Token Coinbase Wrapped Staked ETH

/**
 *Submitted for verification at basescan.org on 2023-07-22
*/

// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

/// @title Proxy
/// @notice Proxy is a transparent proxy that passes through the call if the caller is the owner or
///         if the caller is address(0), meaning that the call originated from an off-chain
///         simulation.
contract Proxy {
    /// @notice The storage slot that holds the address of the implementation.
    ///         bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)
    bytes32 internal constant IMPLEMENTATION_KEY =
        0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /// @notice The storage slot that holds the address of the owner.
    ///         bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)
    bytes32 internal constant OWNER_KEY =
        0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /// @notice An event that is emitted each time the implementation is changed. This event is part
    ///         of the EIP-1967 specification.
    /// @param implementation The address of the implementation contract
    event Upgraded(address indexed implementation);

    /// @notice An event that is emitted each time the owner is upgraded. This event is part of the
    ///         EIP-1967 specification.
    /// @param previousAdmin The previous owner of the contract
    /// @param newAdmin      The new owner of the contract
    event AdminChanged(address previousAdmin, address newAdmin);

    /// @notice A modifier that reverts if not called by the owner or by address(0) to allow
    ///         eth_call to interact with this proxy without needing to use low-level storage
    ///         inspection. We assume that nobody is able to trigger calls from address(0) during
    ///         normal EVM execution.
    modifier proxyCallIfNotAdmin() {
        if (msg.sender == _getAdmin() || msg.sender == address(0)) {
            _;
        } else {
            // This WILL halt the call frame on completion.
            _doProxyCall();
        }
    }

    /// @notice Sets the initial admin during contract deployment. Admin address is stored at the
    ///         EIP-1967 admin storage slot so that accidental storage collision with the
    ///         implementation is not possible.
    /// @param _admin Address of the initial contract admin. Admin as the ability to access the
    ///               transparent proxy interface.
    constructor(address _admin) {
        _changeAdmin(_admin);
    }

    // slither-disable-next-line locked-ether
    receive() external payable {
        // Proxy call by default.
        _doProxyCall();
    }

    // slither-disable-next-line locked-ether
    fallback() external payable {
        // Proxy call by default.
        _doProxyCall();
    }

    /// @notice Set the implementation contract address. The code at the given address will execute
    ///         when this contract is called.
    /// @param _implementation Address of the implementation contract.
    function upgradeTo(address _implementation) public virtual proxyCallIfNotAdmin {
        _setImplementation(_implementation);
    }

    /// @notice Set the implementation and call a function in a single transaction. Useful to ensure
    ///         atomic execution of initialization-based upgrades.
    /// @param _implementation Address of the implementation contract.
    /// @param _data           Calldata to delegatecall the new implementation with.
    function upgradeToAndCall(address _implementation, bytes calldata _data)
        public
        payable
        virtual
        proxyCallIfNotAdmin
        returns (bytes memory)
    {
        _setImplementation(_implementation);
        (bool success, bytes memory returndata) = _implementation.delegatecall(_data);
        require(success, "Proxy: delegatecall to new implementation contract failed");
        return returndata;
    }

    /// @notice Changes the owner of the proxy contract. Only callable by the owner.
    /// @param _admin New owner of the proxy contract.
    function changeAdmin(address _admin) public virtual proxyCallIfNotAdmin {
        _changeAdmin(_admin);
    }

    /// @notice Gets the owner of the proxy contract.
    /// @return Owner address.
    function admin() public virtual proxyCallIfNotAdmin returns (address) {
        return _getAdmin();
    }

    //// @notice Queries the implementation address.
    /// @return Implementation address.
    function implementation() public virtual proxyCallIfNotAdmin returns (address) {
        return _getImplementation();
    }

    /// @notice Sets the implementation address.
    /// @param _implementation New implementation address.
    function _setImplementation(address _implementation) internal {
        assembly {
            sstore(IMPLEMENTATION_KEY, _implementation)
        }
        emit Upgraded(_implementation);
    }

