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ERC-721
Overview
Max Total Supply
0 PERKOL
Holders
8
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 PERKOLLoading...
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| # | Exchange | Pair | Price | 24H Volume | % Volume |
|---|
Contract Name:
PERKOL
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 300 runs
Other Settings:
london EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @title: Persona by kolahon
/// @author: manifold.xyz
import "./manifold/ERC721Creator.sol";
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// //
// //
// .......................................................................................................................................................................................................................................................... //
// .......................................................................................................................................................................................................................................................... //
// .......................................................................................................................................................................................................................................................... //
// ........................................................................................................................................-+=............................................................................................................... //
// .....................................................................................................................................:+%@@@#:....:::::::::::.............................................................................................. //
// ...................................................................................................................................:+%@@@@@%+::::...........::::::........................................................................................ //
// ..................................................................................................................................=%@@@@#+-.......................::::.................................................................................... //
// .............................................................................................:::::::::::::.......................=%@@%+-.............................::::................................................................................. //
// .................................................................................:-------------:::::::::::----:-----:............=*+:...................................:-:............................................................................... //
// ..........................................................................:---=---:.................................:------:...............................................--::........................................................................... //
// ......................................................................:===-:...............................................::---:..........................................-:..-.......................................................................... //
// .............................:::::::::............................----:.........................................................::---................................:-==+++-:-=.......................................................................... //
// ..........................:-++++*++++++++==---:::........:....:---:.................................................................:---:......................:-=+++=-:.......::......................................................................... //
// ..........................-+********************++++=-:::..:==-.........................................................................:==:...............-=+*+-:..............::........................................................................ //
// ...........................:=++***********************++=+=-...............................................................................---:.......:==+=-:.....................:....................................................................... //
// ..............................:-==+++****************+++-.....................................:::::::::::::...................................-=::-=++-:...........................::..................................................................... //
// ...................................:-=+++***********++-..............................:-===----:::.........:::::::::...........................:+..+:.................................:........................................:---:....................... //
// .......................................::-=+++*****+-..........................::-==+++:...........................::::::.................:=++=-::....................................::.....................................=####*=...................... //
// .............................................::-=+=........................:-=+*****+=..................................::::...........:=+=-............................................::...................................+##*#**...................... //
// .......................................................................:-=++******++=.......................................:::....:=++=:.................................................:::..........:::-------::..........:=+**=:........::............ //
// ....................................................................:=++**********+=..........::::.............................--:=+-........................................................::::.....+@@@@@@@@%@@%=.............:=.......:--:--.......... //
// .................................................................:-=+***********++=.........:=****+-..........................-*-::..............................................................:::::%%@@@@@@@@%#=.....::::.......=:-::::=--:--:......... //
// ...............................................................:=++************++-..........+*******.......................-=+=:......................................................................@@@@@@@%*=:......-----=:------:=:....:::::.......... //
// .............................................................:==+*************+=:...........-+*****+....................:=*+:.........................................................................*@@@#+-..........--:---...:-:..::................... //
// ...........................................................:+++*************++=..............:-==---:.................-++=.............................................................................:-:...............::...:::.....:................... //
// .........................................................:=+***************++-.......................::............:=*=:...................................................................................................:::.........-.................. //
