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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "src/layer1/based/TaikoL1.sol";
import "../addrcache/RollupAddressCache.sol";
import "../reentrylock/LibFasterReentryLock.sol";

/// @title MainnetTaikoL1
/// @dev This contract shall be deployed to replace its parent contract on Ethereum for Taiko
/// mainnet to reduce gas cost.
/// @notice See the documentation in {TaikoL1}.
/// @custom:security-contact [email protected]
contract MainnetTaikoL1 is TaikoL1, RollupAddressCache {
    /// @inheritdoc ITaikoL1
    function getConfig() public pure override returns (TaikoData.Config memory) {
        // All hard-coded configurations:
        // - treasury: the actual TaikoL2 address.
        // - anchorGasLimit: 250_000 (based on internal devnet, its ~220_000
        // after 256 L2 blocks)
        return TaikoData.Config({
            chainId: LibNetwork.TAIKO_MAINNET,
            // Ring buffers are being reused on the mainnet, therefore the following two
            // configuration values must NEVER be changed!!!
            blockMaxProposals: 324_000, // DO NOT CHANGE!!!
            blockRingBufferSize: 360_000, // DO NOT CHANGE!!!
            maxBlocksToVerify: 16,
            blockMaxGasLimit: 240_000_000,
            livenessBond: 125e18, // 125 Taiko token
            stateRootSyncInternal: 16,
            maxAnchorHeightOffset: 64,
            baseFeeConfig: LibSharedData.BaseFeeConfig({
                adjustmentQuotient: 8,
                sharingPctg: 75,
                gasIssuancePerSecond: 5_000_000,
                minGasExcess: 1_340_000_000, // correspond to 0.008847185 gwei basefee
                maxGasIssuancePerBlock: 600_000_000 // two minutes: 5_000_000 * 120
             }),
            ontakeForkHeight: 538_304
        });
    }

    function _getAddress(uint64 _chainId, bytes32 _name) internal view override returns (address) {
        return getAddress(_chainId, _name, super._getAddress);
    }

    function _storeReentryLock(uint8 _reentry) internal override {
        LibFasterReentryLock.storeReentryLock(_reentry);
    }

    function _loadReentryLock() internal view override returns (uint8) {
        return LibFasterReentryLock.loadReentryLock();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "src/shared/common/EssentialContract.sol";
import "./LibData.sol";
import "./LibProposing.sol";
import "./LibProving.sol";
import "./LibVerifying.sol";
import "./TaikoEvents.sol";
import "./ITaikoL1.sol";

/// @title TaikoL1
/// @notice This contract serves as the "base layer contract" of the Taiko protocol, providing
/// functionalities for proposing, proving, and verifying blocks. The term "base layer contract"
/// means that although this is usually deployed on L1, it can also be deployed on L2s to create
/// L3 "inception layers". The contract also handles the deposit and withdrawal of Taiko tokens
/// and Ether. Additionally, this contract doesn't hold any Ether. Ether deposited to L2 are held
/// by the Bridge contract.
/// @dev Labeled in AddressResolver as "taiko"
/// @custom:security-contact [email protected]
contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents {
    /// @notice The TaikoL1 state.
    TaikoData.State public state;

    uint256[50] private __gap;

    error L1_FORK_ERROR();
    error L1_INVALID_PARAMS();

    modifier whenProvingNotPaused() {
        if (state.slotB.provingPaused) revert LibProving.L1_PROVING_PAUSED();
        _;
    }

    modifier emitEventForClient() {
        _;
        emit StateVariablesUpdated(state.slotB);
    }

    /// @notice Initializes the contract.
    /// @param _owner The owner of this contract. msg.sender will be used if this value is zero.
    /// @param _rollupAddressManager The address of the {AddressManager} contract.
    /// @param _genesisBlockHash The block hash of the genesis block.
    /// @param _toPause true to pause the contract by default.
    function init(
        address _owner,
        address _rollupAddressManager,
        bytes32 _genesisBlockHash,
        bool _toPause
    )
        external
        initializer
    {
        __Essential_init(_owner, _rollupAddressManager);
        LibUtils.init(state, getConfig(), _genesisBlockHash);
        if (_toPause) _pause();
    }

    /// @notice This function shall be called by previously deployed contracts.
    function init2() external onlyOwner reinitializer(2) {
        // reset some previously used slots for future reuse
        state.slotB.__reservedB1 = 0;
        state.slotB.__reservedB2 = 0;
        state.slotB.__reservedB3 = 0;
        state.__reserve1 = 0;
    }

    /// @inheritdoc ITaikoL1
    function proposeBlock(
        bytes calldata _params,
        bytes calldata _txList
    )
        external
        payable
        whenNotPaused
        nonReentrant
        emitEventForClient
        returns (TaikoData.BlockMetadata memory meta_, TaikoData.EthDeposit[] memory deposits_)
    {
        TaikoData.Config memory config = getConfig();

        TaikoData.BlockMetadataV2 memory metaV2;
        (meta_, metaV2) = LibProposing.proposeBlock(state, config, this, _params, _txList);
        if (metaV2.id >= config.ontakeForkHeight) revert L1_FORK_ERROR();
        deposits_ = new TaikoData.EthDeposit[](0);
    }

    function proposeBlockV2(
        bytes calldata _params,
        bytes calldata _txList
    )
        external
        whenNotPaused
        nonReentrant
        emitEventForClient
        returns (TaikoData.BlockMetadataV2 memory meta_)
    {
        TaikoData.Config memory config = getConfig();
        (, meta_) = LibProposing.proposeBlock(state, config, this, _params, _txList);
        if (meta_.id < config.ontakeForkHeight) revert L1_FORK_ERROR();
    }

    /// @inheritdoc ITaikoL1
    function proposeBlocksV2(
        bytes[] calldata _paramsArr,
        bytes[] calldata _txListArr
    )
        external
        whenNotPaused
        nonReentrant
        emitEventForClient
        returns (TaikoData.BlockMetadataV2[] memory metaArr_)
    {
        TaikoData.Config memory config = getConfig();
        (, metaArr_) = LibProposing.proposeBlocks(state, config, this, _paramsArr, _txListArr);
        for (uint256 i; i < metaArr_.length; ++i) {
            if (metaArr_[i].id < config.ontakeForkHeight) revert L1_FORK_ERROR();
        }
    }

    /// @inheritdoc ITaikoL1
    function proveBlock(
        uint64 _blockId,
        bytes calldata _input
    )
        external
        whenNotPaused
        whenProvingNotPaused
        nonReentrant
        emitEventForClient
    {
        LibProving.proveBlock(state, getConfig(), this, _blockId, _input);
    }

    /// @inheritdoc ITaikoL1
    function proveBlocks(
        uint64[] calldata _blockIds,
        bytes[] calldata _inputs,
        bytes calldata _batchProof
    )
        external
        whenNotPaused
        whenProvingNotPaused
        nonReentrant
        emitEventForClient
    {
        LibProving.proveBlocks(state, getConfig(), this, _blockIds, _inputs, _batchProof);
    }

    /// @inheritdoc ITaikoL1
    function verifyBlocks(uint64 _maxBlocksToVerify)
        external
        whenNotPaused
        whenProvingNotPaused
        nonReentrant
        emitEventForClient
    {
        LibVerifying.verifyBlocks(state, getConfig(), this, _maxBlocksToVerify);
    }

    /// @inheritdoc ITaikoL1
    function pauseProving(bool _pause) external {
        _authorizePause(msg.sender, _pause);
        LibProving.pauseProving(state, _pause);
    }

    /// @inheritdoc ITaikoL1
    function depositBond(uint256 _amount) external whenNotPaused {
        LibBonds.depositBond(state, this, _amount);
    }

    /// @inheritdoc ITaikoL1
    function withdrawBond(uint256 _amount) external whenNotPaused {
        LibBonds.withdrawBond(state, this, _amount);
    }

    /// @notice Gets the current bond balance of a given address.
    /// @return The current bond balance.
    function bondBalanceOf(address _user) external view returns (uint256) {
        return LibBonds.bondBalanceOf(state, _user);
    }

    /// @inheritdoc ITaikoL1
    function getVerifiedBlockProver(uint64 _blockId) external view returns (address prover_) {
        return LibVerifying.getVerifiedBlockProver(state, getConfig(), _blockId);
    }

    /// @notice Gets the details of a block.
    /// @param _blockId Index of the block.
    /// @return blk_ The block.
    function getBlock(uint64 _blockId) external view returns (TaikoData.Block memory blk_) {
        (TaikoData.BlockV2 memory blk,) = LibUtils.getBlock(state, getConfig(), _blockId);
        blk_ = LibData.blockV2toV1(blk);
    }

    /// @inheritdoc ITaikoL1
    function getBlockV2(uint64 _blockId) external view returns (TaikoData.BlockV2 memory blk_) {
        (blk_,) = LibUtils.getBlock(state, getConfig(), _blockId);
    }

    /// @notice This function will revert if the transition is not found. This function will revert
    /// if the transition is not found.
    /// @param _blockId Index of the block.
    /// @param _parentHash Parent hash of the block.
    /// @return The state transition data of the block.
    function getTransition(
        uint64 _blockId,
        bytes32 _parentHash
    )
        external
        view
        returns (TaikoData.TransitionState memory)
    {
        return LibUtils.getTransition(state, getConfig(), _blockId, _parentHash);
    }

    /// @notice Gets the state transitions for a batch of block. For transition that doesn't exist,
    /// the corresponding transition state will be empty.
    /// @param _blockIds Index of the blocks.
    /// @param _parentHashes Parent hashes of the blocks.
    /// @return The state transition array of the blocks.
    function getTransitions(
        uint64[] calldata _blockIds,
        bytes32[] calldata _parentHashes
    )
        external
        view
        returns (TaikoData.TransitionState[] memory)
    {
        return LibUtils.getTransitions(state, getConfig(), _blockIds, _parentHashes);
    }

    /// @inheritdoc ITaikoL1
    function getTransition(
        uint64 _blockId,
        uint32 _tid
    )
        external
        view
        returns (TaikoData.TransitionState memory)
    {
        return LibUtils.getTransition(state, getConfig(), _blockId, _tid);
    }

    /// @notice Returns information about the last verified block.
    /// @return blockId_ The last verified block's ID.
    /// @return blockHash_ The last verified block's blockHash.
    /// @return stateRoot_ The last verified block's stateRoot.
    /// @return verifiedAt_ The timestamp this block is proven at.
    function getLastVerifiedBlock()
        external
        view
        returns (uint64 blockId_, bytes32 blockHash_, bytes32 stateRoot_, uint64 verifiedAt_)
    {
        blockId_ = state.slotB.lastVerifiedBlockId;
        (blockHash_, stateRoot_, verifiedAt_) = LibUtils.getBlockInfo(state, getConfig(), blockId_);
    }

    /// @notice Returns information about the last synchronized block.
    /// @return blockId_ The last verified block's ID.
    /// @return blockHash_ The last verified block's blockHash.
    /// @return stateRoot_ The last verified block's stateRoot.
    /// @return verifiedAt_ The timestamp this block is proven at.
    function getLastSyncedBlock()
        external
        view
        returns (uint64 blockId_, bytes32 blockHash_, bytes32 stateRoot_, uint64 verifiedAt_)
    {
        blockId_ = state.slotA.lastSyncedBlockId;
        (blockHash_, stateRoot_, verifiedAt_) = LibUtils.getBlockInfo(state, getConfig(), blockId_);
    }

    /// @notice Gets the state variables of the TaikoL1 contract.
    /// @dev This method can be deleted once node/client stops using it.
    /// @return State variables stored at SlotA.
    /// @return State variables stored at SlotB.
    function getStateVariables()
        external
        view
        returns (TaikoData.SlotA memory, TaikoData.SlotB memory)
    {
        return (state.slotA, state.slotB);
    }

    /// @inheritdoc EssentialContract
    function unpause() public override {
        super.unpause(); // permission checked inside
        state.slotB.lastUnpausedAt = uint64(block.timestamp);
    }

    /// @inheritdoc ITaikoL1
    function getConfig() public pure virtual returns (TaikoData.Config memory) {
        return TaikoData.Config({
            chainId: LibNetwork.TAIKO_MAINNET,
            blockMaxProposals: 324_000, // = 7200 * 45
            blockRingBufferSize: 360_000, // = 7200 * 50
            maxBlocksToVerify: 16,
            blockMaxGasLimit: 240_000_000,
            livenessBond: 125e18, // 125 Taiko token
            stateRootSyncInternal: 16,
            maxAnchorHeightOffset: 64,
            baseFeeConfig: LibSharedData.BaseFeeConfig({
                adjustmentQuotient: 8,
                sharingPctg: 75,
                gasIssuancePerSecond: 5_000_000,
                minGasExcess: 1_340_000_000,
                maxGasIssuancePerBlock: 600_000_000 // two minutes
             }),
            ontakeForkHeight: 374_400 // = 7200 * 52
         });
    }

    /// @dev chain_pauser is supposed to be a cold wallet.
    function _authorizePause(
        address,
        bool
    )
        internal
        view
        virtual
        override
        onlyFromOwnerOrNamed(LibStrings.B_CHAIN_WATCHDOG)
    { }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "src/shared/common/LibStrings.sol";
import "src/shared/common/LibNetwork.sol";
import "./AddressCache.sol";

/// @title RollupAddressCache
/// @custom:security-contact [email protected]
contract RollupAddressCache is AddressCache {
    function getCachedAddress(
        uint64 _chainId,
        bytes32 _name
    )
        internal
        pure
        override
        returns (bool found, address addr)
    {
        if (_chainId != LibNetwork.ETHEREUM_MAINNET) {
            return (false, address(0));
        }

        if (_name == LibStrings.B_TAIKO_TOKEN) {
            return (true, 0x10dea67478c5F8C5E2D90e5E9B26dBe60c54d800);
        }
        if (_name == LibStrings.B_SIGNAL_SERVICE) {
            return (true, 0x9e0a24964e5397B566c1ed39258e21aB5E35C77C);
        }
        if (_name == LibStrings.B_BRIDGE) {
            return (true, 0xd60247c6848B7Ca29eDdF63AA924E53dB6Ddd8EC);
        }
        if (_name == LibStrings.B_TAIKO) {
            return (true, 0x06a9Ab27c7e2255df1815E6CC0168d7755Feb19a);
        }
        if (_name == LibStrings.B_TIER_ROUTER) {
            return (true, 0x8f1C1D58C858e9a9eeCc587d7D51AECfd16b5542);
        }
        if (_name == LibStrings.B_TIER_SGX) {
            return (true, 0xb0f3186FC1963f774f52ff455DC86aEdD0b31F81);
        }
        if (_name == LibStrings.B_TIER_GUARDIAN_MINORITY) {
            return (true, 0x579A8d63a2Db646284CBFE31FE5082c9989E985c);
        }
        if (_name == LibStrings.B_TIER_GUARDIAN) {
            return (true, 0xE3D777143Ea25A6E031d1e921F396750885f43aC);
        }
        if (_name == LibStrings.B_AUTOMATA_DCAP_ATTESTATION) {
            return (true, 0x8d7C954960a36a7596d7eA4945dDf891967ca8A3);
        }
        if (_name == LibStrings.B_PRECONF_REGISTRY) {
            return (true, address(0));
        }
        if (_name == LibStrings.B_CHAIN_WATCHDOG) {
            return (true, 0xE3D777143Ea25A6E031d1e921F396750885f43aC);
        }
        return (false, address(0));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title LibFasterReentryLock
/// @custom:security-contact [email protected]
library LibFasterReentryLock {
    /// @dev The slot in transient storage of the reentry lock.
    /// This is the result of keccak256("ownerUUPS.reentry_slot") plus 1. The addition aims to
    /// prevent hash collisions with slots defined in EIP-1967, where slots are derived by
    /// keccak256("something") - 1, and with slots in SignalService, calculated directly with
    /// keccak256("something").
    bytes32 private constant _REENTRY_SLOT =
        0xa5054f728453d3dbe953bdc43e4d0cb97e662ea32d7958190f3dc2da31d9721b;

    function storeReentryLock(uint8 _reentry) internal {
        assembly {
            tstore(_REENTRY_SLOT, _reentry)
        }
    }

    function loadReentryLock() internal view returns (uint8 reentry_) {
        assembly {
            reentry_ := tload(_REENTRY_SLOT)
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol";
import "./AddressResolver.sol";

