Overview
TokenID
2
Total Transfers
-
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|
Contract Name:
ACKSTRACT
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 300 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /// @title: ACKSTRACT /// @author: manifold.xyz import "./manifold/ERC721Creator.sol"; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// // // // // // :::::::;;:;;::::::::::c:::ccclc:::cc:;;;;::clc'.':cccllllollllloolcc:;;;:c:cc:,;:;;:ccc::cllccc:cloollllc:cc:';cccclllccc::cllllcccc:::cllllcclc:cllllllcccccc::cllc:::ccccccccc:::c // // ::::;;:::::::::::::::::::::::lcccc:::;;;;;::cc:;:ccccllllllll:cllcclcc:::::cc:::::;::cc::clcclllllcllccc::cc:::c:cclccccllllolcllllcclc::cc::ccccccccllcccccccccclc:cc::cccccccccccc // // ;::;;:ccc::::ccccc:::c:::ccccclc::,;cc::::::::ccclolccclllc::cc:::ccccc:;;;:;;;::::;:cc::::clllllllllccc::c;;ccclcccccllllolllollllc:,;:ccc:c:;:cccccccccclccccc::;;:::;:::::ccccccc // // ;::::ccccc:c::cc:c:cccc::::cccc::c::ccc::::::cc:::clllclc:;;;:::,;clcccc:::c;:cccc:cccc:::;::;:lollloll:;::;;:::lccllcllcccllllllllc::loollllcccccclllcccccccc::::;,,;;;:::::::ccccc // // ,;:cccc::c::;;::;ccccccccc:::::;:cc:ccc::::;;cc::cllcclc,..,::::;:llcclolccc:cccc::cllccc:::::clllollll:;;;,,;;;::clccccc:coolllllolcollooooloolccclllccccc:ccc::;;;;::::;;:::::::cc // // ;;::::::;;::::::::::cccccc:::;;:cc::ccc::cc::clolloolccc,.';:::;;clcccoolcclcclllc:lollc:::::cc:ccccccc:;;;,,,;;;;:cccccccllllllllcclllloooooolllcloollllllccl:;;;;;,;;:cccc:::::;;: // // ;,',,;;;,,;;:clcc::c:::::::::;::::;;ccccccccllllllllccc:cccccc::cccccc:clcclllllolcllllcc:,;::c:;::cc::::;,,'',;;;;;:::::ccccllllcccllllloooccloolllooollolc::;,,,;;:cc::::::;;;::;: // // ,,,;::::::;,;:cccccc:::::;;;;;::::;:clllcccccllcclollcc:cclllcc:cccccc:::cccloololclllc:;:::cc::;;::;;;::,,'''''::;:::::ccccllolcc::lccllllccllolllllooooooolcll:;;;;ccc::;;;;;::::: // // ,,,,;:::::::;,;:ccc:::::ccc;;:::cc::ccccccccclcccccclllccccccccllcccccccc:cc:::cccccccc:::ccc:;;,;:;,,;;;;;;;;;;;:;;;;;:::cclllccc:;:ccclc::clllllllccodooddooddol:::lollcllccccccc: // // ;,,,,;:c:::::,,;::cccc::::::;;;cccccc::ccccllllllccccllc:;::ccccccccccclcc:::;:ccccccllc:c:::;,,,,;,,,;;:;;:::;;,,,,;;;;;;;:cccccc::cccllccclllllllccloooodoooooolllllcloolllllcccll // // ;;c:;::;:c:;;:;,;cllcccc:;::;;:c:;;::::loolloolllc:::::::;,;:ccccclccccccc:;;:ccc:::cc:::;;;:,','',,',,;::;;;,,,,;;,,,;;:;;;:ll::cc::cllllooolllllc:clllllooooooooodooooollllllllccc // // cc::cc:::::;:::::ccllc:::::;;ccc:::clccclllll::cccc::::::;:::::cccclc:::::;,;;;;::cc:;;;;;;;;;;:;,,'''',;;,',,,,,;;,,;;;,,,,;:ccloc::ccllllllllllllccllllllllllolcooooooolcloollllcc // // :::cc::cc:c:cc::clcc:cc:::;;;cc:codl;,clllcccc:cccc:::::::cccccccclllc;,;;;,''',;;;;;;,,,;;;;'':c:;,.',''.',,,,,,,;;:;,'''..,clllllcc::clcllccclllclllccllllllloolcllooolccccllllccc // // cccc:;:c:::;;::::cccc::cc:::::cloool;,:llcclccccccllcclllclllolccccclc;,,;;,'',;;;;;;,,,,;;;,'',;::;,''..'',',,,,;,,,,..'''