0031JUMPI
0032DUP1
0033PUSH40x178bcc93
0038EQ
0039PUSH20x0db8
003cJUMPI
003dDUP1
003ePUSH40x3dd28fbf
0043EQ
0044PUSH20x0cf8
0047JUMPI
0048DUP1
0049PUSH40x60a18008
004eEQ
004fPUSH20x0cc2
0052JUMPI
0053DUP1
0054PUSH40x7b103999
0059EQ
005aPUSH20x0c7d
005dJUMPI
005eDUP1
005fPUSH40x96f51f3a
0064EQ
0065PUSH20x0990
0068JUMPI
0069DUP1
006aPUSH40x9d49cc77
006fEQ
0070PUSH20x0972
0073JUMPI
0074DUP1
0075PUSH40xa261c8cd
007aEQ
007bPUSH20x0949
007eJUMPI
007fDUP1
0080PUSH40xa2b85173
0085EQ
0086PUSH20x092c
0089JUMPI
008aDUP1
008bPUSH40xaffada67
0090EQ
0091PUSH20x03f4
0094JUMPI
0095DUP1
0096PUSH40xb4f9ea67
009bEQ
009cPUSH20x0346
009fJUMPI
00a0DUP1
00a1PUSH40xb953a918
00a6EQ
00a7PUSH20x0329
00aaJUMPI
00abDUP1
00acPUSH40xbc197c81
00b1EQ
00b2PUSH20x0290
00b5JUMPI
00b6DUP1
00b7PUSH40xbf35cb62
00bcEQ
00bdPUSH20x025b
00c0JUMPI
00c1DUP1
00c2PUSH40xc37df164
00c7EQ
00c8PUSH20x023f
00cbJUMPI
00ccDUP1
00cdPUSH40xc57bcaaa
00d2EQ
00d3PUSH20x0204
00d6JUMPI
00d7DUP1
00d8PUSH40xefc1544f
00ddEQ
00dePUSH20x01c7
00e1JUMPI
00e2DUP1
00e3PUSH40xf23a6e61
00e8EQ
00e9PUSH20x016c
00ecJUMPI
00edDUP1
00eePUSH40xf4e885db
00f3EQ
00f4PUSH20x0131
00f7JUMPI
00f8PUSH40xf9091ec7
00fdEQ
00fePUSH20x0105
0101JUMPI
0102PUSH0
0103DUP1
0104REVERT
0105JUMPDEST
0106CALLVALUE
0107PUSH20x012e
010aJUMPI
010bDUP1
010cPUSH10x03
010eNOT
010fCALLDATASIZE
0110ADD
0111SLT
0112PUSH20x012e
0115JUMPI
0116POP
0117PUSH10x20
0119PUSH10x01
011bPUSH10x01
011dPUSH10x40
011fSHL
0120SUB
0121PUSH20x03e8
0124TIMESTAMP
0125DIV
0126AND
0127PUSH10x40
0129MLOAD
012aSWAP1
012bDUP2
012cMSTORE
012dRETURN
012eJUMPDEST
012fDUP1
0130REVERT
0131JUMPDEST
0132POP
0133CALLVALUE
0134PUSH20x012e
0137JUMPI
0138DUP1
0139PUSH10x03
013bNOT
013cCALLDATASIZE
013dADD
013eSLT
013fPUSH20x012e
0142JUMPI
0143PUSH10x20
0145PUSH10x40
0147MLOAD
0148PUSH320x0000000000000000000000000000000000000000000000000000000000000002
0169DUP2
016aMSTORE
016bRETURN
016cJUMPDEST
016dPOP
016eCALLVALUE
016fPUSH20x012e
0172JUMPI
0173PUSH10xa0
0175CALLDATASIZE
0176PUSH10x03
0178NOT
0179ADD
017aSLT
017bPUSH20x012e
017eJUMPI
017fPUSH20x0186
0182PUSH20x0e88
0185JUMP
0186JUMPDEST
0187POP
0188PUSH20x018f
018bPUSH20x0e9e
018eJUMP
018fJUMPDEST
0190POP
0191PUSH10x84
0193CALLDATALOAD
0194PUSH10x01
0196PUSH10x01
0198PUSH10x40
019aSHL
019bSUB
019cDUP2
019dGT
019ePUSH20x01c3
01a1JUMPI
01a2PUSH20x01af
01a5SWAP1
01a6CALLDATASIZE
01a7SWAP1
01a8PUSH10x04
01aaADD
01abPUSH20x0eb4
01aeJUMP
01afJUMPDEST
01b0POP
01b1POP
01b2PUSH10x40
01b4MLOAD
01b5PUSH40xf23a6e61
01baPUSH10xe0
01bcSHL
01bdDUP2
01beMSTORE
01bfPUSH10x20
01c1SWAP1
01c2RETURN
01c3JUMPDEST
01c4POP
01c5DUP1
01c6REVERT
01c7JUMPDEST
01c8POP
01c9CALLVALUE
01caPUSH20x012e
01cdJUMPI
01cePUSH10x20
01d0CALLDATASIZE
01d1PUSH10x03
01d3NOT
01d4ADD
01d5SLT
01d6PUSH20x012e
01d9JUMPI
01daPUSH10x40
01dcPUSH10x01
01dePUSH10x01
01e0PUSH10x40
01e2SHL
01e3SUB
01e4PUSH20x01f3
01e7PUSH20x01ee
01eaPUSH20x0ee1
01edJUMP
01eeJUMPDEST
01efPUSH20x11d0
01f2JUMP
01f3JUMPDEST
01f4DUP4
01f5MLOAD
01f6SWAP2
01f7DUP4
01f8AND
01f9DUP3
01faMSTORE
01fbSWAP1
01fcSWAP2
01fdAND
01fePUSH10x20
0200DUP3
0201ADD
0202MSTORE
0203RETURN
0204JUMPDEST
0205POP
0206CALLVALUE
0207PUSH20x012e
020aJUMPI
020bDUP1
020cPUSH10x03
020eNOT
020fCALLDATASIZE
0210ADD
0211SLT
0212PUSH20x012e
0215JUMPI
0216PUSH10x20
0218PUSH10x40
021aMLOAD
021bPUSH320x950ffa6ffe5372ffbba1d3c001d1b4dde1b251b8f53aa8d8bb11cc9691ac6c17
023cDUP2
023dMSTORE
023eRETURN
023fJUMPDEST
0240POP
0241CALLVALUE
0242PUSH20x012e
0245JUMPI
0246DUP1
0247PUSH10x03
0249NOT
024aCALLDATASIZE
024bADD
024cSLT
024dPUSH20x012e
0250JUMPI
0251PUSH10x20
0253PUSH10x40
0255MLOAD
0256PUSH10x01
0258DUP2
0259MSTORE
025aRETURN
025bJUMPDEST
025cPOP
025dCALLVALUE
025ePUSH20x012e
0261JUMPI
0262PUSH10x40
0264CALLDATASIZE
0265PUSH10x03
0267NOT
0268ADD
0269SLT
026aPUSH20x012e
026dJUMPI
026ePUSH10x20
0270PUSH20x0288
0273PUSH20x027a
0276PUSH20x0e88
0279JUMP
027aJUMPDEST
027bPUSH20x0282
027ePUSH20x0ef7
0281JUMP
0282JUMPDEST
0283SWAP1
0284PUSH20x1109
0287JUMP
0288JUMPDEST
0289PUSH10x40
028bMLOAD
028cSWAP1
028dDUP2
028eMSTORE
028fRETURN
0290JUMPDEST
0291POP
0292CALLVALUE
0293PUSH20x012e
0296JUMPI
0297PUSH10xa0
0299CALLDATASIZE
029aPUSH10x03
029cNOT
029dADD
029eSLT
029fPUSH20x012e
02a2JUMPI
02a3PUSH20x02aa
02a6PUSH20x0e88
02a9JUMP
02aaJUMPDEST
02abPOP
02acPUSH20x02b3
02afPUSH20x0e9e
02b2JUMP
02b3JUMPDEST
02b4POP
02b5PUSH10x44
02b7CALLDATALOAD
02b8PUSH10x01
02baPUSH10x01
02bcPUSH10x40
02beSHL
02bfSUB
02c0DUP2
02c1GT
02c2PUSH20x01c3
02c5JUMPI
02c6PUSH20x02d3
02c9SWAP1
02caCALLDATASIZE
02cbSWAP1
02ccPUSH10x04
02ceADD
02cfPUSH20x0f0d
02d2JUMP
02d3JUMPDEST
02d4POP
02d5POP
02d6PUSH10x64
02d8CALLDATALOAD
02d9PUSH10x01
02dbPUSH10x01
02ddPUSH10x40
02dfSHL
02e0SUB
02e1DUP2
02e2GT
02e3PUSH20x01c3
02e6JUMPI
02e7PUSH20x02f4
02eaSWAP1
02ebCALLDATASIZE
02ecSWAP1
02edPUSH10x04
02efADD
02f0PUSH20x0f0d
02f3JUMP
02f4JUMPDEST
02f5POP
02f6POP
02f7PUSH10x84
02f9CALLDATALOAD
02faPUSH10x01
02fcPUSH10x01
02fePUSH10x40
0300SHL
0301SUB
0302DUP2
0303GT
0304PUSH20x01c3
0307JUMPI
0308PUSH20x0315
030bSWAP1
030cCALLDATASIZE
030dSWAP1
030ePUSH10x04
0310ADD
0311PUSH20x0eb4
0314JUMP
0315JUMPDEST
0316POP
0317POP
0318PUSH10x40
031aMLOAD
031bPUSH40xbc197c81