/// @title EssentialContract
/// @custom:security-contact [email protected]
abstract contract EssentialContract is UUPSUpgradeable, Ownable2StepUpgradeable, AddressResolver {
    uint8 private constant _FALSE = 1;
    uint8 private constant _TRUE = 2;

    /// @dev Slot 1.
    uint8 private __reentry;
    uint8 private __paused;
    uint64 public lastUnpausedAt;

    uint256[49] private __gap;

    /// @notice Emitted when the contract is paused.
    /// @param account The account that paused the contract.
    event Paused(address account);

    /// @notice Emitted when the contract is unpaused.
    /// @param account The account that unpaused the contract.
    event Unpaused(address account);

    error INVALID_PAUSE_STATUS();
    error FUNC_NOT_IMPLEMENTED();
    error REENTRANT_CALL();
    error ZERO_ADDRESS();
    error ZERO_VALUE();

    /// @dev Modifier that ensures the caller is the owner or resolved address of a given name.
    /// @param _name The name to check against.
    modifier onlyFromOwnerOrNamed(bytes32 _name) {
        if (msg.sender != owner() && msg.sender != resolve(_name, true)) revert RESOLVER_DENIED();
        _;
    }

    modifier notImplemented() {
        revert FUNC_NOT_IMPLEMENTED();
        _;
    }

    modifier nonReentrant() {
        if (_loadReentryLock() == _TRUE) revert REENTRANT_CALL();
        _storeReentryLock(_TRUE);
        _;
        _storeReentryLock(_FALSE);
    }

    modifier whenPaused() {
        if (!paused()) revert INVALID_PAUSE_STATUS();
        _;
    }

    modifier whenNotPaused() {
        if (paused()) revert INVALID_PAUSE_STATUS();
        _;
    }

    modifier nonZeroAddr(address _addr) {
        if (_addr == address(0)) revert ZERO_ADDRESS();
        _;
    }

    modifier nonZeroValue(uint256 _value) {
        if (_value == 0) revert ZERO_VALUE();
        _;
    }

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    /// @notice Pauses the contract.
    function pause() public virtual {
        _pause();
        // We call the authorize function here to avoid:
        // Warning (5740): Unreachable code.
        _authorizePause(msg.sender, true);
    }

    /// @notice Unpauses the contract.
    function unpause() public virtual {
        _unpause();
        // We call the authorize function here to avoid:
        // Warning (5740): Unreachable code.
        _authorizePause(msg.sender, false);
    }

    function impl() public view returns (address) {
        return _getImplementation();
    }

    /// @notice Returns true if the contract is paused, and false otherwise.
    /// @return true if paused, false otherwise.
    function paused() public view returns (bool) {
        return __paused == _TRUE;
    }

    function inNonReentrant() public view returns (bool) {
        return _loadReentryLock() == _TRUE;
    }

    /// @notice Initializes the contract.
    /// @param _owner The owner of this contract. msg.sender will be used if this value is zero.
    /// @param _addressManager The address of the {AddressManager} contract.
    function __Essential_init(
        address _owner,
        address _addressManager
    )
        internal
        nonZeroAddr(_addressManager)
    {
        __Essential_init(_owner);
        __AddressResolver_init(_addressManager);
    }

    function __Essential_init(address _owner) internal virtual onlyInitializing {
        __Context_init();
        _transferOwnership(_owner == address(0) ? msg.sender : _owner);
        __paused = _FALSE;
    }

    function _pause() internal whenNotPaused {
        __paused = _TRUE;
        emit Paused(msg.sender);
    }

    function _unpause() internal whenPaused {
        __paused = _FALSE;
        lastUnpausedAt = uint64(block.timestamp);
        emit Unpaused(msg.sender);
    }

    function _authorizeUpgrade(address) internal virtual override onlyOwner { }

    function _authorizePause(address, bool) internal virtual onlyOwner { }

    // Stores the reentry lock
    function _storeReentryLock(uint8 _reentry) internal virtual {
        __reentry = _reentry;
    }

    // Loads the reentry lock
    function _loadReentryLock() internal view virtual returns (uint8 reentry_) {
        reentry_ = __reentry;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "../verifiers/IVerifier.sol";
import "./TaikoData.sol";

/// @title LibData
/// @notice A library that offers helper functions.
/// @custom:security-contact [email protected]
library LibData {
    // = keccak256(abi.encode(new TaikoData.EthDeposit[](0)))
    bytes32 internal constant EMPTY_ETH_DEPOSIT_HASH =
        0x569e75fc77c1a856f6daaf9e69d8a9566ca34aa47f9133711ce065a571af0cfd;

    function blockParamsV1ToV2(TaikoData.BlockParams memory _v1)
        internal
        pure
        returns (TaikoData.BlockParamsV2 memory)
    {
        return TaikoData.BlockParamsV2({
            proposer: address(0),
            coinbase: _v1.coinbase,
            parentMetaHash: _v1.parentMetaHash,
            anchorBlockId: 0,
            timestamp: 0,
            blobTxListOffset: 0,
            blobTxListLength: 0,
            blobIndex: 0
        });
    }

    function blockMetadataV2toV1(TaikoData.BlockMetadataV2 memory _v2)
        internal
        pure
        returns (TaikoData.BlockMetadata memory)
    {
        return TaikoData.BlockMetadata({
            l1Hash: _v2.anchorBlockHash,
            difficulty: _v2.difficulty,
            blobHash: _v2.blobHash,
            extraData: _v2.extraData,
            depositsHash: EMPTY_ETH_DEPOSIT_HASH,
            coinbase: _v2.coinbase,
            id: _v2.id,
            gasLimit: _v2.gasLimit,
            timestamp: _v2.timestamp,
            l1Height: _v2.anchorBlockId,
            minTier: _v2.minTier,
            blobUsed: _v2.blobUsed,
            parentMetaHash: _v2.parentMetaHash,
            sender: _v2.proposer
        });
    }

    function blockMetadataV1toV2(TaikoData.BlockMetadata memory _v1)
        internal
        pure
        returns (TaikoData.BlockMetadataV2 memory)
    {
        return TaikoData.BlockMetadataV2({
            anchorBlockHash: _v1.l1Hash,
            difficulty: _v1.difficulty,
            blobHash: _v1.blobHash,
            extraData: _v1.extraData,
            coinbase: _v1.coinbase,
            id: _v1.id,
            gasLimit: _v1.gasLimit,
            timestamp: _v1.timestamp,
            anchorBlockId: _v1.l1Height,
            minTier: _v1.minTier,
            blobUsed: _v1.blobUsed,
            parentMetaHash: _v1.parentMetaHash,
            proposer: _v1.sender,
            livenessBond: 0,
            proposedAt: 0,
            proposedIn: 0,
            blobTxListOffset: 0,
            blobTxListLength: 0,
            blobIndex: 0,
            baseFeeConfig: LibSharedData.BaseFeeConfig(0, 0, 0, 0, 0)
        });
    }

    function blockV2toV1(TaikoData.BlockV2 memory _v2)
        internal
        pure
        returns (TaikoData.Block memory)
    {
        return TaikoData.Block({
            metaHash: _v2.metaHash,
            assignedProver: _v2.assignedProver,
            livenessBond: _v2.livenessBond,
            blockId: _v2.blockId,
            proposedAt: _v2.proposedAt,
            proposedIn: _v2.proposedIn,
            nextTransitionId: _v2.nextTransitionId,
            verifiedTransitionId: _v2.verifiedTransitionId
        });
    }

    function verifierContextV2toV1(IVerifier.ContextV2 memory _v2)
        internal
        pure
        returns (IVerifier.Context memory)
    {
        return IVerifier.Context({
            metaHash: _v2.metaHash,
            blobHash: _v2.blobHash,
            prover: _v2.prover,
            blockId: _v2.blockId,
            isContesting: _v2.isContesting,
            blobUsed: _v2.blobUsed,
            msgSender: _v2.msgSender
        });
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "src/shared/common/LibAddress.sol";
import "src/shared/common/LibNetwork.sol";
import "./LibBonds.sol";
import "./LibData.sol";
import "./LibUtils.sol";
import "./LibVerifying.sol";

/// @title LibProposing
/// @notice A library for handling block proposals in the Taiko protocol.
/// @custom:security-contact [email protected]
library LibProposing {
    using LibAddress for address;

    uint256 internal constant SECONDS_PER_BLOCK = 12;

    struct Local {
        TaikoData.SlotB b;
        TaikoData.BlockParamsV2 params;
        ITierProvider tierProvider;
        bytes32 parentMetaHash;
        bool postFork;
        bool allowCustomProposer;
        bytes32 extraData;
    }

    /// @notice Emitted when a block is proposed.
    /// @param blockId The ID of the proposed block.
    /// @param assignedProver The address of the assigned prover.
    /// @param livenessBond The liveness bond of the proposed block.
    /// @param meta The metadata of the proposed block.
    /// @param depositsProcessed The EthDeposit array about processed deposits in this proposed
    /// block.
    event BlockProposed(
        uint256 indexed blockId,
        address indexed assignedProver,
        uint96 livenessBond,
        TaikoData.BlockMetadata meta,
        TaikoData.EthDeposit[] depositsProcessed
    );

    /// @notice Emitted when a block is proposed.
    /// @param blockId The ID of the proposed block.
    /// @param meta The metadata of the proposed block.
    event BlockProposedV2(uint256 indexed blockId, TaikoData.BlockMetadataV2 meta);

    /// @notice Emitted when a block's txList is in the calldata.
    /// @param blockId The ID of the proposed block.
    /// @param txList The txList.
    event CalldataTxList(uint256 indexed blockId, bytes txList);

    error L1_BLOB_NOT_AVAILABLE();
    error L1_BLOB_NOT_FOUND();
    error L1_INVALID_ANCHOR_BLOCK();
    error L1_INVALID_CUSTOM_PROPOSER();
    error L1_INVALID_PARAMS();
    error L1_INVALID_PROPOSER();
    error L1_INVALID_TIMESTAMP();
    error L1_LIVENESS_BOND_NOT_RECEIVED();
    error L1_TOO_MANY_BLOCKS();
    error L1_UNEXPECTED_PARENT();

    /// @notice Proposes multiple Taiko L2 blocks.
    /// @param _state The current state of the Taiko protocol.
    /// @param _config The configuration parameters for the Taiko protocol.
    /// @param _resolver The address resolver interface.
    /// @param _paramsArr An array of encoded data bytes containing the block parameters.
    /// @param _txListArr An array of transaction list bytes (if not blob).
    /// @return metaV1s_ An array of metadata objects for the proposed L2 blocks (version 1).
    /// @return metas_ An array of metadata objects for the proposed L2 blocks (version 2).
    function proposeBlocks(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        bytes[] calldata _paramsArr,
        bytes[] calldata _txListArr
    )
        public
        returns (
            TaikoData.BlockMetadata[] memory metaV1s_,
            TaikoData.BlockMetadataV2[] memory metas_
        )
    {
        if (_paramsArr.length == 0 || _paramsArr.length != _txListArr.length) {
            revert L1_INVALID_PARAMS();
        }

        metaV1s_ = new TaikoData.BlockMetadata[](_paramsArr.length);
        metas_ = new TaikoData.BlockMetadataV2[](_paramsArr.length);

        for (uint256 i; i < _paramsArr.length; ++i) {
            (metaV1s_[i], metas_[i]) =
                _proposeBlock(_state, _config, _resolver, _paramsArr[i], _txListArr[i]);
        }

        if (!_state.slotB.provingPaused) {
            for (uint256 i; i < _paramsArr.length; ++i) {
                if (LibUtils.shouldVerifyBlocks(_config, metas_[i].id, false)) {
                    LibVerifying.verifyBlocks(_state, _config, _resolver, _config.maxBlocksToVerify);
                }
            }
        }
    }

    /// @notice Proposes a single Taiko L2 block.
    /// @param _state The current state of the Taiko protocol.
    /// @param _config The configuration parameters for the Taiko protocol.
    /// @param _resolver The address resolver interface.
    /// @param _params Encoded data bytes containing the block parameters.
    /// @param _txList Transaction list bytes (if not blob).
    /// @return metaV1_ The metadata of the proposed block (version 1).
    /// @return meta_ The metadata of the proposed block (version 2).
    function proposeBlock(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        bytes calldata _params,
        bytes calldata _txList
    )
        public
        returns (TaikoData.BlockMetadata memory metaV1_, TaikoData.BlockMetadataV2 memory meta_)
    {
        (metaV1_, meta_) = _proposeBlock(_state, _config, _resolver, _params, _txList);

        if (!_state.slotB.provingPaused) {
            if (LibUtils.shouldVerifyBlocks(_config, meta_.id, false)) {
                LibVerifying.verifyBlocks(_state, _config, _resolver, _config.maxBlocksToVerify);
            }
        }
    }

    function _proposeBlock(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        bytes calldata _params,
        bytes calldata _txList
    )
        private
        returns (TaikoData.BlockMetadata memory metaV1_, TaikoData.BlockMetadataV2 memory meta_)
    {
        // Checks proposer access.
        Local memory local;
        local.b = _state.slotB;
        local.postFork = local.b.numBlocks >= _config.ontakeForkHeight;

        // It's essential to ensure that the ring buffer for proposed blocks
        // still has space for at least one more block.
        if (local.b.numBlocks >= local.b.lastVerifiedBlockId + _config.blockMaxProposals + 1) {
            revert L1_TOO_MANY_BLOCKS();
        }

        address preconfRegistry = _resolver.resolve(LibStrings.B_PRECONF_REGISTRY, true);
        if (preconfRegistry != address(0)) {
            if (preconfRegistry != msg.sender) revert L1_INVALID_PROPOSER();
            local.allowCustomProposer = true;
        }

        if (local.postFork) {
            if (_params.length != 0) {
                local.params = abi.decode(_params, (TaikoData.BlockParamsV2));
            }
        } else {
            TaikoData.BlockParams memory paramsV1 = abi.decode(_params, (TaikoData.BlockParams));
            local.params = LibData.blockParamsV1ToV2(paramsV1);
            local.extraData = paramsV1.extraData;
        }

        if (local.params.proposer == address(0)) {
            local.params.proposer = msg.sender;
        } else {
            if (local.params.proposer != msg.sender && !local.allowCustomProposer) {
                revert L1_INVALID_CUSTOM_PROPOSER();
            }
        }

        if (local.params.coinbase == address(0)) {
            local.params.coinbase = local.params.proposer;
        }

        if (local.params.anchorBlockId == 0) {
            unchecked {
                local.params.anchorBlockId = uint64(block.number - 1);
            }
        }

        if (local.params.timestamp == 0) {
            local.params.timestamp = uint64(block.timestamp);
        }

