Contract 0xe17505C7029CAD0B021599CC488A10824d63c356

 
 
Txn Hash
Method
Block
From
To
Value
0x819581005b9664ac34db65897ae249d8e1e9b2fea648467ecdbf1b7eac777267Set Uri Prefix160844812022-11-30 18:06:232 days 4 hrs ago0x668fefb29678b07d0b025ba4d91d854a288063b1 IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00053705 13.0934671
0xb9f7d258de824fd0930974e605adce8a67795ebab88501a542e128b7e17b8832Set Approval For...159842942022-11-16 18:13:2316 days 4 hrs agoENS Name tunaboss.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00071431 15.46203324
0x1ec81470cde163a68fd62f6f73771e520dd49e25b64da29b8636faa647009f94Safe Transfer Fr...159428902022-11-10 23:25:5921 days 23 hrs agoENS Name jackndwyer.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00194948 21.66915329
0xd3057e54216edb35b5a0876af117c069c2b7653b0b20550bfafe4b71d9c3d55dMint156852712022-10-05 23:45:3557 days 23 hrs ago0xf4fe790f3b1ac869a40d36d0b286a350ee6ffff5 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.00084524 10.13785289
0xbba965f042a6c18339a54614cd328642499117b2730797ec1d2b834739aa5aebSet Uri Prefix156615772022-10-02 16:11:4761 days 6 hrs ago0x668fefb29678b07d0b025ba4d91d854a288063b1 IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00042635 6.73764992
0x1f4143cbaf50cab96667ce37c77927b7bb922ca191c3a640ef6683decbe8a682Set Approval For...156536032022-10-01 13:26:4762 days 9 hrs agoENS Name asianriceee.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00082436 17.84414841
0x4ec7ba99e2544e35b3a2801a7d22a50528f121884d9de01724734df2cf037c24Withdraw156123052022-09-25 18:53:3568 days 4 hrs ago0x668fefb29678b07d0b025ba4d91d854a288063b1 IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00018621 6.10348302
0x7aeb81b91d0d516bb6987d4370268ce10e6fba119cd268fa2d9052c94fa2c715Mint156076772022-09-25 3:23:5968 days 19 hrs ago0x4ea2c161d98b93c4c285701c53371b1f94bfce11 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.00047563 5.54976969
0x14e008777d9164efacfb83453db8c0d953af99c89a09a103bc5b452604de980fSet Approval For...155965642022-09-23 14:12:1170 days 8 hrs ago0x8dbb9b19aab9ea00facab2bc3d065850fc99c20a IN  0xe17505c7029cad0b021599cc488a10824d63c3560 Ether0.00166829 36.11180629
0xa5abaaa0159e2c96b03f2790026dc8ac3d88369c2849ca6ba3f19530b175f1a8Mint155965382022-09-23 14:06:5970 days 8 hrs ago0x8dbb9b19aab9ea00facab2bc3d065850fc99c20a IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.00173485 26.17666181
0xe0bc45fa1e8f9e52e6ba3ce775eb9ef2e07afa7bf7e5ab387f41a089519a9403Mint155965052022-09-23 14:00:2370 days 8 hrs ago0x41cbe54ccdcca91177cb8c1cd0bc8e1d86251788 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.00218907 26.2557607
0x86253e57669042eb32b24eb623764fb033cba160f608dd9efc72d5f23b46307aMint155927222022-09-23 1:20:1170 days 21 hrs ago0x8dbb9b19aab9ea00facab2bc3d065850fc99c20a IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.0003731 4.47505865
0xc38b4a0175745f84ae29a162a4844ea0157bc4430575e198db8c9c53fc4249e5Mint155918682022-09-22 22:28:3571 days 29 mins agoENS Name thesheep.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560.1 Ether0.00061796 8.17553633