0320PUSH10xe0
0322SHL
0323DUP2
0324MSTORE
0325PUSH10x20
0327SWAP1
0328RETURN
0329JUMPDEST
032aPOP
032bCALLVALUE
032cPUSH20x012e
032fJUMPI
0330DUP1
0331PUSH10x03
0333NOT
0334CALLDATASIZE
0335ADD
0336SLT
0337PUSH20x012e
033aJUMPI
033bPUSH10x20
033dPUSH10x40
033fMLOAD
0340PUSH20x0258
0343DUP2
0344MSTORE
0345RETURN
0346JUMPDEST
0347POP
0348CALLVALUE
0349PUSH20x012e
034cJUMPI
034dPUSH10x40
034fCALLDATASIZE
0350PUSH10x03
0352NOT
0353ADD
0354SLT
0355PUSH20x012e
0358JUMPI
0359PUSH10x01
035bPUSH10x01
035dPUSH10x40
035fSHL
0360SUB
0361PUSH10x40
0363PUSH20x036a
0366PUSH20x0e88
0369JUMP
036aJUMPDEST
036bSWAP3
036cPUSH20x0373
036fPUSH20x0ef7
0372JUMP
0373JUMPDEST
0374SWAP4
0375DUP2
0376DUP4
0377DUP1
0378MLOAD
0379PUSH20x0381
037cDUP2
037dPUSH20x0f3d
0380JUMP
0381JUMPDEST
0382DUP3
0383DUP2
0384MSTORE
0385DUP3
0386PUSH10x20
0388DUP3
0389ADD
038aMSTORE
038bADD
038cMSTORE
038dPUSH10x01
038fDUP1
0390PUSH10xa0
0392SHL
0393SUB
0394AND
0395DUP2
0396MSTORE
0397DUP1
0398PUSH10x20
039aMSTORE
039bKECCAK256
039cSWAP2
039dAND
039ePUSH0
039fMSTORE
03a0PUSH10x20
03a2MSTORE
03a3PUSH10x60
03a5PUSH10x40
03a7PUSH0
03a8KECCAK256
03a9PUSH10x01
03abPUSH10x01
03adPUSH10x40
03afSHL
03b0SUB
03b1PUSH10x40
03b3MLOAD
03b4PUSH20x03bc
03b7DUP2
03b8PUSH20x0f3d
03bbJUMP
03bcJUMPDEST
03bdPUSH10xff
03bfPUSH10x01
03c1DUP5
03c2SLOAD
03c3SWAP5
03c4DUP6
03c5DUP5
03c6MSTORE
03c7ADD
03c8SLOAD
03c9SWAP2
03caDUP4
03cbPUSH10x40
03cdPUSH10x20
03cfDUP4
03d0ADD
03d1SWAP3
03d2DUP5
03d3DUP7
03d4AND
03d5DUP5
03d6MSTORE
03d7ADD
03d8SWAP4
03d9PUSH10x08
03dbSHR
03dcAND
03ddDUP4
03deMSTORE
03dfPUSH10x40
03e1MLOAD
03e2SWAP5
03e3DUP6
03e4MSTORE
03e5MLOAD
03e6AND
03e7PUSH10x20
03e9DUP5
03eaADD
03ebMSTORE
03ecMLOAD
03edAND
03eePUSH10x40
03f0DUP3
03f1ADD
03f2MSTORE
03f3RETURN
03f4JUMPDEST
03f5POP
03f6CALLVALUE
03f7PUSH20x012e
03faJUMPI
03fbPUSH10x60
03fdCALLDATASIZE
03fePUSH10x03
0400NOT
0401ADD
0402SLT
0403PUSH20x012e
0406JUMPI
0407PUSH10x04
0409CALLDATALOAD
040aPUSH10x01
040cPUSH10x01
040ePUSH10x40
0410SHL
0411SUB
0412DUP2
0413GT
0414PUSH20x01c3
0417JUMPI
0418PUSH20x0425
041bSWAP1
041cCALLDATASIZE
041dSWAP1
041ePUSH10x04
0420ADD
0421PUSH20x0f0d
0424JUMP
0425JUMPDEST
0426SWAP1
0427SWAP2
0428PUSH10x24
042aCALLDATALOAD
042bPUSH10x01
042dPUSH10x01
042fPUSH10x40
0431SHL
0432SUB
0433DUP2
0434GT
0435PUSH20x01c3
0438JUMPI
0439PUSH20x0446
043cSWAP1
043dCALLDATASIZE
043eSWAP1
043fPUSH10x04
0441ADD
0442PUSH20x0f0d
0445JUMP
0446JUMPDEST
0447SWAP1
0448SWAP3
0449PUSH10x44
044bCALLDATALOAD
044cSWAP1
044dPUSH10xff
044fDUP3
0450AND
0451DUP3
0452SUB
0453PUSH20x0928
0456JUMPI
0457PUSH10x40
0459MLOAD
045aPUSH40x1de47f3f
045fPUSH10xe3
0461SHL
0462DUP2
0463MSTORE
0464CALLER
0465PUSH10x04
0467DUP3
0468ADD
0469MSTORE
046aSWAP5
046bPUSH320x000000000000000000000000c19d888a2f7ba65a8dcf8d03ad8f1af5cdc66430
048cPUSH10x01
048ePUSH10x01
0490PUSH10xa0
0492SHL
0493SUB
0494AND
0495PUSH10x20
0497DUP8
0498PUSH10x24
049aDUP2
049bDUP5
049cGAS
049dSTATICCALL
049eSWAP7
049fDUP8
04a0ISZERO
04a1PUSH20x08ec
04a4JUMPI
04a5DUP7
04a6SWAP8
04a7PUSH20x08f7
04aaJUMPI
04abJUMPDEST
04acPOP
04adPUSH10x01
04afPUSH10x01
04b1PUSH10xa0
04b3SHL
04b4SUB
04b5DUP8
04b6AND
04b7ISZERO
04b8SWAP1
04b9DUP2
04baISZERO
04bbPUSH20x0857
04beJUMPI
04bfJUMPDEST
04c0POP
04c1PUSH20x0844
04c4JUMPI
04c5PUSH10x01
04c7PUSH10xff
04c9DUP5
04caAND
04cbSUB
04ccPUSH20x082e
04cfJUMPI
04d0DUP4
04d1DUP3
04d2SUB
04d3PUSH20x081c
04d6JUMPI
04d7DUP5
04d8SWAP7
04d9SWAP2
04daSWAP7
04dbPOP
04dcPUSH10x01
04dePUSH10x01
04e0PUSH10x40
04e2SHL
04e3SUB
04e4PUSH20x03e8
04e7TIMESTAMP
04e8DIV
04e9AND
04eaSWAP4
04ebDUP6
04ecSWAP3
04edPUSH10x01
04efPUSH10x01
04f1PUSH10x40
04f3SHL
04f4SUB
04f5PUSH30x03f480
04f9DUP8
04faADD
04fbGT
04fcSWAP4
04fdJUMPDEST
04feDUP10
04ffDUP2
0500LT
0501ISZERO
0502PUSH20x0791
0505JUMPI
0506DUP1
0507PUSH10x05
0509SHL
050aDUP3
050bADD
050cCALLDATALOAD
050dPUSH10x01
050fPUSH10x01
0511PUSH10x40
0513SHL
0514SUB
0515DUP2
0516AND
0517DUP2
0518SUB
0519PUSH20x078d
051cJUMPI
051dPUSH20x0539
0520DUP9
0521PUSH10x01
0523PUSH10x01
0525PUSH10x40
0527SHL
0528SUB
0529PUSH20x0531
052cDUP5
052dPUSH20x11d0
0530JUMP
0531JUMPDEST
0532SWAP4
0533SWAP1
0534SWAP4
0535PUSH20x1081
0538JUMP
0539JUMPDEST
053aAND
053bGT
053cISZERO
053dPUSH20x0771
0540JUMPI
0541DUP7
0542PUSH20x075d
0545JUMPI
0546PUSH10x01
0548PUSH10x01
054aPUSH10x40
054cSHL
054dSUB
054eAND
054fPUSH10x01
0551PUSH10x01
0553PUSH10x40
0555SHL
0556SUB
0557PUSH30x03f480
055bDUP11
055cADD
055dAND
055eDUP2
055fGT
0560PUSH20x0741
0563JUMPI
0564PUSH20x056e
0567DUP4
0568DUP7
0569DUP9
056aPUSH20x10b4
056dJUMP
056eJUMPDEST
056fSWAP1
0570POP
0571ISZERO
0572PUSH20x0725
0575JUMPI
0576DUP9
0577LT
0578ISZERO
0579DUP1
057aPUSH20x06f4
057dJUMPI
057eJUMPDEST
057fPUSH20x06cc
0582JUMPI
0583PUSH20x058d
0586DUP3
0587DUP6
0588DUP8
0589PUSH20x10b4
058cJUMP
058dJUMPDEST
058ePUSH20x0596
0591DUP2
0592PUSH20x1000
0595JUMP
0596JUMPDEST
0597SWAP2
0598PUSH20x05a4
059bPUSH10x40
059dMLOAD
059eSWAP4
059fDUP5
05a0PUSH20x0f6c
05a3JUMP
05a4JUMPDEST
05a5DUP2
05a6DUP4
05a7MSTORE
05a8CALLDATASIZE
05a9DUP3
05aaDUP3
05abADD
05acGT
05adPUSH20x06c8
05b0JUMPI
05b1SWAP1
05b2DUP1
05b3DUP13
05b4SWAP3
05b5PUSH10x20
05b7DUP6
05b8ADD
05b9CALLDATACOPY
05baDUP3
05bbADD
