Contract 0x000000000066b3aED7Ae8263588dA67fF381FfCa 15

 
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0xd93dc5b6d4662ac2aa76d9da30925150f1d82df7d42caa45eb7e90bf38ffeab7Set Urls982985792023-05-14 21:38:52283 days 1 hr ago0x2ce6bd653220436eb8f35e146b0dd1a6013e97a7 IN  0x000000000066b3aed7ae8263588da67ff381ffca0 ETH0.0001776570210.001048154
0x32176dff233c58f52d2903053ed1bcbee08773b2c99cd11b7b71e01cac30cddaSet Ownership Si...982985192023-05-14 21:38:21283 days 1 hr ago0x2ce6bd653220436eb8f35e146b0dd1a6013e97a7 IN  0x000000000066b3aed7ae8263588da67ff381ffca0 ETH0.0001516691980.001048154
0x07c9d70ac9d223223b5f43edf5d2c9dbba0c180c4832ce176f5dc16787da9a88Set Delegation R...982984732023-05-14 21:38:06283 days 1 hr ago0x2ce6bd653220436eb8f35e146b0dd1a6013e97a7 IN  0x000000000066b3aed7ae8263588da67ff381ffca0 ETH0.0001485536570.001048154
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0xf626cf8a2b7536a4a2f03858f7bdf68c316158cee8035fa5625612c0b1550d7e789165052023-03-06 16:45:13352 days 6 hrs ago 0x0000000000ffe8b47b3e2130213b802212439497  Contract Creation0 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
EssentialForwarder

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 12 : EssentialEIP712Base.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}). 0xEssential removes the chainId from domainSeparator, instead including chainId as
 * a bytes32 representation as the salt. This allows wallets to sign from any network, while still ensuring signatures
 * can only be used on the target chain.
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EssentialEIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256("EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)");
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() public view returns (bytes32) {
        if (block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, address(this), bytes32(getChainId())));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }

    function getChainId() public view returns (uint256 id) {
        assembly {
            id := chainid()
        }
    }
}

File 2 of 12 : EssentialForwarder.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "./EssentialEIP712Base.sol";
import "./SignedOwnershipProof.sol";
import "./IForwardRequest.sol";
import "./IDelegationRegistry.sol";

/// @title EssentialForwarder
/// @author 0xEssential
/// @notice EIP-2771 based MetaTransaction Forwarding Contract with EIP-3668 OffchainLookup for cross-chain token gating
/// @dev Allows a Relayer to submit meta-transactions that utilize an NFT (i.e. in a game) on behalf of EOAs. Transactions
///      are only executed if the Relayer provides a signature from a trusted signer. The signature must include the current
///      owner of the Layer 1 NFT being used, or a Burner EOA the owner has authorized to use its NFTs.
///
///      EssentialForwarder can be used to build Layer 2 games that use Layer 1 NFTs without bridging and with superior UX.
///      End users can specify a Burner EOA from their primary EOA, and then use that burner address to play games.
///      The Burner EOA can then sign messages for game moves without user interaction without any risk to the NFTs or other
///      assets owned by the primary EOA.
contract EssentialForwarder is EssentialEIP712, AccessControl, SignedOwnershipProof {
    using ECDSA for bytes32;
    
    error Unauthorized();
    error InvalidSignature();
    error InvalidOwnership();
    error InternalTransactionFailure();
    error OffchainLookup(address sender, string[] urls, bytes callData, bytes4 callbackFunction, bytes extraData);

    bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");

    bytes32 private constant ERC721_TYPEHASH =
        keccak256(
            "ForwardRequest(address to,address from,address authorizer,address nftContract,uint256 nonce,uint256 nftChainId,uint256 nftTokenId,uint256 targetChainId,bytes data)"
        );
    bytes32 private constant NATIVE_TYPEHASH =
        keccak256(
            "MinimalRequest(address to,address from,address authorizer,uint256 nonce,uint256 targetChainId,bytes data)"
        );

    mapping(address => uint256) internal _nonces;
    IDelegationRegistry public DelegationRegistry;

    string[] public urls;

    constructor(address initialOwner) EssentialEIP712("EssentialForwarder", "0.0.1") {
        _setupRole(DEFAULT_ADMIN_ROLE, initialOwner);
        _setupRole(ADMIN_ROLE, initialOwner);
    }

