Contract Source Code (Solidity Standard Json-Input format)

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// SPDX-License-Identifier: MIT
//
//
// ┌▄═==╗▄═==▄▄═▄▄                     ,─¬"¬─╥▓                 ,
// ╞▌   ╫█   └█ ██                    ▐       █                └█▀
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//      ╫█      ██    ╫█ └█µ     ,    █        ▌ ╞█  ╙█     ▐█  █▌ ╙█       ╓╖  ╙▀▌
//     ,██,    ,██   ,██,  ▀w  ,⌐     ██.    ,^   █▄,- ▀, ,╓▀  ,█▌, ^▀, ,.' ╙█, ,x
//                                
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// ██████▀╚░▒╬╬╠░▒▄▄▄▄▄▒▒▒▒╠╬╬▒╚▀███▄ ███           ╟█████████▀▀└            ╟██░░░
// ███▀░▄▄████████████▀███▀██████▄███████            █████╙                   ╙██░░
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// ███▄,     █▌ ╙████▀ ██  ,▄▄███████████            ╙█▌     ▀▀███▄,            ╙██
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//   ╙█████████▄▄▄▄▄▄███████████▀     ███             ▐█▌     ,▄▄▄▄   ,,▄▄▄█████▄▄╟
//      ╙▀█████████████████▀▀`        ███              ██ ▄#▀╙`,▄▄█████████████████
//          ╙█████████▀▀╙             ███              ██   ▄█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
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//         ██▐███                     ███              ╟██████▀`  █ ╟███▌ █  ╙▀███╟
//        ██ █▌██⌐        ▄▄▄▄▄       ███              ▐███▀      ╙█    ,█▀     ╙██
//       ██ j█▒╟█▌      █████████▄    ███              ]███████▄,   ╙▀██▀         █
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//   ╓█▌    ╫█╠╠╚██    ███▌       ╙██████               ██▌╬╬╬╬╬╬╬╬░╚▀████╬╬╬╠█████
//   ╙██▄   ██╠╠╬╟██   ╟██▒         ╟███▌               ██▌╬╬╬╬╬╬╬╬╠╠╠╬░╚▀█████╬╟██
//     ╙█▌  ╫█╠╠╬╬╟██  ▐██▌    █████████`       ,,,,,   ╟██╠╬╬╬╬╬╬╬╬╬╬╬╬╠╬╬░╚▀█████
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// ╟▌        ██▒╬╬╠╠╬╠░╟██████               ██╬╬╬╬███░▒▒▒╠╠╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓█▌╟█▌
// █▌        ╟█▌╬╬╬╬╬╬╠╬╟██████▄             ██╬╬╬╬███▒╬╬╬╠╬╬╬╠▒▒╬╬╬╬╬╬╬╬╬╠╬╟█▌ ██
// █          ██░╬╠╬╬╬╬╠╟█▒██████▄           ██▒╠╬╬███▒╬░▄████▀▀▀██░╬╬╬╬╬╠╬╟██  ██
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// ▌           ╟█▒╠╬╬╠╠▒██╬╟█▌ ╙▀██████▄     ╟██╬╬╬██▀╙  ,╓▄▄█████▒╬╬╬╠╬▒██▌   ╟██
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//                 ╚████╠╬╬╬╬╫█▌              ▐█▒░░░╙▀██████░╬╬╬╬╠░███└       ]██
//                  ╠██▒╬╬╬╬╬╬██              ▐█▒░░░░░░░██▀██▒╬╠░███▀        ▄███
//                 ╓█████▒╬╬╬╬▓█▌              █▌░░░░░░░░╓██▒╬▒███╙        ▄████▀
//                ╓██▀░░▀██▒╬╬╬██              █▌░░░░░░▄██░░▄██▀`        ▄████▀
// █▄,          .██▀░░░░░░╙███▒╟█▌             ██░░░▄██▀▒███▀╙        ,██████
//
//                              The Stoics by Gabe Weis
//                                   thestoics.art
//
//                              Assisted by Merlyn Labs
//
//                           Smart Contract by Ryan Meyers
//                           An implementation of ERC-721A
//
//                           Generosity attracts generosity
//                         The world will be saved by beauty
//

pragma solidity ^0.8.16;

import "ERC721AQueryable.sol";
import "ERC2981.sol";
import "draft-EIP712.sol";
import "ECDSA.sol";

contract TheStoics is ERC2981, EIP712, ERC721AQueryable {

  error InvalidMintKey();
  error InsufficientAmountSent();
  error PublicSaleNotStarted();
  error NoMoreThanTwentyPerTransaction();
  error ExceedsAllowance();
  error ExceedsMaxSupply();

    struct MintKey {
      address wallet;
      uint8 free;
      uint8 allowed;
      uint8 paid;
      uint128 price;
    }

    bytes32 private constant MINTKEY_TYPE_HASH = keccak256("MintKey(address wallet,uint8 free,uint8 allowed,uint8 paid,uint128 price)");

    address private _signer;
    address private _owner;

    uint8 public day = 0;

    string public baseURI;

    address private constant _ARTIST = 0x95975DEEeA11a798d3737E0Badb821ECd38CCED9;
    address private constant _TEAM = 0xE2A68B1B0061e14Ef13Fc936215aF4587e50b315;

    uint private constant _maxSupply = 5000;

    constructor(
      string memory name,
      string memory symbol,
      address signer,
      address receiver
    )
     ERC721A(name, symbol)
     EIP712(name, "1")
    {
      _signer = signer;
      _owner = msg.sender;
      _setDefaultRoyalty(receiver, 1000);
      baseURI = "https://nyfti.xyz/api/v1/stoics/metadata/";
    }

    modifier onlyOwner() {
      if(msg.sender != _owner) revert ApprovalCallerNotOwnerNorApproved();
      _;
    }


    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╙████░╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬░▄▄░╬╬╬▒███▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬░╬████╬░███▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╙███╬╫████░╬╬▒▄░╠╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╟████░╬▐███▄░█████████╩▀▀██▄░╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬░████╬░██████╬███████░░░░░└╩▀▀█▄░╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠████▒╬▀█████████████░░░░░░░░░░ ╙▀▀██▄▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠█████▄╬░╬█▀█████████░░░░░░░░░░░│▄▄█~└╠▀▀█▄░╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╟███████████████████░░░░░░░▄█▀▀╙└░░│,░░░░'╙▀▀██▄▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╙▀████████╠╡╙██▀╬╬█░░░░▄█▀.░ ▄█████▓█████▄░░░│┘▀▀█▌╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠╠╬╠╬╬╬╬╠█╬╬╬╬█░░░░╙░░╓████████████████▄░░░░░█▌╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬░██╬╬╬╬▌░░░░░░█▌    █╩███▌█   ▀▀█▌░░░j█░╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠▄████▒╬╬╬▌░░░░░░.███▄▄▄██╬██▀ ,▄▄██▌░░░██╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠██▓███▌╬╬╟▌░░░░░░░░└████▓▓▓██▓▓██▀▀ ░░░▐█▌╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███████▌╬╬╟▌░░░░░░░░░,▄█╣████████▄'░░░░░█╫░╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓████████╬╬╟▌░░░░░░░███▀██████████▓╬█▄░░█¬█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬░█████████╬╬╢▌░░░░░░██▄,  ▀╬█▀▓█    ╙██░j▌▐▌╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓█████████▒╬█▒░░░░░░░╙███╬╬╬╬╬╬█╬╬██▀▌└░█ █╣▌╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██████████▌╬╫▒░░░░░░░░█▄▄╫╬╜╙▀█▀▀╙^░░░░▐▌ █╬█▒╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠██████▌█▓█▌╬╫▒░░░░░░░]█████████░░░░░░░░█ ▐██▀▒╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▒███▓███▓███╬█░░░░░░░░█╜▀█████▀█▌░░░░░░▓─ ██▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╟███████████╬█░░░░░░░j█   └╙▀█▀█▀░░░░░j▌  ██▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠███████████▒█░░░░░░░▀█       ╟▒█▀▌▄▀██  ╟██▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠▓███████████▄█░ ████▄░█        ╙  ██     ███▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠╠▀██████████████▓██╣█▀▀          ,╫▌▄    ███▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▐███████████████████▌           █┌╠▄▄▌  ╫███▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╟██████████████▀█▓█▄         ▐█▀└ █'  ████▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠██████████████▄██▄█           █▀╙   j████▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████████     █`         ▌'     ╫████▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████████████└└╙╙╙           ▀▄     █████▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███████████▌                  `█   j█████▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╫█████████████████▄▄▄▄,         ╜▄ ██████▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╫████▓▓███████████████▓▓█████████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬░░░░│││┤┼╚┼╙╨╩╠╬╬▀▀▀▀▀▀╫█▀▀▀█████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠█░░░█████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▌░]█████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╟▌.██████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╟▌███████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠█████████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▒██████████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▄███████████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬░█████████████████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    //
    //      Begin at once to live, and count each separate day as a separate life.
    //                                                                     -Seneca.
    //
    function start_a_separate_life() onlyOwner external {
      day++;
    }


