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Execute | 17154671 | 655 days ago | IN | 0 ETH | 0.00153897 | ||||
Execute | 17132719 | 658 days ago | IN | 0 ETH | 0.00505951 | ||||
Execute | 17126352 | 659 days ago | IN | 0 ETH | 0.00258363 | ||||
Execute | 17125976 | 659 days ago | IN | 0 ETH | 0.00306142 | ||||
Execute | 17125264 | 659 days ago | IN | 0 ETH | 0.00551437 | ||||
Register Domain ... | 17123395 | 660 days ago | IN | 0 ETH | 0.00166556 | ||||
Register Domain ... | 16814541 | 703 days ago | IN | 0 ETH | 0.00103711 | ||||
Register Request... | 16814540 | 703 days ago | IN | 0 ETH | 0.00125943 |
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16814539 | 703 days ago | Contract Creation | 0 ETH |
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Contract Source Code Verified (Exact Match)
Contract Name:
Forwarder
Compiler Version
v0.8.7+commit.e28d00a7
Contract Source Code (Solidity Standard Json-Input format)
pragma solidity ^0.8.0; pragma abicoder v2; // solhint-disable not-rely-on-time // SPDX-License-Identifier: GPL-3.0-only import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/utils/introspection/ERC165.sol"; import "./IForwarder.sol"; /** * @title The Forwarder Implementation * @notice This implementation of the `IForwarder` interface uses ERC-712 signatures and stored nonces for verification. */ contract Forwarder is IForwarder, ERC165 { using ECDSA for bytes32; address private constant DRY_RUN_ADDRESS = 0x0000000000000000000000000000000000000000; string public constant GENERIC_PARAMS = "address from,address to,uint256 value,uint256 gas,uint256 nonce,bytes data,uint256 validUntilTime"; string public constant EIP712_DOMAIN_TYPE = "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"; mapping(bytes32 => bool) public typeHashes; mapping(bytes32 => bool) public domains; // Nonces of senders, used to prevent replay attacks mapping(address => uint256) private nonces; // solhint-disable-next-line no-empty-blocks receive() external payable {} /// @inheritdoc IForwarder function getNonce(address from) public view override returns (uint256) { return nonces[from]; } constructor() { string memory requestType = string(abi.encodePacked("ForwardRequest(", GENERIC_PARAMS, ")")); registerRequestTypeInternal(requestType); } /// @inheritdoc IERC165 function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) { return interfaceId == type(IForwarder).interfaceId || super.supportsInterface(interfaceId); } /// @inheritdoc IForwarder function verify( ForwardRequest calldata req, bytes32 domainSeparator, bytes32 requestTypeHash, bytes calldata suffixData, bytes calldata sig) external override view { _verifyNonce(req); _verifySig(req, domainSeparator, requestTypeHash, suffixData, sig); } /// @inheritdoc IForwarder function execute( ForwardRequest calldata req, bytes32 domainSeparator, bytes32 requestTypeHash, bytes calldata suffixData, bytes calldata sig ) external payable override returns (bool success, bytes memory ret) { _verifySig(req, domainSeparator, requestTypeHash, suffixData, sig); _verifyAndUpdateNonce(req); require(req.validUntilTime == 0 || req.validUntilTime > block.timestamp, "FWD: request expired"); uint256 gasForTransfer = 0; if ( req.value != 0 ) { gasForTransfer = 40000; //buffer in case we need to move eth after the transaction. } bytes memory callData = abi.encodePacked(req.data, req.from); require(gasleft()*63/64 >= req.gas + gasForTransfer, "FWD: insufficient gas"); // solhint-disable-next-line avoid-low-level-calls (success,ret) = req.to.call{gas : req.gas, value : req.value}(callData); if ( req.value != 0 && address(this).balance>0 ) { // can't fail: req.from signed (off-chain) the request, so it must be an EOA... payable(req.from).transfer(address(this).balance); } return (success,ret); } function _verifyNonce(ForwardRequest calldata req) internal view { require(nonces[req.from] == req.nonce, "FWD: nonce mismatch"); } function _verifyAndUpdateNonce(ForwardRequest calldata req) internal { require(nonces[req.from]++ == req.nonce, "FWD: nonce mismatch"); } /// @inheritdoc IForwarder function registerRequestType(string calldata typeName, string calldata typeSuffix) external override { for (uint256 i = 0; i < bytes(typeName).length; i++) { bytes1 c = bytes(typeName)[i]; require(c != "(" && c != ")", "FWD: invalid typename"); } string memory requestType = string(abi.encodePacked(typeName, "(", GENERIC_PARAMS, ",", typeSuffix)); registerRequestTypeInternal(requestType); } /// @inheritdoc IForwarder function registerDomainSeparator(string calldata name, string calldata version) external override { uint256 chainId; /* solhint-disable-next-line no-inline-assembly */ assembly { chainId := chainid() } bytes memory domainValue = abi.encode( keccak256(bytes(EIP712_DOMAIN_TYPE)), keccak256(bytes(name)), keccak256(bytes(version)), chainId, address(this)); bytes32 domainHash = keccak256(domainValue); domains[domainHash] = true; emit DomainRegistered(domainHash, domainValue); } function registerRequestTypeInternal(string memory requestType) internal { bytes32 requestTypehash = keccak256(bytes(requestType)); typeHashes[requestTypehash] = true; emit RequestTypeRegistered(requestTypehash, requestType); } function _verifySig( ForwardRequest calldata req, bytes32 domainSeparator, bytes32 requestTypeHash, bytes calldata suffixData, bytes calldata sig) internal virtual view { require(domains[domainSeparator], "FWD: unregistered domain sep."); require(typeHashes[requestTypeHash], "FWD: unregistered typehash"); bytes32 digest = keccak256(abi.encodePacked( "\x19\x01", domainSeparator, keccak256(_getEncoded(req, requestTypeHash, suffixData)) )); // solhint-disable-next-line avoid-tx-origin require(tx.origin == DRY_RUN_ADDRESS || digest.recover(sig) == req.from, "FWD: signature mismatch"); } /** * @notice Creates a byte array that is a valid ABI encoding of a request of a `RequestType` type. See `execute()`. */ function _getEncoded( ForwardRequest calldata req, bytes32 requestTypeHash, bytes calldata suffixData ) public pure returns ( bytes memory ) { // we use encodePacked since we append suffixData as-is, not as dynamic param. // still, we must make sure all first params are encoded as abi.encode() // would encode them - as 256-bit-wide params. return abi.encodePacked( requestTypeHash, uint256(uint160(req.from)), uint256(uint160(req.to)), req.value, req.gas, req.nonce, keccak256(req.data), req.validUntilTime, suffixData ); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @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); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.3) (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) { 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. /// @solidity memory-safe-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 { 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)); } }
// 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; } }
// 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); }
pragma solidity >=0.7.6; pragma abicoder v2; // SPDX-License-Identifier: GPL-3.0-only import "@openzeppelin/contracts/interfaces/IERC165.sol"; /** * @title The Forwarder Interface * @notice The contracts implementing this interface take a role of authorization, authentication and replay protection * for contracts that choose to trust a `Forwarder`, instead of relying on a mechanism built into the Ethereum protocol. * * @notice if the `Forwarder` contract decides that an incoming `ForwardRequest` is valid, it must append 20 bytes that * represent the caller to the `data` field of the request and send this new data to the target address (the `to` field) * * :warning: **Warning** :warning: The Forwarder can have a full control over a `Recipient` contract. * Any vulnerability in a `Forwarder` implementation can make all of its `Recipient` contracts susceptible! * Recipient contracts should only trust forwarders that passed through security audit, * otherwise they are susceptible to identity theft. */ interface IForwarder is IERC165 { /** * @notice A representation of a request for a `Forwarder` to send `data` on behalf of a `from` to a target (`to`). */ struct ForwardRequest { address from; address to; uint256 value; uint256 gas; uint256 nonce; bytes data; uint256 validUntilTime; } event DomainRegistered(bytes32 indexed domainSeparator, bytes domainValue); event RequestTypeRegistered(bytes32 indexed typeHash, string typeStr); /** * @param from The address of a sender. * @return The nonce for this address. */ function getNonce(address from) external view returns(uint256); /** * @notice Verify the transaction is valid and can be executed. * Implementations must validate the signature and the nonce of the request are correct. * Does not revert and returns successfully if the input is valid. * Reverts if any validation has failed. For instance, if either signature or nonce are incorrect. * Reverts if `domainSeparator` or `requestTypeHash` are not registered as well. */ function verify( ForwardRequest calldata forwardRequest, bytes32 domainSeparator, bytes32 requestTypeHash, bytes calldata suffixData, bytes calldata signature ) external view; /** * @notice Executes a transaction specified by the `ForwardRequest`. * The transaction is first verified and then executed. * The success flag and returned bytes array of the `CALL` are returned as-is. * * This method would revert only in case of a verification error. * * All the target errors are reported using the returned success