        // Verify params against the parent block.
        TaikoData.BlockV2 storage parentBlk;
        unchecked {
            parentBlk = _state.blocks[(local.b.numBlocks - 1) % _config.blockRingBufferSize];
        }

        if (local.postFork) {
            // Verify the passed in L1 state block number.
            // We only allow the L1 block to be 2 epochs old.
            // The other constraint is that the L1 block number needs to be larger than or equal
            // the one in the previous L2 block.
            if (
                local.params.anchorBlockId + _config.maxAnchorHeightOffset < block.number //
                    || local.params.anchorBlockId >= block.number
                    || local.params.anchorBlockId < parentBlk.proposedIn
            ) {
                revert L1_INVALID_ANCHOR_BLOCK();
            }

            // Verify the passed in timestamp.
            // We only allow the timestamp to be 2 epochs old.
            // The other constraint is that the timestamp needs to be larger than or equal the
            // one in the previous L2 block.
            if (
                local.params.timestamp + _config.maxAnchorHeightOffset * SECONDS_PER_BLOCK
                    < block.timestamp || local.params.timestamp > block.timestamp
                    || local.params.timestamp < parentBlk.proposedAt
            ) {
                revert L1_INVALID_TIMESTAMP();
            }
        }

        // Check if parent block has the right meta hash. This is to allow the proposer to make
        // sure the block builds on the expected latest chain state.
        if (local.params.parentMetaHash == 0) {
            local.params.parentMetaHash = parentBlk.metaHash;
        } else if (local.params.parentMetaHash != parentBlk.metaHash) {
            revert L1_UNEXPECTED_PARENT();
        }

        // Initialize metadata to compute a metaHash, which forms a part of
        // the block data to be stored on-chain for future integrity checks.
        // If we choose to persist all data fields in the metadata, it will
        // require additional storage slots.
        meta_ = TaikoData.BlockMetadataV2({
            anchorBlockHash: blockhash(local.params.anchorBlockId),
            difficulty: keccak256(abi.encode("TAIKO_DIFFICULTY", local.b.numBlocks)),
            blobHash: 0, // to be initialized below
            // To make sure each L2 block can be exexucated deterministiclly by the client
            // without referering to its metadata on Ethereum, we need to encode
            // config.sharingPctg into the extraData.
            extraData: local.postFork ? _encodeBaseFeeConfig(_config.baseFeeConfig) : local.extraData,
            coinbase: local.params.coinbase,
            id: local.b.numBlocks,
            gasLimit: _config.blockMaxGasLimit,
            timestamp: local.params.timestamp,
            anchorBlockId: local.params.anchorBlockId,
            minTier: 0, // to be initialized below
            blobUsed: _txList.length == 0,
            parentMetaHash: local.params.parentMetaHash,
            proposer: local.params.proposer,
            livenessBond: _config.livenessBond,
            proposedAt: uint64(block.timestamp),
            proposedIn: uint64(block.number),
            blobTxListOffset: local.params.blobTxListOffset,
            blobTxListLength: local.params.blobTxListLength,
            blobIndex: local.params.blobIndex,
            baseFeeConfig: _config.baseFeeConfig
        });

        // Update certain meta fields
        if (meta_.blobUsed) {
            if (!LibNetwork.isDencunSupported(block.chainid)) revert L1_BLOB_NOT_AVAILABLE();

            // Always use the first blob in this transaction. If the
            // proposeBlock functions are called more than once in the same
            // L1 transaction, these multiple L2 blocks will share the same
            // blob.
            meta_.blobHash = blobhash(local.params.blobIndex);
            if (meta_.blobHash == 0) revert L1_BLOB_NOT_FOUND();
        } else {
            meta_.blobHash = keccak256(_txList);
            emit CalldataTxList(meta_.id, _txList);
        }

        local.tierProvider = ITierProvider(
            ITierRouter(_resolver.resolve(LibStrings.B_TIER_ROUTER, false)).getProvider(
                local.b.numBlocks
            )
        );

        // Use the difficulty as a random number
        meta_.minTier = local.tierProvider.getMinTier(meta_.proposer, uint256(meta_.difficulty));

        if (!local.postFork) {
            metaV1_ = LibData.blockMetadataV2toV1(meta_);
        }

        // Create the block that will be stored onchain
        TaikoData.BlockV2 memory blk = TaikoData.BlockV2({
            metaHash: local.postFork ? keccak256(abi.encode(meta_)) : keccak256(abi.encode(metaV1_)),
            assignedProver: address(0),
            livenessBond: local.postFork ? 0 : meta_.livenessBond,
            blockId: local.b.numBlocks,
            proposedAt: local.postFork ? local.params.timestamp : uint64(block.timestamp),
            proposedIn: local.postFork ? local.params.anchorBlockId : uint64(block.number),
            // For a new block, the next transition ID is always 1, not 0.
            nextTransitionId: 1,
            livenessBondReturned: false,
            // For unverified block, its verifiedTransitionId is always 0.
            verifiedTransitionId: 0
        });

        // Store the block in the ring buffer
        _state.blocks[local.b.numBlocks % _config.blockRingBufferSize] = blk;

        // Increment the counter (cursor) by 1.
        unchecked {
            ++_state.slotB.numBlocks;
        }

        LibBonds.debitBond(_state, _resolver, local.params.proposer, _config.livenessBond);

        // Bribe the block builder. Unlike 1559-tips, this tip is only made
        // if this transaction succeeds.
        if (msg.value != 0 && block.coinbase != address(0)) {
            address(block.coinbase).sendEtherAndVerify(msg.value);
        }

        if (local.postFork) {
            emit BlockProposedV2(meta_.id, meta_);
        } else {
            emit BlockProposed({
                blockId: metaV1_.id,
                assignedProver: local.params.proposer,
                livenessBond: _config.livenessBond,
                meta: metaV1_,
                depositsProcessed: new TaikoData.EthDeposit[](0)
            });
        }
    }

    function _encodeBaseFeeConfig(LibSharedData.BaseFeeConfig memory _baseFeeConfig)
        private
        pure
        returns (bytes32)
    {
        return bytes32(uint256(_baseFeeConfig.sharingPctg));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "../verifiers/IVerifier.sol";
import "./LibBonds.sol";
import "./LibData.sol";
import "./LibUtils.sol";
import "./LibVerifying.sol";

/// @title LibProving
/// @notice A library for handling block contestation and proving in the Taiko
/// protocol.
/// @custom:security-contact [email protected]
library LibProving {
    using LibMath for uint256;

    // A struct to get around stack too deep issue and to cache state variables for multiple reads.
    struct Local {
        TaikoData.SlotB b;
        ITierProvider.Tier tier;
        ITierProvider.Tier minTier;
        TaikoData.BlockMetadataV2 meta;
        TaikoData.TierProof proof;
        bytes32 metaHash;
        address assignedProver;
        bytes32 stateRoot;
        uint96 livenessBond;
        uint64 slot;
        uint64 blockId;
        uint24 tid;
        bool lastUnpausedAt;
        bool isTopTier;
        bool inProvingWindow;
        bool sameTransition;
        bool postFork;
        uint64 proposedAt;
        bool isSyncBlock;
    }

    /// @notice Emitted when a transition is proved.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param prover The prover's address.
    /// @param validityBond The validity bond amount.
    /// @param tier The tier of the proof.
    event TransitionProved(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address prover,
        uint96 validityBond,
        uint16 tier
    );

    /// @notice Emitted when a transition is proved.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param prover The prover's address.
    /// @param validityBond The validity bond amount.
    /// @param tier The tier of the proof.
    /// @param proposedIn The L1 block in which a transition is proved.
    event TransitionProvedV2(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address prover,
        uint96 validityBond,
        uint16 tier,
        uint64 proposedIn
    );

    /// @notice Emitted when a transition is contested.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param contester The contester's address.
    /// @param contestBond The contest bond amount.
    /// @param tier The tier of the proof.
    event TransitionContested(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address contester,
        uint96 contestBond,
        uint16 tier
    );

    /// @notice Emitted when a transition is contested.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param contester The contester's address.
    /// @param contestBond The contest bond amount.
    /// @param tier The tier of the proof.
    /// @param proposedIn The L1 block in which this L2 block is proposed.
    event TransitionContestedV2(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address contester,
        uint96 contestBond,
        uint16 tier,
        uint64 proposedIn
    );

    /// @notice Emitted when proving is paused or unpaused.
    /// @param paused The pause status.
    event ProvingPaused(bool paused);

    error L1_ALREADY_CONTESTED();
    error L1_ALREADY_PROVED();
    error L1_BLOCK_MISMATCH();
    error L1_CANNOT_CONTEST();
    error L1_DIFF_VERIFIER();
    error L1_INVALID_PARAMS();
    error L1_INVALID_PAUSE_STATUS();
    error L1_INVALID_TIER();
    error L1_INVALID_TRANSITION();
    error L1_NOT_ASSIGNED_PROVER();
    error L1_PROVING_PAUSED();

    /// @notice Pauses or unpauses the proving process.
    /// @param _state Current TaikoData.State.
    /// @param _pause The pause status.
    function pauseProving(TaikoData.State storage _state, bool _pause) internal {
        if (_state.slotB.provingPaused == _pause) revert L1_INVALID_PAUSE_STATUS();
        _state.slotB.provingPaused = _pause;

        if (!_pause) {
            _state.slotB.lastUnpausedAt = uint64(block.timestamp);
        }
        emit ProvingPaused(_pause);
    }

    /// @dev Proves or contests multiple Taiko L2 blocks.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _resolver Address resolver interface.
    /// @param _blockIds The index of the block to prove. This is also used to
    /// select the right implementation version.
    /// @param _inputs An abi-encoded (TaikoData.BlockMetadata, TaikoData.Transition,
    /// TaikoData.TierProof) tuple.
    /// @param _batchProof An abi-encoded TaikoData.TierProof that contains the batch/aggregated
    /// proof for the given blocks.
    function proveBlocks(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        uint64[] calldata _blockIds,
        bytes[] calldata _inputs,
        bytes calldata _batchProof
    )
        public
    {
        if (_blockIds.length == 0 || _blockIds.length != _inputs.length) {
            revert L1_INVALID_PARAMS();
        }

        TaikoData.TierProof memory batchProof;
        if (_batchProof.length != 0) {
            batchProof = abi.decode(_batchProof, (TaikoData.TierProof));
            if (batchProof.tier == 0) revert L1_INVALID_TIER();
        }

        IVerifier.ContextV2[] memory ctxs = new IVerifier.ContextV2[](_blockIds.length);
        bytes32 batchVerifierName;
        bool batchVerifierNameSet;

        // This loop iterates over each block ID in the _blockIds array.
        // For each block ID, it calls the _proveBlock function to get the context and verifier.
        for (uint256 i; i < _blockIds.length; ++i) {
            bytes32 _verifierName;
            (ctxs[i], _verifierName) =
                _proveBlock(_state, _config, _resolver, _blockIds[i], _inputs[i], batchProof);

            // Verify that if batchProof is used, the verifier is the same for all blocks.
            if (batchProof.tier != 0) {
                if (!batchVerifierNameSet) {
                    batchVerifierNameSet = true;
                    batchVerifierName = _verifierName;
                } else if (batchVerifierName != _verifierName) {
                    revert L1_DIFF_VERIFIER();
                }
            }
        }

        // If batch verifier name is not empty, verify the batch proof.
        if (batchVerifierName != "") {
            IVerifier(_resolver.resolve(batchVerifierName, false)).verifyBatchProof(
                ctxs, batchProof
            );
        }
    }

    /// @dev Proves or contests a single Taiko L2 block.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _resolver Address resolver interface.
    /// @param _blockId The index of the block to prove. This is also used to
    /// select the right implementation version.
    /// @param _input An abi-encoded (TaikoData.BlockMetadata, TaikoData.Transition,
    /// TaikoData.TierProof) tuple.
    function proveBlock(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        uint64 _blockId,
        bytes calldata _input
    )
        public
    {
        TaikoData.TierProof memory noBatchProof;
        _proveBlock(_state, _config, _resolver, _blockId, _input, noBatchProof);
    }

    function _proveBlock(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        uint64 _blockId,
        bytes calldata _input,
        TaikoData.TierProof memory _batchProof
    )
        private
        returns (IVerifier.ContextV2 memory ctx_, bytes32 verifierName_)
    {
        Local memory local;
        local.b = _state.slotB;
        local.blockId = _blockId;
        local.postFork = _blockId >= _config.ontakeForkHeight;

        if (local.postFork) {
            if (_batchProof.tier == 0) {
                // No batch proof is available, each transition is proving using a separate proof.
                (local.meta, ctx_.tran, local.proof) = abi.decode(
                    _input, (TaikoData.BlockMetadataV2, TaikoData.Transition, TaikoData.TierProof)
                );
            } else {
                // All transitions are proving using the batch proof.
                (local.meta, ctx_.tran) =
                    abi.decode(_input, (TaikoData.BlockMetadataV2, TaikoData.Transition));
                local.proof = _batchProof;
            }
        } else {
            TaikoData.BlockMetadata memory metaV1;
            (metaV1, ctx_.tran, local.proof) = abi.decode(
                _input, (TaikoData.BlockMetadata, TaikoData.Transition, TaikoData.TierProof)
            );
            local.meta = LibData.blockMetadataV1toV2(metaV1);
        }

        if (_blockId != local.meta.id) revert LibUtils.L1_INVALID_BLOCK_ID();

        // Make sure parentHash is not zero
        // To contest an existing transition, simply use any non-zero value as
        // the blockHash and stateRoot.
        if (ctx_.tran.parentHash == 0 || ctx_.tran.blockHash == 0 || ctx_.tran.stateRoot == 0) {
            revert L1_INVALID_TRANSITION();
        }

        // Check that the block has been proposed but has not yet been verified.
        if (local.meta.id <= local.b.lastVerifiedBlockId || local.meta.id >= local.b.numBlocks) {
            revert LibUtils.L1_INVALID_BLOCK_ID();
        }

        local.slot = local.meta.id % _config.blockRingBufferSize;
        TaikoData.BlockV2 storage blk = _state.blocks[local.slot];

        local.proposedAt = local.postFork ? local.meta.proposedAt : blk.proposedAt;

        local.isSyncBlock =
            LibUtils.shouldSyncStateRoot(_config.stateRootSyncInternal, local.blockId);
        if (local.isSyncBlock) {
            local.stateRoot = ctx_.tran.stateRoot;
        }

        local.assignedProver = blk.assignedProver;
        if (local.assignedProver == address(0)) {
            local.assignedProver = local.meta.proposer;
        }

        if (!blk.livenessBondReturned) {
            local.livenessBond =
                local.meta.livenessBond == 0 ? blk.livenessBond : local.meta.livenessBond;
        }
        local.metaHash = blk.metaHash;

        // Check the integrity of the block data. It's worth noting that in
        // theory, this check may be skipped, but it's included for added
        // caution.
        {
            bytes32 metaHash = local.postFork
                ? keccak256(abi.encode(local.meta))
                : keccak256(abi.encode(LibData.blockMetadataV2toV1(local.meta)));

            if (local.metaHash != metaHash) revert L1_BLOCK_MISMATCH();
        }

        // Each transition is uniquely identified by the parentHash, with the
        // blockHash and stateRoot open for later updates as higher-tier proofs
        // become available. In cases where a transition with the specified
        // parentHash does not exist, the transition ID (tid) will be set to 0.
        TaikoData.TransitionState memory ts;
        (local.tid, ts) = _fetchOrCreateTransition(_state, blk, ctx_.tran, local);

        // The new proof must meet or exceed the minimum tier required by the
        // block or the previous proof; it cannot be on a lower tier.
        if (
            local.proof.tier == 0 || local.proof.tier < local.meta.minTier
                || local.proof.tier < ts.tier
        ) {
            revert L1_INVALID_TIER();
        }