    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬╠╠╠╠░█▒╠╠╬╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▓██╠╠▒█╟▌╠φ██▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█░█▒╠█▀╬█╬▓▀█░╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠▒▄█╝▀▀▀▀██▒╬╟▒█▒╬╬██▒╟▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▄╝▀     ▄█╙│█╬╬░██╬╬╬╫▌╠█▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█▀      ▄▀ ░░░█▄▄▄▄▄▄▄▄▄▒▒█╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠░█`      ▄█░░░░░░▌           █▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠▓▀       █░░░░░░░░▌          ╟▐▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬█        █░░░░░░░░░█          ▌╟▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬█        ▐░░░░░░░░░░█         ▐ ╫╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬█         ▌░░░▄#░░░▄▀█         █ █╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█         █░░▄▀ ░.█▀  █        ▐⌐ █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╟▌         ▌░▀│░▄█`    █        █  █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█         ▐▌░░▄▀       █       j▌  █▒╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▌         ╟░█▀         █       █   ██████▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╟▌        ,██╗╗▄╗▄▄▄▄▄▄▄█       ▌   ▌╟▄▀▀█▀╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╫       ▄▀ ╟▒░░╙▄█▄█░░░░█      ╟    ▌╠░░░▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╫     :█▄  ╟▒░░░░░░░░░░░█      ▌    ▌╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╟   ▄▄▄  █ ▐▌░░░░░░░░░░░█     ▐æ▄  ▐▌╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█╗█╟█╬█æ█  █░░░░░░░░░░░█  ,     █ ▐.█╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬╟█╣▌    ╟░░░░░░░░░░░█#▀▐█▄▌▐▄█ ╞  █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╟███▀      ▌░░░░░░░░░░░░░]██     ╟█╠░╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█▌       ╟▒░░░░░░░░░░░░░█▌     ╟▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠▓╝██▀▀        █░░░░░░░░░░▄▀▀▀▀ █   ╫╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╣▌              █░░░░░░░░ª█`   `█   █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╣▌               █░░░░░▄▀▄╙█ææ══▀   █╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▌                █░░░░█  ▀         █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█                 ▀▄░░▀▀█▀*≈═══K≥mæ█╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╟                  ╙█░░░█         █░╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▌                   ╙█░█        █░╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬█                ,▄æª▀▀█       █░╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠▌      ,▄▄ª▀▀╙        █      █░╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█╗██`                 ▌     █▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬╠█▄               ▌    █▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠░█▄             ▌   █╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█            ▌   █╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠░█           ▌    █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠▌          ▌    ╟▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█          ▌     █╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╟▌         ▌     ╟▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▌         ▌      █╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█        j▌      ╙▌╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    // ╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█        ▐        █╬╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠
    //       Waste no more time arguing about what a good man should be. Be one. 
    //                                                – Marcus Aurelius
    //                                                  Meditations, X, 16
    //
    function become_stoic(bytes calldata signature, MintKey calldata key) external payable {
      /*
       *
       *  During Day 1 and Day 2, a MintKey generated by _signer is required for mint
       *  This helps reduce the cost of storing a bunch of addresses on the chain
       *
       */
      

      if (day < 2){
        if (!search_after_truth(signature, key)) revert InvalidMintKey();
        if (msg.value < key.price) revert InsufficientAmountSent();
        
        
        
        if (0 < key.free) {
          if (_getAux(msg.sender) == 0) {
            if (_numberMinted(msg.sender) + key.paid + key.free > key.allowed) revert ExceedsAllowance();
            if (totalSupply() + key.paid + key.free > _maxSupply) revert ExceedsMaxSupply();
            _mint(msg.sender, key.paid + key.free);
            _setAux(msg.sender, _getAux(msg.sender) + key.free);
            return;
          }
        }
        if (_numberMinted(msg.sender) + key.paid > key.allowed) revert ExceedsAllowance();
        if (totalSupply() + key.paid > _maxSupply) revert ExceedsMaxSupply();
            
        _mint(msg.sender, key.paid);
        
      } else {
        // This really should only happen in a rare case where gas was super low and the day passed 
        become_public_stoic(key.paid + key.free);
      }

    }
    function become_public_stoic(uint64 how_many_stoics) public payable {
      /*
       *
       *  Once public mint is live (day >= 3), MintKeys are no longer required.
       *  Will there be bots? Maybe, but remember bots are just stoics without skin.
       *
       */
      if (day < 3) revert PublicSaleNotStarted();
      if (msg.value < (0.111 ether * how_many_stoics)) revert InsufficientAmountSent();
      if (how_many_stoics > 20) revert NoMoreThanTwentyPerTransaction();
      if (totalSupply() + how_many_stoics > _maxSupply) revert ExceedsMaxSupply();

      _mint(msg.sender, how_many_stoics);

    }



    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░█░░]█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░╟█░░▌█░░╟█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░█╙▄╚▒╙╦╟▒█▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█░╙▓░░╙▀░╠█▄░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░▀██▀▀▀╙╙╟██╙▀█▄▄░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█░░░░╓█╬▄▀█▀▓▄░░█▀█▄▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█░░░]█░╬╚╚▀█╙░│░▐▒░░░▀▀▀Φ▄▒░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░█░░░▄▀▒╬╬╬╬╬█░░░░╠▄▄╫╣█████████░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░█░░░▓░╬╬╬╬╬╬░█#▀╙░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░▐▌░░▐▒╬╬╬╬▒▄▀╙█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░▄░░░░░▌░░░█╬╬╬▒█▀░░░█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░▄▓█▄█▓▓███│░░╟▒╬╬╔█░░░░░█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░╓▄██▀▀╚░░░╟▌░░░█╬╬╟▌▒▄▄░░░█▄▄╥░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░█░╬▒▄▓╗▄░╠█░░░░█╬░█░│░│░│░█╬░█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░▌██╝▓█▌▀██▒░░░░█╠╫▒▄▓███▄░╫╬╚█▀░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░▌╚╫████╩░█░░░░░╟▒█░░╙╫╪▀░░╫╬▐▒░░░░░░░░░░░▄░░░▄░░░█▒░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░║▌╬╬╬╠▌░░╟▒░░░░░░██░░░░░░░░╫╬░░░█░░░░░░░░╟╩▌░▐█▌░╟▒█░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░▌╬╬╬╠▌░░█░░░░░░░╙█▄▄░░░░░░╫╬╠▄▀░░░░░░░░]▌░█░█░█░█░╟▌░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░█╬╬╬╟▒░▐▌░░░░▄▄▄░░░╟░░░░░░╫░█░░░░░░░░░░█░░╟█▒░░█░░░█░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░█▒╬╬╟▒░█░░░█▒░╟╬█▄│█░░░░░░╫█░░░░░░░░░░╟░░░░█░░░░░░░╚▌░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░╟▒╬╬╟▒░░╙╙╙░░░╟█╣▌││░░░░░░╫▓░░░░░░░░░▐▌░░░░░░░░░░░░░█░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░█╬╬╟▒░░░░░░░░░█╣▒░░░░░░░░╫╬█░░░░░░░░╟▒░░░░░░]█░▐█░░╚▌░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░╟▌╬╟▒░░░░░░░╓▄██▀█░░░░░░░╟╬╣▒░░░░░░░░█░░░░░░█╣▄██░░░╟░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░█▒╟▒░░░░░░░█▀▀╗▄▄█░░░░░░╟╬╬█░░░░░░░░╠▌░░░░█╠╬╬╬▌░░░▄▌░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░█╬╚█░░░░░░╙▀▀▄█░╙░░░░░░╟╬╬╬▌░░░░░░╓█░░░▄█╬╬╬╬██▀▀░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░╙▌╬░█▒░░░░░░░╚▌░░░░░░░░╟╬╬╬╣▒░░░░▄▀░░▄█╬╬╬█▀▀░░░░▒░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░╟▒╬╬╚▄░░░░░▄▄█░░░░░░░░╟╬╬╬╬█░░░█░░█╬╬██▀░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░╟▒╬╬░█░░░█░░░░░░░░░░░╟╬╬╬╬╬▌░█▄██▀╠╩░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░╟▒╬╬▒▀▒░╟▄▄▄████▓██╠╬╬╬╬╬╬███░░░█░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░╟▒╬╬╬╚█░░░░░░░░╙▀╬╬╬╬█▀▀╟▀█▌╬╟▀░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░╟▒╬╬╬░█▒░░░░░░░▄▄█▀│░░▓▀░╚█║▒░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░╙█╬╬╬╬╠▄░░▄█▀╙░░╚▒░░█▒░░░╟█░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░╙█▒╬░▄╣▀╙░░░░░░░▌░█░░░░░░█░░▒▄▄▄▄▄░░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░▀▀░░░░░░░░░░░╟▒█░░░░░░░│░░░░░█▄╟▌░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█▀░░░░░░░░░░░░░░│▀█▌░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█▒░░░░░░░░░░░░░░░░░░█░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█▒░░░░░░░░░░░░░░░░░░░╫░░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█░░░░░░░░░░░░░░░░░░░░░╟▒░░░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░████▓▒░░░░░░░░░░░░░░░░░▄███▄░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░╟╬█╟▓█▓░░░░░░░░░░░░░░░░░█▌█▀█░░░░░░░░░░░░░░░░░░
    // ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░╙▒╙▀░▀░░░░░░░░░░░░░░░░░╙░│░░░░░░░░░░░░░░░░░░░░
    //                  Receive without pride, let go without attachment. 
    //                                            – Marcus Aurelius
    //                                              Meditations, VII, 33
    function let_go_without_attachment(uint256 tokenId) public {
        _burn(tokenId, true);
    }

    

