Contract 0xdEEf1d17f55DEEC1Ae29E2839029eb5733E2425B 4

 
 
Txn Hash
Method
Block
From
To
Value
0x51dfef27a2ebf45b864aa9bbfab635e8b7b3719533cd75e468d1dd0278006a04Mint Metablobs(pending)2022-08-19 15:19:068 hrs 26 mins ago0x4170ad220bb4ebd5b69fe64a3522b9c49175d768 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xa39dc71ef43e3bfc63e6e05668b0f36b1f78d9dccf55873c8e56442ff7589a62Mint Metablobs(pending)2022-08-19 15:19:068 hrs 26 mins ago0x4170ad220bb4ebd5b69fe64a3522b9c49175d768 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x228fc16d4adcb268c8080abe72e48fcb0cc169bdd39704030fd801bf82e57f15Mint Metablobs(pending)2022-08-19 15:19:068 hrs 26 mins ago0x4170ad220bb4ebd5b69fe64a3522b9c49175d768 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x04e772e4b1c68185aa354ec657275d39a22c4efee4b75a757987077662f88bc8Mint Metablobs(pending)2022-08-19 15:19:068 hrs 26 mins ago0x4170ad220bb4ebd5b69fe64a3522b9c49175d768 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x84f1a07419ea1bf821567b2fa3e79ebbd6b34e288ae18897d407d63bf794260bMint Metablobs(pending)2022-08-14 22:15:325 days 1 hr ago0x8107a42e1d43f7089ed9fddd594605e2ceecc4fd IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x3962c851dd46e80fc1513bc4965dedc68c18ea6a0579f4d586f32ab7982c3021Mint Metablobs(pending)2022-08-14 19:54:505 days 3 hrs ago0x7a421cec46ddddc7b4de5bc564e40bcf5ed7ffd8 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x9ed56044715c77e257a462f4e8995488b4fe567f7f699793b0095a128622717dMint Metablobs(pending)2022-08-14 16:53:545 days 6 hrs ago0x53c5875f7aada68b61c10c7d3ab7ba4bce2f3226 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x3758068b418bde53d90e334f7fc467f7e72b757e9ae6ec8864b4bf7e87b193bfMint Metablobs(pending)2022-08-14 6:27:255 days 17 hrs ago0x44c9fa37f6b8bc74426807a092bc54bc6f2e790d IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x19821bc6077f2a52359f7f125db4b2041541926e2f445f1ecfac6e790bd008acMint Metablobs(pending)2022-08-14 5:51:485 days 17 hrs ago0x965824e642326ca5e54d8644235d9a46247763f7 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x83435793b6a27e3299e3d903f4cd74a07d24cf3eba0dd0437bb47dd9c0a40567Mint Metablobs(pending)2022-08-14 5:51:485 days 17 hrs ago0x965824e642326ca5e54d8644235d9a46247763f7 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x337a992c8d177e038cc0273c50c6624ea73e09fbb6c0ccf0fa6d99fcbe71c5aeMint Metablobs(pending)2022-08-14 5:48:095 days 17 hrs ago0xf7ca8064613955e0cb2ebd9517af7b7f24f99242 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x5832132141c0016c3b2ec25707f2ed236e154b383e6f014e763342db93353b56Mint Metablobs(pending)2022-08-14 5:41:035 days 18 hrs ago0x7ad3bde0a500d4985d3ebc5fd969e2acf3c1c288 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xc52eb721bbf8526b7551f5061ef66c7d8d78d37c9876945e7c1cec0a579458f3Mint Metablobs(pending)2022-08-14 5:35:325 days 18 hrs ago0xc6a32012519a30140a877af991d5c557a298832d IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x91e69b1990687de3cdbe0424fd16da94c09d36cf36f61f6dda9334aa9a3bf514Mint Metablobs(pending)2022-08-14 5:18:455 days 18 hrs ago0x265e0b46f04bdf8eb895596c8452ad1b3c9e7beb IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xda749b46b0fc9400645087b019c67128d28a01d5cb1399647dc8692e62530164Mint Metablobs(pending)2022-08-14 5:17:425 days 18 hrs ago0x72fe0dbb401e18104b82f74d643fd6a5d6fcf938 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xf6fc8117fbfdb9f42736d7bedd2fa62d24288612d31e08d85ba10941ba87885aMint Metablobs(pending)2022-08-14 4:57:425 days 18 hrs ago0x8107a42e1d43f7089ed9fddd594605e2ceecc4fd IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x7b2f7a26fcd337749c6cfe053ff269591d5c4034e9c5bf6f755f58dfbe2609b1Mint Metablobs(pending)2022-08-14 4:54:245 days 18 hrs ago0x80216e7473d202c2ed7756be7e778b2931d27d9d IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xb10f6e656ad8f9abd80a66b611aeb19735bd4afe78134ca3164e1f03e77c9b3aMint Metablobs(pending)2022-08-14 4:54:245 days 18 hrs ago0x80216e7473d202c2ed7756be7e778b2931d27d9d IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xf8f0dfb136e2a710235018fb88f14afe004b8cd5df856922d765870af78edd33Mint Metablobs(pending)2022-08-14 4:30:505 days 19 hrs ago0xb62acef7c5d0e6dbc82d751cfc1c7561d0395261 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x4b51c1b0f15ca592c65bf2a9aab5b0b26a7dca534645f6b92aa9eb1a67001f15Mint Metablobs(pending)2022-08-14 4:30:205 days 19 hrs ago0x3ae5e6e47a5ddf344b38f4b71d881bb001863b28 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x0c3af8ce207a8b185af26a876d219f5b0ba4bf9b28fbbf189789720e56087637Mint Metablobs(pending)2022-08-14 4:30:205 days 19 hrs ago0x3ae5e6e47a5ddf344b38f4b71d881bb001863b28 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x437ebb4313a344a0b3992d15825a4c563436a46836884c61b0830f588afafc83Mint Metablobs(pending)2022-08-14 4:29:555 days 19 hrs ago0x53c5875f7aada68b61c10c7d3ab7ba4bce2f3226 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x46c20b317e9c0ae9d7d18bf040a58f47495299ecc90de5b13cf21280453c9103Mint Metablobs(pending)2022-08-14 4:13:085 days 19 hrs ago0xf7ca8064613955e0cb2ebd9517af7b7f24f99242 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0xf9903b8fea154e566261bb8a3c02d6f292ca31f140849a8e98a6f3b77adfaaaaMint Metablobs(pending)2022-08-14 3:53:595 days 19 hrs ago0x125d3ae5b9a23b28e924b8fba1a2e033a56790d9 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
0x9c8c9a6fa1b02d4ff045c7571c9cdd4c7557ca29a888ece4f33164a9d34f35f5Mint Metablobs(pending)2022-08-14 3:53:595 days 19 hrs ago0x125d3ae5b9a23b28e924b8fba1a2e033a56790d9 IN 0xdeef1d17f55deec1ae29e2839029eb5733e2425b0 Ether(Pending)(Pending)
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Contract Source Code Verified (Exact Match)