0xfcca737a9ca0a5f35d12c0205e93204adecb85b9dc8159e3f17329152d7843d1Mint155918552022-09-22 22:25:5971 days 31 mins agoMy Final Form: Deployer IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.00046393 7.00009628
0x055d6ea6ee04b974f292999139179c34fa42861c66ff73e8f908215efc168543Mint155918452022-09-22 22:23:5971 days 33 mins agoENS Name shepherdvito.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.00053067 7.73543109
0x1abdda6dace84319c9b53bf5a20821e2e592a68ca3f2eca6f26a2c806616ac26Mint155918302022-09-22 22:20:5971 days 36 mins ago0xbfd0d2e488a811a3f96958046619abbc5a55f6d4 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.00066961 8.03130497
0x75b4d24a3edd452cee43b88518077f0709c32a72fc3248fdafa680fcc5aaccf8Mint155918242022-09-22 22:19:4771 days 38 mins ago0x4156a0b6de663f70041860f5584b1a8c9ea50dc0 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.0007338 8.56217547
0x46728daaa213700be558e943c9d9599d93dbb2c2c1270c160f842f65404cba8aMint155918212022-09-22 22:19:1171 days 38 mins agoMy Final Form: Deployer IN  0xe17505c7029cad0b021599cc488a10824d63c3560.06 Ether0.00060365 8.51046764
0x4e1cab4dcf175a89eeb93c98dd19c141666b50294d198bfa28fc00935b27142aMint155918122022-09-22 22:17:2371 days 40 mins agoENS Name jackndwyer.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.00057567 6.71709162
0xee71d29808e67095bf183c46f7f3b84a54b740eb2fbebd7b96ce2a5bfccf8bb0Mint155918102022-09-22 22:16:5971 days 40 mins ago0xe9a02dd5c2ac0ec432fac217ce709394b297a28a IN  0xe17505c7029cad0b021599cc488a10824d63c3560.02 Ether0.00069105 8.28849996
0xcd62cb6ebea09d97029a633dac72060d64d495d36f9f80097d099cb8ec9ff80eMint155918062022-09-22 22:16:1171 days 41 mins ago0x799d82adec307033df02ecb67b7a34db70a5f8c8 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.06 Ether0.00077982 8.85854997
0xd261ab6045f14d99eedbe4fa00625f3d817c5c11f975868c3093a7b06a58166cMint155917842022-09-22 22:11:3571 days 46 mins agoENS Name thesheep.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.00071663 10.44608572
0x4dcf210c5427ddc8810d203037a2378187682977a6770589163827a298e428d5Mint155917712022-09-22 22:08:5971 days 48 mins ago0x20d172cea028a82e412ad3d96cd9ca8cc61ffd23 IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.00066835 7.79847598
0x0afdb4a849d005392834219f297003166a35da03de4f8865c9b9b25d0a3e849cMint155917692022-09-22 22:08:3571 days 49 mins agoMy Final Form: Deployer IN  0xe17505c7029cad0b021599cc488a10824d63c3560.06 Ether0.00063418 7.20410824
0xd3e28b75e81c31a4fc85e2d5b13a5bc84f8541bdc8803cc45b8fac7b8627c6e4Mint155917512022-09-22 22:04:5971 days 52 mins agoENS Name thesheep.eth IN  0xe17505c7029cad0b021599cc488a10824d63c3560.04 Ether0.00069969 10.1991237
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0x4ec7ba99e2544e35b3a2801a7d22a50528f121884d9de01724734df2cf037c24156123052022-09-25 18:53:3568 days 4 hrs ago 0xe17505c7029cad0b021599cc488a10824d63c3560x668fefb29678b07d0b025ba4d91d854a288063b11.31 Ether
0x03a702a6e19bf6810ef4fd0e4a0bad008d4f86d73e34f228c90afea669914887155825422022-09-21 15:08:3572 days 7 hrs ago 0xe17505c7029cad0b021599cc488a10824d63c3560x668fefb29678b07d0b025ba4d91d854a288063b10.02 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
TheKarens