    /// @notice Set OffchainLookup urls
    function setUrls(string[] memory _urls) external onlyRole(ADMIN_ROLE) {
        urls = _urls;
    }

    /// @notice Change the ownership signer
    function setOwnershipSigner(address newSigner) external onlyRole(ADMIN_ROLE) {
        _setOwnershipSigner(newSigner);
    }

    /// @notice Change the Delegation source
    function setDelegationRegistry(address registry) external onlyRole(ADMIN_ROLE) {
        DelegationRegistry = IDelegationRegistry(registry);
    }

    /// @notice Get current nonce for EOA
    function getNonce(address from) external view returns (uint256) {
        return _nonces[from];
    }

    /// @notice Submit a meta-tx request and signature to check validity and receive
    /// a response with data useful for fetching a trusted proof per EIP-3668.
    /// @dev Per EIP-3668, a valid signature will cause a revert with useful error params.
    function preflight(IForwardRequest.ERC721ForwardRequest calldata req, bytes calldata signature) public view {
        // If the signature is valid for the request and state, the client will receive
        // the OffchainLookup error with parameters suitable for an https call to a JSON
        // RPC server.

        if (!verifyRequest(req, signature)) revert InvalidSignature();

        revert OffchainLookup(
            address(this),
            urls,
            abi.encode(
                req.from,
                req.authorizer,
                _nonces[req.from],
                req.nftChainId,
                req.nftContract,
                req.nftTokenId,
                block.chainid,
                block.timestamp
            ),
            this.executeWithProof.selector,
            abi.encode(block.timestamp, req, signature)
        );
    }

    /// @notice For standard transactions that verify NFT ownership, call this view function
    /// with the ERC721ForwardRequest representation of the transaction to be submitted. You'll
    /// receive a revert with data useful for fetching a trusted proof per EIP-3668.
    /// @dev Per EIP-3668, a valid signature will cause a revert with useful error params.
    function preflightNative(IForwardRequest.ERC721ForwardRequest calldata req) public view {
        // If the signature is valid for the request and state, the client will receive
        // the OffchainLookup error with parameters suitable for an https call to a JSON
        // RPC server.

        revert OffchainLookup(
            address(this),
            urls,
            abi.encode(
                req.from,
                req.authorizer,
                _nonces[req.from],
                req.nftChainId,
                req.nftContract,
                req.nftTokenId,
                block.chainid,
                block.timestamp
            ),
            this.executeWithProofNative.selector,
            abi.encode(block.timestamp, req)
        );
    }

    /// @notice Re-submit a valid meta-tx request with trust-minimized proof to execute the transaction.
    /// @dev The RPC call and re-submission should be handled by your Relayer client
    /// @param response The unaltered bytes reponse from a call made to an RPC url from OffchainLookup::urls
    /// @param extraData The unaltered bytes from OffchainLookup::extraData
    function executeWithProof(bytes calldata response, bytes calldata extraData)
        external
        payable
        returns (bytes memory)
    {
        (uint256 timestamp, IForwardRequest.ERC721ForwardRequest memory req, bytes memory signature) = abi.decode(
            extraData,
            (uint256, IForwardRequest.ERC721ForwardRequest, bytes)
        );

        if (!verifyRequest(req, signature)) revert InvalidSignature();
        if (!verifyOwnershipProof(req, response, timestamp)) revert InvalidOwnership();

        ++_nonces[req.from];

        return _executeWithProof(req);
    }

    function executeWithProofNative(bytes calldata response, bytes calldata extraData)
        external
        payable
        returns (bytes memory)
    {
        (uint256 timestamp, IForwardRequest.ERC721ForwardRequest memory req) = abi.decode(
            extraData,
            (uint256, IForwardRequest.ERC721ForwardRequest)
        );

        if (!verifyOwnershipProof(req, response, timestamp)) revert InvalidOwnership();

        ++_nonces[msg.sender];


        return _executeWithProof(req);        
    }

    function _executeWithProof(IForwardRequest.ERC721ForwardRequest memory req) internal returns (bytes memory) {