Contract Name:
Metablobs

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 13 : Metablobs.sol
// SPDX-License-Identifier: MIT

/*   
 ███▄ ▄███▓████▄▄▄█████▓▄▄▄      ▄▄▄▄   ██▓    ▒█████  ▄▄▄▄    ██████ 
▓██▒▀█▀ ██▓█   ▓  ██▒ ▓▒████▄   ▓█████▄▓██▒   ▒██▒  ██▓█████▄▒██    ▒ 
▓██    ▓██▒███ ▒ ▓██░ ▒▒██  ▀█▄ ▒██▒ ▄█▒██░   ▒██░  ██▒██▒ ▄█░ ▓██▄   
▒██    ▒██▒▓█  ░ ▓██▓ ░░██▄▄▄▄██▒██░█▀ ▒██░   ▒██   ██▒██░█▀   ▒   ██▒
▒██▒   ░██░▒████▒▒██▒ ░ ▓█   ▓██░▓█  ▀█░██████░ ████▓▒░▓█  ▀█▒██████▒▒
░ ▒░   ░  ░░ ▒░ ░▒ ░░   ▒▒   ▓▒█░▒▓███▀░ ▒░▓  ░ ▒░▒░▒░░▒▓███▀▒ ▒▓▒ ▒ ░
░  ░      ░░ ░  ░  ░     ▒   ▒▒ ▒░▒   ░░ ░ ▒  ░ ░ ▒ ▒░▒░▒   ░░ ░▒  ░ ░
░      ░     ░   ░       ░   ▒   ░    ░  ░ ░  ░ ░ ░ ▒  ░    ░░  ░  ░  
       ░     ░  ░            ░  ░░         ░  ░   ░ ░  ░           ░  
                                      ░                     ░   
 */

pragma solidity 0.8.4;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";

// to check balances of beneficiary NFT projects holdings
interface ERC721Interface {
    function balanceOf(address owner) external view returns (uint256 balance);
}

contract Metablobs is ERC721, Ownable, ReentrancyGuard {
  using Strings for uint256;
  using Address for address;
  using Counters for Counters.Counter;
  Counters.Counter private _tokenIds;

  constructor() ERC721("Metablobs", "MB") {
  }

  uint256 public constant MAX_SUPPLY = 100000;
  bool public mintingIsLive = false;
  string public baseUri = "ipfs://Qme4X5BP2RFXJSEmkUTBEUpcYjX2jNk4n8mFDuro1hfw4D/" ;