    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓████████╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬████▀│▄▓███╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓█▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███▀│▄████▀██░╙▀╣╬╬╬╬╬╬╬╬╬╬▓▀╙▐█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███╙░▄███▄▄▄▒██▒░░░░╙▀▓╬╬▓╝▀└   █╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██│░]███▀░░░░╚███▒░░░░▄▓██▄'    ▐█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██│░▄██░╠╠╠╠╠╠╠██▌╙█▄▓╬╬╬╬╬╬╬▓▄  █╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██│░▐██▒▄▓▀▀▀#╠╠███▀│██╬╬╬╬╬╬╬╬╬▓▓█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██░░░██░░░▄▄▄▄▄░╠██▌░░░╟█╬╬╬╬╬╬╬╬╬█╙█▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╟█▌░░▓█▓██████▀▀█████░░░░██╬╬╬╬╬╬╬╫▌░░│▀█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██░░░████▄▄███▓▓▓████░░░░░█▒╬╬╬╬╬╬█░░░░░│▀█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣██░░░██▒░╚╚▀▀▀▀╚░╠╟██░░░░░╟█╬╬╬╬╬█▒╚╚╚╟▌░░│▀█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╫▌▌░░░██▒╠╠╠╠╠╠╠╠╠╠╟██▒░░░░░█╬╬╬╬╬█▄▄▄▄▄█░░░░│▀█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▓▌░░░██╠▒▒╠╠░▄▄▄░╠╟██▒░░░░░╫█╬╬╬██╬╬██░█░░░░░░│█▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▒▌░░░██╚▀▀▀╠▒╚╚░░▒╠██▌░░░░░╟█╬╬╣█╟▌░░▄▓▀░░░░░░░░╙█╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▌▌░░░█████████████████░░░░░║█╬╬█▒╠█░░╟▒░█╚▌░█╬█▄▄██╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▌█░░░████▀▀▀▀▀▀▀╙╙╠█▀█░░░░░▐█╬╣█╠╠╟▌░░╙╙░░█╣▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▌╫░░░╟█         .▓▀│░█░░░░░]█╬█░╠╠╠█░░░░░░█╫╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▌╚▌░░░▀▀██'    ▄█│░░░█▒░░░░▐█╫▌╠╠╠╠╟▌░░░▓▀██▀█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣▒▄▄█░▄███░█'  .▓▀▄╪▀╪░╫▌░░░░╟██▒╠╠╠╠╠█░░╫█#▀▀▓█▒╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╠╬╬╬╬╬╬█╬█╙╙' .█│░▄██▓▄╟▌░░░░╫█▌╠╠╠╠╠╠╫▌░░╫▄▄▄█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█╫⌐   .█░░╙█╫███░█░░░░██╠╠╠╠╠╠╠╠█░░░░███▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬███▌    █▒░░░│╙╙│░░█░░░]█▒╠╠╠╠╠╠╠╠█▌░░░░░╫█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓.   ▐▌░░░░░░░░;▄█▒░░╫█╠╠╠╠╠╠╠╠╠╠█░░░░½█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█╙.  │█░░░░░░░░░╙╬█▒░░█▓▓▌╠╠╠╠╠╠╠╠█▌░░░█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▌    j▌░░░░░░░░░░░▐╬███▓▓▒╠╠╠╠╠╠╠▄█▒░░██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▌    ▐▌░░░░░░░░░░░▐╬█▒╠╠╠╠╠╠╠╠╠╠█▀░░░██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█    j▌░░░░░░░░]▓▀▓█▀▌╠╠╠╠╠╠╠╬█▀░░░╓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█,  '█░░░░░░░░█#▀▀▀▄█╠╠╠╠╠▒█▀░░░░▓██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▓▄╟▌░░░░░░░╟▄▄▄▄▓░╠╠╠▄█▀░░░░▄█▒██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣██▓▓▄▄▄▄░░░╙╫▒╠▒▓█▒░░░░▓█╬╬╫█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█╙█▄░░│╙╠█▀▀▓▓█▀░░░░▄█╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█░░╙▀▓▄░░▀▀▀╙░░▄▄██╬╬╬╬╬╬╬╬█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▒░░░░│█╬▀▀▀▀╬█╬╬╬╬╬╬╬╬╬╬╬╟█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▒░░░░░█╠╠╠╠╠╠▀█▒╬╬╬╬╬╬╬╬╬╫█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█░░░░░░█╠╠╠╠╠╠▓█╬╬╬╬╬╬╬╬╬╬╫█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█░░░░│▄█╠╠╠╠╠╠█╬╬╬╬╬╬╬╬╬╬╬╫▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▒░░░▓█░╠╠╠╠╠╠╠╫▒╬╬╬╬╬╬╬╬╬╬╫█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█░░░░░██▒╠╠╠╠╠╠╟█╬╬╬╬╬╬╬╬╬╬╫█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█░░░░░░░██▒╠╠╠╠╠╟█╬╬╬╬╬╬╬╬╬╬╣█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    // ╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▌░░░░░░░░███▒╠╠╠╠█╬╬╬╬╬╬╬╬╬╬╬██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
    //            I search after truth, by which man never yet was harmed.
    //                                        - Marcus Aurelius
    //                                          Meditations, VI, 21
    //
    function search_after_truth(bytes calldata signature, MintKey calldata key) public view returns (bool) {
    bytes32 digest = _hashTypedDataV4(
        keccak256(
            abi.encode(
                MINTKEY_TYPE_HASH,
                key.wallet,
                key.free,
                key.allowed,
                key.paid,
                key.price
            )
        )
      );

      return ECDSA.recover(digest, signature) == _signer;
    }


    // ''                  ,                                ▄
    // ''                 ▓▌                                ╙█
    //                   █╬▌                                 ██
    //                  █╝╬█                   ╓             █╬▌
    //                  ▀  ╙µ                ,█╙█▄▄█▓█▀      █╜╣µ
    //                 ║    ╟               ▓▀░░╟▌,         ╫   █
    //                 ╫     ▀            ▄▀│░░░░█╬▓████▌  ,⌐   ╞
    //                 ╟      ▀         ╓█│░░]░░▄░█ ▀▄▀   ,▀    ▐
    //                  █      ╙▄     ,█│░░w╬╠█▒▄░╟█▀    ▄      ║
    //                  ╙        ▀▄  ▓▀░░░░╪╪╪█╪▀▀░█▌  ╓▀       ▌
    //                   ▀µ        ▓█▓▓▓▓▓▓▓▓▓█░░░░░█#^        █
    //                    ╙▄     ╓█╬╬╬█▀▀▀▀█▓╬█▒░░░░╚█       ,▀
    //                      ▀▄ ,█╬╬╬█▓▄▄▄▄▄░╟█╣▌░░░░░█µ    ,▀
    //                       ,██╬╬╬╬╬╬▌╙▀,█╬╬╬╬█░░░░░░█ ╓M^
    //                      ▄█╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓▌▄▄░░╔██▓╚█
    //                    ▄█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█▄▄▄▄▄▄▄▄▄█▌
    //                  ╓█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█╬╬╣▌
    //                 ▓█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█▓▓█
    // ┐                █▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█▓▓▌
    // │'                ╙█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╣█▓█
    // ░░                 ╙█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██▌
    // ░░┐                  █╬╬╬╬╬╬╬╬╬╬╬██▀████,,,,╓▄▄▄▄▄▄╗╗╗ÆÆ#▓▓▓▓▓▓▓▓█
    // ░░░┐                  █╬╬╬╬╬╬╬╬╬╬╬╬██╬█╬╬░░▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█
    // ░░░░.                  █▓╬╬╬╬╬╬╬╬╬╬╬╣█▒╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╬▌
    // ░░░░░┌                 █╫█╬╬╬╬╬╬╬╬╬╬▓█╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠╠█
    // ░░░░░░                 █░╙█╬╬╬╬╬╬╬╬█▒╠▒▒▒▒▒▒▄▄▄▄▄▄▓▓▓▓▓▓▓▓▓▓▓▓▓▓███⌐
    // ▒░░░░░░░               █░░╙█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬█▀▀
    // ▒▒░░░░░░░┌             █░░░╙█╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓█▀╙
    // ▒▒▒▒░░░░░░..           █░░░░░█▓╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬▓█▀`
    // ╠╠▒▒▒░░░░░░░.          █░░░░░░██╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬██▀
    // ╠╠╠▒▒▒░░░░░░░.         █░░░░░░╫██╬╬╬╬╬╬╬╬╬╬▓██▀
    // ╬╠╠╠▒▒▒░░░░░░░┌        █░░░░░░█▒╬█╬╬╬╬╬▓██▀░╠█
    // ╬╬╠╠▒▒▒░░░░░░░░.       █░░░░░░█▒╠╬███▀╬░╠╠╠╠╠█
    // ╬╬╬╠╠▒▒▒░░░░░░░░░.     █░░░░░░█╠╠╠╠░╠╠╠╠╠╠╠╠╠█
    // ╬╬╬╬╠╠▒▒▒▒░░░░░░░░┐    █░░░░░░█╠╠╠╠╠╠╠╠╠╠╠╠╠╠█
    // ╬╬╬╬╠╠╠▒▒▒▒░░░░░░░░░.  █░░░░░░█▒▄╠╠▒╠▄▄╠╠╠╠╠╠█
    // ╬╬╬╬╬╬╠╠▒▒▒▒░░░░░░░░░┌:█░░░░░░██╟██╟█▒█╬╠╠╠╠╠╫
    // ╬╬╬╬╬╬╠╠╠▒▒▒▒░░░░░░░░░j█░░░░░░││░│░░░░█╠╠╠╠╠╠╫▌
    // ╬╬╬╬╬╬╠╠╠╠▒▒▒▒░░░░░░░░░█░░░░░░░░░░░░░░█╬╠╠╠╠╠╫▌
    // ╬╬╬╬╬╬╬╠╠╠▒▒▒▒▒░░░░░░░]█░░░░░░░░░░░░░░█▒╠╠╠╠╠╟▌
    //
    //          Wealth consists not in having great possessions,
    //                                   but in having few wants.
    //                                         -Epicletus
    //
    function withdraw() public payable {
      require(payable(_TEAM).send((address(this).balance / 10) * 4));
      require(payable(_ARTIST).send(address(this).balance));
    }