Compiler Version
v0.8.17+commit.8df45f5f

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 2 : TheKarens.sol
// SPDX-License-Identifier: UNLICENSED


/*.                                 THE KARENS

################################################################################
################################################################################
################################################################################
################################################################################
################################################################################
#############################...........%####..........#########################
##########################...  ........ .....  ......  .%#######################
###############,#(##(........................................((#((,,############
###############.%######.....................................######..############
##########################..............................%#######################
##########################..............................%#######################
#######################&&&,,,,,,,,,,,,,......,,,,,,,,,,,@&######################
##########&&&&&&&&&&&&&,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&&&&&&&&&&&###########
##&@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&&#
##&@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&&#
####&&&&&&&&&&&&&&&@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&&&&&&&&&&&&&&&&###
####################&,,,,,,,,,,,,,@@@,,,,,,,,@@@,,,,,,,,,,,,&###################
####################&,,,,,,,,,,,,,,,,&&,,,,,&,,,,,,,,,,,,,,,&###################
####################&,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&###################
##################&@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&&#################
##################&@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,&&#################
##################&@,,,,,,,,,,,,,,,,,,,,@&,,,,,,,,,,,,,,,,,,,&&#################
##################&&&,,,,,,,,,,,,,,,,,,,@&,,,,,,,,,,,,,,,,,,&&&#################
##################&@,&&/,,,,,,,,,,,,,,,/@&//,,,,,,,,,,,,//&&/&&#################
####################&,,,@&&&&&&&&&&&&&&#####&&&&&&&&&&&&,,,,&###################
####################&,,,,,,,,,,,,,,,&########&&,,,,,,,,,,,,,&###################
#####################&&,,,,,,,,,,,,,&########&&,,,,,,,,,,,&&####################
#####################&&,,,,,,,,,,,&&#########&&,,,,,,,,,,,&&####################
#####################&&,,,,,,,,,,,&&#########&&,,,,,,,,,,,&&####################
#####################&&,,,,,,,,,,,&&#########&&,,,,,,,,,,,&&####################
#####################&&,,,,,,,,,,,,,&########&&,,,,,,,,,,,,,&###################
########################@&&&&&&&&&&&############@&&&&&&&&&&&####################
https://www.thekarens.io/
https://www.fyf.com/
https://twitter.com/fyfdotcom


*/


//Smart Contract by TheSheep#1211
pragma solidity ^0.8.0;
import "./ERC721S.sol";

contract TheKarens is ERC721A, Ownable {
  using Strings for uint256;

  string private uriPrefix = "https://thekarens.sfo3.digitaloceanspaces.com/json/";
  string private uriSuffix = ".json";
  string public hiddenMetadataUri;
  
  uint256 public price = 0.01 ether; // 0.01 eth Whitelisted addresses price 0.02 eth Public mint price (20000000000000000 wei)
  uint256 public maxSupply = 2000; 
  uint256 public maxMintAmountPerTx = 10; 
  uint256 public nftPerAddressLimitWl = 2; 
  
  bool public paused = false;
  bool public revealed = true;
  bool public onlyWhitelisted = true;
  address[] public whitelistedAddresses;
  mapping(address => uint256) public addressMintedBalance;


  constructor() ERC721A("TheKarens", "KRN$", maxMintAmountPerTx) {
    setHiddenMetadataUri("");
  }

  modifier mintCompliance(uint256 _mintAmount) {
    require(_mintAmount > 0 && _mintAmount <= maxMintAmountPerTx, "Invalid mint amount!");
    require(currentIndex + _mintAmount <= maxSupply, "Max supply exceeded!");
    _;
  }

  function mint(uint256 _mintAmount) public payable mintCompliance(_mintAmount)
   {
    require(!paused, "The contract is paused!");
    require(!onlyWhitelisted, "Presale is on");
    require(msg.value >= price * _mintAmount, "Insufficient funds!");
    
    
    _safeMint(msg.sender, _mintAmount);
  }

   function mintWhitelist(uint256 _mintAmount) public payable {
    uint256 ownerMintedCount = addressMintedBalance[msg.sender];
    
    require(!paused, "The contract is paused!");
    require(onlyWhitelisted, "Presale has ended");
    require(ownerMintedCount + _mintAmount <= nftPerAddressLimitWl, "max NFT per address exceeded");
    if(onlyWhitelisted == true) {
            require(isWhitelisted(msg.sender), "address is not Whitelisted");
        }
    require(msg.value >= price * _mintAmount, "Insufficient funds!");
    
    addressMintedBalance[msg.sender]+=_mintAmount;
    
    _safeMint(msg.sender, _mintAmount);
  }



  
  function AirdropTo(address _to, uint256 _mintAmount) public mintCompliance(_mintAmount) onlyOwner {
    _safeMint(_to, _mintAmount);
  }

 
  function walletOfOwner(address _owner)
    public
    view
    returns (uint256[] memory)
  {
    uint256 ownerTokenCount = balanceOf(_owner);
    uint256[] memory ownedTokenIds = new uint256[](ownerTokenCount);
    uint256 currentTokenId = 0;
    uint256 ownedTokenIndex = 0;

    while (ownedTokenIndex < ownerTokenCount && currentTokenId <= maxSupply) {
      address currentTokenOwner = ownerOf(currentTokenId);

      if (currentTokenOwner == _owner) {
        ownedTokenIds[ownedTokenIndex] = currentTokenId;