..,:cclc:;;;::::cccclllllccccclcllccloolllllloolcclollcc: // // cc:;;::;:cccc::::cccccllccclllllllcc::ccllllllccllllllooollclllcllc::;,,;;,,,,,;;;;;;;;,',;;;;;:;,,'..'..,,''',,,,'.''''....'''',:::::::;;;;::ccccllllc::ccc::ccccccccccllolloolllc: // // ::;;:::clccllcc::ccllol::clllllclllllddlloollc:clloolllllllcclllllc;;;'',,,,,,,,,,;::;;,',,;:c:;;,,...,,,,'.''''.''..........',,,::;;::::;,,;;;:::ccclc:;:cc:::::::c:::ccclllllllll: // // ;;;:;;:clccc::c:;:cllll::cllccllol:loolcclllllccllllclllloolcccc::;,,,,,,;;;;;,,,',;;;;,,,,,,,,;;;;;;,,'..'..''...............,;::cc:;;,;;,,,,;::::::ccc::ccc::cccclllclllllllooool: // // ccc:;;:clcllc::::ccccloolooddooc,clodc:llllclolcclllcccclllllcc:,,::::;,;;;,,,,,''',,,;;,,,'''',,,,;;''...''....... ........';:c::::;;,,,,,,,,,;;:::::ccc:::ccclllloooloooooolooooll // // :::::,,;cllc::::cllllllcllooolol::cllcclolllllllccllll:clllcclc:c:;;;:;;;;;;;,,;,'',,'''....'..'''','''..,'.............,;''',;:;,,::;,,,'',;,,;;;::cc:::clcccllcclooooooolloooollcc // // ::;::;;:::;,:::cccclolccc:ccc:cllccccllllllolclllcclllc:ccccccc::;,;,;;,,;;;:;;;,,...'''.''''''.',;;,,,,,;,.....'.';,',,;:c:;;::;;;::;',,'',;;;;;;:::ccc::cccccllc:cclllooddoccllcll // // ccllllccccc;:::clccllcccccccccccccccllccllcclllcclcclcc:::;;;;;:;,''......'';;;;,'...',,;;;;;;;,,'',,,;:::,,,,,,'',;,,:::c:,'',;;::;,,;,;;;::;,,,;::c::clllccclclllcccclloddollllclo // // :;coolllclolccccc:clllcc::ccc::cccc:ccc:ccccccc::cccc:,;c:;,,,;;;;;,,''....',;,'',,',;;;;:::;:c:;;;;;,;;;;,,::cc::c:;;;,,,'.'''',,;:::;,;::cc:,,;;:::cclollc:clccllllooccllllloolccl // // c:clllllclolllcc::cllcc::c:::cc:::cccc:::ccc::::cllc::::::;:;;c:::;;;;'..''',;,';::::cc:::;::c::;;::;;;,;;;:cccclc:clccclcc;;,',;;;:::,,,:cc:;,;;;:cccclllccccllccllloolccclllloolll // // cccllolclc:lolcclllll:,,,;:::cccc::cc:::ccc:::cclll::cccllcccccc:::::;;,'''''',;::::;;:::::c:;:;;::,,;;;;;;:::ccc::c:::ccllcccc:::::cccc::::;;;;;:ccccccc:ccccllllllllolccclollooclo // // llcclc:ccc:cc::cloc;,,,,,,;;:::::;;;;;:cc:::::ccc:::clc::cccccc::::;::;,,''.',;;,,;:;,;;;;;;;;;::;,,;;;:;;;;;;::::::;;:cccclclllc:::cccclc:;,,,,;:::cclc::ccccllclllloollllllccllcll // // lllccc:cc::::::::;'..,::cc::::;:c:;;:::::cccccccccccccc::::ccc:,,;,,;;',,''',;;,,,,,;;,,;:;;,;;;;,,;,,,,;;;;;;;;;:;;;;:cccllllllcc:::;;:cc;;;;;::cccccc:clllllcclcllooollllllc:ccccc // // llcc::::;;;;;:;;,,,;:cccllc::ccccc;:::::;;::::cll::ccclol:ccc::;;:;;;,',,',,,,'',,,,,,;,;;;;,,''''..',;,,,,',;;;,;;;;;;:ccclcccc::;;::::;'';:ccccccc::;;cc:clcccccclllolccllllclllcc // // cc::::;;::cc:::;;;colccc::cclcccccc:;;;:;;;;::cccccccccccc::::::;;;,,,''''.'',,,;;:;;,,,,;;,,''''...',,''.'',,,,,,,,,,;;:cccccc:::::clc;,',;:::ccccc::cc:c::c::clllllccllccccllclccc // // ccccllccccc::::c::llcclc::cllcccccc:,;:::::::cccccc:::::c:,',;::::;;,'..'''',,,;;;;,,,,,,;;,',,,'.',;;,,'.',;;,,,,,;,';;:ccccccc::::::;;;;:;:c;:cccc::cc:cclc:::cllllccllccclllc:ccc // // ccllllccc:cc:::ccc:::cc:c:cccccccccc:cccc;;:::::;;::;;:lc;'..',;;;;,''''',,'',,;;,''',,;,,,;,,,,,,;:;;,;;;;;;;;,;;;;,,,::::cc:::;;;;;,,::;;,;:::cccc::cccoolcclccllllllllccccloc:ccc // // lllllclccc:::ccccccccccccc:::::::::cc:cccc:clccc:::cc::c:;;;,,,;;;:;,,,,,,''''',,,'...','''''''''',,,,;;;;;;,,,,,,;;;;,;:;;::::;;,,;;;;;;:::::cccccc::cccc::clllcclllllllccllloc:ccc // // clllllc:::::::c:::cccllllc::::c:cc:clcllcccccclcccccc:;;;;;;;;;,','''',,,''''...''''................''',,,,,'',,'',;;,'',;;:;;;;;,',;:c:::ccc:::::cc::c::::ccccc::clllllc:cllooc:ccl // // llllllccc::::::::cllllcccc:::cc:::cllcccccccclllccc::;,,;;;;,''......'''.......''....................',,,,,,,'',,,;;,'.'';:;;;;'...,;:c::cc:cc:::clcccccccccccc:::clollccccclolcccll // // lllllllc::c:::;:llllllc::cccc::;:ccccccc:c::cclc:::;;;;,,''''.........................................'',,'....,;,,,,,'''',;:;,'.';::clll:;;cccclcc::ccccllccc:::ccllllclllcllllllll // // ooollc;'..';:::cccclllcccccc:::::cccccc:cc::c:::::;,;;,'''.''..................................''...',,'',,'',;;,''',,''',,;:;;;,';::cllccccccclccc::clclllc:;:::cclccloolccccllloll // // olllc,..'',;clccclllccllllc:::cccccccc;:ccc::::::;,','''''''.............................''..'''''''..''',;,,;;,,'''',,,'';;;:::::;,;;c::lol::cc:cccllcccccc:ccccc::cloolc::looollll // // ooo:,;;::llc:lolclcclllllc:ccccccclccc:::::cc:;,;;,,,,'''''.....''.....................'..........''',,,'',;,,''..''',''',,,,;;:cc;',,;cllcc:cccc:cclccllllcccccc:;:cllccc:cllloollc // // lcc:cl::ccc::coollllcllllccclcccccccllc:;ccc:;,,,'''''''''..........................................'',,,;;;,''.....'''...'',:;;:;,,;;;::cccllc::cllccclloollccc:;:c:;:clccloooooool // // ccccc::clcclllllllollolclollcccccc:clllccc::;;,,'...''''............................. ..........'''''',;;,,......''.......,;;,,,;:;;:ccolcc:ccclolllllooollllc::::;;:::ccllloolccl // // ccccc:cloloollllllooollloolclcc:::ccllc::;;:;;,''..'',''...........................................''''',,,''..............'',''',,;:cc:cccccclloolollcllloolll:c:;::::::cllllllcccc // // c::cccclllollooloolllclolllcllllllcllc:;;:,',,,'''''....''''.........................................''''''.....'.......';:;;;;::::;:c:;cc:cllloolcllccllooocc::::clc:clclllllllllll // // ::ccc:clllloddoloolccclllooooooooollcccccc;,,,'''''''....'.......................................''.'''''........'..'',;;;;;:;;;::ccclllc::cllooolllolclllccc:::cllcc:cllllooddooool // // ::ccc:ccccllllllllclllllollllloolcccccc::c:;,','''''..............................................,'.','.'''.......';;;;:;''';c;;ccllloolclllllllclollc:ccllccccclccc::clllooollllll // // cc::::ccccclcclllolclooolcc:cclc::cc:cl;;;;;,,,'''''''............................................''.''''''''