05bcPUSH10x20
05beADD
05bfMSTORE
05c0DUP1
05c1MLOAD
05c2SWAP1
05c3PUSH10x20
05c5ADD
05c6KECCAK256
05c7SWAP1
05c8PUSH10x40
05caMLOAD
05cbPUSH20x05d3
05ceDUP2
05cfPUSH20x0f3d
05d2JUMP
05d3JUMPDEST
05d4DUP3
05d5DUP2
05d6MSTORE
05d7PUSH10x20
05d9DUP2
05daADD
05dbSWAP1
05dcPUSH10xff
05deDUP11
05dfAND
05e0DUP3
05e1MSTORE
05e2PUSH10x40
05e4DUP2
05e5ADD
05e6SWAP1
05e7DUP12
05e8DUP3
05e9MSTORE
05eaDUP14
05ebPUSH10x01
05edPUSH10xa0
05efSHL
05f0PUSH10x01
05f2SWAP1
05f3SUB
05f4AND
05f5DUP14
05f6MSTORE
05f7DUP13
05f8PUSH10x20
05faMSTORE
05fbPUSH10x40
05fdDUP14
05feKECCAK256
05ffPUSH10x01
0601PUSH10x01
0603PUSH10x40
0605SHL
0606SUB
0607DUP6
0608AND
0609PUSH0
060aMSTORE
060bPUSH10x20
060dMSTORE
060ePUSH10x40
0610PUSH0
0611KECCAK256
0612SWAP1
0613MLOAD
0614DUP2
0615SSTORE
0616PUSH10x01
0618ADD
0619SWAP2
061aMLOAD
061bPUSH10xff
061dAND
061eDUP3
061fSLOAD
0620SWAP2
0621MLOAD
0622PUSH10x08
0624SHL
0625PUSH90xffffffffffffffff00
062fAND
0630SWAP2
0631PUSH90xffffffffffffffffff
063bNOT
063cAND
063dOR
063eOR
063fSWAP1
0640SSTORE
0641PUSH20x064b
0644DUP4
0645DUP7
0646DUP9
0647PUSH20x10b4
064aJUMP
064bJUMPDEST
064cDUP1
064dSWAP3
064eSWAP2
064fPUSH10x40
0651MLOAD
0652SWAP5
0653PUSH10xff
0655DUP13
0656AND
0657DUP7
0658MSTORE
0659PUSH10x20
065bDUP7
065cADD
065dMSTORE
065ePUSH10x40
0660DUP6
0661ADD
0662PUSH10x60
0664SWAP1
0665MSTORE
0666DUP2
0667PUSH10x60
0669DUP7
066aADD
066bMSTORE
066cPUSH10x80
066eDUP6
066fADD
0670CALLDATACOPY
0671DUP11
0672DUP3
0673DUP5
0674ADD
0675PUSH10x80
0677ADD
0678MSTORE
0679PUSH10x01
067bPUSH10x01
067dPUSH10x40
067fSHL
0680SUB
0681AND
0682SWAP2
0683DUP1
0684PUSH10x01
0686PUSH10xa0
0688SHL
0689PUSH10x01
068bSWAP1
068cSUB
068dDUP14
068eAND
068fSWAP3
0690PUSH10x1f
0692NOT
0693SWAP1
0694PUSH10x1f
0696ADD
0697AND
0698DUP2
0699ADD
069aSUB
069bPUSH10x80
069dADD
069ePUSH320x7804231c79309bcdd21f79887e007cda403c0dc9c1e1b0a1913111849316a051
06bfSWAP2
06c0LOG3
06c1PUSH10x01
06c3ADD
06c4PUSH20x04fd
06c7JUMP
06c8JUMPDEST
06c9DUP12
06caDUP1
06cbREVERT
06ccJUMPDEST
06cdPUSH40x01cd71d3
06d2PUSH10xe7
06d4SHL
06d5DUP10
06d6MSTORE
06d7PUSH10x01
06d9PUSH10x01
06dbPUSH10xa0
06ddSHL
06deSUB
06dfDUP11
06e0AND
06e1PUSH10x04
06e3MSTORE
06e4PUSH10x01
06e6PUSH10x01
06e8PUSH10x40
06eaSHL
06ebSUB
06ecAND
06edPUSH10x24
06efMSTORE
06f0PUSH10x44
06f2DUP9
06f3REVERT
06f4JUMPDEST
06f5POP
06f6PUSH10x01
06f8PUSH10x01
06faPUSH10xa0
06fcSHL
06fdSUB
06feDUP11
06ffAND
0700DUP10
0701MSTORE
0702PUSH10x20
0704DUP10
0705DUP2
0706MSTORE
0707PUSH10x40
0709DUP1
070aDUP12
070bKECCAK256
070cPUSH10x01
070ePUSH10x01
0710PUSH10x40
0712SHL
0713SUB
0714DUP5
0715AND
0716PUSH0
0717SWAP1
0718DUP2
0719MSTORE
071aSWAP3
071bMSTORE
071cSWAP1
071dKECCAK256
071eSLOAD
071fISZERO
0720ISZERO
0721PUSH20x057e
0724JUMP
0725JUMPDEST
0726PUSH40x4953003d
072bPUSH10xe0
072dSHL
072eDUP11
072fMSTORE
0730PUSH10x01
0732PUSH10x01
0734PUSH10x40
0736SHL
0737SUB
0738DUP3
0739AND
073aPUSH10x04
073cMSTORE
073dPUSH10x24
073fDUP11
0740REVERT
0741JUMPDEST
0742PUSH40x28715901
0747PUSH10xe2
0749SHL
074aDUP11
074bMSTORE
074cPUSH10x01
074ePUSH10x01
0750PUSH10x40
0752SHL
0753SUB
0754DUP3
0755AND
0756PUSH10x04
0758MSTORE
0759PUSH10x24
075bDUP11
075cREVERT
075dJUMPDEST
075ePUSH40x4e487b71
0763PUSH10xe0
0765SHL
0766DUP11
0767MSTORE
0768PUSH10x11
076aPUSH10x04
076cMSTORE
076dPUSH10x24
076fDUP11
0770REVERT
0771JUMPDEST
0772PUSH40x30e7c0c1
0777PUSH10xe1
0779SHL
077aDUP11
077bMSTORE
077cPUSH10x01
077ePUSH10x01
0780PUSH10x40
0782SHL
0783SUB
0784DUP3
0785AND
0786PUSH10x04
0788MSTORE
0789PUSH10x24
078bDUP11
078cREVERT
078dJUMPDEST
078eDUP9
078fDUP1
0790REVERT
0791JUMPDEST
0792DUP8
0793DUP1
0794DUP4
0795DUP12
0796DUP14
0797PUSH320x000000000000000000000000e604b1cf1ae764636263e394c206508b9e9a965e
07b8PUSH10x01
07baPUSH10x01
07bcPUSH10xa0
07beSHL
07bfSUB
07c0AND
07c1DUP1
07c2EXTCODESIZE
07c3ISZERO
07c4PUSH20x0818
07c7JUMPI
07c8PUSH20x07eb
07cbSWAP4
07ccDUP6
07cdDUP1
07ceSWAP5
07cfPUSH10x40
07d1MLOAD
07d2SWAP7
07d3DUP8
07d4SWAP6
07d5DUP7
07d6SWAP5
07d7DUP6
07d8SWAP4
07d9PUSH40x0e1bfc5f
07dePUSH10xe1
07e0SHL
07e1DUP6
07e2MSTORE
07e3PUSH10x04
07e5DUP6
07e6ADD
07e7PUSH20x0f8d
07eaJUMP
07ebJUMPDEST
07ecSUB
07edSWAP3
07eeGAS
07efCALL
07f0DUP1
07f1ISZERO
07f2PUSH20x080d
07f5JUMPI
07f6PUSH20x07fc
07f9JUMPI
07faPOP
07fbRETURN
07fcJUMPDEST
07fdDUP2
07fePUSH20x0806
0801SWAP2
0802PUSH20x0f6c
0805JUMP
0806JUMPDEST
0807PUSH20x012e
080aJUMPI
080bDUP1
080cRETURN
080dJUMPDEST
080ePUSH10x40
0810MLOAD
0811RETURNDATASIZE
0812DUP5
0813DUP3
0814RETURNDATACOPY
0815RETURNDATASIZE
0816SWAP1
0817REVERT
0818JUMPDEST
0819DUP5
081aDUP1
081bREVERT
081cJUMPDEST
081dPUSH10x01
081fPUSH30x1398b9
0823PUSH10xe3
0825SHL
0826SUB
0827NOT
0828DUP6
0829MSTORE
082aPUSH10x04
082cDUP6
082dREVERT
082eJUMPDEST
082fPUSH40xf8e9faab
0834PUSH10xe0
0836SHL
0837DUP6
0838MSTORE
0839PUSH10xff
083bDUP4
083cAND
083dPUSH10x04
083fMSTORE
0840PUSH10x24
0842DUP6
0843REVERT
0844JUMPDEST
0845PUSH40x86ebc01d
084aPUSH10xe0
084cSHL
084dDUP6
084eMSTORE
084fCALLER
0850PUSH10x04
0852MSTORE
0853PUSH10x24
0855DUP6
0856REVERT
0857JUMPDEST
0858PUSH10x40
085aMLOAD
085bPUSH40x2e4bfa51
0860PUSH10xe1
0862SHL
0863DUP2
0864MSTORE
0865PUSH10x01
0867PUSH10x01
0869PUSH10xa0
086bSHL
086cSUB
086dDUP10