        (bool success, bytes memory returndata) = req.to.call{gas: req.gas, value: 0}(
            // Implementation contracts may use EssentialERC2771Context::_msgNFT()
            // to access trusted NFT data. Calldata is compatible with OZ::_msgSender()
            abi.encodePacked(req.data, req.nftChainId, req.nftTokenId, req.nftContract, req.authorizer)
        );

        // Validate that the relayer has sent enough gas for the call.
        // See https://ronan.eth.link/blog/ethereum-gas-dangers/
        assert(gasleft() > req.gas / 63);
        if(!success) revert InternalTransactionFailure();
        
        return returndata;
    }


    /// @notice Submit a meta-tx request where a proof of ownership is not required.
    /// @dev Useful for transactions where the signer is not using a specific NFT, but values
    /// are still required in the signature - use the zero address for nftContract and 0 for tokenId
    function verify(IForwardRequest.ForwardRequest calldata req, bytes calldata signature)
        public
        view
        returns (bool)
    {
        return verifyUnauthenticatedRequest(req, signature);
    }

    function execute(IForwardRequest.ForwardRequest calldata req, bytes calldata signature)
        public
        payable
        returns (bytes memory)
    {
        if (!verifyUnauthenticatedRequest(req, signature)) revert InvalidSignature();

        _nonces[req.from] = req.nonce + 1;

        (bool success, bytes memory returndata) = req.to.call{gas: req.gas, value: req.value}(
            abi.encodePacked(req.data, uint256(0), uint256(0), address(0), req.authorizer)
        );

        // Validate that the relayer has sent enough gas for the call.
        // See https://ronan.eth.link/blog/ethereum-gas-dangers/
        assert(gasleft() > req.gas / 63);
        if(!success) revert InternalTransactionFailure();
        
        return returndata;
    }

    function verifyRequest(IForwardRequest.ERC721ForwardRequest memory req, bytes memory signature)
        internal
        view
        returns (bool)
    {
        address signer = _hashTypedDataV4(
            keccak256(
                abi.encode(
                    ERC721_TYPEHASH,
                    req.to,
                    req.from,
                    req.authorizer,
                    req.nftContract,
                    req.nonce,
                    req.nftChainId,
                    req.nftTokenId,
                    req.targetChainId,
                    keccak256(req.data)
                )
            )
        ).recover(signature);
        return _nonces[req.from] == req.nonce && signer == req.from && req.targetChainId == block.chainid;
    }

    function verifyUnauthenticatedRequest(IForwardRequest.ForwardRequest memory req, bytes memory signature)
        internal
        view
        returns (bool)
    {
        address signer = _hashTypedDataV4(
            keccak256(
                abi.encode(
                    NATIVE_TYPEHASH,
                    req.to,
                    req.from,
                    req.authorizer,
                    req.nonce,
                    req.targetChainId,
                    keccak256(req.data)
                )
            )
        ).recover(signature);
        return _nonces[req.from] == req.nonce && signer == req.from && req.targetChainId == block.chainid;
    }
}

File 3 of 12 : IDelegationRegistry.sol
// SPDX-License-Identifier: CC0-1.0
pragma solidity ^0.8.17;

/**
 * @title An immutable registry contract to be deployed as a standalone primitive
 * @dev See EIP-5639, new project launches can read previous cold wallet -> hot wallet delegations
 * from here and integrate those permissions into their flow
 */
interface IDelegationRegistry {
    /// @notice Delegation type
    enum DelegationType {
        NONE,
        ALL,
        CONTRACT,
        TOKEN
    }

    /// @notice Info about a single delegation, used for onchain enumeration
    struct DelegationInfo {
        DelegationType type_;
        address vault;
        address delegate;
        address contract_;
        uint256 tokenId;
    }

    /// @notice Info about a single contract-level delegation
    struct ContractDelegation {
        address contract_;
        address delegate;
    }

    /// @notice Info about a single token-level delegation
    struct TokenDelegation {
        address contract_;
        uint256 tokenId;
        address delegate;
    }

    /// @notice Emitted when a user delegates their entire wallet
    event DelegateForAll(address vault, address delegate, bool value);