    /// @notice Changes the owner of the proxy contract.
    /// @param _admin New owner of the proxy contract.
    function _changeAdmin(address _admin) internal {
        address previous = _getAdmin();
        assembly {
            sstore(OWNER_KEY, _admin)
        }
        emit AdminChanged(previous, _admin);
    }

    /// @notice Performs the proxy call via a delegatecall.
    function _doProxyCall() internal {
        address impl = _getImplementation();
        require(impl != address(0), "Proxy: implementation not initialized");

        assembly {
            // Copy calldata into memory at 0x0....calldatasize.
            calldatacopy(0x0, 0x0, calldatasize())

            // Perform the delegatecall, make sure to pass all available gas.
            let success := delegatecall(gas(), impl, 0x0, calldatasize(), 0x0, 0x0)

            // Copy returndata into memory at 0x0....returndatasize. Note that this *will*
            // overwrite the calldata that we just copied into memory but that doesn't really
            // matter because we'll be returning in a second anyway.
            returndatacopy(0x0, 0x0, returndatasize())

            // Success == 0 means a revert. We'll revert too and pass the data up.
            if iszero(success) {
                revert(0x0, returndatasize())
            }

            // Otherwise we'll just return and pass the data up.
            return(0x0, returndatasize())
        }
    }

    /// @notice Queries the implementation address.
    /// @return Implementation address.
    function _getImplementation() internal view returns (address) {
        address impl;
        assembly {
            impl := sload(IMPLEMENTATION_KEY)
        }
        return impl;
    }

    /// @notice Queries the owner of the proxy contract.
    /// @return Owner address.
    function _getAdmin() internal view returns (address) {
        address owner;
        assembly {
            owner := sload(OWNER_KEY)
        }
        return owner;
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"name":"changeAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_implementation","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