086eAND
086fPUSH10x04
0871DUP3
0872ADD
0873MSTORE
0874PUSH320x0000000000000000000000000000000000000000000000000000000000000002
0895PUSH10x24
0897DUP3
0898ADD
0899MSTORE
089aSWAP2
089bPOP
089cPUSH10x20
089eSWAP1
089fDUP3
08a0SWAP1
08a1PUSH10x44
08a3SWAP1
08a4DUP3
08a5SWAP1
08a6GAS
08a7STATICCALL
08a8SWAP1
08a9DUP2
08aaISZERO
08abPUSH20x08ec
08aeJUMPI
08afDUP7
08b0SWAP2
08b1PUSH20x08bd
08b4JUMPI
08b5JUMPDEST
08b6POP
08b7ISZERO
08b8PUSH0
08b9PUSH20x04bf
08bcJUMP
08bdJUMPDEST
08bePUSH20x08df
08c1SWAP2
08c2POP
08c3PUSH10x20
08c5RETURNDATASIZE
08c6PUSH10x20
08c8GT
08c9PUSH20x08e5
08ccJUMPI
08cdJUMPDEST
08cePUSH20x08d7
08d1DUP2
08d2DUP4
08d3PUSH20x0f6c
08d6JUMP
08d7JUMPDEST
08d8DUP2
08d9ADD
08daSWAP1
08dbPUSH20x1069
08deJUMP
08dfJUMPDEST
08e0PUSH0
08e1PUSH20x08b5
08e4JUMP
08e5JUMPDEST
08e6POP
08e7RETURNDATASIZE
08e8PUSH20x08cd
08ebJUMP
08ecJUMPDEST
08edPUSH10x40
08efMLOAD
08f0RETURNDATASIZE
08f1DUP9
08f2DUP3
08f3RETURNDATACOPY
08f4RETURNDATASIZE
08f5SWAP1
08f6REVERT
08f7JUMPDEST
08f8PUSH20x091a
08fbSWAP2
08fcSWAP8
08fdPOP
08fePUSH10x20
0900RETURNDATASIZE
0901PUSH10x20
0903GT
0904PUSH20x0921
0907JUMPI
0908JUMPDEST
0909PUSH20x0912
090cDUP2
090dDUP4
090ePUSH20x0f6c
0911JUMP
0912JUMPDEST
0913DUP2
0914ADD
0915SWAP1
0916PUSH20x104a
0919JUMP
091aJUMPDEST
091bSWAP6
091cPUSH0
091dPUSH20x04ab
0920JUMP
0921JUMPDEST
0922POP
0923RETURNDATASIZE
0924PUSH20x0908
0927JUMP
0928JUMPDEST
0929DUP4
092aDUP1
092bREVERT
092cJUMPDEST
092dPOP
092eCALLVALUE
092fPUSH20x012e
0932JUMPI
0933DUP1
0934PUSH10x03
0936NOT
0937CALLDATASIZE
0938ADD
0939SLT
093aPUSH20x012e
093dJUMPI
093ePUSH10x20
0940PUSH10x40
0942MLOAD
0943PUSH20x0e10
0946DUP2
0947MSTORE
0948RETURN
0949JUMPDEST
094aPOP
094bCALLVALUE
094cPUSH20x012e
094fJUMPI
0950PUSH10x40
0952CALLDATASIZE
0953PUSH10x03
0955NOT
0956ADD
0957SLT
0958PUSH20x012e
095bJUMPI
095cPUSH10x20
095ePUSH20x0968
0961PUSH20x027a
0964PUSH20x0e88
0967JUMP
0968JUMPDEST
0969ISZERO
096aISZERO
096bPUSH10x40
096dMLOAD
096eSWAP1
096fDUP2
0970MSTORE
0971RETURN
0972JUMPDEST
0973POP
0974CALLVALUE
0975PUSH20x012e
0978JUMPI
0979DUP1
097aPUSH10x03
097cNOT
097dCALLDATASIZE
097eADD
097fSLT
0980PUSH20x012e
0983JUMPI
0984PUSH10x20
0986PUSH10x40
0988MLOAD
0989PUSH30x03f480
098dDUP2
098eMSTORE
098fRETURN
0990JUMPDEST
0991POP
0992CALLVALUE
0993PUSH20x012e
0996JUMPI
0997PUSH10xa0
0999CALLDATASIZE
099aPUSH10x03
099cNOT
099dADD
099eSLT
099fPUSH20x012e
09a2JUMPI
09a3PUSH10x04
09a5CALLDATALOAD
09a6PUSH10x04
09a8DUP2
09a9LT
09aaISZERO
09abPUSH20x01c3
09aeJUMPI
09afPUSH20x09b6
09b2PUSH20x0e9e
09b5JUMP
09b6JUMPDEST
09b7SWAP2
09b8PUSH10x64
09baCALLDATALOAD
09bbSWAP2
09bcPUSH10x84
09beCALLDATALOAD
09bfPUSH10x01
09c1PUSH10x01
09c3PUSH10xa0
09c5SHL
09c6SUB
09c7DUP2
09c8AND
09c9SWAP3
09caPUSH10x44
09ccCALLDATALOAD
09cdSWAP3
09ceSWAP2
09cfDUP5
09d0DUP2
09d1SUB
09d2PUSH20x01c3
09d5JUMPI
09d6PUSH20x09dd
09d9PUSH20x135d
09dcJUMP
09ddJUMPDEST
09dePUSH10x40
09e0MLOAD
09e1PUSH40xf5778b03
09e6PUSH10xe0
09e8SHL
09e9DUP2
09eaMSTORE
09ebPUSH10x20
09edDUP2
09eePUSH10x04
09f0DUP2
09f1PUSH320x000000000000000000000000c19d888a2f7ba65a8dcf8d03ad8f1af5cdc66430
0a12PUSH10x01
0a14PUSH10x01
0a16PUSH10xa0
0a18SHL
0a19SUB
0a1aAND
0a1bGAS
0a1cSTATICCALL
0a1dSWAP1
0a1eDUP2
0a1fISZERO
0a20PUSH20x0c72
0a23JUMPI
0a24DUP4
0a25SWAP2
0a26PUSH20x0c53
0a29JUMPI
0a2aJUMPDEST
0a2bPOP
0a2cDUP6
0a2dISZERO
0a2eSWAP1
0a2fDUP2
0a30ISZERO
0a31PUSH20x0c2f
0a34JUMPI
0a35JUMPDEST
0a36POP
0a37PUSH20x0c1b
0a3aJUMPI
0a3bPUSH20x0a45
0a3eDUP5
0a3fDUP9
0a40DUP6
0a41PUSH20x0fe7
0a44JUMP
0a45JUMPDEST
0a46SWAP6
0a47PUSH0
0a48NOT
0a49DUP2
0a4aSUB
0a4bPUSH20x0c16
0a4eJUMPI
0a4fPOP
0a50DUP6
0a51JUMPDEST
0a52DUP1
0a53SWAP7
0a54DUP2
0a55ISZERO
0a56PUSH20x0c07
0a59JUMPI
0a5aDUP1
0a5bDUP3
0a5cGT
0a5dPUSH20x0be2
0a60JUMPI
0a61POP
0a62DUP3
0a63SWAP2
0a64DUP5
0a65PUSH20x0af4
0a68JUMPI
0a69POP
0a6aPOP
0a6bDUP2
0a6cDUP1
0a6dDUP1
0a6eDUP1
0a6fDUP10
0a70DUP10
0a71GAS
0a72CALL
0a73PUSH20x0a7a
0a76PUSH20x101b
0a79JUMP
0a7aJUMPDEST
0a7bPOP
0a7cISZERO
0a7dPUSH20x0ae0
0a80JUMPI
0a81JUMPDEST
0a82PUSH20x0acc
0a85JUMPI
0a86POP
0a87PUSH10x40
0a89DUP1
0a8aMLOAD
0a8bSWAP3
0a8cDUP4
0a8dMSTORE
0a8ePUSH10x20
0a90DUP4
0a91DUP2
0a92ADD
0a93DUP7
0a94SWAP1
0a95MSTORE
0a96SWAP6
0a97PUSH10x01
0a99PUSH10x01
0a9bPUSH10xa0
0a9dSHL
0a9eSUB
0a9fAND
0aa0SWAP3
0aa1PUSH320x7643c83e539cea2f6bf506545392e52cfd5f917e327efbcd0ba28f29c28d042e
0ac2SWAP2
0ac3SWAP1
0ac4LOG4
0ac5PUSH10x40
0ac7MLOAD
0ac8SWAP1
0ac9DUP2
0acaMSTORE
0acbRETURN
0accJUMPDEST
0acdPUSH40x4e487b71
0ad2PUSH10xe0
0ad4SHL
0ad5DUP2
0ad6MSTORE
0ad7PUSH10x21
0ad9PUSH10x04
0adbMSTORE
0adcPUSH10x24
0adeSWAP1
0adfREVERT
0ae0JUMPDEST
0ae1PUSH40x65f4a9ef
0ae6PUSH10xe1
0ae8SHL
0ae9DUP3
0aeaMSTORE
0aebPUSH10x04
0aedDUP3
0aeeSWAP1
0aefMSTORE
0af0PUSH10x24
0af2DUP3
0af3REVERT
0af4JUMPDEST
0af5DUP4
0af6SWAP3
0af7POP
0af8SWAP1
0af9PUSH10x01
0afbDUP6
0afcSUB
0afdPUSH20x0b4e
0b00JUMPI
0b01POP
0b02PUSH10x40
0b04MLOAD
0b05PUSH40xa9059cbb
0b0aPUSH10xe0
0b0cSHL
0b0dPUSH10x20
0b0fDUP3
0b10ADD
0b11MSTORE
0b12PUSH10x01
0b14PUSH10x01
0b16PUSH10xa0
0b18SHL
0b19SUB
0b1aSWAP1
0b1bSWAP2
0b1cAND
0b1dPUSH10x24
0b1fDUP3
0b20ADD
0b21MSTORE
0b22PUSH10x44
0b24DUP2
0b25ADD
0b26DUP8
0b27SWAP1
0b28MSTORE
0b29PUSH20x0b49