    /// @notice Emitted when a user delegates a specific contract
    event DelegateForContract(address vault, address delegate, address contract_, bool value);

    /// @notice Emitted when a user delegates a specific token
    event DelegateForToken(address vault, address delegate, address contract_, uint256 tokenId, bool value);

    /// @notice Emitted when a user revokes all delegations
    event RevokeAllDelegates(address vault);

    /// @notice Emitted when a user revoes all delegations for a given delegate
    event RevokeDelegate(address vault, address delegate);

    /**
     * -----------  WRITE -----------
     */

    /**
     * @notice Allow the delegate to act on your behalf for all contracts
     * @param delegate The hotwallet to act on your behalf
     * @param value Whether to enable or disable delegation for this address, true for setting and false for revoking
     */
    function delegateForAll(address delegate, bool value) external;

    /**
     * @notice Allow the delegate to act on your behalf for a specific contract
     * @param delegate The hotwallet to act on your behalf
     * @param contract_ The address for the contract you're delegating
     * @param value Whether to enable or disable delegation for this address, true for setting and false for revoking
     */
    function delegateForContract(
        address delegate,
        address contract_,
        bool value
    ) external;

    /**
     * @notice Allow the delegate to act on your behalf for a specific token
     * @param delegate The hotwallet to act on your behalf
     * @param contract_ The address for the contract you're delegating
     * @param tokenId The token id for the token you're delegating
     * @param value Whether to enable or disable delegation for this address, true for setting and false for revoking
     */
    function delegateForToken(
        address delegate,
        address contract_,
        uint256 tokenId,
        bool value
    ) external;

    /**
     * @notice Revoke all delegates
     */
    function revokeAllDelegates() external;

    /**
     * @notice Revoke a specific delegate for all their permissions
     * @param delegate The hotwallet to revoke
     */
    function revokeDelegate(address delegate) external;

    /**
     * @notice Remove yourself as a delegate for a specific vault
     * @param vault The vault which delegated to the msg.sender, and should be removed
     */
    function revokeSelf(address vault) external;

    /**
     * -----------  READ -----------
     */

    /**
     * @notice Returns all active delegations a given delegate is able to claim on behalf of
     * @param delegate The delegate that you would like to retrieve delegations for
     * @return info Array of DelegationInfo structs
     */
    function getDelegationsByDelegate(address delegate) external view returns (DelegationInfo[] memory);

    /**
     * @notice Returns an array of wallet-level delegates for a given vault
     * @param vault The cold wallet who issued the delegation
     * @return addresses Array of wallet-level delegates for a given vault
     */
    function getDelegatesForAll(address vault) external view returns (address[] memory);

    /**
     * @notice Returns an array of contract-level delegates for a given vault and contract
     * @param vault The cold wallet who issued the delegation
     * @param contract_ The address for the contract you're delegating
     * @return addresses Array of contract-level delegates for a given vault and contract
     */
    function getDelegatesForContract(address vault, address contract_) external view returns (address[] memory);

    /**
     * @notice Returns an array of contract-level delegates for a given vault's token
     * @param vault The cold wallet who issued the delegation
     * @param contract_ The address for the contract holding the token
     * @param tokenId The token id for the token you're delegating
     * @return addresses Array of contract-level delegates for a given vault's token
     */
    function getDelegatesForToken(
        address vault,
        address contract_,
        uint256 tokenId
    ) external view returns (address[] memory);

    /**
     * @notice Returns all contract-level delegations for a given vault
     * @param vault The cold wallet who issued the delegations
     * @return delegations Array of ContractDelegation structs
     */
    function getContractLevelDelegations(address vault) external view returns (ContractDelegation[] memory delegations);

    /**
     * @notice Returns all token-level delegations for a given vault
     * @param vault The cold wallet who issued the delegations
     * @return delegations Array of TokenDelegation structs
     */
    function getTokenLevelDelegations(address vault) external view returns (TokenDelegation[] memory delegations);

    /**
     * @notice Returns true if the address is delegated to act on the entire vault
     * @param delegate The hotwallet to act on your behalf
     * @param vault The cold wallet who issued the delegation
     */
    function checkDelegateForAll(address delegate, address vault) external view returns (bool);

