ETH Price: $1,987.12 (+0.96%)
Gas: 0.41 Gwei
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

More Info

Private Name Tags

TokenTracker

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Approve Admin220111982025-03-09 18:48:3512 days ago1741546115IN
0x1703Ff49...A33429534
0 ETH0.000258222.64977068
Set Token URI192216212024-02-13 21:01:35402 days ago1707858095IN
0x1703Ff49...A33429534
0 ETH0.0019475543.03505653
Set Token URI192216062024-02-13 20:58:35402 days ago1707857915IN
0x1703Ff49...A33429534
0 ETH0.001794939.66199237
Mint Base192209242024-02-13 18:41:35402 days ago1707849695IN
0x1703Ff49...A33429534
0 ETH0.0062870935.52530123
Set Token URI190932382024-01-26 20:44:47420 days ago1706301887IN
0x1703Ff49...A33429534
0 ETH0.0007735717.09366536
Register Extensi...186809662023-11-30 0:52:47478 days ago1701305567IN
0x1703Ff49...A33429534
0 ETH0.0035885633.22745903
Mint Base186017032023-11-18 22:30:23489 days ago1700346623IN
0x1703Ff49...A33429534
0 ETH0.0028313115.99838289
Mint Base185946392023-11-17 22:41:11490 days ago1700260871IN
0x1703Ff49...A33429534
0 ETH0.0046863526.48033251
Mint Base185663462023-11-13 23:45:35494 days ago1699919135IN
0x1703Ff49...A33429534
0 ETH0.0050302131.46340517
Set Approval For...185057412023-11-05 12:14:59503 days ago1699186499IN
0x1703Ff49...A33429534
0 ETH0.0011713222.9056593
Mint Base184936822023-11-03 19:41:23504 days ago1699040483IN
0x1703Ff49...A33429534
0 ETH0.0038821421.93612021
Mint Base184196332023-10-24 10:50:23515 days ago1698144623IN
0x1703Ff49...A33429534
0 ETH0.0037674521.28807127
Set Approval For...181237862023-09-13 0:22:11556 days ago1694564531IN
0x1703Ff49...A33429534
0 ETH0.000420438.22182566
Mint Base178347722023-08-03 13:29:23597 days ago1691069363IN
0x1703Ff49...A33429534
0 ETH0.0052802129.8359323
Mint Base177211032023-07-18 15:48:47613 days ago1689695327IN
0x1703Ff49...A33429534
0 ETH0.0070600139.89274279
Mint Base175723592023-06-27 18:06:47633 days ago1687889207IN
0x1703Ff49...A33429534
0 ETH0.0034272819.36593409
Mint Base173153152023-05-22 14:06:23670 days ago1684764383IN
0x1703Ff49...A33429534
0 ETH0.0084159147.55428529
Safe Transfer Fr...172667292023-05-15 17:42:23676 days ago1684172543IN
0x1703Ff49...A33429534
0 ETH0.0174740359.32228114
Mint Base172625842023-05-15 3:40:23677 days ago1684122023IN
0x1703Ff49...A33429534
0 ETH0.007190840.63175913
Mint Base161422582022-12-08 20:04:11834 days ago1670529851IN
0x1703Ff49...A33429534
0 ETH0.0034006121.27043873
Set Token URI161422302022-12-08 19:58:35834 days ago1670529515IN
0x1703Ff49...A33429534
0 ETH0.0007213515.93983531
Mint Base161422242022-12-08 19:57:23834 days ago1670529443IN
0x1703Ff49...A33429534
0 ETH0.0029846916.86508849
Mint Base161118242022-12-04 13:44:59839 days ago1670161499IN
0x1703Ff49...A33429534
0 ETH0.0023393513.21855092
Mint Base161069092022-12-03 21:16:11839 days ago1670102171IN
0x1703Ff49...A33429534
0 ETH0.0029720616.79371971
Set Approval For...160788072022-11-29 23:04:35843 days ago1669763075IN
0x1703Ff49...A33429534
0 ETH0.000635712.43145788
View all transactions

View more zero value Internal Transactions in Advanced View mode

Advanced mode:
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
GWD

Compiler Version
v0.8.7+commit.e28d00a7

Optimization Enabled:
Yes with 300 runs

Other Settings:
default evmVersion
File 1 of 5 : GWD.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @title: GWID
/// @author: manifold.xyz

import "./ERC721Creator.sol";