0b2cSWAP1
0b2dPUSH20x0b43
0b30DUP2
0b31PUSH10x64
0b33DUP2
0b34ADD
0b35JUMPDEST
0b36SUB
0b37PUSH10x1f
0b39NOT
0b3aDUP2
0b3bADD
0b3cDUP4
0b3dMSTORE
0b3eDUP3
0b3fPUSH20x0f6c
0b42JUMP
0b43JUMPDEST
0b44DUP9
0b45PUSH20x14fb
0b48JUMP
0b49JUMPDEST
0b4aPUSH20x0a81
0b4dJUMP
0b4eJUMPDEST
0b4fSWAP7
0b50SWAP2
0b51POP
0b52POP
0b53DUP2
0b54SWAP6
0b55PUSH10x02
0b57DUP5
0b58EQ
0b59PUSH0
0b5aEQ
0b5bPUSH20x0b97
0b5eJUMPI
0b5fPOP
0b60POP
0b61PUSH10x01
0b63SWAP5
0b64PUSH20x0b49
0b67PUSH10x40
0b69MLOAD
0b6aPUSH40x23b872dd
0b6fPUSH10xe0
0b71SHL
0b72PUSH10x20
0b74DUP3
0b75ADD
0b76MSTORE
0b77ADDRESS
0b78PUSH10x24
0b7aDUP3
0b7bADD
0b7cMSTORE
0b7dDUP7
0b7ePUSH10x44
0b80DUP3
0b81ADD
0b82MSTORE
0b83DUP6
0b84PUSH10x64
0b86DUP3
0b87ADD
0b88MSTORE
0b89PUSH10x64
0b8bDUP2
0b8cMSTORE
0b8dPUSH20x0b43
0b90PUSH10x84
0b92DUP3
0b93PUSH20x0f6c
0b96JUMP
0b97JUMPDEST
0b98PUSH20x0b49
0b9bSWAP1
0b9cPUSH10x40
0b9eSWAP8
0b9fSWAP3
0ba0SWAP8
0ba1MLOAD
0ba2SWAP1
0ba3PUSH40x79212195
0ba8PUSH10xe1
0baaSHL
0babPUSH10x20
0badDUP4
0baeADD
0bafMSTORE
0bb0ADDRESS
0bb1PUSH10x24
0bb3DUP4
0bb4ADD
0bb5MSTORE
0bb6DUP8
0bb7PUSH10x44
0bb9DUP4
0bbaADD
0bbbMSTORE
0bbcDUP7
0bbdPUSH10x64
0bbfDUP4
0bc0ADD
0bc1MSTORE
0bc2PUSH10x84
0bc4DUP3
0bc5ADD
0bc6MSTORE
0bc7PUSH10xa0
0bc9PUSH10xa4
0bcbDUP3
0bccADD
0bcdMSTORE
0bceDUP4
0bcfPUSH10xc4
0bd1DUP3
0bd2ADD
0bd3MSTORE
0bd4PUSH10xc4
0bd6DUP2
0bd7MSTORE
0bd8PUSH20x0b43
0bdbPUSH10xe4
0bddDUP3
0bdePUSH20x0f6c
0be1JUMP
0be2JUMPDEST
0be3PUSH40x21909681
0be8PUSH10xe0
0beaSHL
0bebDUP5
0becMSTORE
0bedPUSH10x01
0befPUSH10x01
0bf1PUSH10xa0
0bf3SHL
0bf4SUB
0bf5DUP10
0bf6AND
0bf7PUSH10x04
0bf9MSTORE
0bfaPUSH10x24
0bfcSWAP2
0bfdSWAP1
0bfeSWAP2
0bffMSTORE
0c00PUSH10x44
0c02MSTORE
0c03PUSH10x64
0c05DUP3
0c06REVERT
0c07JUMPDEST
0c08PUSH40x7c2e506f
0c0dPUSH10xe1
0c0fSHL
0c10DUP5
0c11MSTORE
0c12PUSH10x04
0c14DUP5
0c15REVERT
0c16JUMPDEST
0c17PUSH20x0a51
0c1aJUMP
0c1bJUMPDEST
0c1cPUSH40x15150d4d
0c21PUSH10xe3
0c23SHL
0c24DUP3
0c25MSTORE
0c26PUSH10x04
0c28DUP6
0c29SWAP1
0c2aMSTORE
0c2bPUSH10x24
0c2dDUP3
0c2eREVERT
0c2fJUMPDEST
0c30PUSH10x01
0c32PUSH10x01
0c34PUSH10xa0
0c36SHL
0c37SUB
0c38AND
0c39DUP7
0c3aEQ
0c3bISZERO
0c3cSWAP1
0c3dPOP
0c3eDUP1
0c3fPUSH20x0c49
0c42JUMPI
0c43JUMPDEST
0c44PUSH0
0c45PUSH20x0a35
0c48JUMP
0c49JUMPDEST
0c4aPOP
0c4bCALLER
0c4cDUP6
0c4dEQ
0c4eISZERO
0c4fPUSH20x0c43
0c52JUMP
0c53JUMPDEST
0c54PUSH20x0c6c
0c57SWAP2
0c58POP
0c59PUSH10x20
0c5bRETURNDATASIZE
0c5cPUSH10x20
0c5eGT
0c5fPUSH20x0921
0c62JUMPI
0c63PUSH20x0912
0c66DUP2
0c67DUP4
0c68PUSH20x0f6c
0c6bJUMP
0c6cJUMPDEST
0c6dPUSH0
0c6ePUSH20x0a2a
0c71JUMP
0c72JUMPDEST
0c73PUSH10x40
0c75MLOAD
0c76RETURNDATASIZE
0c77DUP6
0c78DUP3
0c79RETURNDATACOPY
0c7aRETURNDATASIZE
0c7bSWAP1
0c7cREVERT
0c7dJUMPDEST
0c7ePOP
0c7fCALLVALUE
0c80PUSH20x012e
0c83JUMPI
0c84DUP1
0c85PUSH10x03
0c87NOT
0c88CALLDATASIZE
0c89ADD
0c8aSLT
0c8bPUSH20x012e
0c8eJUMPI
0c8fPUSH10x40
0c91MLOAD
0c92PUSH320x000000000000000000000000c19d888a2f7ba65a8dcf8d03ad8f1af5cdc66430
0cb3PUSH10x01
0cb5PUSH10x01
0cb7PUSH10xa0
0cb9SHL
0cbaSUB
0cbbAND
0cbcDUP2
0cbdMSTORE
0cbePUSH10x20
0cc0SWAP1
0cc1RETURN
0cc2JUMPDEST
0cc3POP
0cc4CALLVALUE
0cc5PUSH20x012e
0cc8JUMPI
0cc9PUSH10x60
0ccbCALLDATASIZE
0cccPUSH10x03
0cceNOT
0ccfADD
0cd0SLT
0cd1PUSH20x012e
0cd4JUMPI
0cd5PUSH10x04
0cd7CALLDATALOAD
0cd8SWAP1
0cd9PUSH10x04
0cdbDUP3
0cdcLT
0cddISZERO
0cdePUSH20x012e
0ce1JUMPI
0ce2PUSH10x20
0ce4PUSH20x0288
0ce7DUP4
0ce8PUSH20x0cef
0cebPUSH20x0e9e
0ceeJUMP
0cefJUMPDEST
0cf0PUSH10x44
0cf2CALLDATALOAD
0cf3SWAP2
0cf4PUSH20x0fe7
0cf7JUMP
0cf8JUMPDEST
0cf9POP
0cfaCALLVALUE
0cfbPUSH20x0db4
0cfeJUMPI
0cffPUSH10x40
0d01CALLDATASIZE
0d02PUSH10x03
0d04NOT
0d05ADD
0d06SLT
0d07PUSH20x0db4
0d0aJUMPI
0d0bPUSH20x0d12
0d0ePUSH20x0e88
0d11JUMP
0d12JUMPDEST
0d13PUSH10x24
0d15CALLDATALOAD
0d16PUSH10x01
0d18PUSH10x01
0d1aPUSH10x40
0d1cSHL
0d1dSUB
0d1eDUP2
0d1fGT
0d20PUSH20x0db4
0d23JUMPI
0d24PUSH20x0d31
0d27SWAP1
0d28CALLDATASIZE
0d29SWAP1
0d2aPUSH10x04
0d2cADD
0d2dPUSH20x0f0d
0d30JUMP
0d31JUMPDEST
0d32SWAP1
0d33SWAP2
0d34SWAP1
0d35PUSH320x000000000000000000000000e604b1cf1ae764636263e394c206508b9e9a965e
0d56PUSH10x01
0d58PUSH10x01
0d5aPUSH10xa0
0d5cSHL
0d5dSUB
0d5eAND
0d5fDUP1
0d60EXTCODESIZE
0d61ISZERO
0d62PUSH20x0db4
0d65JUMPI
0d66PUSH20x0d89
0d69SWAP4
0d6aPUSH0
0d6bDUP1
0d6cSWAP5
0d6dPUSH10x40
0d6fMLOAD
0d70SWAP7
0d71DUP8
0d72SWAP6
0d73DUP7
0d74SWAP5
0d75DUP6
0d76SWAP4
0d77PUSH40x0e1bfc5f
0d7cPUSH10xe1
0d7eSHL
0d7fDUP6
0d80MSTORE
0d81PUSH10x04
0d83DUP6
0d84ADD
0d85PUSH20x0f8d
0d88JUMP
0d89JUMPDEST
0d8aSUB
0d8bSWAP3
0d8cGAS
0d8dCALL
0d8eDUP1
0d8fISZERO
0d90PUSH20x0da9
0d93JUMPI
0d94PUSH20x0d9b
0d97JUMPI
0d98POP
0d99DUP1
0d9aRETURN
0d9bJUMPDEST
0d9cPUSH20x0da7
0d9fSWAP2
0da0POP
0da1PUSH0
0da2SWAP1
0da3PUSH20x0f6c
0da6JUMP
0da7JUMPDEST
0da8STOP
0da9JUMPDEST
0daaPUSH10x40
0dacMLOAD
0dadRETURNDATASIZE
0daePUSH0
0dafDUP3
0db0RETURNDATACOPY
0db1RETURNDATASIZE
0db2SWAP1
0db3REVERT
0db4JUMPDEST
0db5PUSH0
0db6DUP1
0db7REVERT
0db8JUMPDEST
0db9CALLVALUE
0dbaPUSH20x0db4
0dbdJUMPI
0dbePUSH0
0dbfCALLDATASIZE
0dc0PUSH10x03
0dc2NOT
0dc3ADD
0dc4SLT
0dc5PUSH20x0db4
0dc8JUMPI
0dc9PUSH10x40
0dcbMLOAD
0dccPUSH320x000000000000000000000000e604b1cf1ae764636263e394c206508b9e9a965e
0dedPUSH10x01