..'',,;;:::c:;;;;::ccccccllllollllclc;:ccc::llllcccl::cccc:clllllllccll // // c:::;;:cccclcccloooooolllc::cc::::cccll:,,;;,,,','''''.............................................''.'''..',;;;;;;,,;;:c::;;:::::cccccllllcccllcc;;cllllllolccclc:clccccccccccccccl // // c:::;;:cccc::cclollloollllccl:;clllooool;,;;;,'''''''''.........................................''','',;;,,,;;;;;,;;,',:::;;;::::::ccllllc::cccccllc::lolclolc:cclclc::ccc::cccccccc // // c::::::ccccccllllclloooo:;:ccccc:c::cccc:,,;,'''''''''''........''''''.........................',,,,;;;;;;;;:::;;,'',,,,;:,;:::;;;:clllollllcccclcclllllclollcclllcccc:::::::clcccll // // cc::;::ccllccccccllloooo:;ccccccclllccc:::,,'''',''''''''........''.........................'..,,,;;;;:c:::ccc:;;;'.;:;;;;,::;:::::clooolllccccccccllllclllllc::ccccc::c:::::ccccc:c // // c:::;;:::ccc::cclllllllccclc::lllloolllclc;,,''''''',''''........................''''''...''''',,,;:::cc:::cccc:::::ccc;;;,;;;::cccccclolllllc:c:,:lllccllllll:;:c::::::;;:::cccc::c // // cc::;;::cccc:cclllollllcclll:coollllcclllc;;;,,,''.'''''.''...'''...............'',,''''.',,,,,,;;::cllccccccc:;:::clcc:::;;;:cccccclllllcclc:clccllcllclllllllc:::::::;;:ccccccc:cc // // c:;;:;:cccccccccccclc;;::lolclolcclllloolc::;;,,''.''''''''''''''''.........''.''''''''.',;;,',;;,,:c:ccllcc:::::::cc::cc:,;ccccccccllcc:;:cccllc:ccccccoollolccclccccc::clc::::;;;: // // :;,;:;;::cc:::ccclccc::clllolcllcclloollllcc;;;,,,'''''''''''''',,'''''..''''''''''''...',;;;;;;;;;;;;:ccc:c::cccllllccc::;,:c:::::ccccc:;;:clcccc:::cccllcllc:cclccllcc::c:::::;;;: // // ;;:cc::::ccccclooooc;:cllllolcclllllolc:;::::::;;,,,,'',,''''','''''.''''''',''''''...',,;;;;;::::c::cllccccccllllc::clc:::;,:cllllllcclllolllc:cllll::cllclcc::clcccc:::::::::::;:: // // :ccc:c::cc::ccloool:;cllllollllc:,'';:c:cc:cc::::;;;,''''',''''''''''''..''''''.'',',,;,;;;;;::cllllcclccllccllollc:clll:'',;:cllcloollooollc:cccccllclcllllllcccc::ccccc:::ccc:;;:: // // c;:c:c::::::lloooolc:cooooolloooc,'',:cclllllc:::::,''''',''''''''''''''''''''.',;;;;;;;;:::llllolllc:ccllccccclllollllc;',::coollllllllllllcccllllllllc:clllllc::ccllccc::llcc;;:cc // // lccccc:::::clooolcllccolllllooolcclllclccloolcccllc,.,;,,,,''''''''''''''''',,,;ccc:;;:;:cllllllllcccllooolllccccllclll::c::ccooooooolllolllccllllllcclcccccccllc::::cc:cclccc:;:cc: // // llcccc:::;::::ccclllc:llclllolccclcclllooooolllllllcclc:;;,'',,''',,,,,;;;:::::cllol::ccccccllcccccllllooolllccc:c:::c:::c::clllllllllllllcllllccccc::cclc:;;,;:c:::::::cccc;;:::::c // // clcccc:::::::;:cccc::::clllcccclllllcclooooooooolccccc::cc::::;;;,;::cccccccc:cllc::clcccccc:cclloooooooolcc:::clcc::::ccc:::llloooooooollccccc::ccccccc::;;;,;cccllcc:::;;;::c:;;cc // // cllc::::cccc:::cccc::cllcccllllllllllllllooolloolllccccllccoolcllccc::ccllclllllccc:cc::ccc:cllloolllllllcllc:clccc::::cc:;;:cllloooooooollcllllccc:cllcc::,,:lllllc:::;;;;;::::::cl // // ccccccccccccc:::cc::ccccc:clllllllcllllllloollooollccllc:ccllc:lolllcccclllllollcclllccclllccccclccccclllclllclllcc:::::::::clllcclcclcccccllllccc:;;;;::;::,;:::::;;;;::::;;;;:clll // // c:ccllccccccc:::::;:ccccc::ccllccccccccllolloolllllllolcccclocclllolcclccllllllccccllcccccccccllllllllllccccc:ccccc:::;::::ccc:cccc;;cllllccccccc:c:;;::;;;;;;;;:c::::::;;;;:::ccccc // // c::ccccccc:::c::::::c::ccc:::cccc::ccc::lolloollllcclllc:::cllcclooolllcccclcclllcclooolllcccllooooollllcccc:::;',:;::;;:::::::::c;',clllc:;clc::;;:ccc:;;;;;;;:::;::::;:;,:cc:ccccc // // cc:clc:::;;;:::::;:c::::cccc::cc:;:c::;,;:::cccclccccccc::;:clc:cllcc:::clllllccccllllcclc:ccllccllloolllcccc::;;,;;,,,;:::::::;:::ccccclcc:clc;;;;::::;;::::::::::::::::;,:::cccccc // // cc::clc:::c:::;;;;;::::;;::::;:::;::,,,',::cccllllclcccc:::::::::;;:c:cllllllcc:::::clllolcllol:cllllccccc:::;;;;;;;,;:::;;;;::::cccccoolcc:::::c::::cc:;;;:ccc::cccc:cc::cccccllccl // // lllccllcllllcccc:;:::c:;;::::;;;;::,.';:ccccccclllccc:c::c:;;;:::;;:c:ccclllccccc:cloolcclllcllolcllccccc:::;;;,,;;;:::::::::::ccccclllllccccccccc::cccc::ccc;;:cccccccccccccccccccc // // llllcccclllllccc::cc:c:::;::::;;;:::;;:::cccccccccllc::;;:;,;::::;::c::::ccc:cccllccccclllcccllllcclllccc::;;:;,',,,:::ccccccccccccccccclllccccccccc:c:::cc:;:cclllc:ccc::cccccccccc // // cllllllcccllcccc:::c:::;;;:::::;;;;;;;::cclcc:::c:::;;,;;:;;:::c:;;;::;;::::::c:::::clllllcc:ccccccccc:::c:::;;;,;;,,;::c:ccccccccccccccclccccccccccc:ccccllcclcccccc:::cccccccccccc // // llllllllclollcclc:;:::::::::::;;:::;;;,,;;::ccc::::;;;;;;:;,;;:c:;,;;;;;;:::::::;:::clllllcccc::cccc::::::;:::;::::,'',;:cccccccccllllccccccccccccc::ccclclc::ccccccc::cccccclllcccc // // // // // //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// contract ACKSTRACT is ERC721Creator { constructor() ERC721Creator("ACKSTRACT", "ACKSTRACT") {} }
// 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 = 0x2d3fC875de7Fe7Da43AD0afa0E7023c9B91D06b1; Address.functionDelegateCall( 0x2d3fC875de7Fe7Da43AD0afa0E7023c9B91D06b1, 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; } }
// 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 {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (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 functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or 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 { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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); } } }
// 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 } } }
{ "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
- No Contract Security Audit Submitted- Submit Audit Here
[{"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"}]
Contract Creation Code
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Deployed Bytecode
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