        // Retrieve the tier configurations. If the tier is not supported, the
        // subsequent action will result in a revert.
        {
            ITierRouter tierRouter = ITierRouter(_resolver.resolve(LibStrings.B_TIER_ROUTER, false));
            ITierProvider tierProvider = ITierProvider(tierRouter.getProvider(local.blockId));

            local.tier = tierProvider.getTier(local.proof.tier);
            local.minTier = tierProvider.getTier(local.meta.minTier);
            local.isTopTier = local.tier.contestBond == 0;
        }

        local.inProvingWindow = !LibUtils.isPostDeadline({
            _tsTimestamp: ts.timestamp,
            _lastUnpausedAt: local.b.lastUnpausedAt,
            _windowMinutes: local.minTier.provingWindow
        });

        // Checks if only the assigned prover is permissioned to prove the block.
        // The assigned prover is granted exclusive permission to prove only the first
        // transition.
        if (
            !local.isTopTier && ts.contester == address(0) && local.tid == 1 && ts.tier == 0
                && local.inProvingWindow
        ) {
            if (msg.sender != local.assignedProver) revert L1_NOT_ASSIGNED_PROVER();
        }
        // We must verify the proof, and any failure in proof verification will
        // result in a revert.
        //
        // It's crucial to emphasize that the proof can be assessed in two
        // potential modes: "proving mode" and "contesting mode." However, the
        // precise verification logic is defined within each tier's IVerifier
        // contract implementation. We simply specify to the verifier contract
        // which mode it should utilize - if the new tier is higher than the
        // previous tier, we employ the proving mode; otherwise, we employ the
        // contesting mode (the new tier cannot be lower than the previous tier,
        // this has been checked above).
        //
        // It's obvious that proof verification is entirely decoupled from
        // Taiko's core protocol.
        if (local.tier.verifierName != "") {
            ctx_ = IVerifier.ContextV2({
                metaHash: local.metaHash,
                blobHash: local.meta.blobHash,
                // Separate msgSender to allow the prover to be any address in the future.
                prover: msg.sender,
                msgSender: msg.sender,
                blockId: local.blockId,
                isContesting: local.proof.tier == ts.tier && !local.isTopTier,
                blobUsed: local.meta.blobUsed,
                tran: ctx_.tran
            });

            verifierName_ = local.tier.verifierName;

            if (_batchProof.tier == 0) {
                // In the case of per-transition proof, we verify the proof.
                IVerifier(_resolver.resolve(local.tier.verifierName, false)).verifyProof(
                    LibData.verifierContextV2toV1(ctx_), ctx_.tran, local.proof
                );
            }
        }

        local.sameTransition = local.isSyncBlock
            ? ctx_.tran.blockHash == ts.blockHash && local.stateRoot == ts.stateRoot
            : ctx_.tran.blockHash == ts.blockHash;

        if (local.proof.tier > ts.tier) {
            // Handles the case when an incoming tier is higher than the current transition's tier.
            // Reverts when the incoming proof tries to prove the same transition
            // (L1_ALREADY_PROVED).
            _overrideWithHigherProof(_state, _resolver, blk, ts, ctx_.tran, local.proof, local);

            if (local.postFork) {
                emit TransitionProvedV2({
                    blockId: local.blockId,
                    tran: ctx_.tran,
                    prover: msg.sender,
                    validityBond: local.tier.validityBond,
                    tier: local.proof.tier,
                    proposedIn: local.meta.proposedIn
                });
            } else {
                emit TransitionProved({
                    blockId: local.blockId,
                    tran: ctx_.tran,
                    prover: msg.sender,
                    validityBond: local.tier.validityBond,
                    tier: local.proof.tier
                });
            }
        } else {
            // New transition and old transition on the same tier - and if this transaction tries to
            // prove the same, it reverts
            if (local.sameTransition) revert L1_ALREADY_PROVED();

            if (local.isTopTier) {
                // The top tier prover re-proves.
                assert(local.tier.validityBond == 0);
                assert(ts.validityBond == 0 && ts.contester == address(0));

                ts.prover = msg.sender;
                ts.blockHash = ctx_.tran.blockHash;
                ts.stateRoot = local.stateRoot;

                if (local.postFork) {
                    emit TransitionProvedV2({
                        blockId: local.blockId,
                        tran: ctx_.tran,
                        prover: msg.sender,
                        validityBond: 0,
                        tier: local.proof.tier,
                        proposedIn: local.meta.proposedIn
                    });
                } else {
                    emit TransitionProved({
                        blockId: local.blockId,
                        tran: ctx_.tran,
                        prover: msg.sender,
                        validityBond: 0,
                        tier: local.proof.tier
                    });
                }
            } else {
                // Contesting but not on the highest tier
                if (ts.contester != address(0)) revert L1_ALREADY_CONTESTED();

                // Making it a non-sliding window, relative when ts.timestamp was registered (or to
                // lastUnpaused if that one is bigger)
                if (
                    LibUtils.isPostDeadline(
                        ts.timestamp, local.b.lastUnpausedAt, local.tier.cooldownWindow
                    )
                ) {
                    revert L1_CANNOT_CONTEST();
                }

                // _checkIfContestable(/*_state,*/ tier.cooldownWindow, ts.timestamp);
                // Burn the contest bond from the prover.
                LibBonds.debitBond(_state, _resolver, msg.sender, local.tier.contestBond);

                // We retain the contest bond within the transition, just in
                // case this configuration is altered to a different value
                // before the contest is resolved.
                //
                // It's worth noting that the previous value of ts.contestBond
                // doesn't have any significance.
                ts.contestBond = local.tier.contestBond;
                ts.contester = msg.sender;

                if (local.postFork) {
                    emit TransitionContestedV2({
                        blockId: local.blockId,
                        tran: ctx_.tran,
                        contester: msg.sender,
                        contestBond: local.tier.contestBond,
                        tier: local.proof.tier,
                        proposedIn: local.meta.proposedIn
                    });
                } else {
                    emit TransitionContested({
                        blockId: local.blockId,
                        tran: ctx_.tran,
                        contester: msg.sender,
                        contestBond: local.tier.contestBond,
                        tier: local.proof.tier
                    });
                }
            }
        }

        ts.timestamp = uint64(block.timestamp);
        _state.transitions[local.slot][local.tid] = ts;

        if (
            !_state.slotB.provingPaused && LibUtils.shouldVerifyBlocks(_config, local.meta.id, true)
        ) {
            LibVerifying.verifyBlocks(_state, _config, _resolver, _config.maxBlocksToVerify);
        }
    }

    /// @dev Handle the transition initialization logic
    function _fetchOrCreateTransition(
        TaikoData.State storage _state,
        TaikoData.BlockV2 storage _blk,
        TaikoData.Transition memory _tran,
        Local memory _local
    )
        private
        returns (uint24 tid_, TaikoData.TransitionState memory ts_)
    {
        tid_ = LibUtils.getTransitionId(_state, _blk, _local.slot, _tran.parentHash);

        if (tid_ == 0) {
            // In cases where a transition with the provided parentHash is not
            // found, we must essentially "create" one and set it to its initial
            // state. This initial state can be viewed as a special transition
            // on tier-0.
            //
            // Subsequently, we transform this tier-0 transition into a
            // non-zero-tier transition with a proof. This approach ensures that
            // the same logic is applicable for both 0-to-non-zero transition
            // updates and non-zero-to-non-zero transition updates.
            unchecked {
                // Unchecked is safe:  Not realistic 2**32 different fork choice
                // per block will be proven and none of them is valid
                tid_ = _blk.nextTransitionId++;
            }

            // Keep in mind that state.transitions are also reusable storage
            // slots, so it's necessary to reinitialize all transition fields
            // below.
            ts_.timestamp = _local.proposedAt;

            if (tid_ == 1) {
                // This approach serves as a cost-saving technique for the
                // majority of blocks, where the first transition is expected to
                // be the correct one. Writing to `transitions` is more economical
                // since it resides in the ring buffer, whereas writing to
                // `transitionIds` is not as cost-effective.
                ts_.key = _tran.parentHash;

                // In the case of this first transition, the block's assigned
                // prover has the privilege to re-prove it, but only when the
                // assigned prover matches the previous prover. To ensure this,
                // we establish the transition's prover as the block's assigned
                // prover. Consequently, when we carry out a 0-to-non-zero
                // transition update, the previous prover will consistently be
                // the block's assigned prover.
                //
                // While alternative implementations are possible, introducing
                // such changes would require additional if-else logic.
                ts_.prover = _local.assignedProver;
            } else {
                // Furthermore, we index the transition for future retrieval.
                // It's worth emphasizing that this mapping for indexing is not
                // reusable. However, given that the majority of blocks will
                // only possess one transition — the correct one — we don't need
                // to be concerned about the cost in this case.

                // There is no need to initialize ts.key here because it's only used when tid == 1
                _state.transitionIds[_local.blockId][_tran.parentHash] = tid_;
            }
        } else {
            // A transition with the provided parentHash has been located.
            ts_ = _state.transitions[_local.slot][tid_];
        }
    }

    /// @dev Handles what happens when either the first transition is being proven or there is a
    /// higher tier proof incoming
    ///
    /// Assume Alice is the initial prover, Bob is the contester, and Cindy is the subsequent
    /// prover. The validity bond `V` is set at 100, and the contestation bond `C` at 500. If Bob
    /// successfully contests, he receives a reward of 65.625, calculated as 3/4 of 7/8 of 100. Cindy
    /// receives 21.875, which is 1/4 of 7/8 of 100, while the protocol retains 12.5 as friction.
    /// Bob's Return on Investment (ROI) is 13.125%, calculated from 65.625 divided by 500.
    // To establish the expected ROI `r` for valid contestations, where the contestation bond `C` to
    // validity bond `V` ratio is `C/V = 21/(32*r)`, and if `r` set at 10%, the C/V ratio will be
    // 6.5625.
    function _overrideWithHigherProof(
        TaikoData.State storage _state,
        IAddressResolver _resolver,
        TaikoData.BlockV2 storage _blk,
        TaikoData.TransitionState memory _ts,
        TaikoData.Transition memory _tran,
        TaikoData.TierProof memory _proof,
        Local memory _local
    )
        private
    {
        // Higher tier proof overwriting lower tier proof
        uint256 reward; // reward to the new (current) prover

        if (_ts.contester != address(0)) {
            if (_local.sameTransition) {
                // The contested transition is proven to be valid, contester loses the game
                reward = _rewardAfterFriction(_ts.contestBond);

                // We return the validity bond back, but the original prover doesn't get any reward.
                LibBonds.creditBond(_state, _ts.prover, _ts.validityBond);
            } else {
                // The contested transition is proven to be invalid, contester wins the game.
                // Contester gets 3/4 of reward, the new prover gets 1/4.
                reward = _rewardAfterFriction(_ts.validityBond) >> 2;
                unchecked {
                    LibBonds.creditBond(_state, _ts.contester, _ts.contestBond + reward * 3);
                }
            }
        } else {
            if (_local.sameTransition) revert L1_ALREADY_PROVED();

            // The code below will be executed if
            // - 1) the transition is proved for the fist time, or
            // - 2) the transition is contested.
            reward = _rewardAfterFriction(_ts.validityBond);

            if (_local.livenessBond != 0) {
                // After the first proof, the block's liveness bond will always be reset to 0.
                // This means liveness bond will be handled only once for any given block.
                _blk.livenessBond = 0;
                _blk.livenessBondReturned = true;

                if (_returnLivenessBond(_local, _proof.data)) {
                    if (_local.assignedProver == msg.sender) {
                        unchecked {
                            reward += _local.livenessBond;
                        }
                    } else {
                        LibBonds.creditBond(_state, _local.assignedProver, _local.livenessBond);
                    }
                } else {
                    // Reward a majority of liveness bond to the actual prover
                    unchecked {
                        reward += _rewardAfterFriction(_local.livenessBond);
                    }
                }
            }
        }

        unchecked {
            if (reward > _local.tier.validityBond) {
                LibBonds.creditBond(_state, msg.sender, reward - _local.tier.validityBond);
            } else if (reward < _local.tier.validityBond) {
                LibBonds.debitBond(_state, _resolver, msg.sender, _local.tier.validityBond - reward);
            }
        }

        _ts.validityBond = _local.tier.validityBond;
        _ts.contester = address(0);
        _ts.prover = msg.sender;
        _ts.tier = _proof.tier;

        if (!_local.sameTransition) {
            _ts.blockHash = _tran.blockHash;
            _ts.stateRoot = _local.stateRoot;
        }
    }

    /// @dev Returns the reward after applying 12.5% friction.
    function _rewardAfterFriction(uint256 _amount) private pure returns (uint256) {
        return (_amount * 7) >> 3;
    }

    /// @dev Returns if the liveness bond shall be returned.
    function _returnLivenessBond(
        Local memory _local,
        bytes memory _proofData
    )
        private
        pure
        returns (bool)
    {
        return _local.inProvingWindow && _local.tid == 1
            || _local.isTopTier && _proofData.length == 32
                && bytes32(_proofData) == LibStrings.H_RETURN_LIVENESS_BOND;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "src/shared/signal/ISignalService.sol";
import "./LibBonds.sol";
import "./LibUtils.sol";

/// @title LibVerifying
/// @notice A library for handling block verification in the Taiko protocol.
/// @custom:security-contact [email protected]
library LibVerifying {
    using LibMath for uint256;

    struct Local {
        TaikoData.SlotB b;
        uint64 blockId;
        uint64 slot;
        uint64 numBlocksVerified;
        uint24 tid;
        uint24 lastVerifiedTransitionId;
        uint16 tier;
        bytes32 blockHash;
        bytes32 syncStateRoot;
        uint64 syncBlockId;
        uint24 syncTransitionId;
        address prover;
        bool postFork;
        ITierRouter tierRouter;
    }

    error L1_BLOCK_MISMATCH();
    error L1_INVALID_CONFIG();
    error L1_TRANSITION_ID_ZERO();
    error L1_TOO_LATE();

    /// @dev Verifies up to N blocks.
    function verifyBlocks(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        IAddressResolver _resolver,
        uint64 _maxBlocksToVerify
    )
        internal
    {
        if (_maxBlocksToVerify == 0) {
            return;
        }

        Local memory local;
        local.b = _state.slotB;
        local.blockId = local.b.lastVerifiedBlockId;
        local.slot = local.blockId % _config.blockRingBufferSize;

        TaikoData.BlockV2 storage blk = _state.blocks[local.slot];
        if (blk.blockId != local.blockId) revert L1_BLOCK_MISMATCH();

        local.lastVerifiedTransitionId = blk.verifiedTransitionId;
        local.tid = local.lastVerifiedTransitionId;

        // The following scenario should never occur but is included as a
        // precaution.
        if (local.tid == 0) revert L1_TRANSITION_ID_ZERO();

        // The `blockHash` variable represents the most recently trusted
        // blockHash on L2.
        local.blockHash = _state.transitions[local.slot][local.tid].blockHash;

        // Unchecked is safe:
        // - assignment is within ranges
        // - blockId and numBlocksVerified values incremented will still be OK in the
        // next 584K years if we verifying one block per every second

        unchecked {
            ++local.blockId;

            while (
                local.blockId < local.b.numBlocks && local.numBlocksVerified < _maxBlocksToVerify
            ) {
                local.slot = local.blockId % _config.blockRingBufferSize;
                local.postFork = local.blockId >= _config.ontakeForkHeight;

                blk = _state.blocks[local.slot];
                if (blk.blockId != local.blockId) revert L1_BLOCK_MISMATCH();

                local.tid = LibUtils.getTransitionId(_state, blk, local.slot, local.blockHash);
                // When `tid` is 0, it indicates that there is no proven
                // transition with its parentHash equal to the blockHash of the
                // most recently verified block.
                if (local.tid == 0) break;