0defPUSH10x01
0df1PUSH10xa0
0df3SHL
0df4SUB
0df5AND
0df6DUP2
0df7MSTORE
0df8PUSH10x20
0dfaSWAP1
0dfbRETURN
0dfcJUMPDEST
0dfdCALLVALUE
0dfePUSH20x0db4
0e01JUMPI
0e02PUSH10x20
0e04CALLDATASIZE
0e05PUSH10x03
0e07NOT
0e08ADD
0e09SLT
0e0aPUSH20x0db4
0e0dJUMPI
0e0ePUSH10x20
0e10PUSH20x0258
0e13PUSH10x01
0e15PUSH10x01
0e17PUSH10x40
0e19SHL
0e1aSUB
0e1bPUSH20x0e22
0e1ePUSH20x0ee1
0e21JUMP
0e22JUMPDEST
0e23AND
0e24DIV
0e25PUSH10x01
0e27PUSH10x01
0e29PUSH10x40
0e2bSHL
0e2cSUB
0e2dPUSH10x40
0e2fMLOAD
0e30SWAP2
0e31AND
0e32DUP2
0e33MSTORE
0e34RETURN
0e35JUMPDEST
0e36CALLVALUE
0e37PUSH20x0db4
0e3aJUMPI
0e3bPUSH10x80
0e3dCALLDATASIZE
0e3ePUSH10x03
0e40NOT
0e41ADD
0e42SLT
0e43PUSH20x0db4
0e46JUMPI
0e47PUSH20x0e4e
0e4aPUSH20x0e88
0e4dJUMP
0e4eJUMPDEST
0e4fPOP
0e50PUSH20x0e57
0e53PUSH20x0e9e
0e56JUMP
0e57JUMPDEST
0e58POP
0e59PUSH10x64
0e5bCALLDATALOAD
0e5cSWAP1
0e5dPUSH10x01
0e5fPUSH10x01
0e61PUSH10x40
0e63SHL
0e64SUB
0e65DUP3
0e66GT
0e67PUSH20x0db4
0e6aJUMPI
0e6bPUSH20x0e7a
0e6ePUSH10x20
0e70SWAP3
0e71CALLDATASIZE
0e72SWAP1
0e73PUSH10x04
0e75ADD
0e76PUSH20x0eb4
0e79JUMP
0e7aJUMPDEST
0e7bPOP
0e7cPOP
0e7dPUSH40x0a85bd01
0e82PUSH10xe1
0e84SHL
0e85DUP2
0e86MSTORE
0e87RETURN
0e88JUMPDEST
0e89PUSH10x04
0e8bCALLDATALOAD
0e8cSWAP1
0e8dPUSH10x01
0e8fPUSH10x01
0e91PUSH10xa0
0e93SHL
0e94SUB
0e95DUP3
0e96AND
0e97DUP3
0e98SUB
0e99PUSH20x0db4
0e9cJUMPI
0e9dJUMP
0e9eJUMPDEST
0e9fPUSH10x24
0ea1CALLDATALOAD
0ea2SWAP1
0ea3PUSH10x01
0ea5PUSH10x01
0ea7PUSH10xa0
0ea9SHL
0eaaSUB
0eabDUP3
0eacAND
0eadDUP3
0eaeSUB
0eafPUSH20x0db4
0eb2JUMPI
0eb3JUMP
0eb4JUMPDEST
0eb5SWAP2
0eb6DUP2
0eb7PUSH10x1f
0eb9DUP5
0ebaADD
0ebbSLT
0ebcISZERO
0ebdPUSH20x0db4
0ec0JUMPI
0ec1DUP3
0ec2CALLDATALOAD
0ec3SWAP2
0ec4PUSH10x01
0ec6PUSH10x01
0ec8PUSH10x40
0ecaSHL
0ecbSUB
0eccDUP4
0ecdGT
0ecePUSH20x0db4
0ed1JUMPI
0ed2PUSH10x20
0ed4DUP4
0ed5DUP2
0ed6DUP7
0ed7ADD
0ed8SWAP6
0ed9ADD
0edaADD
0edbGT
0edcPUSH20x0db4
0edfJUMPI
0ee0JUMP
0ee1JUMPDEST
0ee2PUSH10x04
0ee4CALLDATALOAD
0ee5SWAP1
0ee6PUSH10x01
0ee8PUSH10x01
0eeaPUSH10x40
0eecSHL
0eedSUB
0eeeDUP3
0eefAND
0ef0DUP3
0ef1SUB
0ef2PUSH20x0db4
0ef5JUMPI
0ef6JUMP
0ef7JUMPDEST
0ef8PUSH10x24
0efaCALLDATALOAD
0efbSWAP1
0efcPUSH10x01
0efePUSH10x01
0f00PUSH10x40
0f02SHL
0f03SUB
0f04DUP3
0f05AND
0f06DUP3
0f07SUB
0f08PUSH20x0db4
0f0bJUMPI
0f0cJUMP
0f0dJUMPDEST
0f0eSWAP2
0f0fDUP2
0f10PUSH10x1f
0f12DUP5
0f13ADD
0f14SLT
0f15ISZERO
0f16PUSH20x0db4
0f19JUMPI
0f1aDUP3
0f1bCALLDATALOAD
0f1cSWAP2
0f1dPUSH10x01
0f1fPUSH10x01
0f21PUSH10x40
0f23SHL
0f24SUB
0f25DUP4
0f26GT
0f27PUSH20x0db4
0f2aJUMPI
0f2bPUSH10x20
0f2dDUP1
0f2eDUP6
0f2fADD
0f30SWAP5
0f31DUP5
0f32PUSH10x05
0f34SHL
0f35ADD
0f36ADD
0f37GT
0f38PUSH20x0db4
0f3bJUMPI
0f3cJUMP
0f3dJUMPDEST
0f3ePUSH10x60
0f40DUP2
0f41ADD
0f42SWAP1
0f43DUP2
0f44LT
0f45PUSH10x01
0f47PUSH10x01
0f49PUSH10x40
0f4bSHL
0f4cSUB
0f4dDUP3
0f4eGT
0f4fOR
0f50PUSH20x0f58
0f53JUMPI
0f54PUSH10x40
0f56MSTORE
0f57JUMP
0f58JUMPDEST
0f59PUSH40x4e487b71
0f5ePUSH10xe0
0f60SHL
0f61PUSH0
0f62MSTORE
0f63PUSH10x41
0f65PUSH10x04
0f67MSTORE
0f68PUSH10x24
0f6aPUSH0
0f6bREVERT
0f6cJUMPDEST
0f6dSWAP1
0f6ePUSH10x1f
0f70DUP1
0f71NOT
0f72SWAP2
0f73ADD
0f74AND
0f75DUP2
0f76ADD
0f77SWAP1
0f78DUP2
0f79LT
0f7aPUSH10x01
0f7cPUSH10x01
0f7ePUSH10x40
0f80SHL
0f81SUB
0f82DUP3
0f83GT
0f84OR
0f85PUSH20x0f58
0f88JUMPI
0f89PUSH10x40
0f8bMSTORE
0f8cJUMP
0f8dJUMPDEST
0f8ePUSH10x01
0f90PUSH10x01
0f92PUSH10xa0
0f94SHL
0f95SUB
0f96SWAP1
0f97SWAP2
0f98AND
0f99DUP2
0f9aMSTORE
0f9bPUSH10x40
0f9dPUSH10x20
0f9fDUP3
0fa0ADD
0fa1DUP2
0fa2SWAP1
0fa3MSTORE
0fa4DUP2
0fa5ADD
0fa6DUP4
0fa7SWAP1
0fa8MSTORE
0fa9PUSH10x60
0fabADD
0facSWAP2
0fadPUSH0
0faeSWAP1
0fafJUMPDEST
0fb0DUP1
0fb1DUP3
0fb2LT
0fb3PUSH20x0fbc
0fb6JUMPI
0fb7POP
0fb8POP
0fb9POP
0fbaSWAP1
0fbbJUMP
0fbcJUMPDEST
0fbdSWAP1
0fbeSWAP2
0fbfSWAP3
0fc0DUP4
0fc1CALLDATALOAD
0fc2SWAP1
0fc3PUSH10x01
0fc5PUSH10x01
0fc7PUSH10x40
0fc9SHL
0fcaSUB
0fcbDUP3
0fccAND
0fcdDUP1
0fceSWAP3
0fcfSUB
0fd0PUSH20x0db4
0fd3JUMPI
0fd4PUSH10x20
0fd6DUP2
0fd7PUSH10x01
0fd9SWAP4
0fdaDUP3
0fdbSWAP4
0fdcMSTORE
0fddADD
0fdeSWAP5
0fdfADD
0fe0SWAP3
0fe1ADD
0fe2SWAP1
0fe3PUSH20x0faf
0fe6JUMP
0fe7JUMPDEST
0fe8SWAP1
0fe9PUSH20x0ff2
0fecSWAP3
0fedSWAP2
0feePUSH20x1206
0ff1JUMP
0ff2JUMPDEST
0ff3DUP1
0ff4ISZERO
0ff5PUSH20x0ffb
0ff8JUMPI
0ff9SWAP1
0ffaJUMP
0ffbJUMPDEST
0ffcPOP
0ffdPUSH0
0ffeSWAP1
0fffJUMP
1000JUMPDEST
1001PUSH10x01
1003PUSH10x01
1005PUSH10x40
1007SHL
1008SUB
1009DUP2
100aGT
100bPUSH20x0f58
100eJUMPI
100fPUSH10x1f
1011ADD
1012PUSH10x1f
1014NOT
1015AND
1016PUSH10x20
1018ADD
1019SWAP1
101aJUMP
101bJUMPDEST
101cRETURNDATASIZE
101dISZERO
101ePUSH20x1045
1021JUMPI
1022RETURNDATASIZE
1023SWAP1
1024PUSH20x102c
1027DUP3
1028PUSH20x1000
102bJUMP
102cJUMPDEST
102dSWAP2
102ePUSH20x103a
1031PUSH10x40
1033MLOAD
1034SWAP4
1035DUP5
1036PUSH20x0f6c
1039JUMP
103aJUMPDEST
103bDUP3
103cMSTORE
103dRETURNDATASIZE
103ePUSH0
103fPUSH10x20
1041DUP5
1042ADD
1043RETURNDATACOPY
1044JUMP
1045JUMPDEST
1046PUSH10x60
1048SWAP1
1049JUMP
104aJUMPDEST
104bSWAP1
104cDUP2
104dPUSH10x20
104fSWAP2
1050SUB
1051SLT
1052PUSH20x0db4
1055JUMPI
1056MLOAD
1057PUSH10x01
1059PUSH10x01
105bPUSH10xa0
105dSHL
105eSUB
105fDUP2
1060AND
1061DUP2
1062SUB
1063PUSH20x0db4
1066JUMPI
