ERC-721
NFT
Overview
Max Total Supply
4,856 YDF
Holders
1,744
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 YDFLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Firework
Compiler Version
v0.8.2+commit.661d1103
Optimization Enabled:
Yes with 500 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.2; import "../ERC721ProjectProxy.sol"; // @title: YourDaytimeFireworks //////////////////////////////////////////////////////////////////////////// // // // ββ // // ββ β // // β ββ βββ β // // βββ βββββ ββ // // ββ ββββ ββββββ βββ ββ // // ββ ββββββ β βββββββββ ββββββ ββ // // β ββββββ βββββ ββββββ βββ β // // ββ ββββ β ββββββ βββββ βββ βββ ββ // // ββββ βββββ β βββββ ββββββββββ ββββββ β ββ // // ββββ ββββ β βββββββ βββββ βββββββββββββ ββββ β // // ββββ ββββ ββββββ βββββββββββββββββββ ββββββββ βββ // // ββββββββββββββββ βββββββββββββββββββββββββββ ββββββββββ // // ββββββββββββββββββ ββββββββββββ ββββββββββββββββββββββββ // // βββββββββββββββββ βββββββββββββββββββββββββββ ββββββββββ // // βββββββββββββββββ βββββββ βββββ βββββββββββββ ββββββββββ // // ββββββ βββββββββββ ββββββββββββ ββββββββββββ βββββββββββββ // // ββββββ βββββββββββ βββββββββββββββββββββββββββββββββ ββββββ // // ββββββββββββββββββ βββββββββββββ βββββββββββββββββββ βββββ // // βββββββββββββββββ ββββββββββββββββββββββββββ βββββ βββββ // // ββββββββββββββββββββββββββββββββββββββββββββββββββ ββββββ // // βββββββββββββββββ βββββββββββββββββββββββββββββββββββββ // // βββββββββββββββββ ββββββββββββββββββββββββββββββββββββ // // ββββββ ββββββββββ ββββββββββββ βββββββββββββββββββββ // // ββββββ ββββββββββββββββββββββββββββββββββββββββββββββ // // ββββββ ββββββββ ββββββββββββββββββββββββββββββββββ // // βββββββ ββββββββ βββββββββββββββββββββββββββββββββ // // βββββββ βββββββββ ββββββββββ ββββββββββββββββββββ // // βββββββββββββββ βββββββββββββββββββββββββββββ // // βββββββββββββββ ββββββββββββββββββββββββββββ // // βββββββββββββββ ββββββββββββββββββββββββββ // // βββββββββββββββ ββββββββ βββββββββββββββββ // // ββ βββββββββββ β βββββββββββββββββββββββββ // // βββββββββββββββββββββββββββββββββββββββββ // // βββββββββββββββββββββββββββββββββββββββ // // βββββββββββββββββββββββββββββββββββββ // // βββββββββββ βββββββββββββββββββββββββ // // βββββββββββ ββββββββββββββββββββββ // // βββββββββββββββββββββββββββββββββ // // ββββββββββββββββββββββββββββββββ // // ββββββββββββββββββββββββββββββββ // // ββββββββββββββββββββββββββββββββ // // ββββββββββββββββββ ββββββββββββ // // βββββββββββββββββ βββββββββββ // // βββββββββββββββ βββββββββ // // ββββββββββββββ ββββββββββ // // βββββββ βββββ ββββββββββ // // βββββββ ββββββββββββ ββββ // // ββββββ βββββββββββββββββ // // ββββ βββββββ βββββ // // ββββββββββββββββββ // // βββββ ββββββββ ββ // // ββββββββββββββ β // // βββββββββββ // // βββββββββββ // // ββββββββ // // ββββββ // // ββββββ // // ββββ // // ββββ // // ββ // // // //////////////////////////////////////////////////////////////////////////// contract Firework is ERC721ProjectProxy { constructor(address _impl) ERC721ProjectProxy(_impl, "YourDaytimeFireworks", "YDF") {} }
// SPDX-License-Identifier: MIT pragma solidity 0.8.2; import "@openzeppelin/contracts/utils/Address.sol"; import "./core/project-base/ProjectProxy.sol"; /** * @dev ERC721Project Upgradeable Proxy */ contract ERC721ProjectProxy is ProjectProxy { constructor( address _impl, string memory name, string memory symbol ) { assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); _setImplementation(_impl); Address.functionDelegateCall(_impl, abi.encodeWithSignature("initialize(string,string)", name, symbol)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @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 * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 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"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } 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); } } } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.2; import "@openzeppelin/contracts/proxy/Proxy.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; import "@openzeppelin/contracts/utils/Address.sol"; /** * @dev Abstract Project Proxy */ abstract contract ProjectProxy is Proxy { /** * @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(); } /** * @dev Returns the current implementation address. */ function _implementation() internal view override returns (address impl) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) internal { require(Address.isContract(newImplementation), "ProjectProxy: new implementation is not a contract"); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } }
// SPDX-License-Identifier: MIT 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 internall call site, it will return directly to the external caller. */ function _delegate(address implementation) internal virtual { // solhint-disable-next-line no-inline-assembly 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 overriden 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 internall 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 overriden should call `super._beforeFallback()`. */ function _beforeFallback() internal virtual { } }
// SPDX-License-Identifier: MIT 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) { assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { assembly { r.slot := slot } } }
{ "optimizer": { "enabled": true, "runs": 500 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_impl","type":"address"}],"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"}]
Contract Creation Code
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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)
0000000000000000000000005d26ce1cb6f9ff7f07638cb3a170bc8a774b98da
-----Decoded View---------------
Arg [0] : _impl (address): 0x5D26CE1cB6F9fF7F07638cB3a170bc8a774b98DA
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000005d26ce1cb6f9ff7f07638cb3a170bc8a774b98da
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