        ownedTokenIndex++;
      }

      currentTokenId++;
    }

    return ownedTokenIds;
  }

  function tokenURI(uint256 _tokenId)
    public
    view
    virtual
    override
    returns (string memory)
  {
    require(
      _exists(_tokenId),
      "ERC721Metadata: URI query for nonexistent token"
    );

    if (revealed == false) {
      return hiddenMetadataUri;
    }

    string memory currentBaseURI = _baseURI();
    return bytes(currentBaseURI).length > 0
        ? string(abi.encodePacked(currentBaseURI, _tokenId.toString(), uriSuffix))
        : "";
  }

  function setRevealed(bool _state) public onlyOwner {
    revealed = _state;
  }


  function setOnlyWhitelisted(bool _state) public onlyOwner {
    onlyWhitelisted = _state;
  }

  function setPrice(uint256 _price) public onlyOwner {
    price = _price;

  }
 
  function setHiddenMetadataUri(string memory _hiddenMetadataUri) public onlyOwner {
    hiddenMetadataUri = _hiddenMetadataUri;
  }

  function setNftPerAddressLimitWl(uint256 _limit) public onlyOwner {
    nftPerAddressLimitWl = _limit;
  }

  function setUriPrefix(string memory _uriPrefix) public onlyOwner {
    uriPrefix = _uriPrefix;
  }

  function setUriSuffix(string memory _uriSuffix) public onlyOwner {
    uriSuffix = _uriSuffix;
  }

  function setPaused(bool _state) public onlyOwner {
    paused = _state;
  }

  function _mintLoop(address _receiver, uint256 _mintAmount) internal {
      _safeMint(_receiver, _mintAmount);
  }

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

    function setMaxMintAmountPerTx(uint256 _maxMintAmountPerTx) public onlyOwner {
    maxMintAmountPerTx = _maxMintAmountPerTx;

  }

    function setMaxSupply(uint256 _maxSupply) public onlyOwner {
    maxSupply = _maxSupply;

    
  }
  function addWhitelistUsers(address[] calldata _users) public onlyOwner { //ARRAY users
    whitelistedAddresses = _users;
  }

    function isWhitelisted(address _user) public view returns (bool) {
    for (uint i = 0; i < whitelistedAddresses.length; i++) {
      if (whitelistedAddresses[i] == _user) {
          return true;
      }
    }
    return false;
  }

  // withdrawall addresses
  address t1 = 0xDeD17018BDD1302d389b06a5280cEb6F7F1b146F;
  

  function withdrawall() public onlyOwner {
        uint256 _balance = address(this).balance;
        
        require(payable(t1).send(_balance * 100 / 100 ));

  }
   function withdraw() public onlyOwner {
    (bool os, ) = payable(owner()).call{value: address(this).balance}("");
    require(os);
    
 
  }
  
}

File 2 of 2 : ERC721S.sol
// SPDX-License-Identifier: UNLICENSED

                                                                                                                                                              
                                                                                
//                           #@@@@@@@@@@@@@@@@@@@@@@@@@@&                         
//                       ,@@@*                           @@@@@@@@@@@@@@@@@@@%     
//                       ,@@@*                           @@@@@@@@@@@@@@@@@@@%     
//                   [email protected]@@/       @@@@@@@@@@@@@@@@@@@@*                      [email protected]@@/ 
//           @@@@@@@@/@@@/  [email protected]@@@,******************,@@@@*          [email protected]@@@   .(((*/
//           @@@@@@@@/@@@/  [email protected]@@@,,,,,,,,,,,,,,,,,,,,@@@@/...       [email protected]@@@       ,@
//       @@@@,,,,,,,,,,,,@@@&,,,,////,,,,,,,,,,,,,,,,,,,,@@@@,   @@@@,,,,@@@@/    
//       &@@@************@@@&,,,*@@@&,,,,,,,,#@@@*,,,,,,,@@@@,   @@@@,,,,&&&&#///.
//           @@@@@@@@@@@@@@@&,,,*@@@&,,,,,,,,#@@@*,,,,,,,@@@@,   @@@@,,,,,,,,@@@@*
//                   @@@@,,,,,,,*&&&%,,,,,,,,#@@@*,,,,,,,@@@@,      [email protected]@@@@@@@/    
//                   @@@@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,@@@@,      [email protected]@@@@@@@/    
//               @@@@,,,,,,,,,,,,,,,,@@@@,,,,,,,,,,,,,,,,@@@@,                    
//               @@@@,,,,,,,,,,,,,,,,,,,*,,,,,,,,,,,,@@@@*...                     
//               @@@@,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,@@@@*                        
//           @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.                        
//           @@@@%%%%@@@@%%%%@@@@%%%%@@@@%%%%@@@@%%%%@@@@.                        
//           @@@@    @@@@   [email protected]@@@    @@@@    @@@@    @@@@.                        
//               @@@@@@@@   [email protected]@@@    @@@@    @@@@@@@@        ....                 
//               @@@@@@@@   [email protected]@@@    @@@@    @@@@@@@@        ....                 
//                   @@@@@@@@@@@@@@@@@@@@@@@@@@@&............                     
//                   &@@@/,,,,,,,,,,,(@@@(...,,,,                                 
//                   &@@@,           /@@@(   ....                                 
//                       #@@@,   ,@@@%.......                                     
//                       %@@@,   ,@@@%...        ....            ....             
//                           #@@@,,,,....        .,,,            ,,,.             
//


// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

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

    /**
     * @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);
    }
}
// File: @openzeppelin/contracts/utils/Address.sol


// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol


// 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);
}

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol


// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;


/**
 * @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;
    }
}

// File: @openzeppelin/contracts/token/ERC721/IERC721.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;


/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @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
    ) external;

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

    /**
     * @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 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);

    /**
     * @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 calldata data
    ) external;
}

// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;


/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {
    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;


/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @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);
}


pragma solidity ^0.8.0;


/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
 *
 * Does not support burning tokens to address(0).
 *
 * Assumes that an owner cannot have more than the 2**128 (max value of uint128) of supply
 */
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
    using Address for address;
    using Strings for uint256;

    struct TokenOwnership {
        address addr;
        uint64 startTimestamp;
    }

    struct AddressData {
        uint128 balance;
        uint128 numberMinted;
    }

    uint256 internal currentIndex = 0;

    uint256 internal immutable maxBatchSize;

    // 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 ownershipOf implementation for details.
    mapping(uint256 => TokenOwnership) internal _ownerships;

    // Mapping owner address to address data
    mapping(address => AddressData) private _addressData;

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

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

    /**
     * @dev
     * `maxBatchSize` refers to how much a minter can mint at a time.
     */
    constructor(
        string memory name_,
        string memory symbol_,
        uint256 maxBatchSize_
    ) {
        require(maxBatchSize_ > 0, 'ERC721A: max batch size must be nonzero');
        _name = name_;
        _symbol = symbol_;
        maxBatchSize = maxBatchSize_;
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return currentIndex;
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view override returns (uint256) {
        require(index < totalSupply(), 'ERC721A: global index out of bounds');
        return index;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     * This read function is O(totalSupply). If calling from a separate contract, be sure to test gas first.
     * It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
        require(index < balanceOf(owner), 'ERC721A: owner index out of bounds');
        uint256 numMintedSoFar = totalSupply();
        uint256 tokenIdsIdx = 0;
        address currOwnershipAddr = address(0);
        for (uint256 i = 0; i < numMintedSoFar; i++) {
            TokenOwnership memory ownership = _ownerships[i];
            if (ownership.addr != address(0)) {
                currOwnershipAddr = ownership.addr;
            }
            if (currOwnershipAddr == owner) {
                if (tokenIdsIdx == index) {
                    return i;
                }
                tokenIdsIdx++;
            }
        }
        revert('ERC721A: unable to get token of owner by index');
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            interfaceId == type(IERC721Enumerable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        require(owner != address(0), 'ERC721A: balance query for the zero address');
        return uint256(_addressData[owner].balance);
    }

    function _numberMinted(address owner) internal view returns (uint256) {
        require(owner != address(0), 'ERC721A: number minted query for the zero address');
        return uint256(_addressData[owner].numberMinted);
    }

    function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
        require(_exists(tokenId), 'ERC721A: owner query for nonexistent token');

        uint256 lowestTokenToCheck;
        if (tokenId >= maxBatchSize) {
            lowestTokenToCheck = tokenId - maxBatchSize + 1;
        }

        for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
            TokenOwnership memory ownership = _ownerships[curr];
            if (ownership.addr != address(0)) {
                return ownership;
            }
        }

        revert('ERC721A: unable to determine the owner of token');
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return ownershipOf(tokenId).addr;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), 'ERC721Metadata: URI query for nonexistent token');