1067SWAP1
1068JUMP
1069JUMPDEST
106aSWAP1
106bDUP2
106cPUSH10x20
106eSWAP2
106fSUB
1070SLT
1071PUSH20x0db4
1074JUMPI
1075MLOAD
1076DUP1
1077ISZERO
1078ISZERO
1079DUP2
107aSUB
107bPUSH20x0db4
107eJUMPI
107fSWAP1
1080JUMP
1081JUMPDEST
1082PUSH10x01
1084PUSH10x01
1086PUSH10x40
1088SHL
1089SUB
108aPUSH20x0e10
108dSWAP2
108eAND
108fADD
1090SWAP1
1091PUSH10x01
1093PUSH10x01
1095PUSH10x40
1097SHL
1098SUB
1099DUP3
109aGT
109bPUSH20x10a0
109eJUMPI
109fJUMP
10a0JUMPDEST
10a1PUSH40x4e487b71
10a6PUSH10xe0
10a8SHL
10a9PUSH0
10aaMSTORE
10abPUSH10x11
10adPUSH10x04
10afMSTORE
10b0PUSH10x24
10b2PUSH0
10b3REVERT
10b4JUMPDEST
10b5SWAP2
10b6SWAP1
10b7DUP2
10b8LT
10b9ISZERO
10baPUSH20x10f5
10bdJUMPI
10bePUSH10x05
10c0SHL
10c1DUP2
10c2ADD
10c3CALLDATALOAD
10c4SWAP1
10c5PUSH10x1e
10c7NOT
10c8DUP2
10c9CALLDATASIZE
10caSUB
10cbADD
10ccDUP3
10cdSLT
10ceISZERO
10cfPUSH20x0db4
10d2JUMPI
10d3ADD
10d4SWAP1
10d5DUP2
10d6CALLDATALOAD
10d7SWAP2
10d8PUSH10x01
10daPUSH10x01
10dcPUSH10x40
10deSHL
10dfSUB
10e0DUP4
10e1GT
10e2PUSH20x0db4
10e5JUMPI
10e6PUSH10x20
10e8ADD
10e9DUP3
10eaCALLDATASIZE
10ebSUB
10ecDUP2
10edSGT
10eePUSH20x0db4
10f1JUMPI
10f2SWAP2
10f3SWAP1
10f4JUMP
10f5JUMPDEST
10f6PUSH40x4e487b71
10fbPUSH10xe0
10fdSHL
10fePUSH0
10ffMSTORE
1100PUSH10x32
1102PUSH10x04
1104MSTORE
1105PUSH10x24
1107PUSH0
1108REVERT
1109JUMPDEST
110aPUSH10x01
110cDUP1
110dPUSH10xa0
110fSHL
1110SUB
1111AND
1112SWAP1
1113DUP2
1114PUSH0
1115MSTORE
1116PUSH0
1117PUSH10x20
1119MSTORE
111aPUSH10x40
111cPUSH0
111dKECCAK256
111ePUSH10x01
1120PUSH10x01
1122PUSH10x40
1124SHL
1125SUB
1126DUP3
1127AND
1128PUSH0
1129MSTORE
112aPUSH10x20
112cMSTORE
112dPUSH10x40
112fPUSH0
1130KECCAK256
1131DUP1
1132SLOAD
1133SWAP1
1134DUP2
1135ISZERO
1136PUSH20x11c8
1139JUMPI
113aPUSH20x1142
113dDUP4
113ePUSH20x11d0
1141JUMP
1142JUMPDEST
1143SWAP1
1144POP
1145PUSH10x01
1147PUSH10x01
1149PUSH10x40
114bSHL
114cSUB
114dPUSH20x115c
1150DUP2
1151PUSH20x03e8
1154TIMESTAMP
1155DIV
1156AND
1157SWAP3
1158PUSH20x1081
115bJUMP
115cJUMPDEST
115dAND
115eLT
115fPUSH20x11c8
1162JUMPI
1163PUSH10x01
1165PUSH10xff
1167SWAP2
1168ADD
1169SLOAD
116aAND
116bPUSH10x01
116dPUSH10x01
116fPUSH10x40
1171SHL
1172SUB
1173PUSH10x40
1175MLOAD
1176SWAP4
1177PUSH10x20
1179DUP6
117aADD
117bSWAP6
117cPUSH320x950ffa6ffe5372ffbba1d3c001d1b4dde1b251b8f53aa8d8bb11cc9691ac6c17
119dDUP8
119eMSTORE
119fPUSH10x40
11a1DUP7
11a2ADD
11a3MSTORE
11a4AND
11a5PUSH10x60
11a7DUP5
11a8ADD
11a9MSTORE
11aaPUSH10x80
11acDUP4
11adADD
11aeMSTORE
11afPUSH10xa0
11b1DUP3
11b2ADD
11b3MSTORE
11b4PUSH10xa0
11b6DUP2
11b7MSTORE
11b8PUSH20x11c2
11bbPUSH10xc0
11bdDUP3
11bePUSH20x0f6c
11c1JUMP
11c2JUMPDEST
11c3MLOAD
11c4SWAP1
11c5KECCAK256
11c6SWAP1
11c7JUMP
11c8JUMPDEST
11c9POP
11caPOP
11cbPOP
11ccPOP
11cdPUSH0
11ceSWAP1
11cfJUMP
11d0JUMPDEST
11d1PUSH10x01
11d3PUSH10x01
11d5PUSH10x40
11d7SHL
11d8SUB
11d9PUSH20x0258
11dcSWAP2
11ddAND
11deMUL
11dfSWAP1
11e0PUSH10x01
11e2PUSH10x01
11e4PUSH10x40
11e6SHL
11e7SUB
11e8DUP3
11e9AND
11eaSWAP2
11ebDUP3
11ecSUB
11edPUSH20x10a0
11f0JUMPI
11f1PUSH20x0258
11f4DUP3
11f5ADD
11f6PUSH10x01
11f8PUSH10x01
11faPUSH10x40
11fcSHL
11fdSUB
11feDUP2
11ffGT
1200PUSH20x10a0
1203JUMPI
1204SWAP1
1205JUMP
1206JUMPDEST
1207SWAP1
1208PUSH10x04
120aDUP3
120bLT
120cISZERO
120dPUSH20x1349
1210JUMPI
1211DUP2
1212ISZERO
1213PUSH20x1342
1216JUMPI
1217PUSH0
1218SWAP3
1219DUP4
121aSWAP3
121bPUSH10x01
121dDUP2
121eEQ
121fPUSH20x1319
1222JUMPI
1223PUSH10x02
1225EQ
1226PUSH20x1291
1229JUMPI
122aPUSH10x40
122cMLOAD
122dPUSH30x7eeac7
1231PUSH10xe1
1233SHL
1234PUSH10x20
1236DUP3
1237ADD
1238SWAP1
1239DUP2
123aMSTORE
123bADDRESS
123cPUSH10x24
123eDUP4
123fADD
1240MSTORE
1241PUSH10x44
1243DUP3
1244ADD
1245SWAP3
1246SWAP1
1247SWAP3
1248MSTORE
1249PUSH20x1255
124cDUP2
124dPUSH10x64
124fDUP2
1250ADD
1251PUSH20x0b35
1254JUMP
1255JUMPDEST
1256MLOAD
1257SWAP2
1258GAS
1259STATICCALL
125aPUSH20x1261
125dPUSH20x101b
1260JUMP
1261JUMPDEST
1262SWAP1
1263DUP1
1264PUSH20x1285
1267JUMPI
1268JUMPDEST
1269ISZERO
126aPUSH20x0ffb
126dJUMPI
126ePUSH10x20
1270DUP2
1271MLOAD
1272SWAP2
1273DUP2
1274DUP1
1275DUP3
1276ADD
1277SWAP4
1278DUP5
1279SWAP3
127aADD
127bADD
127cSUB
127dSLT
127ePUSH20x0db4
1281JUMPI
1282MLOAD
1283SWAP1
1284JUMP
1285JUMPDEST
1286POP
1287PUSH10x20
1289DUP2
128aMLOAD
128bLT
128cISZERO
128dPUSH20x1268
1290JUMP
1291JUMPDEST
1292PUSH10x40
1294MLOAD
1295PUSH10x20
1297DUP2
1298ADD
1299SWAP2
129aPUSH40x31a9108f
129fPUSH10xe1
12a1SHL
12a2DUP4
12a3MSTORE
12a4PUSH10x24
12a6DUP3
12a7ADD
12a8MSTORE
12a9PUSH10x24
12abDUP2
12acMSTORE
12adPUSH20x12b7
12b0PUSH10x44
12b2DUP3
12b3PUSH20x0f6c
12b6JUMP
12b7JUMPDEST
12b8MLOAD
12b9SWAP2
12baGAS
12bbSTATICCALL
12bcPUSH20x12c3
12bfPUSH20x101b
12c2JUMP
12c3JUMPDEST
12c4DUP2
12c5PUSH20x130b
12c8JUMPI
12c9JUMPDEST
12caDUP2
12cbPUSH20x12de
12ceJUMPI
12cfJUMPDEST
12d0POP
12d1ISZERO
12d2PUSH20x12da
12d5JUMPI
12d6PUSH10x01
12d8SWAP1
12d9JUMP
12daJUMPDEST
12dbPUSH0
12dcSWAP1
12ddJUMP
12deJUMPDEST
12dfSWAP1
12e0POP
12e1PUSH10x20
12e3DUP2
12e4DUP1
12e5MLOAD
12e6DUP2
12e7ADD
12e8SUB
12e9SLT
12eaPUSH20x0db4
12edJUMPI
12eePUSH10x20
12f0ADD
12f1MLOAD
12f2PUSH10x01
12f4PUSH10x01
12f6PUSH10xa0
12f8SHL
12f9SUB
12faDUP2
12fbAND
12fcSWAP1
12fdDUP2