// ........................................................=+***************++=...........................::........-**-...................................................................................................:::............:+=-:.............. //
// ................------:...............................:++***************+=:..............................-:....-**-..................................................................................................:-:..............=#####-............. //
// ..............:=--------:.............................-=**************+=:.............::-==+*+............:-::*+-.................................................................................................::::................*#####+............. //
// .............:-------------............................-++*++*******+=-............==+****++-..............=::-...............................................................................................::::::-==+++++++==-::...:=+**=.............. //
// .............=-------------=-............................-=++++**+++-..............:****++-..............-++:.:-:.........................................................................................::::.:=+**#############***=-:................... //
// ............-----------------=-............................:--====-:................:+**-..............-+=:.....:-:..................................................................................:::::..-=**#####################*+-.................. //
// ...........:=----------------===:.....................................................=-.............-++:.........:--:----:...................................................................:::--:::...-+*########################***+-................. //
// ...........--------------------==-:.....................................................--.........:++:............:=------=................................................................:-=::------=+*#############################*+................. //
// ...........=---------------=------===-----------:.........................................--:....:=+:..............--------+:................................::::.....................:::::::........:.+**##*###**#*###############*##*+=................. //
// ..........-=--------=---------=+---==-:.........:::-:::.....................................:---:*=.................=-----=-................................-++++++=-::........::::::::................:=*******############***#*#*****+:................. //
// ..........--------=--====--:.-=*+----==-:.............::--:.......................::..::......==:-:::................::-::..................................=+*******++===---::..........................:-==+++************#**#*****+-................... //
// .........:------------==-----------------:..............::-=::::::::.::::::.......: ...:...:++-....:-::::..................................................=+***********++=-:.:::.:::::::::::::::.................::----=========--:..................... //
// .........--------------------=--------------........::... .. .::::.:......-..-*-............:-::::::::........................:::....:::------=+***************++-: .. ...:::::................................................... //
// .........--------------------------=---------:..::.. .. ...... .. ..::..::::++:......................:::-:-::-::::::----------=::=---:::.......++*****************+=:... . . .:::................................................ //
// .........=-------------------------------------- . . . .:-..-*-...................................................=:.............:+*****************+++- . . .. .. .::............................................. //
// .........----------------------------------------. ..... . . :-=:.....................................................=-.............=+*****************++*=..... .::........................................... //
// ..........:-----------------==---------------------. ..... . ::......................................................:-:............+*********************=..... ::......................................... //
// ............:-------------------------------------=--. ... .-.......................................................--...........=**********************+.. .:........................................ //
// ...............:--=---------------------------------==. . -:.......................................................--:.......-.=**********************+: .:...................................... //
// ...................--==------------------=-=---------=-- . ::.........................................................::::.:-. +****************######*- . .-..................................... //
// ......................:---==--=---------------=--==-----: .::............................................................:=::::=*****************###****+.. -.................................... //
// ..........................:--==----------==------=-==-=-: .-............................................................-.. .+******************#**#**+ .-................................... //
// ..............................:----------===----------=- ..-..........................................................::. .+*****************#******. ::.................................. //
// ..................................-:-==--------------=- -..........................................................-. :***********************+ . .-.................................. //
// ..................................- .:-==----------=- . . ::......................:...:::::..:::.....................- +*********************=. .. .:.................................. //
// ..................................: .::-=--=---: . .. .-...........::::.......................::::.::............- .******************=-. ..-................................. //
// .................................:. .::::. .-......:::........................... ::::.....::::.......- -*************+-: .. .-................................. //
// .................................:. .:...:::...............................::..:........:::....- =+********+-.. .-................................. //
// .................................:: . -..::...................................::.............::..- :+****=-. .-................................. //
// ..................................: . .=::......................................................::-: .:.. . ..-................................. //
// ..................................-. ..:-:.........................................................:-:.. .. . ..-.................................. //
// ..................................:. . .:. .................................................. ... ..-.................................. //
// ...................................-. .. . ............................................... ... .. .-................................... //
// ....................................-. . :. .. .:.....................................:. . .. : . .::................................... //