                // A transition with the correct `parentHash` has been located.
                TaikoData.TransitionState storage ts = _state.transitions[local.slot][local.tid];

                // It's not possible to verify this block if either the
                // transition is contested and awaiting higher-tier proof or if
                // the transition is still within its cooldown period.
                local.tier = ts.tier;

                if (ts.contester != address(0)) {
                    break;
                }

                if (local.tierRouter == ITierRouter(address(0))) {
                    local.tierRouter =
                        ITierRouter(_resolver.resolve(LibStrings.B_TIER_ROUTER, false));
                }

                uint24 cooldown = ITierProvider(local.tierRouter.getProvider(local.blockId)).getTier(
                    local.tier
                ).cooldownWindow;

                if (!LibUtils.isPostDeadline(ts.timestamp, local.b.lastUnpausedAt, cooldown)) {
                    // If cooldownWindow is 0, the block can theoretically
                    // be proved and verified within the same L1 block.
                    break;
                }

                // Update variables
                local.lastVerifiedTransitionId = local.tid;
                local.blockHash = ts.blockHash;
                local.prover = ts.prover;

                LibBonds.creditBond(_state, local.prover, ts.validityBond);

                // Note: We exclusively address the bonds linked to the
                // transition used for verification. While there may exist
                // other transitions for this block, we disregard them entirely.
                // The bonds for these other transitions are burned (more precisely held in custody)
                // either when the transitions are generated or proven. In such cases, both the
                // provers and contesters of those transitions forfeit their bonds.

                if (local.postFork) {
                    emit LibUtils.BlockVerifiedV2({
                        blockId: local.blockId,
                        prover: local.prover,
                        blockHash: local.blockHash,
                        tier: local.tier
                    });
                } else {
                    emit LibUtils.BlockVerified({
                        blockId: local.blockId,
                        prover: local.prover,
                        blockHash: local.blockHash,
                        stateRoot: 0, // DEPRECATED and is always zero.
                        tier: local.tier
                    });
                }

                if (LibUtils.shouldSyncStateRoot(_config.stateRootSyncInternal, local.blockId)) {
                    bytes32 stateRoot = ts.stateRoot;
                    if (stateRoot != 0) {
                        local.syncStateRoot = stateRoot;
                        local.syncBlockId = local.blockId;
                        local.syncTransitionId = local.tid;
                    }
                }

                ++local.blockId;
                ++local.numBlocksVerified;
            }

            if (local.numBlocksVerified != 0) {
                uint64 lastVerifiedBlockId = local.b.lastVerifiedBlockId + local.numBlocksVerified;
                local.slot = lastVerifiedBlockId % _config.blockRingBufferSize;

                _state.slotB.lastVerifiedBlockId = lastVerifiedBlockId;
                _state.blocks[local.slot].verifiedTransitionId = local.lastVerifiedTransitionId;

                if (local.syncStateRoot != 0) {
                    _state.slotA.lastSyncedBlockId = local.syncBlockId;
                    _state.slotA.lastSynecdAt = uint64(block.timestamp);

                    // We write the synced block's verifiedTransitionId to storage
                    if (local.syncBlockId != lastVerifiedBlockId) {
                        local.slot = local.syncBlockId % _config.blockRingBufferSize;
                        _state.blocks[local.slot].verifiedTransitionId = local.syncTransitionId;
                    }

                    // Ask signal service to write cross chain signal
                    ISignalService(_resolver.resolve(LibStrings.B_SIGNAL_SERVICE, false))
                        .syncChainData(
                        _config.chainId,
                        LibStrings.H_STATE_ROOT,
                        local.syncBlockId,
                        local.syncStateRoot
                    );
                }
            }
        }
    }

    function getVerifiedBlockProver(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        uint64 _blockId
    )
        internal
        view
        returns (address)
    {
        (TaikoData.BlockV2 storage blk,) = LibUtils.getBlock(_state, _config, _blockId);

        uint24 tid = blk.verifiedTransitionId;
        if (tid == 0) return address(0);

        return LibUtils.getTransition(_state, _config, _blockId, tid).prover;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "./TaikoData.sol";

/// @title TaikoEvents
/// @notice This abstract contract provides event declarations for the Taiko
/// protocol, which are emitted during block proposal, proof, verification, and
/// Ethereum deposit processes.
/// @dev The events defined here must match the definitions in the corresponding
/// L1 libraries.
/// @custom:security-contact [email protected]
abstract contract TaikoEvents {
    /// @dev Emitted when token is credited back to a user's bond balance.
    event BondCredited(address indexed user, uint256 amount);

    /// @dev Emitted when token is debited from a user's bond balance.
    event BondDebited(address indexed user, uint256 amount);

    /// @notice Emitted when a block is proposed.
    /// @param blockId The ID of the proposed block.
    /// @param assignedProver The address of the assigned prover.
    /// @param livenessBond The liveness bond of the proposed block.
    /// @param meta The metadata of the proposed block.
    /// @param depositsProcessed The EthDeposit array about processed deposits in this proposed
    /// block.
    event BlockProposed(
        uint256 indexed blockId,
        address indexed assignedProver,
        uint96 livenessBond,
        TaikoData.BlockMetadata meta,
        TaikoData.EthDeposit[] depositsProcessed
    );

    /// @notice Emitted when a block is proposed.
    /// @param blockId The ID of the proposed block.
    /// @param meta The metadata of the proposed block.
    event BlockProposedV2(uint256 indexed blockId, TaikoData.BlockMetadataV2 meta);

    /// @notice Emitted when a block's txList is in the calldata.
    /// @param blockId The ID of the proposed block.
    /// @param txList The txList.
    event CalldataTxList(uint256 indexed blockId, bytes txList);

    /// @notice Emitted when a transition is proved.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param prover The prover's address.
    /// @param validityBond The validity bond amount.
    /// @param tier The tier of the proof.
    event TransitionProved(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address prover,
        uint96 validityBond,
        uint16 tier
    );

    /// @notice Emitted when a transition is proved.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param prover The prover's address.
    /// @param validityBond The validity bond amount.
    /// @param tier The tier of the proof.
    /// @param proposedIn The L1 block in which a transition is proved.
    event TransitionProvedV2(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address prover,
        uint96 validityBond,
        uint16 tier,
        uint64 proposedIn
    );

    /// @notice Emitted when a transition is contested.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param contester The contester's address.
    /// @param contestBond The contest bond amount.
    /// @param tier The tier of the proof.
    event TransitionContested(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address contester,
        uint96 contestBond,
        uint16 tier
    );

    /// @notice Emitted when a transition is contested.
    /// @param blockId The block ID.
    /// @param tran The transition data.
    /// @param contester The contester's address.
    /// @param contestBond The contest bond amount.
    /// @param tier The tier of the proof.
    /// @param proposedIn The L1 block in which this L2 block is proposed.
    event TransitionContestedV2(
        uint256 indexed blockId,
        TaikoData.Transition tran,
        address contester,
        uint96 contestBond,
        uint16 tier,
        uint64 proposedIn
    );

    /// @notice Emitted when proving is paused or unpaused.
    /// @param paused The pause status.
    event ProvingPaused(bool paused);

    /// @dev Emitted when a block is verified.
    /// @param blockId The ID of the verified block.
    /// @param prover The prover whose transition is used for verifying the
    /// block.
    /// @param blockHash The hash of the verified block.
    /// @param stateRoot Deprecated and is always zero.
    /// @param tier The tier ID of the proof.
    event BlockVerified(
        uint256 indexed blockId,
        address indexed prover,
        bytes32 blockHash,
        bytes32 stateRoot,
        uint16 tier
    );

    /// @dev Emitted when a block is verified.
    /// @param blockId The ID of the verified block.
    /// @param prover The prover whose transition is used for verifying the
    /// block.
    /// @param blockHash The hash of the verified block.
    /// @param tier The tier ID of the proof.
    event BlockVerifiedV2(
        uint256 indexed blockId, address indexed prover, bytes32 blockHash, uint16 tier
    );

    /// @notice Emitted when some state variable values changed.
    /// @dev This event is currently used by Taiko node/client for block proposal/proving.
    /// @param slotB The SlotB data structure.
    event StateVariablesUpdated(TaikoData.SlotB slotB);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "./TaikoData.sol";

/// @title ITaikoL1
/// @custom:security-contact [email protected]
interface ITaikoL1 {
    /// @notice Proposes a Taiko L2 block.
    /// @param _params Block parameters, currently an encoded BlockParams object.
    /// @param _txList txList data if calldata is used for DA.
    /// @return meta_ The metadata of the proposed L2 block.
    /// @return deposits_ The Ether deposits processed.
    function proposeBlock(
        bytes calldata _params,
        bytes calldata _txList
    )
        external
        payable
        returns (TaikoData.BlockMetadata memory meta_, TaikoData.EthDeposit[] memory deposits_);

    /// @notice Proposes a Taiko L2 block (version 2)
    /// @param _params Block parameters, an encoded BlockParamsV2 object.
    /// @param _txList txList data if calldata is used for DA.
    /// @return meta_ The metadata of the proposed L2 block.
    function proposeBlockV2(
        bytes calldata _params,
        bytes calldata _txList
    )
        external
        returns (TaikoData.BlockMetadataV2 memory meta_);

    /// @notice Proposes multiple Taiko L2 blocks (version 2)
    /// @param _paramsArr A list of encoded BlockParamsV2 objects.
    /// @param _txListArr A list of txList.
    /// @return metaArr_ The metadata objects of the proposed L2 blocks.
    function proposeBlocksV2(
        bytes[] calldata _paramsArr,
        bytes[] calldata _txListArr
    )
        external
        returns (TaikoData.BlockMetadataV2[] memory metaArr_);

    /// @notice Proves or contests a block transition.
    /// @param _blockId The index of the block to prove. This is also used to
    /// select the right implementation version.
    /// @param _input An abi-encoded (TaikoData.BlockMetadata, TaikoData.Transition,
    /// TaikoData.TierProof) tuple.
    function proveBlock(uint64 _blockId, bytes calldata _input) external;

    /// @notice Proves or contests multiple block transitions (version 2)
    /// @param _blockIds The indices of the blocks to prove.
    /// @param _inputs An list of abi-encoded (TaikoData.BlockMetadata, TaikoData.Transition,
    /// TaikoData.TierProof) tuples.
    /// @param _batchProof An abi-encoded TaikoData.TierProof that contains the batch/aggregated
    /// proof for the given blocks.
    function proveBlocks(
        uint64[] calldata _blockIds,
        bytes[] calldata _inputs,
        bytes calldata _batchProof
    )
        external;

    /// @notice Verifies up to a certain number of blocks.
    /// @param _maxBlocksToVerify Max number of blocks to verify.
    function verifyBlocks(uint64 _maxBlocksToVerify) external;

    /// @notice Pause block proving.
    /// @param _pause True if paused.
    function pauseProving(bool _pause) external;

    /// @notice Gets the details of a block.
    /// @param _blockId Index of the block.
    /// @return blk_ The block.
    function getBlockV2(uint64 _blockId) external view returns (TaikoData.BlockV2 memory blk_);

    /// @notice Gets the state transition for a specific block.
    /// @param _blockId Index of the block.
    /// @param _tid The transition id.
    /// @return The state transition data of the block.
    function getTransition(
        uint64 _blockId,
        uint32 _tid
    )
        external
        view
        returns (TaikoData.TransitionState memory);

    /// @notice Deposits Taiko token to be used as bonds.
    /// @param _amount The amount of Taiko token to deposit.
    function depositBond(uint256 _amount) external;

    /// @notice Withdraws Taiko token.
    /// @param _amount The amount of Taiko token to withdraw.
    function withdrawBond(uint256 _amount) external;

    /// @notice Gets the prover that actually proved a verified block.
    /// @param _blockId The index of the block.
    /// @return The prover's address. If the block is not verified yet, address(0) will be returned.
    function getVerifiedBlockProver(uint64 _blockId) external view returns (address);

    /// @notice Gets the configuration of the TaikoL1 contract.
    /// @return Config struct containing configuration parameters.
    function getConfig() external pure returns (TaikoData.Config memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title LibStrings
/// @custom:security-contact [email protected]
library LibStrings {
    bytes32 internal constant B_AUTOMATA_DCAP_ATTESTATION = bytes32("automata_dcap_attestation");
    bytes32 internal constant B_BRIDGE = bytes32("bridge");
    bytes32 internal constant B_BRIDGE_WATCHDOG = bytes32("bridge_watchdog");
    bytes32 internal constant B_BRIDGED_ERC1155 = bytes32("bridged_erc1155");
    bytes32 internal constant B_BRIDGED_ERC20 = bytes32("bridged_erc20");
    bytes32 internal constant B_BRIDGED_ERC721 = bytes32("bridged_erc721");
    bytes32 internal constant B_CHAIN_WATCHDOG = bytes32("chain_watchdog");
    bytes32 internal constant B_ERC1155_VAULT = bytes32("erc1155_vault");
    bytes32 internal constant B_ERC20_VAULT = bytes32("erc20_vault");
    bytes32 internal constant B_ERC721_VAULT = bytes32("erc721_vault");
    bytes32 internal constant B_PRECONF_REGISTRY = bytes32("preconf_registry");
    bytes32 internal constant B_PROVER_ASSIGNMENT = bytes32("PROVER_ASSIGNMENT");
    bytes32 internal constant B_PROVER_SET = bytes32("prover_set");
    bytes32 internal constant B_QUOTA_MANAGER = bytes32("quota_manager");
    bytes32 internal constant B_SGX_WATCHDOG = bytes32("sgx_watchdog");
    bytes32 internal constant B_SIGNAL_SERVICE = bytes32("signal_service");
    bytes32 internal constant B_SP1_REMOTE_VERIFIER = bytes32("sp1_remote_verifier");
    bytes32 internal constant B_TAIKO = bytes32("taiko");
    bytes32 internal constant B_TAIKO_TOKEN = bytes32("taiko_token");
    bytes32 internal constant B_TIER_GUARDIAN = bytes32("tier_guardian");
    bytes32 internal constant B_TIER_GUARDIAN_MINORITY = bytes32("tier_guardian_minority");
    bytes32 internal constant B_TIER_ROUTER = bytes32("tier_router");
    bytes32 internal constant B_TIER_SGX = bytes32("tier_sgx");
    bytes32 internal constant B_TIER_TDX = bytes32("tier_tdx");
    bytes32 internal constant B_TIER_TEE_ANY = bytes32("tier_tee_any");
    bytes32 internal constant B_TIER_ZKVM_RISC0 = bytes32("tier_zkvm_risc0");
    bytes32 internal constant B_TIER_ZKVM_SP1 = bytes32("tier_zkvm_sp1");
    bytes32 internal constant B_TIER_ZKVM_ANY = bytes32("tier_zkvm_any");
    bytes32 internal constant B_TIER_ZKVM_AND_TEE = bytes32("tier_zkvm_and_tee");
    bytes32 internal constant B_RISCZERO_GROTH16_VERIFIER = bytes32("risc0_groth16_verifier");
    bytes32 internal constant B_WITHDRAWER = bytes32("withdrawer");
    bytes32 internal constant H_RETURN_LIVENESS_BOND = keccak256("RETURN_LIVENESS_BOND");
    bytes32 internal constant H_SIGNAL_ROOT = keccak256("SIGNAL_ROOT");
    bytes32 internal constant H_STATE_ROOT = keccak256("STATE_ROOT");
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title LibNetwork
library LibNetwork {
    uint256 internal constant ETHEREUM_MAINNET = 1;
    uint256 internal constant ETHEREUM_ROPSTEN = 2;
    uint256 internal constant ETHEREUM_RINKEBY = 4;
    uint256 internal constant ETHEREUM_GOERLI = 5;
    uint256 internal constant ETHEREUM_KOVAN = 42;
    uint256 internal constant ETHEREUM_HOLESKY = 17_000;
    uint256 internal constant ETHEREUM_SEPOLIA = 11_155_111;

    uint64 internal constant TAIKO_MAINNET = 167_000;
    uint64 internal constant TAIKO_HEKLA = 167_009;