12feSWAP1
12ffSUB
1300PUSH20x0db4
1303JUMPI
1304ADDRESS
1305EQ
1306PUSH0
1307PUSH20x12cf
130aJUMP
130bJUMPDEST
130cSWAP1
130dPOP
130ePUSH10x20
1310DUP2
1311MLOAD
1312LT
1313ISZERO
1314SWAP1
1315PUSH20x12c9
1318JUMP
1319JUMPDEST
131aPOP
131bPOP
131cPUSH10x40
131eMLOAD
131fPUSH10x20
1321DUP2
1322ADD
1323SWAP1
1324PUSH40x70a08231
1329PUSH10xe0
132bSHL
132cDUP3
132dMSTORE
132eADDRESS
132fPUSH10x24
1331DUP3
1332ADD
1333MSTORE
1334PUSH10x24
1336DUP2
1337MSTORE
1338PUSH20x1255
133bPUSH10x44
133dDUP3
133ePUSH20x0f6c
1341JUMP
1342JUMPDEST
1343POP
1344POP
1345POP
1346SELFBALANCE
1347SWAP1
1348JUMP
1349JUMPDEST
134aPUSH40x4e487b71
134fPUSH10xe0
1351SHL
1352PUSH0
1353MSTORE
1354PUSH10x21
1356PUSH10x04
1358MSTORE
1359PUSH10x24
135bPUSH0
135cREVERT
135dJUMPDEST
135ePUSH10x40
1360MLOAD
1361PUSH40x28305db1
1366PUSH10xe2
1368SHL
1369DUP2
136aMSTORE
136bPUSH320x000000000000000000000000c19d888a2f7ba65a8dcf8d03ad8f1af5cdc66430
138cPUSH10x01
138ePUSH10x01
1390PUSH10xa0
1392SHL
1393SUB
1394AND
1395SWAP1
1396PUSH10x20
1398DUP2
1399PUSH10x04
139bDUP2
139cDUP6
139dGAS
139eSTATICCALL
139fSWAP1
13a0DUP2
13a1ISZERO
13a2PUSH20x0da9
13a5JUMPI
13a6PUSH0
13a7SWAP2
13a8PUSH20x14dc
13abJUMPI
13acJUMPDEST
13adPOP
13aeISZERO
13afDUP1
13b0PUSH20x1487
13b3JUMPI
13b4JUMPDEST
13b5PUSH20x1484
13b8JUMPI
13b9PUSH10x40
13bbMLOAD
13bcPUSH40xe14c465b
13c1PUSH10xe0
13c3SHL
13c4DUP2
13c5MSTORE
13c6PUSH10x20
13c8DUP2
13c9PUSH10x04
13cbDUP2
13ccDUP6
13cdGAS
13ceSTATICCALL
13cfSWAP1
13d0DUP2
13d1ISZERO
13d2PUSH20x0da9
13d5JUMPI
13d6PUSH0
13d7SWAP2
13d8PUSH20x1450
13dbJUMPI
13dcJUMPDEST
13ddPOP
13dePUSH10x40
13e0MLOAD
13e1PUSH40x2e4bfa51
13e6PUSH10xe1
13e8SHL
13e9DUP2
13eaMSTORE
13ebCALLER
13ecPUSH10x04
13eeDUP3
13efADD
13f0MSTORE
13f1PUSH10x24
13f3DUP2
13f4ADD
13f5SWAP2
13f6SWAP1
13f7SWAP2
13f8MSTORE
13f9SWAP1
13faPUSH10x20
13fcSWAP1
13fdDUP3
13feSWAP1
13ffDUP2
1400DUP1
1401PUSH10x44
1403DUP2
1404ADD
1405JUMPDEST
1406SUB
1407SWAP2
1408GAS
1409STATICCALL
140aSWAP1
140bDUP2
140cISZERO
140dPUSH20x0da9
1410JUMPI
1411PUSH0
1412SWAP2
1413PUSH20x1431
1416JUMPI
1417JUMPDEST
1418POP
1419PUSH20x142f
141cJUMPI
141dPUSH40x321cbc09
1422PUSH10xe2
1424SHL
1425PUSH0
1426MSTORE
1427CALLER
1428PUSH10x04
142aMSTORE
142bPUSH10x24
142dPUSH0
142eREVERT
142fJUMPDEST
1430JUMP
1431JUMPDEST
1432PUSH20x144a
1435SWAP2
1436POP
1437PUSH10x20
1439RETURNDATASIZE
143aPUSH10x20
143cGT
143dPUSH20x08e5
1440JUMPI
1441PUSH20x08d7
1444DUP2
1445DUP4
1446PUSH20x0f6c
1449JUMP
144aJUMPDEST
144bPUSH0
144cPUSH20x1417
144fJUMP
1450JUMPDEST
1451SWAP1
1452POP
1453PUSH10x20
1455DUP2
1456RETURNDATASIZE
1457PUSH10x20
1459GT
145aPUSH20x147c
145dJUMPI
145eJUMPDEST
145fDUP2
1460PUSH20x146b
1463PUSH10x20
1465SWAP4
1466DUP4
1467PUSH20x0f6c
146aJUMP
146bJUMPDEST
146cDUP2
146dADD
146eSUB
146fSLT
1470PUSH20x0db4
1473JUMPI
1474MLOAD
1475PUSH20x1405
1478PUSH20x13dc
147bJUMP
147cJUMPDEST
147dRETURNDATASIZE
147eSWAP2
147fPOP
1480PUSH20x145e
1483JUMP
1484JUMPDEST
1485POP
1486JUMP
1487JUMPDEST
1488POP
1489PUSH10x40
148bMLOAD
148cPUSH40xf5778b03
1491PUSH10xe0
1493SHL
1494DUP2
1495MSTORE
1496PUSH10x20
1498DUP2
1499PUSH10x04
149bDUP2
149cDUP6
149dGAS
149eSTATICCALL
149fSWAP1
14a0DUP2
14a1ISZERO
14a2PUSH20x0da9
14a5JUMPI
14a6PUSH0
14a7SWAP2
14a8PUSH20x14bd
14abJUMPI
14acJUMPDEST
14adPOP
14aePUSH10x01
14b0PUSH10x01
14b2PUSH10xa0
14b4SHL
14b5SUB
14b6AND
14b7CALLER
14b8EQ
14b9PUSH20x13b4
14bcJUMP
14bdJUMPDEST
14bePUSH20x14d6
14c1SWAP2
14c2POP
14c3PUSH10x20
14c5RETURNDATASIZE
14c6PUSH10x20
14c8GT
14c9PUSH20x0921
14ccJUMPI
14cdPUSH20x0912
14d0DUP2
14d1DUP4
14d2PUSH20x0f6c
14d5JUMP
14d6JUMPDEST
14d7PUSH0
14d8PUSH20x14ac
14dbJUMP
14dcJUMPDEST
14ddPUSH20x14f5
14e0SWAP2
14e1POP
14e2PUSH10x20
14e4RETURNDATASIZE
14e5PUSH10x20
14e7GT
14e8PUSH20x08e5
14ebJUMPI
14ecPUSH20x08d7
14efDUP2
14f0DUP4
14f1PUSH20x0f6c
14f4JUMP
14f5JUMPDEST
14f6PUSH0
14f7PUSH20x13ac
14faJUMP
14fbJUMPDEST
14fcSWAP1
14fdDUP2
14feEXTCODESIZE
14ffISZERO
1500PUSH20x157a
1503JUMPI
1504PUSH0
1505DUP2
1506PUSH10x20
1508DUP3
1509SWAP4
150aMLOAD
150bSWAP2
150cADD
150dDUP3
150eDUP6
150fGAS
1510CALL
1511PUSH20x1518
1514PUSH20x101b
1517JUMP
1518JUMPDEST
1519SWAP1
151aISZERO
151bSWAP1
151cDUP2
151dISZERO
151ePUSH20x154a
1521JUMPI
1522JUMPDEST
1523POP
1524PUSH20x152a
1527JUMPI
1528POP
1529JUMP
152aJUMPDEST
152bPUSH40x65f4a9ef
1530PUSH10xe1
1532SHL
1533PUSH0
1534SWAP1
1535DUP2
1536MSTORE
1537PUSH10x01
1539PUSH10x01
153bPUSH10xa0
153dSHL
153eSUB
153fSWAP2
1540SWAP1
1541SWAP2
1542AND
1543PUSH10x04
1545MSTORE
1546PUSH10x24
1548SWAP1
1549REVERT
154aJUMPDEST
154bDUP1
154cMLOAD
154dDUP1
154eISZERO
154fISZERO
1550SWAP3
1551POP
1552DUP3
1553PUSH20x155f
1556JUMPI
1557JUMPDEST
1558POP
1559POP
155aPUSH0
155bPUSH20x1522
155eJUMP
155fJUMPDEST
1560PUSH20x1572
1563SWAP3
1564POP
1565PUSH10x20
1567DUP1
1568SWAP2
1569DUP4
156aADD
156bADD
156cSWAP2
156dADD
156ePUSH20x1069
1571JUMP
1572JUMPDEST
1573ISZERO
1574PUSH0
1575DUP1
1576PUSH20x1557
1579JUMP
157aJUMPDEST
157bPOP
157cPUSH40x65f4a9ef
1581PUSH10xe1
1583SHL
1584PUSH0
1585SWAP1
1586DUP2
1587MSTORE
1588PUSH10x01
158aPUSH10x01
158cPUSH10xa0
158eSHL
158fSUB
1590SWAP2
1591SWAP1
1592SWAP2
1593AND
1594PUSH10x04
1596MSTORE
1597PUSH10x24
1599SWAP1
159aREVERT