    // ░ ╙░░░░░░░░░░░░░░░^░░░░⌐  ▄ ░░░"█▄    ░▓░░░▌▀  « φ░░]µ░░Γ.░░░░░░░";░░░░░░░╙,≤╙
    // ░│░,"░░░░░░░░░░░░▄░⌐░░░░⌐\╬▌▀µ░░╙█▀▄ ]░╟█░⌐╟ ╟φ φ░░░'█µ ¡░░░░░Γ`;░░░░░░╙,φ"
    // ⁿ░░░░,`░░░░░░░░░░╙█▓▄░░░░⌐╙█  ▀µ░ ▌│▓;░░█▒ j⌐ █▓▄░░░░██φ░░░░Γ,░░░░░░╙,∩`    ,φ░░
    // ░≥,"░░░» ╚░░░░░░░░╙▓╙▀▄░░░∩╚█  ╙▄Γ└▌░█░░╟▌ ]⌐ █╣╬█µ░⌐█╟▒░█▌,░░░░░Γ."   ,≤░░░░░░░
    // ░░░░░,"░░░ ╙░░░░░░░░╙▄╙▌░░░∩█▌  ╙▌ ▓░╟▒░▐▌ ╫ ▐▓╣╣╬█;░█░▌½▌╙▌░░╚▌  ,«φ░░░░░░░░░░░
    // ░░░░░░░╓▄"░░,"φ░░░░░░╙▌│▓µ░░╟█   ╟ ╟░▐▒Γ▓ ╔  █╬╣╣╣█░▐▒░█▓  ╟╙ ▐█░░░░░░░░░░░Γ"  '
    // ░░░░░░░│╙█▓╗▄░.`φ░░░░░╫░░█░░░█    ▌█░▐▒▐█╓▀,█╬╣╣╣╬▌]▌░░█   ▐▒░█╬▌j▌░░░Γ"   '
    // ░░░░░░░░░│╙█╬╬▓▓▄ ╚░░░╫░░╟▒░▐█▌   ╟▌░▓]▌█ ▄▓╣╣╣╣╬█▄▀░░█    ▐░j█╣█▓╟   '      ,;≤
    // ░░░░░░░░░░░ ╙▓╬╣╬▓▓ ╙░█░░▐▒ █╣╣▄   █▒▌█]▌▐╬╣╣╣╣╬█▀│░░█     ▌░█╬╬█▌▐⌐   ,;≤░░░░░░
    // `╙╚φ░░░░░░░░░│▀▓╣╣╬▓▄ █░░╟▒╫╬╬█╬▌   ▀█▒░▌╫╣╣╣╣╬█│░▄Å▌▄    ▌ ▓╬╬█▌░╫░░░▄▌░░░░░░░░
    //       ╙▀▀█▄░░░░╙█╬╣╣╬█╬▌░╫▒█╣╣╬██╬╬████▓██▓▓▓╬█Å▀ ▄▀▌   Æ▀▄▓╬██│░╓▌░░▄█▌░░░░░░░░
    // ≥»-,      ╙█▌╙╙δ╙▀█╬╣╣╬██╙█╬╣╬▓╝▀     ╙██▌░░░ ╙▀W█░╫  ▓█▓█▓█▀│░░▄▀░]▓╬█░░░░░░░░░
    // ░░░░░░░░░░░≥╠▌»,, ╙██╬╣╬█╬▓█▓▀         ╙█▌░░░░░░░│╙█▄█▀▀  █│░░╓▓▒▄▓╬╬█Γ╙╙"`
    // ⁿⁿⁿⁿⁿΓΓ=ΓΓΓΓ░╟█░░░░▌ ▀▓▀╝▀███▄          ╙█░▀╙╙╙▀▀▄░░ ▀▄  █│Q▄▓█╬╬╬╬▓█⌐
    // ░░░░░░░░░φφφφ≥█▌=ⁿ"▌  ╙▒¡▓╬╬╬╬▌          █▄▓▓╬╬▓▓▄░░░░╙▌╟███▓███▓█╩╙▌
    // ╙╙"`▄         █╬▄.-▌   █▓╬╬╬╬╬╬▌         █┘╙╠▀██▓█▌░░░░ █▀ ,▄▄,    █░╠╠╠╠╠╠╠╠╠╠╠
    // ...;██,░░░»≥≥░█╬╬▓▄█   ╟█╬╬╣▀█ ╟▄        ╟▒░'▀╫æ▀░░░░░░░ █╟╝▀▀╙▀ ,▓▒╠╠╠╠╠╠╠╬▌╠╠╠
    // ░░░░░╙█▄ ░░░░░^█╬╬╬█▌  ▐▓╣╬█▄▒█░█        ▐▌░░░░░░░░░░░░░░▓▄▄▓█▓▀▀▀▀▀▀╪▄▄╫▀▀█╙╩╠╠
    // ░░░░░░╙█╬▓▓▄░`  ▀▓▓╬╬╬▓▓█▓█▀ ░ ░╫▌  ╓█▀▌  █░░░░░░░░░░░░░░╟╬╬╬╬█╙▀▀╪▄▄▄▄æ#▀└░░░░░
    // ░░░░░░╚╙█╬╣╬╬╬▓▓▓▓▓╣╣▓███│░░░░░░ ▀▀▀╙░░╙╙╙└░░░░░░░░░░░░░░╫╬╣╣╣╬█▄ƒ░░░░░░░░░░░░░░
    // ░░╚"     ▀▓╬╣╣╣╣╬████╬╬▓█▌░░░░░░░░░░░░░░░░░, ░░░░░░░░░░░░█╣╣╣╣╣╣╬╬▓▓▓▓▓░░░░░░░░░
    //        ,φ░│╙▀▓╬╣█╬╬╣╣╣╣╬██▌░░░░░░░░░░▄▀▀▄▄▀ ╙▄░░░░░░░░░│▓▀█╙▀▀█▓▓▓╝▀▀░≥», `"░░░░
    //    .»░░░░╚`,»╠│▓████████▀ █▀▄▄▄▄▄▄▄;█ª▀▀▀█▀▀▀▀░░░░░░░░╓▀   ╙▌   ¼ `╙╠░░░░░░░≥»,
    // ,φ░░░░╚` »▒▄▓▓╬╬╬╬▓╝▀▄▀   ▓███▓╬╬╬╬╬╬▓▄▄▄█░░░░░░░░░░╓▓      ██   ▀     "╩░░░░░░░
    // ░░░╚` ,φ░▄▓╬╬▓╝▀╙│QÅ▀    ▓Ü██╣╬╬█▓╬╬╬╬╬╬╬█▓█▄░░░░▄Å▀ ███▌   ██▌   ▓░»      "╚░░░
    // ╙` ,ε╠░░▐▓╬▓▌▄▄#▀╙     ╓█▀ ╟█╣╣╣╣╬╬█▀█╝▓███▓█▓▓▓█▀  ▐█╣█╬█▌ █╬█▌   █░░░≥,      `
    //  »╠░░░░░██╙▀W▄      ,▄▀   ╓██╣╣╣╬╬▓█ ╙▓     ██╬█    ██╣╬█╙█▓▄█╬╣▓▄  █ ░░░░φ»
    // ░░░░Γ░░░╫░░;░░│╙`^▐▀     #│█╬▓▓█▀│▓▀  `   ▓██▌╟▌   ██╣╣╣╣▒█╬╬▓╬█▌└▀▄ ▀▄░░░░░░░≥,
    // ░░░░░░░░╙;φΓ;≥   ╓     ▄▀;██▀▓▀░░▓▀     ▄█╬██ ╟   █│╟█╬╣╣▒╙█╬╬╬▓█░░ ╙▀▄█⌐░░░░░░░
    // ░░░░░░Γ;φ░░░╙   ]▌   #╙ ▄██.█│░╓█     #█╬╣╣█▌ ╙ ▄▓▒░▐▒█╬╫░φ│█╬╬╬╬█░░░░░░░░░░░░░░
    // ░░░░Γ,φΓ░░≥    φ╫  ▄▀╙▄▓╬█ ▓│░▓▓    ▄▀]█╣╬██   ▓ ╟▒░╟▒░╟╣▒,"░╙▓╬╬╬█░░░░░░░░░░░░░
    // ░░░,φ░░░░╙   .░░╟ ▐▒▓█╬╬█ ░▌░█ ▌   ▐▒░▐█╬██▀▌ ▐▒ ╘▌░█"░░╙█µ░ ╚░│▀╫██░░░░░░░░░░░░
    // ░,φ░░░░≥    ;░░░╚▄▌░ ▀▀▀ ░░█j▌;█   ▌░░░█╣╝█▒█ ▐ ░ ╟▌█ "░░╙▓▄░,"░░░░╙▀Ü░░░≥░░░░░░
    // φ╩░░░░╙    φ░░░░░█▒   ]░░░░╟╣▌░ ▌ ▐▒░░░╙█ █▌ ▌▐▒!≥ ╙█ '^░░░╙█▄░ ╙░░░░░░░░░░≥░░░░
    // ░░░░░    ;░░░░░░░░Γ  ]░░░░░░█▌░░╙▌ ▌░░░ε ▌╙█µ╙▄▌ \, ╙▌ ' ░░░░│░░░^φ░░░░░░░░░░≥░░
    // ░░░╚    φ░░░░░░░░╩   ░░░░░░░░█▄░[¡▀▀░░░░ ╙█╟█µ░∩  ░   █ . ░░░░░░░░ "░░░░░░░░░░░φ
    // ░░╙   ,░░░░░░░░░░   ░░░░░░░░Γ¡▀▄⌐]░░░░░░   ▀╟█░░   φ   ▐█  ░░░░░░░░░ ╚░░░░░░░░░░
    // ░    ;░░░░░░░░░░   ]░░░░░░░░⌐░│ ⌐]░░░░░░    ░█▌░░  !ε  █▓█' ░░░░░░░░░,"░░░░░░░░░
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    //    Whatever anyone does or says, I must be what I am and show my true colors.
    //                                            — Marcus Aurelius
    //                                              Meditations, VII, 15
    //
    function show_true_colors(string memory newBaseURI) public onlyOwner {
      baseURI = newBaseURI;
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    // Override to support royalties via ERC2981
    function supportsInterface(
    bytes4 interfaceId
    ) public view virtual override(IERC721A, ERC721A, ERC2981) returns (bool) {
        // Supports the following `interfaceId`s:
        // - IERC165: 0x01ffc9a7
        // - IERC721: 0x80ac58cd
        // - IERC721Metadata: 0x5b5e139f
        // - IERC2981: 0x2a55205a
        return 
            ERC721A.supportsInterface(interfaceId) ||
            ERC2981.supportsInterface(interfaceId);
    }
}