297:6748:0:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2652:14;:12;:14::i;:::-;297:6748;;2803:14;:12;:14::i;3053:133::-;;;;;;;;;;-1:-1:-1;3053:133:0;;;;;:::i;:::-;;:::i;3522:447::-;;;;;;:::i;:::-;;:::i;:::-;;;;;;;:::i;:::-;;;;;;;;4535:125;;;;;;;;;;;;;:::i;:::-;;;1911:42:1;1899:55;;;1881:74;;1869:2;1854:18;4535:125:0;1735:226:1;4119:111:0;;;;;;;;;;-1:-1:-1;4119:111:0;;;;;:::i;:::-;;:::i;4325:107::-;;;;;;;;;;;;;:::i;5380:1091::-;5424:12;5439:20;6707:18;6701:25;;6573:193;5439:20;5424:35;-1:-1:-1;5478:18:0;;;5470:68;;;;;;;2168:2:1;5470:68:0;;;2150:21:1;2207:2;2187:18;;;2180:30;2246:34;2226:18;;;2219:62;2317:7;2297:18;;;2290:35;2342:19;;5470:68:0;;;;;;;;;5664:14;5659:3;5654;5641:38;5841:3;5836;5820:14;5815:3;5809:4;5802:5;5789:56;6143:16;6138:3;6133;6118:42;6270:7;6260:82;;6310:16;6305:3;6298:29;6260:82;;6436:16;6431:3;6424:29;3053:133;6991:9;6985:16;1863:25;;:10;:25;;;:53;;;-1:-1:-1;1892:10:0;:24;1863:53;1859:195;;;3143:35:::1;3162:15;3143:18;:35::i;:::-;3053:133:::0;:::o;1859:195::-;2028:14;:12;:14::i;3522:447::-;3692:12;1877:11;6991:9;6985:16;;6864:178;1877:11;1863:25;;:10;:25;;;:53;;;-1:-1:-1;1892:10:0;:24;1863:53;1859:195;;;3722:35:::1;3741:15;3722:18;:35::i;:::-;3769:12;3783:23:::0;3810:15:::1;:28;;3839:5;;3810:35;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3768:77;;;;3864:7;3856:77;;;::::0;::::1;::::0;;2850:2:1;3856:77:0::1;::::0;::::1;2832:21:1::0;2889:2;2869:18;;;2862:30;2928:34;2908:18;;;2901:62;2999:27;2979:18;;;2972:55;3044:19;;3856:77:0::1;2648:421:1::0;3856:77:0::1;3951:10:::0;-1:-1:-1;1859:195:0;;-1:-1:-1;1859:195:0;;2028:14;:12;:14::i;:::-;3522:447;;;;;:::o;4535:125::-;4605:7;1877:11;6991:9;6985:16;;6864:178;1877:11;1863:25;;:10;:25;;;:53;;;-1:-1:-1;1892:10:0;:24;1863:53;1859:195;;;-1:-1:-1;6707:18:0;6701:25;;4535:125::o;1859:195::-;2028:14;:12;:14::i;:::-;4535:125;:::o;4119:111::-;6991:9;6985:16;1863:25;;:10;:25;;;:53;;;-1:-1:-1;1892:10:0;:24;1863:53;1859:195;;;4202:20:::1;4215:6;4202:12;:20::i;4325:107::-:0;4386:7;1877:11;6991:9;6985:16;;6864:178;1877:11;1863:25;;:10;:25;;;:53;;;-1:-1:-1;1892:10:0;:24;1863:53;1859:195;;;-1:-1:-1;6991:9:0;6985:16;;4535:125::o;4778:199::-;4882:18;4875:43;;;4944:25;;;;;;;;;;;4778:199;:::o;5099:212::-;5157:16;5176:11;6991:9;6985:16;;6864:178;5176:11;5229:9;5222:25;;;5273:30;;;3258:42:1;3327:15;;;3309:34;;3379:15;;3374:2;3359:18;;3352:43;5157:30:0;;-1:-1:-1;5273:30:0;;3221:18:1;5273:30:0;;;;;;;5146:165;5099:212;:::o;14:196:1:-;82:20;;142:42;131:54;;121:65;;111:93;;200:1;197;190:12;111:93;14:196;;;:::o;215:186::-;274:6;327:2;315:9;306:7;302:23;298:32;295:52;;;343:1;340;333:12;295:52;366:29;385:9;366:29;:::i;406:665::-;485:6;493;501;554:2;542:9;533:7;529:23;525:32;522:52;;;570:1;567;560:12;522:52;593:29;612:9;593:29;:::i;:::-;583:39;;673:2;662:9;658:18;645:32;696:18;737:2;729:6;726:14;723:34;;;753:1;750;743:12;723:34;791:6;780:9;776:22;766:32;;836:7;829:4;825:2;821:13;817:27;807:55;;858:1;855;848:12;807:55;898:2;885:16;924:2;916:6;913:14;910:34;;;940:1;937;930:12;910:34;985:7;980:2;971:6;967:2;963:15;959:24;956:37;953:57;;;1006:1;1003;996:12;953:57;1037:2;1033;1029:11;1019:21;;1059:6;1049:16;;;;;406:665;;;;;:::o;1076:654::-;1186:4;1215:2;1244;1233:9;1226:21;1276:6;1270:13;1319:6;1314:2;1303:9;1299:18;1292:34;1344:1;1354:140;1368:6;1365:1;1362:13;1354:140;;;1463:14;;;1459:23;;1453:30;1429:17;;;1448:2;1425:26;1418:66;1383:10;;1354:140;;;1512:6;1509:1;1506:13;1503:91;;;1582:1;1577:2;1568:6;1557:9;1553:22;1549:31;1542:42;1503:91;-1:-1:-1;1646:2:1;1634:15;1651:66;1630:88;1615:104;;;;1721:2;1611:113;;1076:654;-1:-1:-1;;;1076:654:1:o;2372:271::-;2555:6;2547;2542:3;2529:33;2511:3;2581:16;;2606:13;;;2581:16;2372:271;-1:-1:-1;2372:271:1:o

ipfs://7a7ec8e9efb10b26c64aa15ad007a832593d7a72c75b969fd318445cde7c21c6