    /**
     * @notice Returns true if the address is delegated to act on your behalf for a token contract or an entire vault
     * @param delegate The hotwallet to act on your behalf
     * @param contract_ The address for the contract you're delegating
     * @param vault The cold wallet who issued the delegation
     */
    function checkDelegateForContract(
        address delegate,
        address vault,
        address contract_
    ) external view returns (bool);

    /**
     * @notice Returns true if the address is delegated to act on your behalf for a specific token, the token's contract or an entire vault
     * @param delegate The hotwallet to act on your behalf
     * @param contract_ The address for the contract you're delegating
     * @param tokenId The token id for the token you're delegating
     * @param vault The cold wallet who issued the delegation
     */
    function checkDelegateForToken(
        address delegate,
        address vault,
        address contract_,
        uint256 tokenId
    ) external view returns (bool);
}

File 4 of 12 : IForwardRequest.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.17;

interface IForwardRequest {
    struct ERC721ForwardRequest {
        address from; // Externally-owned account (EOA) signing the request.
        address authorizer; // Externally-owned account (EOA) that authorized from account in PlaySession.
        address to; // Destination address, normally a smart contract for an nFight game.
        address nftContract; // The address of the NFT contract for the token being used.
        uint256 nftTokenId; // The tokenId of the NFT being used
        uint256 nftChainId; // The chainId of the NFT neing used
        uint256 targetChainId; // The chainId where the Forwarder and implementation contract are deployed.
        uint256 value; // Amount of ether to transfer to the destination.
        uint256 gas; // Amount of gas limit to set for the execution.
        uint256 nonce; // On-chain tracked nonce of a transaction.
        bytes data; // (Call)data to be sent to the destination.
    }

    struct ForwardRequest {
        address from; // Externally-owned account (EOA) signing the request.
        address authorizer; // Externally-owned account (EOA) that authorized from account in PlaySession.
        address to; // Destination address, normally a smart contract for an nFight game.
        uint256 targetChainId; // The chainId where the Forwarder and implementation contract are deployed.
        uint256 value; // Amount of ether to transfer to the destination.
        uint256 gas; // Amount of gas limit to set for the execution.
        uint256 nonce; // On-chain tracked nonce of a transaction.
        bytes data; // (Call)data to be sent to the destination.
    }

    struct MetaTransaction {
        uint256 nonce;
        address from;
        bytes functionSignature;
    }

    struct PlaySession {
        address authorized; // Burner EOA that is authorized to play with NFTs by owner EOA.
        uint256 expiresAt; // block timestamp when the session is invalidated.
    }

    struct NFT {
        address contractAddress;
        uint256 tokenId;
        uint256 chainId;
    }
}

File 5 of 12 : SignedOwnershipProof.sol
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "./IForwardRequest.sol";
import "./EssentialEIP712Base.sol" as EssentialEIP712Base;

/// @title SignedOwnershipProof
/// @author Sammy Bauch
/// @dev Based on SignedAllowance by Simon Fremaux (@dievardump)
/// see https://github.com/dievardump/signed-minting

contract SignedOwnershipProof {
    using ECDSA for bytes32;

    // address used to sign proof of ownership
    address private _ownershipSigner;

    /// @notice Construct message that _ownershipSigner must sign as ownership proof
    /// @dev The RPC server uses this view function to create the ownership proof
    /// @param signer the address that currently owns the L1 NFT
    /// @param authorizer the address that currently owns the L1 NFT
    /// @param nonce the meta-transaction nonce for account
    /// @param nftChainId the chainId for the nftContract
    /// @param nftContract the contract address for the NFT being utilized
    /// @param tokenId the tokenId from nftContract for the NFT being utilized
    /// @param timestamp the timestamp from the OffchainLookup error
    /// @return the message _ownershipSigner should sign
    function createMessage(
        address signer,
        address authorizer,
        uint256 nonce,
        uint256 nftChainId,
        address nftContract,
        uint256 tokenId,
        uint256 timestamp
    ) public view returns (bytes32) {
        return
            keccak256(
                abi.encode(signer, authorizer, nonce, nftChainId, nftContract, tokenId, block.chainid, timestamp)
            );
    }