////////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                            //
//                                                                                            //
//                                                                                            //
//                                                                                            //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓╢╢╢▓▓▓▓▓▓▓████████████████████▓▓▓▓▓▓▓╢╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓╢╢╢▓▓▓▓▓▓▓████████████████████▓▓▓▓▓▓▓╢╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓╢╢╢╢╢╢▓██████▌╢╢╢╢╢╢╢╢╢╢╢╢╢╢╢╢███▌╢╢╢╢╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓╢╢╢╢╢╢╣▒▒▒▒▒▒▓████████████████▒▒▒▒╢╢╢╢╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓╢╢╢╢╢╢╣▓▓▓▓▓▓█████████████████▓▓▓▒╢╢╢╢╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓╢╢╢╢╢╢▓██████████████████████████▌╢╢╢╢╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███╢╢╢▓███░░░░░░░░░░██████████░░░░░░║╢╢▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███╢╢╢▓███░░░░░░░░░░▀▀▀▀▀▀▀▀▀▀░░░░░░║▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███╢╢╢▓███░░░░░░░░░░░░░░░░░░░░░░░░░░▐███▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓██████████░░░░░░░░░░░░░░░░░░░░░░░░░░▐███▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███████▀▀▀░░░▄▄▄▄▄▄▄░░░░░░░░░░▄▄▄▄▄▄████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓██████▌░░░░░░███████░░░░░░░░░░██████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███░░░░░░░░░░███▌░░▒░░░░░░░░░░███░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███░░░░░░░░░░███▌▒▒▒░░░░░░░░░░███▒▒▒████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███████░░░░░░░░░░░░░░░░░░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███████░░░░░░░░░░░░░░░░░░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███████░░░░░░░░░░░░░███████░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███████░░░░░░░░░░░░░░░░░░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███████░░░░░░░░░░░░░░░░░░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓█████████████████████████████████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓█████████████░░░▐██████████░░░███████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓█████████████░░░░██████████░░░███████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓█████████████░░░░░░░███▌░░░░░░███████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███▌░░▀███████████████████████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███▌░░░███████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███▌░░░░░░░░░█████████████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███▌░░░░░░░░░█████████████████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███▌░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//        ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓███▌░░░░░░░░░████▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓    //
//                                                                                            //
//    Widmer                                                                                  //
//                                                                                            //
//                                                                                            //
//                                                                                            //
//                                                                                            //
//                                                                                            //
//                                                                                            //
//                                                                                            //
////////////////////////////////////////////////////////////////////////////////////////////////


contract GWD is ERC721Creator {
    constructor() ERC721Creator("GWID", "GWD") {}
}

File 2 of 5 : ERC721Creator.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/// @author: manifold.xyz

import "@openzeppelin/contracts/proxy/Proxy.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/StorageSlot.sol";

contract ERC721Creator is Proxy {
    
    constructor(string memory name, string memory symbol) {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
        StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = 0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a;
        Address.functionDelegateCall(
            0xe4E4003afE3765Aca8149a82fc064C0b125B9e5a,
            abi.encodeWithSignature("initialize(string,string)", name, symbol)
        );
    }
        
    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
     function implementation() public view returns (address) {
        return _implementation();
    }

    function _implementation() internal override view returns (address) {
        return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }    

}

File 3 of 5 : Proxy.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/Proxy.sol)

pragma solidity ^0.8.0;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 *
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 *
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal virtual {
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @dev This is a virtual function that should be overridden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal view virtual returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     *
     * This function does not return to its internal call site, it will return directly to the external caller.
     */
    function _fallback() internal virtual {
        _beforeFallback();
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback() external payable virtual {
        _fallback();
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive() external payable virtual {
        _fallback();
    }

    /**
     * @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
     * call, or as part of the Solidity `fallback` or `receive` functions.
     *
     * If overridden should call `super._beforeFallback()`.
     */
    function _beforeFallback() internal virtual {}
}

File 4 of 5 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

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

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

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

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

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 5 of 5 : StorageSlot.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

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

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

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

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

Settings
{
  "remappings": [
    "@openzeppelin/=node_modules/@openzeppelin/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 300
  },
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

API
[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

Deployed Bytecode

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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading...
Loading
[ Download: CSV Export  ]

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.