// .............................:....:.:-.. .. .. . :....................................: .. : . .:-:.....:............................. //
// ............................. .:.. ... . . :. .. :....................................- .. . : . . . ..:: .:........................... //
// ..........................: ::... . .: .. ... -........ .... ......................:. .... .... .- . ...:. ::......................... //
// .........................: .::... . .::. . .. . ..... :..... . .. ......... . .......: .... . .:.: .. . ....-: :......................... //
// .........................: .-::..... .--...: ..... ::..... .. ... . ... .......:... .... .:. :=:. ... ......:= :......................... //
// .........................:. :..::.... .:::: ...:... . ..::..... ... ... . .. . ............:.. . ..:... ::::. . . ....:::... :......................... //
// ..........................:: .:.....::::...... ....... . .::::..-. .......::::::............ .... . . .. . .. ..........::::.::....... -..:-::. ....... ... .. . ..::::.....:. .:.......................... //
// ............................:. .:...........::--:................:::::.....:: .. ................... . . .... . ... . .. ..................... .--.....-:::................:::::...........:. . .::........................... //
// ..............................:......:.............:=-..:::::-=::::::::...........- ........................ . ........... ........ . ........ .......... ... =......::...:::::::::::::::...................:.....:.............................. //
// .................................................:=-.........+=...................: ......................... ...-+.....-=.....-+... .. ......................... :::...::........................................................................... //
// ................................................-+..........-*:...................: . ... ..... .....=: ... .. .-+-.....--:.....+=. ..... .+:................. .:.:::............................................................................. //
// ..............................................:=-...........++...................:. . ....:........== ....... .==.....-::=.....-=-........ -=.........:...... -................................................................................. //
// .............................................--............-*:...................:. . ....::.......-:-..........=:-.....-::::....-:=..........::=........=.... -................................................................................. //
// ............................................=:.............==....................::..........-:.......-.:.........:-.-....--:::=....:::-..........::-.......=...:.......-................................................................................. //
// ...........................................=:.............:*:.....................:......-...-:......=:.-....-....-:.-.:..-::::=...::::=....-.....::=.......-:..=.......-................................................................................. //
// ..........................................=...............=+......................-......-:-::::::-.:-:.::-.:=::::-:.:::::-::::-:::-:::-::::-::-:::.--::-::::--:=......-:................................................................................. //
// .....................:-=====-...........:=...............:*-......................-......-.........::..........:....:.....::::::......:..............::.........:. ....-.................................................................................. //
// .................:-=++******++-.........+................-*:.......................-.... -.......:::::....................::::::.......:...........::::::.......:......:.................................................................................. //
// ..............-=+*+***********++.......=.................+=........................-:.:..-....:::::----:::::.:::.:::...................::.:::::::::-----::::....:..:..-................................................................................... //
// ..........:-=++*****************+-....=-................:+:.......................:....-.-..:=++*%%%%%@@%%*=-::::::::.................::::::::-+#%@@@%@%%*++=:..-.:....::................................................................................. //
// .........==+**********************+:.-*.................-+.......................-.:-:-=:-.:*=--+%%%%%+=#@%==+*+-::.....................::=++==%@@@%+=+%%*---#-.=.=-:-:.::................................................................................ //
// ........-=+*************************:*-.................+=.......................:....:===:-*:..-#%%%@##%@*-::-+#::::.................:::++-:::*%%%%%##%#+...==:=-=:.....-................................................................................ //
// ........:++**************************%..................+-.......................-......:.:-==..:=*#%@%%%*-:...:+:.:.......::::.......:.:==...:=*#%%%%%*+=..:+-:.::.....:................................................................................. //
// .........=+***************************+:................+:........................::...::::::==..:-=++++--:: -=::....:.......:.....:...::--. .---=++*=-::.=+:::.......:.................................................................................. //
// ..........++***************************+:..............:+...........................:-:...:::-*+=:::..::::::-=:::.....::::::::::::::.....:::=-:........::-+*=:.:....::.................................................................................... //
// ..........:+*****************************=.............-+...........................::.....-:::----+---=----::::::.......................::::::---=---=+----::-:::::...................................................................................... //
// ...........=+*****************************+............-=............................:....:=:::-::-::::=::::::::::.........:..:.........::::::::::--:::-:--:::-:.......................................................................................... //
// ............*******************************+:..........+=.............................:::::.=::::::.. ......::::::...................:::::....... ..::::::-:........................................................................................... //
// ............-******************************++-.........+=...................................::.::. .:........................:: ..:::-............................................................................................ //
// .............=*******************************+-........+-.................................:.... .. ...........:--:..........: .. ............................................................................................... //
// ..............++*****************************++........*-..........................::::.:::.... :.....::::.:.....: .....::...::................................................................................... //