flag and returned bytes array. * * @param forwardRequest All requested transaction parameters. * @param domainSeparator The domain used when signing this request. * @param requestTypeHash The request type used when signing this request. * @param suffixData The ABI-encoded extension data for the current `RequestType` used when signing this request. * @param signature The client signature to be validated. * * @return success The success flag of the underlying `CALL` to the target address. * @return ret The byte array returned by the underlying `CALL` to the target address. */ function execute( ForwardRequest calldata forwardRequest, bytes32 domainSeparator, bytes32 requestTypeHash, bytes calldata suffixData, bytes calldata signature ) external payable returns (bool success, bytes memory ret); /** * @notice Register a new Request typehash. * * @notice This is necessary for the Forwarder to be able to verify the signatures conforming to the ERC-712. * * @param typeName The name of the request type. * @param typeSuffix Any extra data after the generic params. Must contain add at least one param. * The generic ForwardRequest type is always registered by the constructor. */ function registerRequestType(string calldata typeName, string calldata typeSuffix) external; /** * @notice Register a new domain separator. * * @notice This is necessary for the Forwarder to be able to verify the signatures conforming to the ERC-712. * * @notice The domain separator must have the following fields: `name`, `version`, `chainId`, `verifyingContract`. * The `chainId` is the current network's `chainId`, and the `verifyingContract` is this Forwarder's address. * This method accepts the domain name and version to create and register the domain separator value. * @param name The domain's display name. * @param version The domain/protocol version. */ function registerDomainSeparator(string calldata name, string calldata version) external; }
{ "evmVersion": "london", "libraries": {}, "metadata": { "bytecodeHash": "ipfs", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 200 }, "remappings": [], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"domainSeparator","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"domainValue","type":"bytes"}],"name":"DomainRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"typeHash","type":"bytes32"},{"indexed":false,"internalType":"string","name":"typeStr","type":"string"}],"name":"RequestTypeRegistered","type":"event"},{"inputs":[],"name":"EIP712_DOMAIN_TYPE","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"GENERIC_PARAMS","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"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":"uint256","name":"validUntilTime","type":"uint256"}],"internalType":"struct IForwarder.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes32","name":"requestTypeHash","type":"bytes32"},{"internalType":"bytes","name":"suffixData","type":"bytes"}],"name":"_getEncoded","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"domains","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"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":"uint256","name":"validUntilTime","type":"uint256"}],"internalType":"struct IForwarder.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes32","name":"domainSeparator","type":"bytes32"},{"internalType":"bytes32","name":"requestTypeHash","type":"bytes32"},{"internalType":"bytes","name":"suffixData","type":"bytes"},{"internalType":"bytes","name":"sig","type":"bytes"}],"name":"execute","outputs":[{"internalType":"bool","name":"success","type":"bool"},{"internalType":"bytes","name":"ret","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"}],"name":"getNonce","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"version","type":"string"}],"name":"registerDomainSeparator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"typeName","type":"string"},{"internalType":"string","name":"typeSuffix","type":"string"}],"name":"registerRequestType","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":"bytes32","name":"","type":"bytes32"}],"name":"typeHashes","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"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":"uint256","name":"validUntilTime","type":"uint256"}],"internalType":"struct IForwarder.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes32","name":"domainSeparator","type":"bytes32"},{"internalType":"bytes32","name":"requestTypeHash","type":"bytes32"},{"internalType":"bytes","name":"suffixData","type":"bytes"},{"internalType":"bytes","name":"sig","type":"bytes"}],"name":"verify","outputs":[],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Multichain Portfolio | 31 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.