    /// @dev Checks if the chain ID represents an Ethereum testnet.
    /// @param _chainId The chain ID.
    /// @return true if the chain ID represents an Ethereum testnet, false otherwise.
    function isEthereumTestnet(uint256 _chainId) internal pure returns (bool) {
        return _chainId == LibNetwork.ETHEREUM_ROPSTEN || _chainId == LibNetwork.ETHEREUM_RINKEBY
            || _chainId == LibNetwork.ETHEREUM_GOERLI || _chainId == LibNetwork.ETHEREUM_KOVAN
            || _chainId == LibNetwork.ETHEREUM_HOLESKY || _chainId == LibNetwork.ETHEREUM_SEPOLIA;
    }

    /// @dev Checks if the chain ID represents an Ethereum testnet or the Etheruem mainnet.
    /// @param _chainId The chain ID.
    /// @return true if the chain ID represents an Ethereum testnet or the Etheruem mainnet, false
    /// otherwise.
    function isEthereumMainnetOrTestnet(uint256 _chainId) internal pure returns (bool) {
        return _chainId == LibNetwork.ETHEREUM_MAINNET || isEthereumTestnet(_chainId);
    }

    /// @dev Checks if the chain ID represents the Taiko L2 mainnet.
    /// @param _chainId The chain ID.
    /// @return true if the chain ID represents the Taiko L2 mainnet.
    function isTaikoMainnet(uint256 _chainId) internal pure returns (bool) {
        return _chainId == TAIKO_MAINNET;
    }

    /// @dev Checks if the chain ID represents an internal Taiko devnet's base layer.
    /// @param _chainId The chain ID.
    /// @return true if the chain ID represents an internal Taiko devnet's base layer, false
    /// otherwise.
    function isTaikoDevnet(uint256 _chainId) internal pure returns (bool) {
        return _chainId >= 32_300 && _chainId <= 32_400;
    }

    /// @dev Checks if the chain supports Dencun hardfork. Note that this check doesn't need to be
    /// exhaustive.
    /// @param _chainId The chain ID.
    /// @return true if the chain supports Dencun hardfork, false otherwise.
    function isDencunSupported(uint256 _chainId) internal pure returns (bool) {
        return _chainId == LibNetwork.ETHEREUM_MAINNET || _chainId == LibNetwork.ETHEREUM_HOLESKY
            || _chainId == LibNetwork.ETHEREUM_SEPOLIA || isTaikoDevnet(_chainId);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title AddressCache
/// @custom:security-contact [email protected]
abstract contract AddressCache {
    /// @notice This function retrieves the address associated with a given chain ID and name.
    ///  If the address is not found in the cache, it falls back to the provided function.
    /// @param _chainId The chain ID for which the address is to be retrieved.
    /// @param _name The name associated with the address to be retrieved.
    /// @param _fallbackFunc The fallback function to be used if the address is not found in the
    /// cache.
    /// @return The address associated with the given chain ID and name.
    function getAddress(
        uint64 _chainId,
        bytes32 _name,
        function (uint64, bytes32) view returns (address) _fallbackFunc
    )
        internal
        view
        returns (address)
    {
        (bool found, address addr) = getCachedAddress(_chainId, _name);
        return found ? addr : _fallbackFunc(_chainId, _name);
    }

    /// @notice This function retrieves the cached address associated with a given chain ID and
    /// name.
    /// @dev This function is virtual and should be overridden in derived contracts.
    /// @param _chainId The chain ID for which the address is to be retrieved.
    /// @param _name The name associated with the address to be retrieved.
    /// @return found_ A boolean indicating whether the address was found in the cache.
    /// @return addr_ The address associated with the given chain ID and name, if found in the
    /// cache.
    function getCachedAddress(
        uint64 _chainId,
        bytes32 _name
    )
        internal
        pure
        virtual
        returns (bool found_, address addr_);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.0;

import "../../interfaces/draft-IERC1822.sol";
import "../ERC1967/ERC1967Upgrade.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is IERC1822Proxiable, ERC1967Upgrade {
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
        _;
    }

    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate the implementation's compatibility when performing an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
        return _IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeTo(address newImplementation) public virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     *
     * @custom:oz-upgrades-unsafe-allow-reachable delegatecall
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data, true);
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeTo} and {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal override onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.0;

import "./OwnableUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable {
    address private _pendingOwner;

    event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);

    function __Ownable2Step_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable2Step_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner");
        _transferOwnership(sender);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "./IAddressManager.sol";
import "./IAddressResolver.sol";

/// @title AddressResolver
/// @notice See the documentation in {IAddressResolver}.
/// @custom:security-contact [email protected]
abstract contract AddressResolver is IAddressResolver, Initializable {
    /// @notice Address of the AddressManager.
    address public addressManager;
    uint256[49] private __gap;

    error RESOLVER_DENIED();
    error RESOLVER_INVALID_MANAGER();
    error RESOLVER_UNEXPECTED_CHAINID();
    error RESOLVER_ZERO_ADDR(uint64 chainId, bytes32 name);

    /// @dev Modifier that ensures the caller is the resolved address of a given
    /// name.
    /// @param _name The name to check against.
    modifier onlyFromNamed(bytes32 _name) {
        if (msg.sender != resolve(_name, true)) revert RESOLVER_DENIED();
        _;
    }

    /// @dev Modifier that ensures the caller is the resolved address of a given
    /// name, if the name is set.
    /// @param _name The name to check against.
    modifier onlyFromOptionalNamed(bytes32 _name) {
        address addr = resolve(_name, true);
        if (addr != address(0) && msg.sender != addr) revert RESOLVER_DENIED();
        _;
    }

    /// @dev Modifier that ensures the caller is a resolved address to either _name1 or _name2
    /// name.
    /// @param _name1 The first name to check against.
    /// @param _name2 The second name to check against.
    modifier onlyFromNamedEither(bytes32 _name1, bytes32 _name2) {
        if (msg.sender != resolve(_name1, true) && msg.sender != resolve(_name2, true)) {
            revert RESOLVER_DENIED();
        }
        _;
    }

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }

    /// @inheritdoc IAddressResolver
    function resolve(bytes32 _name, bool _allowZeroAddress) public view virtual returns (address) {
        return _resolve(uint64(block.chainid), _name, _allowZeroAddress);
    }

    /// @inheritdoc IAddressResolver
    function resolve(
        uint64 _chainId,
        bytes32 _name,
        bool _allowZeroAddress
    )
        public
        view
        virtual
        returns (address)
    {
        return _resolve(_chainId, _name, _allowZeroAddress);
    }

    /// @dev Initialization method for setting up AddressManager reference.
    /// @param _addressManager Address of the AddressManager.
    function __AddressResolver_init(address _addressManager) internal virtual onlyInitializing {
        if (block.chainid > type(uint64).max) {
            revert RESOLVER_UNEXPECTED_CHAINID();
        }
        addressManager = _addressManager;
    }

    /// @dev Helper method to resolve name-to-address.
    /// @param _chainId The chainId of interest.
    /// @param _name Name whose address is to be resolved.
    /// @param _allowZeroAddress If set to true, does not throw if the resolved
    /// address is `address(0)`.
    /// @return addr_ Address associated with the given name on the specified
    /// chain.
    function _resolve(
        uint64 _chainId,
        bytes32 _name,
        bool _allowZeroAddress
    )
        internal
        view
        returns (address addr_)
    {
        addr_ = _getAddress(_chainId, _name);

        if (!_allowZeroAddress && addr_ == address(0)) {
            revert RESOLVER_ZERO_ADDR(_chainId, _name);
        }
    }

    function _getAddress(uint64 _chainId, bytes32 _name) internal view virtual returns (address) {
        address _addressManager = addressManager;
        if (_addressManager == address(0)) revert RESOLVER_INVALID_MANAGER();

        return IAddressManager(_addressManager).getAddress(_chainId, _name);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "../based/TaikoData.sol";

/// @title IVerifier
/// @notice Defines the function that handles proof verification.
/// @custom:security-contact [email protected]
interface IVerifier {
    struct Context {
        bytes32 metaHash;
        bytes32 blobHash;
        address prover;
        uint64 blockId;
        bool isContesting;
        bool blobUsed;
        address msgSender;
    }

    struct ContextV2 {
        bytes32 metaHash;
        bytes32 blobHash;
        address prover;
        uint64 blockId;
        bool isContesting;
        bool blobUsed;
        address msgSender;
        TaikoData.Transition tran;
    }

    /// @notice Verifies a proof.
    /// @param _ctx The context of the proof verification.
    /// @param _tran The transition to verify.
    /// @param _proof The proof to verify.
    function verifyProof(
        Context calldata _ctx,
        TaikoData.Transition calldata _tran,
        TaikoData.TierProof calldata _proof
    )
        external;

    /// @notice Verifies multiple proofs.
    /// @param _ctxs The array of contexts for the proof verifications.
    /// @param _proof The batch proof to verify.
    function verifyBatchProof(
        ContextV2[] calldata _ctxs,
        TaikoData.TierProof calldata _proof
    )
        external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "src/shared/data/LibSharedData.sol";

/// @title TaikoData
/// @notice This library defines various data structures used in the Taiko
/// protocol.
/// @custom:security-contact [email protected]
library TaikoData {
    /// @dev Struct holding Taiko configuration parameters. See {TaikoConfig}.
    struct Config {
        // ---------------------------------------------------------------------
        // Group 1: General configs
        // ---------------------------------------------------------------------
        // The chain ID of the network where Taiko contracts are deployed.
        uint64 chainId;
        // ---------------------------------------------------------------------
        // Group 2: Block level configs
        // ---------------------------------------------------------------------
        // The maximum number of proposals allowed in a single block.
        uint64 blockMaxProposals;
        // Size of the block ring buffer, allowing extra space for proposals.
        uint64 blockRingBufferSize;
        // The maximum number of verifications allowed when a block is proposed
        // or proved.
        uint64 maxBlocksToVerify;
        // The maximum gas limit allowed for a block.
        uint32 blockMaxGasLimit;
        // ---------------------------------------------------------------------
        // Group 3: Proof related configs
        // ---------------------------------------------------------------------
        // The amount of Taiko token as a prover liveness bond
        uint96 livenessBond;
        // ---------------------------------------------------------------------
        // Group 4: Cross-chain sync
        // ---------------------------------------------------------------------
        // The number of L2 blocks between each L2-to-L1 state root sync.
        uint8 stateRootSyncInternal;
        uint64 maxAnchorHeightOffset;
        // ---------------------------------------------------------------------
        // Group 5: Previous configs in TaikoL2
        // ---------------------------------------------------------------------
        LibSharedData.BaseFeeConfig baseFeeConfig;
        // ---------------------------------------------------------------------
        // Group 6: Others
        // ---------------------------------------------------------------------
        uint64 ontakeForkHeight;
    }

    /// @dev A proof and the tier of proof it belongs to
    struct TierProof {
        uint16 tier;
        bytes data;
    }

    /// @dev Hook and it's data (currently used only during proposeBlock)
    struct HookCall {
        address hook;
        bytes data;
    }

    /// @dev Represents proposeBlock's _data input parameter
    struct BlockParams {
        address assignedProver; // DEPRECATED, value ignored.
        address coinbase;
        bytes32 extraData;
        bytes32 parentMetaHash;
        HookCall[] hookCalls; // DEPRECATED, value ignored.
        bytes signature; // DEPRECATED, value ignored.
    }

    struct BlockParamsV2 {
        address proposer;
        address coinbase;
        bytes32 parentMetaHash;
        uint64 anchorBlockId; // NEW
        uint64 timestamp; // NEW
        uint32 blobTxListOffset; // NEW
        uint32 blobTxListLength; // NEW
        uint8 blobIndex; // NEW
    }

    /// @dev Struct containing data only required for proving a block
    /// Note: On L2, `block.difficulty` is the pseudo name of
    /// `block.prevrandao`, which returns a random number provided by the layer
    /// 1 chain.
    struct BlockMetadata {
        bytes32 l1Hash;
        bytes32 difficulty;
        bytes32 blobHash; //or txListHash (if Blob not yet supported)
        bytes32 extraData;
        bytes32 depositsHash;
        address coinbase; // L2 coinbase,
        uint64 id;
        uint32 gasLimit;
        uint64 timestamp;
        uint64 l1Height;
        uint16 minTier;
        bool blobUsed;
        bytes32 parentMetaHash;
        address sender; // a.k.a proposer
    }

    struct BlockMetadataV2 {
        bytes32 anchorBlockHash; // `_l1BlockHash` in TaikoL2's anchor tx.
        bytes32 difficulty;
        bytes32 blobHash;
        bytes32 extraData;
        address coinbase;
        uint64 id;
        uint32 gasLimit;
        uint64 timestamp;
        uint64 anchorBlockId; // `_l1BlockId` in TaikoL2's anchor tx.
        uint16 minTier;
        bool blobUsed;
        bytes32 parentMetaHash;
        address proposer;
        uint96 livenessBond;
        // Time this block is proposed at, used to check proving window and cooldown window.
        uint64 proposedAt;
        // L1 block number, required/used by node/client.
        uint64 proposedIn;
        uint32 blobTxListOffset;
        uint32 blobTxListLength;
        uint8 blobIndex;
        LibSharedData.BaseFeeConfig baseFeeConfig;
    }

    /// @dev Struct representing transition to be proven.
    struct Transition {
        bytes32 parentHash;
        bytes32 blockHash;
        bytes32 stateRoot;
        bytes32 graffiti; // Arbitrary data that the prover can use for various purposes.
    }

    /// @dev Struct representing state transition data.
    /// 6 slots used.
    struct TransitionState {
        bytes32 key; // slot 1, only written/read for the 1st state transition.
        bytes32 blockHash; // slot 2
        bytes32 stateRoot; // slot 3
        address prover; // slot 4
        uint96 validityBond;
        address contester; // slot 5
        uint96 contestBond;
        uint64 timestamp; // slot 6 (90 bits)
        uint16 tier;
        uint8 __reserved1;
    }

    /// @dev Struct containing data required for verifying a block.
    /// 3 slots used.
    struct Block {
        bytes32 metaHash; // slot 1
        address assignedProver; // slot 2
        uint96 livenessBond;
        uint64 blockId; // slot 3
        uint64 proposedAt; // timestamp
        uint64 proposedIn; // L1 block number, required/used by node/client.
        uint32 nextTransitionId;
        // The ID of the transaction that is used to verify this block. However, if
        // this block is not verified as the last block in a batch, verifiedTransitionId
        // will remain zero.
        uint32 verifiedTransitionId;
    }

    /// @dev Struct containing data required for verifying a block.
    /// 3 slots used.
    struct BlockV2 {
        bytes32 metaHash; // slot 1
        address assignedProver; // slot 2
        uint96 livenessBond;
        uint64 blockId; // slot 3
        // Before the fork, this field is the L1 timestamp when this block is proposed.
        // After the fork, this is the timestamp of the L2 block.
        // In a later fork, we an rename this field to `timestamp`.
        uint64 proposedAt;
        // Before the fork, this field is the L1 block number where this block is proposed.
        // After the fork, this is the L1 block number input for the anchor transaction.
        // In a later fork, we an rename this field to `anchorBlockId`.
        uint64 proposedIn;
        uint24 nextTransitionId;
        bool livenessBondReturned;
        // The ID of the transaction that is used to verify this block. However, if
        // this block is not verified as the last block in a batch, verifiedTransitionId
        // will remain zero.
        uint24 verifiedTransitionId;
    }