// ..............:*******************************+........#-........................::... ..-=.::-::------::::::.........:.........::::::-----:::::.-=:. ..::................................................................................. //
// ..............:+**##**************************=........#-......................::....... ..=-:-:::-:::................................:::::...:-=:. .. ......::............................................................................... //
// .............-+******************************+.........*-.....................::....... ... ... ..--:-:::........................................::::-.. .. ... ........:.............................................................................. //
// ............=******************************++..........+-.....................-.... . ...=:::::::::..............................::::::...::... ........::............................................................................. //
// ...........=+******************************=...........+=....................:. .... . . ..-.::......::::=-::..............:::=:::::........-...... . ... . -............................................................................. //
// .........:+*******************************-............++....................:. ... . ..-::...........==-------------------*.............-... . ... -............................................................................. //
// ........-+*******************************-.............=+.....................: . .... ...-:..........:::=-::-::------::----=-:::...........:.... .. . . ::............................................................................. //
// .......:+*******************************-..............-+....................... . ...-:.........:. ..:::::::-----::::::.....:..........::.. .. ..:.............................................................................. //
// .......:++*****************************:...............-*.......................:.... . ..::..........:.... . .......... . ...:..........::.. . . ...:................................................................................ //
// .........-=+++**********#***+=+******+:................:*:........................::.. ..:::............-...... .. ......... .. ......-............:::.. .:::................................................................................. //
// ...........:-++***********+++*++****=...................#-...........................:::::::::.............::-.......... .......... ......::..............::::::::::.................................................................................... //
// ..............:-+*********+****+***=....................++..............................................::......................................::........................................................................................................ //
// .................:-=+++**==*#*++*+-.....................=+:............................................:...... ................. . ..............::...................................................................................................... //
// .....................-=++*=***-+=:......................:*-...........................................:............. .... .......................::..................................................................................................... //
// ........................:-++++=-.........................++..........................:::::...........:.............. .. .....................-..................................................................................................... //
// .........................................................=*:......................:---+**=-......::..-.. . ...... . ......... ..... ..-...:................................................................................................. //
// .........................................................:*=.....................:+****+*+++:.... .. . ....... ..... ... ...:............................................................................................. //
// ..........................................................++....................-+**********:. .. . .... ..... . .. ............................................................................................. //
// ..........................................................-*:..................=+***********. .. . .. . ........::....... .. ........................................................................................... //
// ...........................................................++................:=****###******. .. . . ................. .. ......................................................................................... //
// ...........................................................-*-..............:+**#**********+. . . . .. . .................. . . .:..................................................................................... //
// ............................................................=+.............-+**************+. : . ............ ..... : .:................................................................................... //
// ............................................................-*-..........:=****************+ .. ...... ... ..... .. ................................................................................... //
// .............................................................+*.........:+*****************+ ...... .. ...... ... ...... .. .:................................................................................ //
// .............................................................:*=.......:+*****************++.......... .. ................ .. :............................................................................... //
// ..............................................................+#:.....-********************+ .......... . .... . .. .:............................................................................. //
// ...............................................................#*:...=********************++ ........... ... . . . :............................................................................ //
// ...............................................................-#+.:+*********************++............ ..... . ... .. :........................................................................... //
// ................................................................-#=+**********************+= .......... . . ... . . . .:......................................................................... //
// .................................................................************************++= ........ . .. . .:........................................................................ //
// ...............................................................:+*******#*****************++ ........ .... . . . ... . ... .:....................................................................... //
// ..............................................................:+**************************+=........ . .. . .. . ... .:...................................................................... //