//
// Congratulations, you made it to the end of the Smart Contract! 
// Go mint a fork and feed someone in New Orleans: https://forkhunger.art
//

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import "IERC721AQueryable.sol";
import "ERC721A.sol";

/**
 * @title ERC721AQueryable.
 *
 * @dev ERC721A subclass with convenience query functions.
 */
abstract contract ERC721AQueryable is ERC721A, IERC721AQueryable {
    /**
     * @dev Returns the `TokenOwnership` struct at `tokenId` without reverting.
     *
     * If the `tokenId` is out of bounds:
     *
     * - `addr = address(0)`
     * - `startTimestamp = 0`
     * - `burned = false`
     * - `extraData = 0`
     *
     * If the `tokenId` is burned:
     *
     * - `addr = <Address of owner before token was burned>`
     * - `startTimestamp = <Timestamp when token was burned>`
     * - `burned = true`
     * - `extraData = <Extra data when token was burned>`
     *
     * Otherwise:
     *
     * - `addr = <Address of owner>`
     * - `startTimestamp = <Timestamp of start of ownership>`
     * - `burned = false`
     * - `extraData = <Extra data at start of ownership>`
     */
    function explicitOwnershipOf(uint256 tokenId) public view virtual override returns (TokenOwnership memory) {
        TokenOwnership memory ownership;
        if (tokenId < _startTokenId() || tokenId >= _nextTokenId()) {
            return ownership;
        }
        ownership = _ownershipAt(tokenId);
        if (ownership.burned) {
            return ownership;
        }
        return _ownershipOf(tokenId);
    }

    /**
     * @dev Returns an array of `TokenOwnership` structs at `tokenIds` in order.
     * See {ERC721AQueryable-explicitOwnershipOf}
     */
    function explicitOwnershipsOf(uint256[] calldata tokenIds)
        external
        view
        virtual
        override
        returns (TokenOwnership[] memory)
    {
        unchecked {
            uint256 tokenIdsLength = tokenIds.length;
            TokenOwnership[] memory ownerships = new TokenOwnership[](tokenIdsLength);
            for (uint256 i; i != tokenIdsLength; ++i) {
                ownerships[i] = explicitOwnershipOf(tokenIds[i]);
            }
            return ownerships;
        }
    }

    /**
     * @dev Returns an array of token IDs owned by `owner`,
     * in the range [`start`, `stop`)
     * (i.e. `start <= tokenId < stop`).
     *
     * This function allows for tokens to be queried if the collection
     * grows too big for a single call of {ERC721AQueryable-tokensOfOwner}.
     *
     * Requirements:
     *
     * - `start < stop`
     */
    function tokensOfOwnerIn(
        address owner,
        uint256 start,
        uint256 stop
    ) external view virtual override returns (uint256[] memory) {
        unchecked {
            if (start >= stop) revert InvalidQueryRange();
            uint256 tokenIdsIdx;
            uint256 stopLimit = _nextTokenId();
            // Set `start = max(start, _startTokenId())`.
            if (start < _startTokenId()) {
                start = _startTokenId();
            }
            // Set `stop = min(stop, stopLimit)`.
            if (stop > stopLimit) {
                stop = stopLimit;
            }
            uint256 tokenIdsMaxLength = balanceOf(owner);
            // Set `tokenIdsMaxLength = min(balanceOf(owner), stop - start)`,
            // to cater for cases where `balanceOf(owner)` is too big.
            if (start < stop) {
                uint256 rangeLength = stop - start;
                if (rangeLength < tokenIdsMaxLength) {
                    tokenIdsMaxLength = rangeLength;
                }
            } else {
                tokenIdsMaxLength = 0;
            }
            uint256[] memory tokenIds = new uint256[](tokenIdsMaxLength);
            if (tokenIdsMaxLength == 0) {
                return tokenIds;
            }
            // We need to call `explicitOwnershipOf(start)`,
            // because the slot at `start` may not be initialized.
            TokenOwnership memory ownership = explicitOwnershipOf(start);
            address currOwnershipAddr;
            // If the starting slot exists (i.e. not burned), initialize `currOwnershipAddr`.
            // `ownership.address` will not be zero, as `start` is clamped to the valid token ID range.
            if (!ownership.burned) {
                currOwnershipAddr = ownership.addr;
            }
            for (uint256 i = start; i != stop && tokenIdsIdx != tokenIdsMaxLength; ++i) {
                ownership = _ownershipAt(i);
                if (ownership.burned) {
                    continue;
                }
                if (ownership.addr != address(0)) {
                    currOwnershipAddr = ownership.addr;
                }
                if (currOwnershipAddr == owner) {
                    tokenIds[tokenIdsIdx++] = i;
                }
            }
            // Downsize the array to fit.
            assembly {
                mstore(tokenIds, tokenIdsIdx)
            }
            return tokenIds;
        }
    }

    /**
     * @dev Returns an array of token IDs owned by `owner`.
     *
     * This function scans the ownership mapping and is O(`totalSupply`) in complexity.
     * It is meant to be called off-chain.
     *
     * See {ERC721AQueryable-tokensOfOwnerIn} for splitting the scan into
     * multiple smaller scans if the collection is large enough to cause
     * an out-of-gas error (10K collections should be fine).
     */
    function tokensOfOwner(address owner) external view virtual override returns (uint256[] memory) {
        unchecked {
            uint256 tokenIdsIdx;
            address currOwnershipAddr;
            uint256 tokenIdsLength = balanceOf(owner);
            uint256[] memory tokenIds = new uint256[](tokenIdsLength);
            TokenOwnership memory ownership;
            for (uint256 i = _startTokenId(); tokenIdsIdx != tokenIdsLength; ++i) {
                ownership = _ownershipAt(i);
                if (ownership.burned) {
                    continue;
                }
                if (ownership.addr != address(0)) {
                    currOwnershipAddr = ownership.addr;
                }
                if (currOwnershipAddr == owner) {
                    tokenIds[tokenIdsIdx++] = i;
                }
            }
            return tokenIds;
        }
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import "IERC721A.sol";

/**
 * @dev Interface of ERC721AQueryable.
 */
interface IERC721AQueryable is IERC721A {
    /**
     * Invalid query range (`start` >= `stop`).
     */
    error InvalidQueryRange();

    /**
     * @dev Returns the `TokenOwnership` struct at `tokenId` without reverting.
     *
     * If the `tokenId` is out of bounds:
     *
     * - `addr = address(0)`
     * - `startTimestamp = 0`
     * - `burned = false`
     * - `extraData = 0`
     *
     * If the `tokenId` is burned:
     *
     * - `addr = <Address of owner before token was burned>`
     * - `startTimestamp = <Timestamp when token was burned>`
     * - `burned = true`
     * - `extraData = <Extra data when token was burned>`
     *
     * Otherwise:
     *
     * - `addr = <Address of owner>`
     * - `startTimestamp = <Timestamp of start of ownership>`
     * - `burned = false`
     * - `extraData = <Extra data at start of ownership>`
     */
    function explicitOwnershipOf(uint256 tokenId) external view returns (TokenOwnership memory);

    /**
     * @dev Returns an array of `TokenOwnership` structs at `tokenIds` in order.
     * See {ERC721AQueryable-explicitOwnershipOf}
     */
    function explicitOwnershipsOf(uint256[] memory tokenIds) external view returns (TokenOwnership[] memory);

    /**
     * @dev Returns an array of token IDs owned by `owner`,
     * in the range [`start`, `stop`)
     * (i.e. `start <= tokenId < stop`).
     *
     * This function allows for tokens to be queried if the collection
     * grows too big for a single call of {ERC721AQueryable-tokensOfOwner}.
     *
     * Requirements:
     *
     * - `start < stop`
     */
    function tokensOfOwnerIn(
        address owner,
        uint256 start,
        uint256 stop
    ) external view returns (uint256[] memory);