    /// @dev Struct representing an Ethereum deposit.
    /// 2 slot used. Currently removed from protocol, but to be backwards compatible, the struct and
    /// return values stayed for now.
    struct EthDeposit {
        address recipient;
        uint96 amount;
        uint64 id;
    }

    /// @dev Forge is only able to run coverage in case the contracts by default
    /// capable of compiling without any optimization (neither optimizer runs,
    /// no compiling --via-ir flag).
    /// In order to resolve stack too deep without optimizations, we needed to
    /// introduce outsourcing vars into structs below.
    struct SlotA {
        uint64 genesisHeight;
        uint64 genesisTimestamp;
        uint64 lastSyncedBlockId;
        uint64 lastSynecdAt; // typo!
    }

    struct SlotB {
        uint64 numBlocks;
        uint64 lastVerifiedBlockId;
        bool provingPaused;
        uint8 __reservedB1;
        uint16 __reservedB2;
        uint32 __reservedB3;
        uint64 lastUnpausedAt;
    }

    /// @dev Struct holding the state variables for the {TaikoL1} contract.
    struct State {
        // Ring buffer for proposed blocks and a some recent verified blocks.
        mapping(uint64 blockId_mod_blockRingBufferSize => BlockV2 blk) blocks;
        // Indexing to transition ids (ring buffer not possible)
        mapping(uint64 blockId => mapping(bytes32 parentHash => uint24 transitionId)) transitionIds;
        // Ring buffer for transitions
        mapping(
            uint64 blockId_mod_blockRingBufferSize
                => mapping(uint32 transitionId => TransitionState ts)
        ) transitions;
        bytes32 __reserve1; // Used as a ring buffer for Ether deposits
        SlotA slotA; // slot 5
        SlotB slotB; // slot 6
        mapping(address account => uint256 bond) bondBalance;
        uint256[43] __gap;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

/// @title LibAddress
/// @dev Provides utilities for address-related operations.
/// @custom:security-contact [email protected]
library LibAddress {
    error ETH_TRANSFER_FAILED();

    /// @dev Sends Ether to the specified address. This method will not revert even if sending ether
    /// fails.
    /// This function is inspired by
    /// https://github.com/nomad-xyz/ExcessivelySafeCall/blob/main/src/ExcessivelySafeCall.sol
    /// @param _to The recipient address.
    /// @param _amount The amount of Ether to send in wei.
    /// @param _gasLimit The max amount gas to pay for this transaction.
    /// @return success_ true if the call is successful, false otherwise.
    function sendEther(
        address _to,
        uint256 _amount,
        uint256 _gasLimit,
        bytes memory _calldata
    )
        internal
        returns (bool success_)
    {
        // Check for zero-address transactions
        if (_to == address(0)) revert ETH_TRANSFER_FAILED();
        // dispatch message to recipient
        // by assembly calling "handle" function
        // we call via assembly to avoid memcopying a very large returndata
        // returned by a malicious contract
        assembly {
            success_ :=
                call(
                    _gasLimit, // gas
                    _to, // recipient
                    _amount, // ether value
                    add(_calldata, 0x20), // inloc
                    mload(_calldata), // inlen
                    0, // outloc
                    0 // outlen
                )
        }
    }

    /// @dev Sends Ether to the specified address. This method will revert if sending ether fails.
    /// @param _to The recipient address.
    /// @param _amount The amount of Ether to send in wei.
    /// @param _gasLimit The max amount gas to pay for this transaction.
    function sendEtherAndVerify(address _to, uint256 _amount, uint256 _gasLimit) internal {
        if (_amount == 0) return;
        if (!sendEther(_to, _amount, _gasLimit, "")) {
            revert ETH_TRANSFER_FAILED();
        }
    }

    /// @dev Sends Ether to the specified address. This method will revert if sending ether fails.
    /// @param _to The recipient address.
    /// @param _amount The amount of Ether to send in wei.
    function sendEtherAndVerify(address _to, uint256 _amount) internal {
        sendEtherAndVerify(_to, _amount, gasleft());
    }

    function supportsInterface(
        address _addr,
        bytes4 _interfaceId
    )
        internal
        view
        returns (bool result_)
    {
        (bool success, bytes memory data) =
            _addr.staticcall(abi.encodeCall(IERC165.supportsInterface, (_interfaceId)));
        if (success && data.length == 32) {
            result_ = abi.decode(data, (bool));
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import "src/shared/common/IAddressResolver.sol";
import "src/shared/common/LibStrings.sol";
import "./TaikoData.sol";

/// @title LibBonds
/// @notice A library that offers helper functions to handle bonds.
/// @custom:security-contact [email protected]
library LibBonds {
    /// @dev Emitted when token is credited back to a user's bond balance.
    event BondCredited(address indexed user, uint256 amount);

    /// @dev Emitted when token is debited from a user's bond balance.
    event BondDebited(address indexed user, uint256 amount);

    /// @dev Deposits Taiko token to be used as bonds.
    /// @param _state Current TaikoData.State.
    /// @param _resolver Address resolver interface.
    /// @param _amount The amount of token to deposit.
    function depositBond(
        TaikoData.State storage _state,
        IAddressResolver _resolver,
        uint256 _amount
    )
        internal
    {
        _state.bondBalance[msg.sender] += _amount;
        _tko(_resolver).transferFrom(msg.sender, address(this), _amount);
    }

    /// @dev Withdraws Taiko token.
    /// @param _state Current TaikoData.State.
    /// @param _resolver Address resolver interface.
    /// @param _amount The amount of token to withdraw.
    function withdrawBond(
        TaikoData.State storage _state,
        IAddressResolver _resolver,
        uint256 _amount
    )
        internal
    {
        _state.bondBalance[msg.sender] -= _amount;
        _tko(_resolver).transfer(msg.sender, _amount);
    }

    /// @dev Debits Taiko tokens as bonds.
    /// @param _state Current TaikoData.State.
    /// @param _resolver Address resolver interface.
    /// @param _user The user address to debit.
    /// @param _amount The amount of token to debit.
    function debitBond(
        TaikoData.State storage _state,
        IAddressResolver _resolver,
        address _user,
        uint256 _amount
    )
        internal
    {
        uint256 balance = _state.bondBalance[_user];

        if (balance >= _amount) {
            unchecked {
                _state.bondBalance[_user] = balance - _amount;
            }
            emit BondDebited(_user, _amount);
        } else {
            _tko(_resolver).transferFrom(_user, address(this), _amount);
        }
    }

    /// @dev Credits Taiko tokens to user's bond balance.
    /// @param _state Current TaikoData.State.
    /// @param _user The user address to credit.
    /// @param _amount The amount of token to credit.
    function creditBond(TaikoData.State storage _state, address _user, uint256 _amount) internal {
        _state.bondBalance[_user] += _amount;
        emit BondCredited(_user, _amount);
    }

    /// @dev Gets a user's current Taiko token bond balance.
    /// @param _state Current TaikoData.State.
    /// @param _user The user address to credit.
    /// @return  The current token balance.
    function bondBalanceOf(
        TaikoData.State storage _state,
        address _user
    )
        internal
        view
        returns (uint256)
    {
        return _state.bondBalance[_user];
    }

    function _tko(IAddressResolver _resolver) private view returns (IERC20) {
        return IERC20(_resolver.resolve(LibStrings.B_TAIKO_TOKEN, false));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import "src/shared/common/IAddressResolver.sol";
import "src/shared/common/LibStrings.sol";
import "src/shared/common/LibMath.sol";
import "../tiers/ITierProvider.sol";
import "../tiers/ITierRouter.sol";
import "./TaikoData.sol";

/// @title LibUtils
/// @notice A library that offers helper functions.
/// @custom:security-contact [email protected]
library LibUtils {
    using LibMath for uint256;

    /// @dev Emitted when a block is verified.
    /// @param blockId The ID of the verified block.
    /// @param prover The prover whose transition is used for verifying the
    /// block.
    /// @param blockHash The hash of the verified block.
    /// @param stateRoot Deprecated and is always zero.
    /// @param tier The tier ID of the proof.
    event BlockVerified(
        uint256 indexed blockId,
        address indexed prover,
        bytes32 blockHash,
        bytes32 stateRoot,
        uint16 tier
    );

    /// @dev Emitted when a block is verified.
    /// @param blockId The ID of the verified block.
    /// @param prover The prover whose transition is used for verifying the
    /// block.
    /// @param blockHash The hash of the verified block.
    /// @param tier The tier ID of the proof.
    event BlockVerifiedV2(
        uint256 indexed blockId, address indexed prover, bytes32 blockHash, uint16 tier
    );

    error L1_BLOCK_MISMATCH();
    error L1_INVALID_BLOCK_ID();
    error L1_INVALID_PARAMS();
    error L1_INVALID_GENESIS_HASH();
    error L1_TRANSITION_NOT_FOUND();
    error L1_UNEXPECTED_TRANSITION_ID();

    /// @notice Initializes the Taiko protocol state.
    /// @param _state The state to initialize.
    /// @param _genesisBlockHash The block hash of the genesis block.
    function init(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        bytes32 _genesisBlockHash
    )
        internal
    {
        if (_genesisBlockHash == 0) revert L1_INVALID_GENESIS_HASH();
        // Init state
        _state.slotA.genesisHeight = uint64(block.number);
        _state.slotA.genesisTimestamp = uint64(block.timestamp);
        _state.slotB.numBlocks = 1;

        // Init the genesis block
        TaikoData.BlockV2 storage blk = _state.blocks[0];
        blk.nextTransitionId = 2;
        blk.proposedAt = uint64(block.timestamp);
        blk.verifiedTransitionId = 1;
        blk.metaHash = bytes32(uint256(1)); // Give the genesis metahash a non-zero value.

        // Init the first state transition
        TaikoData.TransitionState storage ts = _state.transitions[0][1];
        ts.blockHash = _genesisBlockHash;
        ts.prover = address(0);
        ts.timestamp = uint64(block.timestamp);

        if (_config.ontakeForkHeight == 0) {
            emit BlockVerifiedV2({
                blockId: 0,
                prover: address(0),
                blockHash: _genesisBlockHash,
                tier: 0
            });
        } else {
            emit BlockVerified({
                blockId: 0,
                prover: address(0),
                blockHash: _genesisBlockHash,
                stateRoot: 0,
                tier: 0
            });
        }
    }

    /// @dev Retrieves a block based on its ID.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _blockId Id of the block.
    /// @return blk_ The block storage pointer.
    /// @return slot_ The slot value.
    function getBlock(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        uint64 _blockId
    )
        internal
        view
        returns (TaikoData.BlockV2 storage blk_, uint64 slot_)
    {
        slot_ = _blockId % _config.blockRingBufferSize;
        blk_ = _state.blocks[slot_];
        if (blk_.blockId != _blockId) revert L1_INVALID_BLOCK_ID();
    }

    /// @dev Retrieves a block's block hash and state root.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _blockId Id of the block.
    /// @return blockHash_ The block's block hash.
    /// @return stateRoot_ The block's storage root.
    function getBlockInfo(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        uint64 _blockId
    )
        internal
        view
        returns (bytes32 blockHash_, bytes32 stateRoot_, uint64 verifiedAt_)
    {
        (TaikoData.BlockV2 storage blk, uint64 slot) = getBlock(_state, _config, _blockId);

        if (blk.verifiedTransitionId != 0) {
            TaikoData.TransitionState storage transition =
                _state.transitions[slot][blk.verifiedTransitionId];

            blockHash_ = transition.blockHash;
            stateRoot_ = transition.stateRoot;
            verifiedAt_ = transition.timestamp;
        }
    }

    /// @notice This function will revert if the transition is not found.
    /// @dev Retrieves the transition with a given parentHash.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _blockId Id of the block.
    /// @param _tid The transition id.
    /// @return The state transition pointer.
    function getTransition(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        uint64 _blockId,
        uint32 _tid
    )
        internal
        view
        returns (TaikoData.TransitionState storage)
    {
        (TaikoData.BlockV2 storage blk, uint64 slot) = getBlock(_state, _config, _blockId);

        if (_tid == 0 || _tid >= blk.nextTransitionId) revert L1_TRANSITION_NOT_FOUND();
        return _state.transitions[slot][_tid];
    }

    /// @notice This function will revert if the transition is not found. This function will revert
    /// if the transition is not found.
    /// @dev Retrieves the transition with a given parentHash.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _blockId Id of the block.
    /// @param _parentHash Parent hash of the block.
    /// @return The state transition pointer.
    function getTransition(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        uint64 _blockId,
        bytes32 _parentHash
    )
        internal
        view
        returns (TaikoData.TransitionState storage)
    {
        (TaikoData.BlockV2 storage blk, uint64 slot) = getBlock(_state, _config, _blockId);

        uint24 tid = getTransitionId(_state, blk, slot, _parentHash);
        if (tid == 0) revert L1_TRANSITION_NOT_FOUND();

        return _state.transitions[slot][tid];
    }

    /// @notice Gets the state transitions for a batch of block. For transition that doesn't exist,
    /// the corresponding transition state will be empty.
    /// @param _state Current TaikoData.State.
    /// @param _config Actual TaikoData.Config.
    /// @param _blockIds Id array of the blocks.
    /// @param _parentHashes Parent hashes of the blocks.
    /// @return transitions_ The state transition pointer array.
    function getTransitions(
        TaikoData.State storage _state,
        TaikoData.Config memory _config,
        uint64[] calldata _blockIds,
        bytes32[] calldata _parentHashes
    )
        internal
        view
        returns (TaikoData.TransitionState[] memory transitions_)
    {
        if (_blockIds.length == 0 || _blockIds.length != _parentHashes.length) {
            revert L1_INVALID_PARAMS();
        }
        transitions_ = new TaikoData.TransitionState[](_blockIds.length);
        for (uint256 i; i < _blockIds.length; ++i) {
            (TaikoData.BlockV2 storage blk, uint64 slot) = getBlock(_state, _config, _blockIds[i]);
            uint24 tid = getTransitionId(_state, blk, slot, _parentHashes[i]);
            if (tid != 0) {
                transitions_[i] = _state.transitions[slot][tid];
            }
        }
    }

    /// @dev Retrieves the ID of the transition with a given parentHash.
    /// This function will return 0 if the transition is not found.
    function getTransitionId(
        TaikoData.State storage _state,
        TaikoData.BlockV2 storage _blk,
        uint64 _slot,
        bytes32 _parentHash
    )
        internal
        view
        returns (uint24 tid_)
    {
        if (_state.transitions[_slot][1].key == _parentHash) {
            tid_ = 1;
            if (tid_ >= _blk.nextTransitionId) revert L1_UNEXPECTED_TRANSITION_ID();
        } else {
            tid_ = _state.transitionIds[_blk.blockId][_parentHash];
            if (tid_ != 0 && tid_ >= _blk.nextTransitionId) revert L1_UNEXPECTED_TRANSITION_ID();
        }
    }

    function isPostDeadline(
        uint256 _tsTimestamp,
        uint256 _lastUnpausedAt,
        uint256 _windowMinutes
    )
        internal
        view
        returns (bool)
    {
        unchecked {
            uint256 deadline = _tsTimestamp.max(_lastUnpausedAt) + _windowMinutes * 60;
            return block.timestamp >= deadline;
        }
    }

    function shouldVerifyBlocks(
        TaikoData.Config memory _config,
        uint64 _blockId,
        bool _isBlockProposed
    )
        internal
        pure
        returns (bool)
    {
        if (_config.maxBlocksToVerify == 0) return false;

        // Consider each segment of 8 blocks, verification is attempted either on block 3 if it has
        // been
        // proved, or on block 7 if it has been proposed. Over time, the ratio of blocks to
        // verification attempts averages 4:1, meaning each verification attempt typically covers 4
        // blocks. However, considering worst cases caused by blocks being proved out of order, some
        // verification attempts may verify few or no blocks. In such cases, additional
        // verifications are needed to catch up. Consequently, the `maxBlocksToVerify` parameter
        // should be set high enough, for example 16, to allow for efficient catch-up.