    /// @notice Verify signed OffchainLookup proof against meta-tx request data
    /// @dev Ensures that _ownershipSigner signed a message containing (nftOwner OR authorized address, nonce, nftContract, tokenId)
    /// @param req structured data submitted by EOA making a meta-transaction request
    /// @param signature the signature proof created by the ownership signer EOA
    function verifyOwnershipProof(
        IForwardRequest.ERC721ForwardRequest memory req,
        bytes memory signature,
        uint256 timestamp
    ) public view returns (bool) {
        // TODO: what are the drift requirements here?
        require(block.timestamp - timestamp < 10 minutes, "Stale");

        bytes32 message = createMessage(
            req.from,
            req.authorizer,
            req.nonce,
            req.nftChainId,
            req.nftContract,
            req.nftTokenId,
            timestamp
        ).toEthSignedMessageHash();

        return message.recover(signature) == _ownershipSigner;
    }

    /// @notice Get ownershipSigner address
    /// @return the ownership proof signer address
    function ownershipSigner() public view returns (address) {
        return _ownershipSigner;
    }

    /// @dev This signer should hold no assets and is only used for signing L1 ownership proofs.
    /// @param newSigner the new signer's public address
    function _setOwnershipSigner(address newSigner) internal {
        _ownershipSigner = newSigner;
    }
}

File 6 of 12 : AccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

File 7 of 12 : IAccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 8 of 12 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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 Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

File 9 of 12 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

File 10 of 12 : ECDSA.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

File 11 of 12 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 12 of 12 : IERC165.sol
// 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);
}

Settings
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    "@openzeppelin/=node_modules/@openzeppelin/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "eth-gas-reporter/=node_modules/eth-gas-reporter/",
    "forge-std/=lib/forge-std/src/",
    "hardhat-deploy/=node_modules/hardhat-deploy/",
    "hardhat/=node_modules/hardhat/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"initialOwner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"InternalTransactionFailure","type":"error"},{"inputs":[],"name":"InvalidOwnership","type":"error"},{"inputs":[],"name":"InvalidSignature","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"string[]","name":"urls","type":"string[]"},{"internalType":"bytes","name":"callData","type":"bytes"},{"internalType":"bytes4","name":"callbackFunction","type":"bytes4"},{"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"OffchainLookup","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"inputs":[],"name":"ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DelegationRegistry","outputs":[{"internalType":"contract IDelegationRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"_domainSeparatorV4","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"signer","type":"address"},{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"nftChainId","type":"uint256"},{"internalType":"address","name":"nftContract","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"createMessage","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"gas","type":"uint256"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwardRequest.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"execute","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"response","type":"bytes"},{"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"executeWithProof","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"response","type":"bytes"},{"internalType":"bytes","name":"extraData","type":"bytes"}],"name":"executeWithProofNative","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getChainId","outputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"}],"name":"getNonce","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ownershipSigner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"address","name":"nftContract","type":"address"},{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"nftChainId","type":"uint256"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"gas","type":"uint256"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwardRequest.ERC721ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"preflight","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"address","name":"nftContract","type":"address"},{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"nftChainId","type":"uint256"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"gas","type":"uint256"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwardRequest.ERC721ForwardRequest","name":"req","type":"tuple"}],"name":"preflightNative","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"registry","type":"address"}],"name":"setDelegationRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newSigner","type":"address"}],"name":"setOwnershipSigner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string[]","name":"_urls","type":"string[]"}],"name":"setUrls","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"urls","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"gas","type":"uint256"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwardRequest.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"verify","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"authorizer","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"address","name":"nftContract","type":"address"},{"internalType":"uint256","name":"nftTokenId","type":"uint256"},{"internalType":"uint256","name":"nftChainId","type":"uint256"},{"internalType":"uint256","name":"targetChainId","type":"uint256"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"gas","type":"uint256"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwardRequest.ERC721ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"verifyOwnershipProof","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000002ce6bd653220436eb8f35e146b0dd1a6013e97a7

-----Decoded View---------------
Arg [0] : initialOwner (address): 0x2cE6BD653220436eB8f35E146B0Dd1a6013E97a7

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000002ce6bd653220436eb8f35e146b0dd1a6013e97a7


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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