    /**
     * @dev Returns an array of token IDs owned by `owner`.
     *
     * This function scans the ownership mapping and is O(`totalSupply`) in complexity.
     * It is meant to be called off-chain.
     *
     * See {ERC721AQueryable-tokensOfOwnerIn} for splitting the scan into
     * multiple smaller scans if the collection is large enough to cause
     * an out-of-gas error (10K collections should be fine).
     */
    function tokensOfOwner(address owner) external view returns (uint256[] memory);
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

/**
 * @dev Interface of ERC721A.
 */
interface IERC721A {
    /**
     * The caller must own the token or be an approved operator.
     */
    error ApprovalCallerNotOwnerNorApproved();

    /**
     * The token does not exist.
     */
    error ApprovalQueryForNonexistentToken();

    /**
     * The caller cannot approve to their own address.
     */
    error ApproveToCaller();

    /**
     * Cannot query the balance for the zero address.
     */
    error BalanceQueryForZeroAddress();

    /**
     * Cannot mint to the zero address.
     */
    error MintToZeroAddress();

    /**
     * The quantity of tokens minted must be more than zero.
     */
    error MintZeroQuantity();

    /**
     * The token does not exist.
     */
    error OwnerQueryForNonexistentToken();

    /**
     * The caller must own the token or be an approved operator.
     */
    error TransferCallerNotOwnerNorApproved();

    /**
     * The token must be owned by `from`.
     */
    error TransferFromIncorrectOwner();

    /**
     * Cannot safely transfer to a contract that does not implement the
     * ERC721Receiver interface.
     */
    error TransferToNonERC721ReceiverImplementer();

    /**
     * Cannot transfer to the zero address.
     */
    error TransferToZeroAddress();

    /**
     * The token does not exist.
     */
    error URIQueryForNonexistentToken();

    /**
     * The `quantity` minted with ERC2309 exceeds the safety limit.
     */
    error MintERC2309QuantityExceedsLimit();

    /**
     * The `extraData` cannot be set on an unintialized ownership slot.
     */
    error OwnershipNotInitializedForExtraData();

    // =============================================================
    //                            STRUCTS
    // =============================================================

    struct TokenOwnership {
        // The address of the owner.
        address addr;
        // Stores the start time of ownership with minimal overhead for tokenomics.
        uint64 startTimestamp;
        // Whether the token has been burned.
        bool burned;
        // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
        uint24 extraData;
    }

    // =============================================================
    //                         TOKEN COUNTERS
    // =============================================================

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count.
     * To get the total number of tokens minted, please see {_totalMinted}.
     */
    function totalSupply() external view returns (uint256);

    // =============================================================
    //                            IERC165
    // =============================================================

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);

    // =============================================================
    //                            IERC721
    // =============================================================

    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables
     * (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in `owner`'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`,
     * checking first that contract recipients are aware of the ERC721 protocol
     * to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be have been allowed to move
     * this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external;

    /**
     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom}
     * whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the
     * zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom}
     * for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool _approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);

    // =============================================================
    //                        IERC721Metadata
    // =============================================================

    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);

    // =============================================================
    //                           IERC2309
    // =============================================================

    /**
     * @dev Emitted when tokens in `fromTokenId` to `toTokenId`
     * (inclusive) is transferred from `from` to `to`, as defined in the
     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
     *
     * See {_mintERC2309} for more details.
     */
    event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.2
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import "IERC721A.sol";

/**
 * @dev Interface of ERC721 token receiver.
 */
interface ERC721A__IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

/**
 * @title ERC721A
 *
 * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)
 * Non-Fungible Token Standard, including the Metadata extension.
 * Optimized for lower gas during batch mints.
 *
 * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)
 * starting from `_startTokenId()`.
 *
 * Assumptions:
 *
 * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721A is IERC721A {
    // Reference type for token approval.
    struct TokenApprovalRef {
        address value;
    }

    // =============================================================
    //                           CONSTANTS
    // =============================================================

    // Mask of an entry in packed address data.
    uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

    // The bit position of `numberMinted` in packed address data.
    uint256 private constant _BITPOS_NUMBER_MINTED = 64;

    // The bit position of `numberBurned` in packed address data.
    uint256 private constant _BITPOS_NUMBER_BURNED = 128;

    // The bit position of `aux` in packed address data.
    uint256 private constant _BITPOS_AUX = 192;

    // Mask of all 256 bits in packed address data except the 64 bits for `aux`.
    uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;

    // The bit position of `startTimestamp` in packed ownership.
    uint256 private constant _BITPOS_START_TIMESTAMP = 160;

    // The bit mask of the `burned` bit in packed ownership.
    uint256 private constant _BITMASK_BURNED = 1 << 224;

    // The bit position of the `nextInitialized` bit in packed ownership.
    uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;

    // The bit mask of the `nextInitialized` bit in packed ownership.
    uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;

    // The bit position of `extraData` in packed ownership.
    uint256 private constant _BITPOS_EXTRA_DATA = 232;

    // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.
    uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;

    // The mask of the lower 160 bits for addresses.
    uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;

    // The maximum `quantity` that can be minted with {_mintERC2309}.
    // This limit is to prevent overflows on the address data entries.
    // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}
    // is required to cause an overflow, which is unrealistic.
    uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;

    // The `Transfer` event signature is given by:
    // `keccak256(bytes("Transfer(address,address,uint256)"))`.
    bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
        0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;

    // =============================================================
    //                            STORAGE
    // =============================================================

    // The next token ID to be minted.
    uint256 private _currentIndex;

    // The number of tokens burned.
    uint256 private _burnCounter;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to ownership details
    // An empty struct value does not necessarily mean the token is unowned.
    // See {_packedOwnershipOf} implementation for details.
    //
    // Bits Layout:
    // - [0..159]   `addr`
    // - [160..223] `startTimestamp`
    // - [224]      `burned`
    // - [225]      `nextInitialized`
    // - [232..255] `extraData`
    mapping(uint256 => uint256) private _packedOwnerships;

    // Mapping owner address to address data.
    //
    // Bits Layout:
    // - [0..63]    `balance`
    // - [64..127]  `numberMinted`
    // - [128..191] `numberBurned`
    // - [192..255] `aux`
    mapping(address => uint256) private _packedAddressData;

    // Mapping from token ID to approved address.
    mapping(uint256 => TokenApprovalRef) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    // =============================================================
    //                          CONSTRUCTOR
    // =============================================================

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _currentIndex = _startTokenId();
    }

    // =============================================================
    //                   TOKEN COUNTING OPERATIONS
    // =============================================================

    /**
     * @dev Returns the starting token ID.
     * To change the starting token ID, please override this function.
     */
    function _startTokenId() internal view virtual returns (uint256) {
        return 0;
    }

    /**
     * @dev Returns the next token ID to be minted.
     */
    function _nextTokenId() internal view virtual returns (uint256) {
        return _currentIndex;
    }

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count.
     * To get the total number of tokens minted, please see {_totalMinted}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        // Counter underflow is impossible as _burnCounter cannot be incremented
        // more than `_currentIndex - _startTokenId()` times.
        unchecked {
            return _currentIndex - _burnCounter - _startTokenId();
        }
    }

    /**
     * @dev Returns the total amount of tokens minted in the contract.
     */
    function _totalMinted() internal view virtual returns (uint256) {
        // Counter underflow is impossible as `_currentIndex` does not decrement,
        // and it is initialized to `_startTokenId()`.
        unchecked {
            return _currentIndex - _startTokenId();
        }
    }

    /**
     * @dev Returns the total number of tokens burned.
     */
    function _totalBurned() internal view virtual returns (uint256) {
        return _burnCounter;
    }

    // =============================================================
    //                    ADDRESS DATA OPERATIONS
    // =============================================================

    /**
     * @dev Returns the number of tokens in `owner`'s account.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens minted by `owner`.
     */
    function _numberMinted(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens burned by or on behalf of `owner`.
     */
    function _numberBurned(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
     */
    function _getAux(address owner) internal view returns (uint64) {
        return uint64(_packedAddressData[owner] >> _BITPOS_AUX);
    }

    /**
     * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
     * If there are multiple variables, please pack them into a uint64.
     */
    function _setAux(address owner, uint64 aux) internal virtual {
        uint256 packed = _packedAddressData[owner];
        uint256 auxCasted;
        // Cast `aux` with assembly to avoid redundant masking.
        assembly {
            auxCasted := aux
        }
        packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX);
        _packedAddressData[owner] = packed;
    }

    // =============================================================
    //                            IERC165
    // =============================================================

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        // The interface IDs are constants representing the first 4 bytes
        // of the XOR of all function selectors in the interface.
        // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)
        // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)
        return
            interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
            interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
            interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
    }

    // =============================================================
    //                        IERC721Metadata
    // =============================================================

    /**
     * @dev Returns the token collection name.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

        string memory baseURI = _baseURI();
        return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : '';
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, it can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return '';
    }

    // =============================================================
    //                     OWNERSHIPS OPERATIONS
    // =============================================================

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        return address(uint160(_packedOwnershipOf(tokenId)));
    }

    /**
     * @dev Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around over time.
     */
    function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnershipOf(tokenId));
    }

    /**
     * @dev Returns the unpacked `TokenOwnership` struct at `index`.
     */
    function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnerships[index]);
    }