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

    /**
     * @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, can be overriden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return '';
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = ERC721A.ownerOf(tokenId);
        require(to != owner, 'ERC721A: approval to current owner');

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            'ERC721A: approve caller is not owner nor approved for all'
        );

        _approve(to, tokenId, owner);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view override returns (address) {
        require(_exists(tokenId), 'ERC721A: approved query for nonexistent token');

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public override {
        require(operator != _msgSender(), 'ERC721A: approve to caller');

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

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public override {
        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public override {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public override {
        _transfer(from, to, tokenId);
        require(
            _checkOnERC721Received(from, to, tokenId, _data),
            'ERC721A: transfer to non ERC721Receiver implementer'
        );
    }

    /**
     * @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 (`_mint`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return tokenId < currentIndex;
    }

    function _safeMint(address to, uint256 quantity) internal {
        _safeMint(to, quantity, '');
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` cannot be larger than the max batch size.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal {
        uint256 startTokenId = currentIndex;
        require(to != address(0), 'ERC721A: mint to the zero address');
        // We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering.
        require(!_exists(startTokenId), 'ERC721A: token already minted');
        require(quantity <= maxBatchSize, 'ERC721A: quantity to mint too high');
        require(quantity > 0, 'ERC721A: quantity must be greater 0');

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

        AddressData memory addressData = _addressData[to];
        _addressData[to] = AddressData(
            addressData.balance + uint128(quantity),
            addressData.numberMinted + uint128(quantity)
        );
        _ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));

        uint256 updatedIndex = startTokenId;

        for (uint256 i = 0; i < quantity; i++) {
            emit Transfer(address(0), to, updatedIndex);
            require(
                _checkOnERC721Received(address(0), to, updatedIndex, _data),
                'ERC721A: transfer to non ERC721Receiver implementer'
            );
            updatedIndex++;
        }

        currentIndex = updatedIndex;
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) private {
        TokenOwnership memory prevOwnership = ownershipOf(tokenId);

        bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
            getApproved(tokenId) == _msgSender() ||
            isApprovedForAll(prevOwnership.addr, _msgSender()));

        require(isApprovedOrOwner, 'ERC721A: transfer caller is not owner nor approved');

        require(prevOwnership.addr == from, 'ERC721A: transfer from incorrect owner');
        require(to != address(0), 'ERC721A: transfer to the zero address');

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId, prevOwnership.addr);

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        unchecked {
            _addressData[from].balance -= 1;
            _addressData[to].balance += 1;
        }

        _ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));

        // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
        // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
        uint256 nextTokenId = tokenId + 1;
        if (_ownerships[nextTokenId].addr == address(0)) {
            if (_exists(nextTokenId)) {
                _ownerships[nextTokenId] = TokenOwnership(prevOwnership.addr, prevOwnership.startTimestamp);
            }
        }

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

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(
        address to,
        uint256 tokenId,
        address owner
    ) private {
        _tokenApprovals[tokenId] = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert('ERC721A: transfer to non ERC721Receiver implementer');
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     *
     * 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`.
     */
    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.
     *
     * 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` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"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":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","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":"_mintAmount","type":"uint256"}],"name":"AirdropTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_users","type":"address[]"}],"name":"addWhitelistUsers","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"addressMintedBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"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":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"hiddenMetadataUri","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"address","name":"_user","type":"address"}],"name":"isWhitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxMintAmountPerTx","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_mintAmount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_mintAmount","type":"uint256"}],"name":"mintWhitelist","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nftPerAddressLimitWl","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"onlyWhitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revealed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_hiddenMetadataUri","type":"string"}],"name":"setHiddenMetadataUri","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxMintAmountPerTx","type":"uint256"}],"name":"setMaxMintAmountPerTx","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxSupply","type":"uint256"}],"name":"setMaxSupply","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_limit","type":"uint256"}],"name":"setNftPerAddressLimitWl","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_state","type":"bool"}],"name":"setOnlyWhitelisted","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_state","type":"bool"}],"name":"setPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_price","type":"uint256"}],"name":"setPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_state","type":"bool"}],"name":"setRevealed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_uriPrefix","type":"string"}],"name":"setUriPrefix","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_uriSuffix","type":"string"}],"name":"setUriSuffix","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":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"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":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"walletOfOwner","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"whitelistedAddresses","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawall","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.