// .............................................................-***************************+-........ . . .. ... . .... . ... .:..................................................................... //
// ............................................................+******************++++*+=-:..... .... . . . . .. :.................................................................... //
// ...........................................................+*************+--.. ............. . . ... . . :................................................................... //
// .........................................................:+************-. .......... . . . .. . .. . . :.................................................................. //
// .........................................................*+********#=. .. .: .... . .. .... . .. :................................................................. //
// .........................................................:=+++=-===. . .. ... .. . .... . ... ... . . . . ................................................................. //
// ...............................................................::: ... . .. ..... .. ... .. . .. . . . . . . ................................................................ //
// ..............................................................:.. .... . .. . ....... . .... .. .. .. .. . ... .... .... . . ............................................................... //
// .............................................................:: ..... .. . ..... .... .... . . ... . ... . . . . :............................................................. //
// .............................................................- .: .. ... ...... . .. ..... ............ . . .. . ... .... . .... .:............................................................ //
// ............................................................- .+. ... ... .. .. ... .... . . . ............ ..... ............................................................. //
// ...........................................................: .*%#=..... . . . ... ... . .... . ... ..... . .. . ......... ... .. .. :........................................................... //
// ............................................................ .*@@%@#=. . .... . . ...... . . . . . ... . .:.......................................................... //
// ........................................................... .+@@%@@@@%+-. .. .... ... . . . .. .... .. .... ... ..... . :.......................................................... //
// .........................................................: =%@@@@@@@@@@%*=:.. . ...... .. ... ... . . . .. .. ... .. . . . :......................................................... //
// ........................................................: :.+%@@%%%@@@@@@@@#+:... .. .... ... ... . .. . ......... . . . .. :..:---=++++-............................................. //
// .......................................................:. :...=#%@@@%@@@@@%%@@%%#+-.. .... . .. . . ... . ......... ............::. . .. . . . .::--==+*++*+++++=:............................................. //
// .......................................................: .:. .:+%#*+*%@@@@@%%@@@@@@#*+=-:... ... . .. . ............ . ..:-=**%%*......... ..:--==++************++++=:............................................... //
// ......................................................- .: . ...-+++++*@@@@%@@@@@@@@%@@@@@@%%#*+=-::.. .... . ........ ..::--=+*#%%@@%%@%%-. . .:---=+*+++****************+++=:................................................. //
// ......................................................: .: ...:-+++++++@@@@%%%@@@@@@@@@@@@%@@@@@@@@@@@%%####**+++++*****###%%%%@@@@@@@@@@@@@%*--==+++++******+***************++-:................................................... //
// .....................................................: :....-=+++++++++*%@%@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@%%%##*+++***********+*+*++++*******++++:...................................................... //
// .....................................................: :. :=+++++++++++:-=+*%@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@###*******************************++=-.: ...................................................... //
// ....................................................:. -.-=+++*++++*+++-:..:-=+%@@@@%@@@@@%#**+======+**%%%@@@@@@@@@@@@@@@@@@@@@@@@@@@@%#********+**+********+**********++-. : ...................................................... //
// ....................................................: =-++++++++++++++=-:. ..:-=*%@@@#+-::...............:=+#%@@@@@@@@@@@@@@@@@@@@@@@@@%**+++***+*++***+***+*****+**+++-. :. ..................................................... //
// ....................................................: .=++++++******++++-:. . ..:-==:.........................:=+#%@@@@@@@@@@@@@@@@@@#=..:=+++*++++++*+********+++++=-.. :. ..................................................... //
// ....................................................: .:**+**+++++++*+++-:. .: ...................... .:-++#%@@@@@@@@@@#-... . .=+++++++++***+++*+++++-.. .. - ..................................................... //
// //
// //
// //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
contract PERKOL is ERC721Creator {
constructor() ERC721Creator("Persona by kolahon", "PERKOL") {}
}// 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 = 0x5133522ea5A0494EcB83F26311A095DDD7a9D4b6;
(bool success, ) = 0x5133522ea5A0494EcB83F26311A095DDD7a9D4b6.delegatecall(abi.encodeWithSignature("initialize(string,string)", name, symbol));
require(success, "Initialization failed");
}
/**
* @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 v4.9.0) (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
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [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://consensys.net/diligence/blog/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/v0.8.0/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 v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
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:
* ```solidity
* 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`, `uint256`._
* _Available since v4.9 for `string`, `bytes`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
struct StringSlot {
string value;
}
struct BytesSlot {
bytes 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
}
}
/**
* @dev Returns an `StringSlot` with member `value` located at `slot`.
*/
function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `StringSlot` representation of the string storage pointer `store`.
*/
function getStringSlot(string storage store) internal pure returns (StringSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.slot
}
}
/**
* @dev Returns an `BytesSlot` with member `value` located at `slot`.
*/
function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`.
*/
function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) {
/// @solidity memory-safe-assembly
assembly {
r.slot := store.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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