    /**
     * @dev Initializes the ownership slot minted at `index` for efficiency purposes.
     */
    function _initializeOwnershipAt(uint256 index) internal virtual {
        if (_packedOwnerships[index] == 0) {
            _packedOwnerships[index] = _packedOwnershipOf(index);
        }
    }

    /**
     * Returns the packed ownership data of `tokenId`.
     */
    function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
        uint256 curr = tokenId;

        unchecked {
            if (_startTokenId() <= curr)
                if (curr < _currentIndex) {
                    uint256 packed = _packedOwnerships[curr];
                    // If not burned.
                    if (packed & _BITMASK_BURNED == 0) {
                        // Invariant:
                        // There will always be an initialized ownership slot
                        // (i.e. `ownership.addr != address(0) && ownership.burned == false`)
                        // before an unintialized ownership slot
                        // (i.e. `ownership.addr == address(0) && ownership.burned == false`)
                        // Hence, `curr` will not underflow.
                        //
                        // We can directly compare the packed value.
                        // If the address is zero, packed will be zero.
                        while (packed == 0) {
                            packed = _packedOwnerships[--curr];
                        }
                        return packed;
                    }
                }
        }
        revert OwnerQueryForNonexistentToken();
    }

    /**
     * @dev Returns the unpacked `TokenOwnership` struct from `packed`.
     */
    function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
        ownership.addr = address(uint160(packed));
        ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);
        ownership.burned = packed & _BITMASK_BURNED != 0;
        ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);
    }

    /**
     * @dev Packs ownership data into a single uint256.
     */
    function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
        assembly {
            // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
            owner := and(owner, _BITMASK_ADDRESS)
            // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.
            result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags))
        }
    }

    /**
     * @dev Returns the `nextInitialized` flag set if `quantity` equals 1.
     */
    function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {
        // For branchless setting of the `nextInitialized` flag.
        assembly {
            // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.
            result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
        }
    }

    // =============================================================
    //                      APPROVAL OPERATIONS
    // =============================================================

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the
     * zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ownerOf(tokenId);

        if (_msgSenderERC721A() != owner)
            if (!isApprovedForAll(owner, _msgSenderERC721A())) {
                revert ApprovalCallerNotOwnerNorApproved();
            }

        _tokenApprovals[tokenId].value = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId].value;
    }

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom}
     * for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        if (operator == _msgSenderERC721A()) revert ApproveToCaller();

        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
    }

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted. See {_mint}.
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return
            _startTokenId() <= tokenId &&
            tokenId < _currentIndex && // If within bounds,
            _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned.
    }

    /**
     * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.
     */
    function _isSenderApprovedOrOwner(
        address approvedAddress,
        address owner,
        address msgSender
    ) private pure returns (bool result) {
        assembly {
            // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
            owner := and(owner, _BITMASK_ADDRESS)
            // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
            msgSender := and(msgSender, _BITMASK_ADDRESS)
            // `msgSender == owner || msgSender == approvedAddress`.
            result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))
        }
    }

    /**
     * @dev Returns the storage slot and value for the approved address of `tokenId`.
     */
    function _getApprovedSlotAndAddress(uint256 tokenId)
        private
        view
        returns (uint256 approvedAddressSlot, address approvedAddress)
    {
        TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];
        // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId]`.
        assembly {
            approvedAddressSlot := tokenApproval.slot
            approvedAddress := sload(approvedAddressSlot)
        }
    }

    // =============================================================
    //                      TRANSFER OPERATIONS
    // =============================================================

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

        // The nested ifs save around 20+ gas over a compound boolean condition.
        if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
            if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();

        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner.
        assembly {
            if approvedAddress {
                // This is equivalent to `delete _tokenApprovals[tokenId]`.
                sstore(approvedAddressSlot, 0)
            }
        }

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
        unchecked {
            // We can directly increment and decrement the balances.
            --_packedAddressData[from]; // Updates: `balance -= 1`.
            ++_packedAddressData[to]; // Updates: `balance += 1`.

            // Updates:
            // - `address` to the next owner.
            // - `startTimestamp` to the timestamp of transfering.
            // - `burned` to `false`.
            // - `nextInitialized` to `true`.
            _packedOwnerships[tokenId] = _packOwnershipData(
                to,
                _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked)
            );

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (_packedOwnerships[nextTokenId] == 0) {
                    // If the next slot is within bounds.
                    if (nextTokenId != _currentIndex) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

        emit Transfer(from, to, tokenId);
        _afterTokenTransfers(from, to, tokenId, 1);
    }

    /**
     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        transferFrom(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                revert TransferToNonERC721ReceiverImplementer();
            }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token IDs
     * are about to be transferred. This includes minting.
     * And also called before burning one token.
     *
     * `startTokenId` - the first token ID to be transferred.
     * `quantity` - the amount to be transferred.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _beforeTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Hook that is called after a set of serially-ordered token IDs
     * have been transferred. This includes minting.
     * And also called after one token has been burned.
     *
     * `startTokenId` - the first token ID to be transferred.
     * `quantity` - the amount to be transferred.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
     * transferred to `to`.
     * - When `from` is zero, `tokenId` has been minted for `to`.
     * - When `to` is zero, `tokenId` has been burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
     *
     * `from` - Previous owner of the given token ID.
     * `to` - Target address that will receive the token.
     * `tokenId` - Token ID to be transferred.
     * `_data` - Optional data to send along with the call.
     *
     * Returns whether the call correctly returned the expected magic value.
     */
    function _checkContractOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
            bytes4 retval
        ) {
            return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
        } catch (bytes memory reason) {
            if (reason.length == 0) {
                revert TransferToNonERC721ReceiverImplementer();
            } else {
                assembly {
                    revert(add(32, reason), mload(reason))
                }
            }
        }
    }

    // =============================================================
    //                        MINT OPERATIONS
    // =============================================================

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event for each mint.
     */
    function _mint(address to, uint256 quantity) internal virtual {
        uint256 startTokenId = _currentIndex;
        if (quantity == 0) revert MintZeroQuantity();

        _beforeTokenTransfers(address(0), to, startTokenId, quantity);

        // Overflows are incredibly unrealistic.
        // `balance` and `numberMinted` have a maximum limit of 2**64.
        // `tokenId` has a maximum limit of 2**256.
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            _packedOwnerships[startTokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
            );

            uint256 toMasked;
            uint256 end = startTokenId + quantity;

            // Use assembly to loop and emit the `Transfer` event for gas savings.
            assembly {
                // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
                toMasked := and(to, _BITMASK_ADDRESS)
                // Emit the `Transfer` event.
                log4(
                    0, // Start of data (0, since no data).
                    0, // End of data (0, since no data).
                    _TRANSFER_EVENT_SIGNATURE, // Signature.
                    0, // `address(0)`.
                    toMasked, // `to`.
                    startTokenId // `tokenId`.
                )

                for {
                    let tokenId := add(startTokenId, 1)
                } iszero(eq(tokenId, end)) {
                    tokenId := add(tokenId, 1)
                } {
                    // Emit the `Transfer` event. Similar to above.
                    log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
                }
            }
            if (toMasked == 0) revert MintToZeroAddress();

            _currentIndex = end;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * This function is intended for efficient minting only during contract creation.
     *
     * It emits only one {ConsecutiveTransfer} as defined in
     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
     * instead of a sequence of {Transfer} event(s).
     *
     * Calling this function outside of contract creation WILL make your contract
     * non-compliant with the ERC721 standard.
     * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
     * {ConsecutiveTransfer} event is only permissible during contract creation.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {ConsecutiveTransfer} event.
     */
    function _mintERC2309(address to, uint256 quantity) internal virtual {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();
        if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();

        _beforeTokenTransfers(address(0), to, startTokenId, quantity);

        // Overflows are unrealistic due to the above check for `quantity` to be below the limit.
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            _packedOwnerships[startTokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
            );

            emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to);

            _currentIndex = startTokenId + quantity;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Safely mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
     * - `quantity` must be greater than 0.
     *
     * See {_mint}.
     *
     * Emits a {Transfer} event for each mint.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal virtual {
        _mint(to, quantity);

        unchecked {
            if (to.code.length != 0) {
                uint256 end = _currentIndex;
                uint256 index = end - quantity;
                do {
                    if (!_checkContractOnERC721Received(address(0), to, index++, _data)) {
                        revert TransferToNonERC721ReceiverImplementer();
                    }
                } while (index < end);
                // Reentrancy protection.
                if (_currentIndex != end) revert();
            }
        }
    }

    /**
     * @dev Equivalent to `_safeMint(to, quantity, '')`.
     */
    function _safeMint(address to, uint256 quantity) internal virtual {
        _safeMint(to, quantity, '');
    }

    // =============================================================
    //                        BURN OPERATIONS
    // =============================================================

    /**
     * @dev Equivalent to `_burn(tokenId, false)`.
     */
    function _burn(uint256 tokenId) internal virtual {
        _burn(tokenId, false);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        address from = address(uint160(prevOwnershipPacked));

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);

        if (approvalCheck) {
            // The nested ifs save around 20+ gas over a compound boolean condition.
            if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
                if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
        }

        _beforeTokenTransfers(from, address(0), tokenId, 1);

        // Clear approvals from the previous owner.
        assembly {
            if approvedAddress {
                // This is equivalent to `delete _tokenApprovals[tokenId]`.
                sstore(approvedAddressSlot, 0)
            }
        }

