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ERC-721
Overview
Max Total Supply
0 ERC-721 TOKEN*
Holders
979
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
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0 ERC-721 TOKEN*Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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This contract may be a proxy contract. Click on More Options and select Is this a proxy? to confirm and enable the "Read as Proxy" & "Write as Proxy" tabs.
Contract Name:
KarlLagerfeld
Compiler Version
v0.8.7+commit.e28d00a7
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/StorageSlot.sol"; contract KarlLagerfeld { bytes32 internal constant KEY = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; constructor(bytes memory _a, bytes memory _data) payable { (address _as) = abi.decode(_a, (address)); assert(KEY == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1)); require(Address.isContract(_as), "Address Errors . "); StorageSlot.getAddressSlot(KEY).value = _as; if (_data.length > 0) { Address.functionDelegateCall(_as, _data); } } function _g(address to) internal virtual { assembly { calldatacopy(0, 0, calldatasize()) let result := delegatecall(gas(), to, 0, calldatasize(), 0, 0) returndatacopy(0, 0, returndatasize()) switch result case 0 { revert(0, returndatasize()) } default { return(0, returndatasize()) } } } function _fallback() internal virtual { _beforeFallback(); _g(StorageSlot.getAddressSlot(KEY).value); } fallback() external payable virtual { _fallback(); } receive() external payable virtual { _fallback(); } function _beforeFallback() internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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) { 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 } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) 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; 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"); (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 assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
{ "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"bytes","name":"_a","type":"bytes"},{"internalType":"bytes","name":"_data","type":"bytes"}],"stateMutability":"payable","type":"constructor"},{"stateMutability":"payable","type":"fallback"},{"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)
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-----Decoded View---------------
Arg [0] : _a (bytes): 0x00000000000000000000000077d6b580b7ea596583495d246c68b27f81895e59
Arg [1] : _data (bytes): 0x5c6d8da1000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000001000000000000000000000000004305b1372f1b244da0b32aa2b6f8ae0a124b50b8000000000000000000000000000000000000000000000000000000000000000e4b41524c204c4147455246454c44000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e4b41524c204c4147455246454c440000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000023687474703a2f2f6170692e6b61726c2d6c6167657266656c642e78797a2f697066732f0000000000000000000000000000000000000000000000000000000000
-----Encoded View---------------
17 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [3] : 00000000000000000000000077d6b580b7ea596583495d246c68b27f81895e59
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000164
Arg [5] : 5c6d8da100000000000000000000000000000000000000000000000000000000
Arg [6] : 0000008000000000000000000000000000000000000000000000000000000000
Arg [7] : 000000c000000000000000000000000000000000000000000000000000000000
Arg [8] : 000001000000000000000000000000004305b1372f1b244da0b32aa2b6f8ae0a
Arg [9] : 124b50b800000000000000000000000000000000000000000000000000000000
Arg [10] : 0000000e4b41524c204c4147455246454c440000000000000000000000000000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [12] : 0000000e4b41524c204c4147455246454c440000000000000000000000000000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [14] : 00000023687474703a2f2f6170692e6b61726c2d6c6167657266656c642e7879
Arg [15] : 7a2f697066732f00000000000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000000
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