MATIC Price: $0.687729 (-3.44%)
Gas: 30 GWei
 

Overview

MATIC Balance

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MATIC Value

$0.00

Token Holdings

Sponsored

Transaction Hash
Method
Block
From
To
Value
Execute571486782024-05-19 14:15:1119 mins ago1716128111IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0220268940.62803674
Execute571485852024-05-19 14:11:2123 mins ago1716127881IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0234843844.38520062
Execute571485842024-05-19 14:11:1923 mins ago1716127879IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231553143.75358403
Execute571485742024-05-19 14:10:5523 mins ago1716127855IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0234839844.37865172
Execute571485732024-05-19 14:10:5123 mins ago1716127851IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0226089942.72515644
Execute571485732024-05-19 14:10:5123 mins ago1716127851IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0226925942.88354351
Execute571485732024-05-19 14:10:5123 mins ago1716127851IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231916243.82857925
Execute571485732024-05-19 14:10:5123 mins ago1716127851IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231957743.83698563
Execute571485732024-05-19 14:10:5123 mins ago1716127851IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231960843.83700425
Execute571485722024-05-19 14:10:4723 mins ago1716127847IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231491643.75361956
Execute571485722024-05-19 14:10:4723 mins ago1716127847IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231536643.76013294
Execute571485672024-05-19 14:10:2724 mins ago1716127827IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0228587243.19454941
Execute571485662024-05-19 14:10:2324 mins ago1716127823IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0226952642.89303425
Execute571485652024-05-19 14:10:1924 mins ago1716127819IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.02260842.72328035
Execute571485652024-05-19 14:10:1924 mins ago1716127819IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0226045442.72328035
Execute571485652024-05-19 14:10:1924 mins ago1716127819IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0226047142.72328035
Execute571485642024-05-19 14:10:1524 mins ago1716127815IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0225879442.68923477
Execute571485642024-05-19 14:10:1524 mins ago1716127815IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0226077942.72328035
Execute571484462024-05-19 14:05:4628 mins ago1716127546IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0127115346.96288916
Execute571478272024-05-19 13:42:0852 mins ago1716126128IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0309862657.36391897
Execute571476802024-05-19 13:35:5258 mins ago1716125752IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0237777144.77078597
Execute571476392024-05-19 13:34:241 hr ago1716125664IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0241711645.58498011
Execute571473342024-05-19 13:23:031 hr ago1716124983IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0227023942.97530291
Execute571473282024-05-19 13:22:511 hr ago1716124971IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0231322842.79271619
Execute571471622024-05-19 13:16:251 hr ago1716124585IN
Unstoppable Domains: Minting Manager Forwarder
0 MATIC0.0108101439.81417715
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Contract Source Code Verified (Exact Match)

Contract Name:
MintingManagerForwarder

Compiler Version
v0.8.0+commit.c7dfd78e

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 4 : MintingManagerForwarder.sol
// @author Unstoppable Domains, Inc.
// @date August 23th, 2021

pragma solidity ^0.8.0;

import './IForwarder.sol';
import './BaseForwarder.sol';

contract MintingManagerForwarder is BaseForwarder {
    address private _mintingManager;
    mapping(uint256 => uint256) private _nonces;

    constructor(address mintingManager) {
        _mintingManager = mintingManager;
    }

    function nonceOf(uint256 tokenId) external view override returns (uint256) {
        return _nonces[tokenId];
    }

    function verify(ForwardRequest calldata req, bytes calldata signature) public view override returns (bool) {
        return _verify(req, _mintingManager, signature);
    }

    function execute(ForwardRequest calldata req, bytes calldata signature) external override returns (bytes memory) {
        uint256 gas = gasleft();
        require(verify(req, signature), 'MintingManagerForwarder: SIGNATURE_INVALID');
        return _execute(req.from, _mintingManager, req.tokenId, gas, req.data, signature);
    }

    function _invalidateNonce(uint256 tokenId) internal override {
        _nonces[tokenId] = _nonces[tokenId] + 1;
    }
}

File 2 of 4 : IForwarder.sol
// @author Unstoppable Domains, Inc.
// @date August 11th, 2021

pragma solidity ^0.8.0;

interface IForwarder {
    struct ForwardRequest {
        address from;
        uint256 nonce;
        uint256 tokenId;
        bytes data;
    }

    function nonceOf(uint256 tokenId) external view returns (uint256);

    function verify(ForwardRequest calldata req, bytes calldata signature) external view returns (bool);

    function execute(ForwardRequest calldata req, bytes calldata signature) external returns (bytes memory);
}

File 2 of 4 : BaseForwarder.sol
// @author Unstoppable Domains, Inc.
// @date August 12th, 2021

pragma solidity ^0.8.0;

import '@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol';

import './IForwarder.sol';

abstract contract BaseForwarder is IForwarder {
    using ECDSAUpgradeable for bytes32;

    function _verify(
        ForwardRequest memory req,
        address target,
        bytes memory signature
    ) internal view virtual returns (bool) {
        uint256 nonce = this.nonceOf(req.tokenId);
        address signer = _recover(keccak256(req.data), target, nonce, signature);
        return nonce == req.nonce && signer == req.from;
    }

    function _recover(
        bytes32 digest,
        address target,
        uint256 nonce,
        bytes memory signature
    ) internal pure virtual returns (address signer) {
        return keccak256(abi.encodePacked(digest, target, nonce)).toEthSignedMessageHash().recover(signature);
    }

    function _execute(
        address from,
        address to,
        uint256 tokenId,
        uint256 gas,
        bytes memory data,
        bytes memory signature
    ) internal virtual returns (bytes memory) {
        _invalidateNonce(tokenId);

        (bool success, bytes memory returndata) = to.call{gas: gas}(_buildData(from, tokenId, data, signature));
        // Validate that the relayer has sent enough gas for the call.
        // See https://ronan.eth.link/blog/ethereum-gas-dangers/
        assert(gasleft() > gas / 63);

        return _verifyCallResult(success, returndata, 'BaseForwarder: CALL_FAILED');
    }

    function _invalidateNonce(
        uint256 /* tokenId */
    ) internal virtual {}

    function _buildData(
        address from,
        uint256 tokenId,
        bytes memory data,
        bytes memory /* signature */
    ) internal view virtual returns (bytes memory) {
        return abi.encodePacked(data, from, tokenId);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                //solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 2 of 4 : ECDSAUpgradeable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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 ECDSAUpgradeable {
    /**
     * @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) {
        // Divide the signature in r, s and v variables
        bytes32 r;
        bytes32 s;
        uint8 v;

        // 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) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
        } else if (signature.length == 64) {
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            // solhint-disable-next-line no-inline-assembly
            assembly {
                let vs := mload(add(signature, 0x40))
                r := mload(add(signature, 0x20))
                s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
                v := add(shr(255, vs), 27)
            }
        } else {
            revert("ECDSA: invalid signature length");
        }

        return recover(hash, v, r, s);
    }

    /**
     * @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) {
        // 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 (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): 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.
        require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
        require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        require(signer != address(0), "ECDSA: invalid signature");

        return signer;
    }

    /**
     * @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 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));
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "bytecodeHash": "none"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"mintingManager","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwarder.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"execute","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"nonceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"internalType":"struct IForwarder.ForwardRequest","name":"req","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"verify","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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Deployed Bytecode

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

0000000000000000000000007be83293beedc9eba1bd76c66a65f10f3efaec26

-----Decoded View---------------
Arg [0] : mintingManager (address): 0x7be83293BeeDc9Eba1bd76c66A65F10F3efaeC26

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000007be83293beedc9eba1bd76c66a65f10f3efaec26


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