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
        unchecked {
            // Updates:
            // - `balance -= 1`.
            // - `numberBurned += 1`.
            //
            // We can directly decrement the balance, and increment the number burned.
            // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.
            _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;

            // Updates:
            // - `address` to the last owner.
            // - `startTimestamp` to the timestamp of burning.
            // - `burned` to `true`.
            // - `nextInitialized` to `true`.
            _packedOwnerships[tokenId] = _packOwnershipData(
                from,
                (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked)
            );

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (_packedOwnerships[nextTokenId] == 0) {
                    // If the next slot is within bounds.
                    if (nextTokenId != _currentIndex) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        _afterTokenTransfers(from, address(0), tokenId, 1);

        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
        unchecked {
            _burnCounter++;
        }
    }

    // =============================================================
    //                     EXTRA DATA OPERATIONS
    // =============================================================

    /**
     * @dev Directly sets the extra data for the ownership data `index`.
     */
    function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
        uint256 packed = _packedOwnerships[index];
        if (packed == 0) revert OwnershipNotInitializedForExtraData();
        uint256 extraDataCasted;
        // Cast `extraData` with assembly to avoid redundant masking.
        assembly {
            extraDataCasted := extraData
        }
        packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA);
        _packedOwnerships[index] = packed;
    }

    /**
     * @dev Called during each token transfer to set the 24bit `extraData` field.
     * Intended to be overridden by the cosumer contract.
     *
     * `previousExtraData` - the value of `extraData` before transfer.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _extraData(
        address from,
        address to,
        uint24 previousExtraData
    ) internal view virtual returns (uint24) {}

    /**
     * @dev Returns the next extra data for the packed ownership data.
     * The returned result is shifted into position.
     */
    function _nextExtraData(
        address from,
        address to,
        uint256 prevOwnershipPacked
    ) private view returns (uint256) {
        uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);
        return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA;
    }

    // =============================================================
    //                       OTHER OPERATIONS
    // =============================================================

    /**
     * @dev Returns the message sender (defaults to `msg.sender`).
     *
     * If you are writing GSN compatible contracts, you need to override this function.
     */
    function _msgSenderERC721A() internal view virtual returns (address) {
        return msg.sender;
    }

    /**
     * @dev Converts a uint256 to its ASCII string decimal representation.
     */
    function _toString(uint256 value) internal pure virtual returns (string memory str) {
        assembly {
            // The maximum value of a uint256 contains 78 digits (1 byte per digit),
            // but we allocate 0x80 bytes to keep the free memory pointer 32-byte word aliged.
            // We will need 1 32-byte word to store the length,
            // and 3 32-byte words to store a maximum of 78 digits. Total: 0x20 + 3 * 0x20 = 0x80.
            str := add(mload(0x40), 0x80)
            // Update the free memory pointer to allocate.
            mstore(0x40, str)

            // Cache the end of the memory to calculate the length later.
            let end := str

            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            // prettier-ignore
            for { let temp := value } 1 {} {
                str := sub(str, 1)
                // Write the character to the pointer.
                // The ASCII index of the '0' character is 48.
                mstore8(str, add(48, mod(temp, 10)))
                // Keep dividing `temp` until zero.
                temp := div(temp, 10)
                // prettier-ignore
                if iszero(temp) { break }
            }

            let length := sub(end, str)
            // Move the pointer 32 bytes leftwards to make room for the length.
            str := sub(str, 0x20)
            // Store the length.
            mstore(str, length)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/common/ERC2981.sol)

pragma solidity ^0.8.0;

import "IERC2981.sol";
import "ERC165.sol";

/**
 * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
 *
 * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
 * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
 *
 * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
 * fee is specified in basis points by default.
 *
 * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
 * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to
 * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
 *
 * _Available since v4.5._
 */
abstract contract ERC2981 is IERC2981, ERC165 {
    struct RoyaltyInfo {
        address receiver;
        uint96 royaltyFraction;
    }

    RoyaltyInfo private _defaultRoyaltyInfo;
    mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
        return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @inheritdoc IERC2981
     */
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) {
        RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId];

        if (royalty.receiver == address(0)) {
            royalty = _defaultRoyaltyInfo;
        }

        uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator();

        return (royalty.receiver, royaltyAmount);
    }

    /**
     * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
     * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
     * override.
     */
    function _feeDenominator() internal pure virtual returns (uint96) {
        return 10000;
    }

    /**
     * @dev Sets the royalty information that all ids in this contract will default to.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: invalid receiver");

        _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Removes default royalty information.
     */
    function _deleteDefaultRoyalty() internal virtual {
        delete _defaultRoyaltyInfo;
    }

    /**
     * @dev Sets the royalty information for a specific token id, overriding the global default.
     *
     * Requirements:
     *
     * - `receiver` cannot be the zero address.
     * - `feeNumerator` cannot be greater than the fee denominator.
     */
    function _setTokenRoyalty(
        uint256 tokenId,
        address receiver,
        uint96 feeNumerator
    ) internal virtual {
        require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice");
        require(receiver != address(0), "ERC2981: Invalid parameters");

        _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
    }

    /**
     * @dev Resets royalty information for the token id back to the global default.
     */
    function _resetTokenRoyalty(uint256 tokenId) internal virtual {
        delete _tokenRoyaltyInfo[tokenId];
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.0;

import "IERC165.sol";

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 *
 * _Available since v4.5._
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(uint256 tokenId, uint256 salePrice)
        external
        view
        returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)

pragma solidity ^0.8.0;

import "ECDSA.sol";

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
    // invalidate the cached domain separator if the chain id changes.
    bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
    uint256 private immutable _CACHED_CHAIN_ID;
    address private immutable _CACHED_THIS;

    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        bytes32 hashedName = keccak256(bytes(name));
        bytes32 hashedVersion = keccak256(bytes(version));
        bytes32 typeHash = keccak256(
            "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
        );
        _HASHED_NAME = hashedName;
        _HASHED_VERSION = hashedVersion;
        _CACHED_CHAIN_ID = block.chainid;
        _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
        _CACHED_THIS = address(this);
        _TYPE_HASH = typeHash;
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view returns (bytes32) {
        if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
            return _CACHED_DOMAIN_SEPARATOR;
        } else {
            return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
        }
    }

    function _buildDomainSeparator(
        bytes32 typeHash,
        bytes32 nameHash,
        bytes32 versionHash
    ) private view returns (bytes32) {
        return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)

pragma solidity ^0.8.0;

import "Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "libraries": {
    "TheStoics.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"address","name":"signer","type":"address"},{"internalType":"address","name":"receiver","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"ApproveToCaller","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[],"name":"ExceedsAllowance","type":"error"},{"inputs":[],"name":"ExceedsMaxSupply","type":"error"},{"inputs":[],"name":"InsufficientAmountSent","type":"error"},{"inputs":[],"name":"InvalidMintKey","type":"error"},{"inputs":[],"name":"InvalidQueryRange","type":"error"},{"inputs":[],"name":"MintERC2309QuantityExceedsLimit","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"NoMoreThanTwentyPerTransaction","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"OwnershipNotInitializedForExtraData","type":"error"},{"inputs":[],"name":"PublicSaleNotStarted","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"fromTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"toTokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"ConsecutiveTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint64","name":"how_many_stoics","type":"uint64"}],"name":"become_public_stoic","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes","name":"signature","type":"bytes"},{"components":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"uint8","name":"free","type":"uint8"},{"internalType":"uint8","name":"allowed","type":"uint8"},{"internalType":"uint8","name":"paid","type":"uint8"},{"internalType":"uint128","name":"price","type":"uint128"}],"internalType":"struct TheStoics.MintKey","name":"key","type":"tuple"}],"name":"become_stoic","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"day","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"explicitOwnershipOf","outputs":[{"components":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint64","name":"startTimestamp","type":"uint64"},{"internalType":"bool","name":"burned","type":"bool"},{"internalType":"uint24","name":"extraData","type":"uint24"}],"internalType":"struct IERC721A.TokenOwnership","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"explicitOwnershipsOf","outputs":[{"components":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"uint64","name":"startTimestamp","type":"uint64"},{"internalType":"bool","name":"burned","type":"bool"},{"internalType":"uint24","name":"extraData","type":"uint24"}],"internalType":"struct IERC721A.TokenOwnership[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"let_go_without_attachment","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"signature","type":"bytes"},{"components":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"uint8","name":"free","type":"uint8"},{"internalType":"uint8","name":"allowed","type":"uint8"},{"internalType":"uint8","name":"paid","type":"uint8"},{"internalType":"uint128","name":"price","type":"uint128"}],"internalType":"struct TheStoics.MintKey","name":"key","type":"tuple"}],"name":"search_after_truth","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newBaseURI","type":"string"}],"name":"show_true_colors","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"start_a_separate_life","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"tokensOfOwner","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"stop","type":"uint256"}],"name":"tokensOfOwnerIn","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"payable","type":"function"}]

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

-----Decoded View---------------
Arg [0] : name (string): THESTOICS
Arg [1] : symbol (string): THESTOICS
Arg [2] : signer (address): 0x5c863Ba28f926d235550426f0B3e2B27786b66a5
Arg [3] : receiver (address): 0x836f3A10F67a6a8A85714a5748e5CD9fB40111FD

-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000005c863ba28f926d235550426f0b3e2b27786b66a5
Arg [3] : 000000000000000000000000836f3a10f67a6a8a85714a5748e5cd9fb40111fd
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [5] : 54484553544f4943530000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [7] : 54484553544f4943530000000000000000000000000000000000000000000000