        // Now lets use `maxBlocksToVerify` as an input to calculate the size of each block
        // segment, instead of using 8 as a constant.
        uint256 segmentSize = _config.maxBlocksToVerify >> 1;

        if (segmentSize <= 1) return true;

        return _blockId % segmentSize == (_isBlockProposed ? 0 : segmentSize >> 1);
    }

    function shouldSyncStateRoot(
        uint256 _stateRootSyncInternal,
        uint256 _blockId
    )
        internal
        pure
        returns (bool)
    {
        if (_stateRootSyncInternal <= 1) return true;
        unchecked {
            // We could use `_blockId % _stateRootSyncInternal == 0`, but this will break many unit
            // tests as in most of these tests, we test block#1, so by setting
            // config._stateRootSyncInternal = 2, we can keep the tests unchanged.
            return _blockId % _stateRootSyncInternal == _stateRootSyncInternal - 1;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title ISignalService
/// @notice The SignalService contract serves as a secure cross-chain message
/// passing system. It defines methods for sending and verifying signals with
/// merkle proofs. The trust assumption is that the target chain has secure
/// access to the merkle root (such as Taiko injects it in the anchor
/// transaction). With this, verifying a signal is reduced to simply verifying
/// a merkle proof.
/// @custom:security-contact [email protected]
interface ISignalService {
    enum CacheOption {
        CACHE_NOTHING,
        CACHE_SIGNAL_ROOT,
        CACHE_STATE_ROOT,
        CACHE_BOTH
    }

    struct HopProof {
        /// @notice This hop's destination chain ID. If there is a next hop, this ID is the next
        /// hop's source chain ID.
        uint64 chainId;
        /// @notice The ID of a source chain block whose state root has been synced to the hop's
        /// destination chain.
        /// Note that this block ID must be greater than or equal to the block ID where the signal
        /// was sent on the source chain.
        uint64 blockId;
        /// @notice The state root or signal root of the source chain at the above blockId. This
        /// value has been synced to the destination chain.
        /// @dev To get both the blockId and the rootHash, apps should subscribe to the
        /// ChainDataSynced event or query `topBlockId` first using the source chain's ID and
        /// LibStrings.H_STATE_ROOT to get the most recent block ID synced, then call
        /// `getSyncedChainData` to read the synchronized data.
        bytes32 rootHash;
        /// @notice Options to cache either the state roots or signal roots of middle-hops to the
        /// current chain.
        CacheOption cacheOption;
        /// @notice The signal service's account proof. If this value is empty, then `rootHash` will
        /// be used as the signal root, otherwise, `rootHash` will be used as the state root.
        bytes[] accountProof;
        /// @notice The signal service's storage proof.
        bytes[] storageProof;
    }

    /// @notice Emitted when a remote chain's state root or signal root is
    /// synced locally as a signal.
    /// @param chainId The remote chainId.
    /// @param blockId The chain data's corresponding blockId.
    /// @param kind A value to mark the data type.
    /// @param data The remote data.
    /// @param signal The signal for this chain data.
    event ChainDataSynced(
        uint64 indexed chainId,
        uint64 indexed blockId,
        bytes32 indexed kind,
        bytes32 data,
        bytes32 signal
    );

    /// @notice Emitted when a signal is sent.
    /// @param app The address that initiated the signal.
    /// @param signal The signal (message) that was sent.
    /// @param slot The location in storage where this signal is stored.
    /// @param value The value of the signal.
    event SignalSent(address app, bytes32 signal, bytes32 slot, bytes32 value);

    /// @notice Emitted when an address is authorized or deauthorized.
    /// @param addr The address to be authorized or deauthorized.
    /// @param authorized True if authorized, false otherwise.
    event Authorized(address indexed addr, bool authorized);

    /// @notice Send a signal (message) by setting the storage slot to the same value as the signal
    /// itself.
    /// @param _signal The signal (message) to send.
    /// @return slot_ The location in storage where this signal is stored.
    function sendSignal(bytes32 _signal) external returns (bytes32 slot_);

    /// @notice Sync a data from a remote chain locally as a signal. The signal is calculated
    /// uniquely from chainId, kind, and data.
    /// @param _chainId The remote chainId.
    /// @param _kind A value to mark the data type.
    /// @param _blockId The chain data's corresponding blockId
    /// @param _chainData The remote data.
    /// @return signal_ The signal for this chain data.
    function syncChainData(
        uint64 _chainId,
        bytes32 _kind,
        uint64 _blockId,
        bytes32 _chainData
    )
        external
        returns (bytes32 signal_);

    /// @notice Verifies if a signal has been received on the target chain.
    /// @param _chainId The identifier for the source chain from which the
    /// signal originated.
    /// @param _app The address that initiated the signal.
    /// @param _signal The signal (message) to send.
    /// @param _proof Merkle proof that the signal was persisted on the
    /// source chain.
    /// @return numCacheOps_ The number of newly cached items.
    function proveSignalReceived(
        uint64 _chainId,
        address _app,
        bytes32 _signal,
        bytes calldata _proof
    )
        external
        returns (uint256 numCacheOps_);

    /// @notice Verifies if a signal has been received on the target chain.
    /// This is the "readonly" version of proveSignalReceived.
    /// @param _chainId The identifier for the source chain from which the
    /// signal originated.
    /// @param _app The address that initiated the signal.
    /// @param _signal The signal (message) to send.
    /// @param _proof Merkle proof that the signal was persisted on the
    /// source chain.
    function verifySignalReceived(
        uint64 _chainId,
        address _app,
        bytes32 _signal,
        bytes calldata _proof
    )
        external
        view;

    /// @notice Verifies if a particular signal has already been sent.
    /// @param _app The address that initiated the signal.
    /// @param _signal The signal (message) that was sent.
    /// @return true if the signal has been sent, otherwise false.
    function isSignalSent(address _app, bytes32 _signal) external view returns (bool);

    /// @notice Checks if a chain data has been synced.
    /// @param _chainId The remote chainId.
    /// @param _kind A value to mark the data type.
    /// @param _blockId The chain data's corresponding blockId
    /// @param _chainData The remote data.
    /// @return true if the data has been synced, otherwise false.
    function isChainDataSynced(
        uint64 _chainId,
        bytes32 _kind,
        uint64 _blockId,
        bytes32 _chainData
    )
        external
        view
        returns (bool);

    /// @notice Returns the given block's  chain data.
    /// @param _chainId Identifier of the chainId.
    /// @param _kind A value to mark the data type.
    /// @param _blockId The chain data's corresponding block id. If this value is 0, use the top
    /// block id.
    /// @return blockId_ The actual block id.
    /// @return chainData_ The synced chain data.
    function getSyncedChainData(
        uint64 _chainId,
        bytes32 _kind,
        uint64 _blockId
    )
        external
        view
        returns (uint64 blockId_, bytes32 chainData_);

    /// @notice Returns the data to be used for caching slot generation.
    /// @param _chainId Identifier of the chainId.
    /// @param _kind A value to mark the data type.
    /// @param _blockId The chain data's corresponding block id. If this value is 0, use the top
    /// block id.
    /// @return signal_ The signal used for caching slot creation.
    function signalForChainData(
        uint64 _chainId,
        bytes32 _kind,
        uint64 _blockId
    )
        external
        pure
        returns (bytes32 signal_);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822Proxiable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeacon.sol";
import "../../interfaces/IERC1967.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 */
abstract contract ERC1967Upgrade is IERC1967 {
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            Address.isContract(IBeacon(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized != type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title IAddressManager
/// @notice Manages a mapping of (chainId, name) pairs to Ethereum addresses.
/// @custom:security-contact [email protected]
interface IAddressManager {
    /// @notice Gets the address mapped to a specific chainId-name pair.
    /// @dev Note that in production, this method shall be a pure function
    /// without any storage access.
    /// @param _chainId The chainId for which the address needs to be fetched.
    /// @param _name The name for which the address needs to be fetched.
    /// @return Address associated with the chainId-name pair.
    function getAddress(uint64 _chainId, bytes32 _name) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title IAddressResolver
/// @notice This contract acts as a bridge for name-to-address resolution.
/// It delegates the resolution to the AddressManager. By separating the logic,
/// we can maintain flexibility in address management without affecting the
/// resolving process.
/// @dev Note that the address manager should be changed using upgradability, there
/// is no setAddressManager() function to guarantee atomicity across all
/// contracts that are resolvers.
/// @custom:security-contact [email protected]
interface IAddressResolver {
    /// @notice Resolves a name to its address deployed on this chain.
    /// @param _name Name whose address is to be resolved.
    /// @param _allowZeroAddress If set to true, does not throw if the resolved
    /// address is `address(0)`.
    /// @return Address associated with the given name.
    function resolve(bytes32 _name, bool _allowZeroAddress) external view returns (address);

    /// @notice Resolves a name to its address deployed on a specified chain.
    /// @param _chainId The chainId of interest.
    /// @param _name Name whose address is to be resolved.
    /// @param _allowZeroAddress If set to true, does not throw if the resolved
    /// address is `address(0)`.
    /// @return Address associated with the given name on the specified
    /// chain.
    function resolve(
        uint64 _chainId,
        bytes32 _name,
        bool _allowZeroAddress
    )
        external
        view
        returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

library LibSharedData {
    /// @dev Struct that represents L2 basefee configurations
    struct BaseFeeConfig {
        uint8 adjustmentQuotient;
        uint8 sharingPctg;
        uint32 gasIssuancePerSecond;
        uint64 minGasExcess;
        uint32 maxGasIssuancePerBlock;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title LibMath
/// @dev This library offers additional math functions for uint256.
/// @custom:security-contact [email protected]
library LibMath {
    /// @dev Returns the smaller of the two given values.
    /// @param _a The first number to compare.
    /// @param _b The second number to compare.
    /// @return The smaller of the two numbers.
    function min(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return _a > _b ? _b : _a;
    }

    /// @dev Returns the larger of the two given values.
    /// @param _a The first number to compare.
    /// @param _b The second number to compare.
    /// @return The larger of the two numbers.
    function max(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return _a > _b ? _a : _b;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title ITierProvider
/// @notice Defines interface to return tier configuration.
/// @custom:security-contact [email protected]
interface ITierProvider {
    struct Tier {
        bytes32 verifierName;
        uint96 validityBond;
        uint96 contestBond;
        uint24 cooldownWindow; // in minutes
        uint16 provingWindow; // in minutes
        uint8 maxBlocksToVerifyPerProof; // DEPRECATED
    }

    error TIER_NOT_FOUND();

    /// @dev Retrieves the configuration for a specified tier.
    /// @param tierId ID of the tier.
    /// @return Tier struct containing the tier's parameters.
    function getTier(uint16 tierId) external view returns (Tier memory);

    /// @dev Retrieves the IDs of all supported tiers.
    /// Note that the core protocol requires the number of tiers to be smaller
    /// than 256. In reality, this number should be much smaller.
    /// @return The ids of the tiers.
    function getTierIds() external view returns (uint16[] memory);

    /// @dev Determines the minimal tier for a block based on a random input.
    /// @param proposer The address of the block proposer.
    /// @param rand A pseudo-random number.
    /// @return The tier id.
    function getMinTier(address proposer, uint256 rand) external view returns (uint16);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/// @title ITierRouter
/// @notice Defines interface to return an ITierProvider
/// @custom:security-contact [email protected]
interface ITierRouter {
    /// @dev Returns the address of the TierProvider for a given block.
    /// @param blockId ID of the block.
    /// @return The address of the corresponding TierProvider.
    function getProvider(uint256 blockId) external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeacon {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.
 *
 * _Available since v4.8.3._
 */
interface IERC1967 {
    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Emitted when the beacon is changed.
     */
    event BeaconUpgraded(address indexed beacon);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.

pragma solidity ^0.8.0;

/**
 * @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 ERC1967 implementation slot:
 * ```solidity
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
 * _Available since v4.9 for `string`, `bytes`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 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) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

{
  "remappings": [
    "@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/",
    "openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/",
    "@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/",
    "openzeppelin/contracts/=node_modules/@openzeppelin/contracts/",
    "@risc0/contracts/=node_modules/risc0-ethereum/contracts/src/",
    "@solady/=node_modules/solady/",
    "@optimism/=node_modules/optimism/",
    "@sp1-contracts/=node_modules/sp1-contracts/contracts/",
    "forge-std/=node_modules/forge-std/",
    "ds-test/=node_modules/ds-test/src/",
    "@p256-verifier/contracts/=node_modules/p256-verifier/src/",
    "src/=contracts/",
    "test/=test/",
    "script/=script/",
    "optimism/=node_modules/optimism/",
    "p256-verifier/=node_modules/p256-verifier/",
    "risc0-ethereum/=node_modules/risc0-ethereum/",
    "solady/=node_modules/solady/",
    "sp1-contracts/=node_modules/sp1-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false,
  "libraries": {
    "contracts/layer1/based/LibProposing.sol": {
      "LibProposing": "0x98371B6283aCe937b0367764Cc49e4C3EDc29D14"
    },
    "contracts/layer1/based/LibProving.sol": {
      "LibProving": "0x7A3d8e58D9010945FD7541665eA384C7287dB6cb"
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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TaikoData.BlockMetadataV2[]","name":"metaArr_","type":"tuple[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64","name":"_blockId","type":"uint64"},{"internalType":"bytes","name":"_input","type":"bytes"}],"name":"proveBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64[]","name":"_blockIds","type":"uint64[]"},{"internalType":"bytes[]","name":"_inputs","type":"bytes[]"},{"internalType":"bytes","name":"_batchProof","type":"bytes"}],"name":"proveBlocks","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"proxiableUUID","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint64","name":"_chainId","type":"uint64"},{"internalType":"bytes32","name":"_name","type":"bytes32"},{"internalType":"bool","name":"_allowZeroAddress","type":"bool"}],"name":"resolve","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_name","type":"bytes32"},{"internalType":"bool","name":"_allowZeroAddress","type":"bool"}],"name":"resolve","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"state","outputs":[{"internalType":"bytes32","name":"__reserve1","type":"bytes32"},{"components":[{"internalType":"uint64","name":"genesisHeight","type":"uint64"},{"internalType":"uint64","name":"genesisTimestamp","type":"uint64"},{"internalType":"uint64","name":"lastSyncedBlockId","type":"uint64"},{"internalType":"uint64","name":"lastSynecdAt","type":"uint64"}],"internalType":"struct TaikoData.SlotA","name":"slotA","type":"tuple"},{"components":[{"internalType":"uint64","name":"numBlocks","type":"uint64"},{"internalType":"uint64","name":"lastVerifiedBlockId","type":"uint64"},{"internalType":"bool","name":"provingPaused","type":"bool"},{"internalType":"uint8","name":"__reservedB1","type":"uint8"},{"internalType":"uint16","name":"__reservedB2","type":"uint16"},{"internalType":"uint32","name":"__reservedB3","type":"uint32"},{"internalType":"uint64","name":"lastUnpausedAt","type":"uint64"}],"internalType":"struct TaikoData.SlotB","name":"slotB","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint64","name":"_maxBlocksToVerify","type":"uint64"}],"name":"verifyBlocks","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawBond","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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