  // I can fit so many addresses in here
  mapping (address => uint256) public tokensPerAddress;

  // Beneficiary NFT Projects
  ERC721Interface flbc = ERC721Interface(0x193DaA9EDB94E316C1Ae41DC7B4c01AB1ee18A0e);
  ERC721Interface coolcats = ERC721Interface(0x1A92f7381B9F03921564a437210bB9396471050C);
  ERC721Interface bayc = ERC721Interface(0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D); 
  ERC721Interface turtletanks = ERC721Interface(0x6ca95B029E1bCA507c87d42B46157a76Dab54EC2);
  ERC721Interface creatures = ERC721Interface(0xc92cedDfb8dd984A89fb494c376f9A48b999aAFc);
  ERC721Interface animetas = ERC721Interface(0x18Df6C571F6fE9283B87f910E41dc5c8b77b7da5);
  ERC721Interface dogepound = ERC721Interface(0xF4ee95274741437636e748DdAc70818B4ED7d043);
  ERC721Interface uunicorns = ERC721Interface(0xC4a0b1E7AA137ADA8b2F911A501638088DFdD508);
  ERC721Interface mekaverse = ERC721Interface(0x9A534628B4062E123cE7Ee2222ec20B86e16Ca8F);
  ERC721Interface neotokyocitadelIdentity = ERC721Interface(0x86357A19E5537A8Fba9A004E555713BC943a66C0); 

  // thats right nerds, stay out of my function!
  modifier onlyEOA() {
      require(msg.sender == tx.origin, "prevent smart contract access: Only EOA");
      _;
  }

  // yes this is new Guerrilla coding
  function getAllowedMetablobsAmountFromHoldersOtherNFTHoldingsLongName(address tokenholder) public view returns(uint){
    uint allowance = 1;
    ERC721Interface[10] memory nftprojects = [flbc,coolcats, bayc,turtletanks,creatures,animetas,dogepound,uunicorns,mekaverse,neotokyocitadelIdentity];
    for(uint i = 0; i< nftprojects.length; i++){
      if(nftprojects[i].balanceOf(tokenholder) > 0){
        allowance += 1;
      }
    }
    return allowance;
  }

  // get your fresh Metablobs here!
  function mintMetablobs(address to) external onlyEOA nonReentrant {
    require(mintingIsLive, "too soon !");
    if(to == msg.sender){
      require(
        tokensPerAddress[msg.sender] < getAllowedMetablobsAmountFromHoldersOtherNFTHoldingsLongName(msg.sender), 
        "you minted enough, pal"
        );
      // mint the Metablobs straight to your home (wallet)!
      require(totalSupply() + 1 <= MAX_SUPPLY, "Thats enough Metablobs mintin' for today");
      tokensPerAddress[msg.sender] += 1;
      mintM(to);
    }
    else {
      // or to someone you like very much :
      require(totalSupply() + 2 <= MAX_SUPPLY, "Didnt you hear ? Thats enough Metablobs mintin' for today, buddy!");
      mintM(to);
      // who knows maybe they like you too...
      mintM(msg.sender);
    }
  }

  // you will never call this directly, friend ;)
  function mintM(address to) private {
    _safeMint(to, _tokenIds.current());
    _tokenIds.increment();
  }

  // "SET IT!" said the Setter
  function setBaseUri(string memory newBaseUri) external onlyOwner {
    baseUri = newBaseUri;
  }

  function switchMintingState() external onlyOwner {
    mintingIsLive = !mintingIsLive;
  }

  // ~ where ~ the ~ magic ~ happens ~
  function tokenURI(uint256 tokenId) public view override returns (string memory) {
    string memory _tokenURI = "Token with that ID does not exist.";
    if (_exists(tokenId)){
      _tokenURI = string(abi.encodePacked(baseUri, tokenId.toString(),  ".json"));
    }
    return _tokenURI;
  }
  
  //  riiight, who needs an entire import statement for that anyway ?
  function totalSupply() public view returns(uint){
    return _tokenIds.current();
  }

}

File 2 of 13 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // 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 Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @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 ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @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 virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        require(operator != _msgSender(), "ERC721: 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 virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

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

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @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.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: 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`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * 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
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

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

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), 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.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * 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, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

File 3 of 13 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 4 of 13 : Counters.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

File 5 of 13 : Strings.sol
// SPDX-License-Identifier: MIT

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 6 of 13 : Address.sol
// SPDX-License-Identifier: MIT

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 7 of 13 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

File 8 of 13 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @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 9 of 13 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

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 10 of 13 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @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);
}

File 11 of 13 : Context.sol
// SPDX-License-Identifier: MIT

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 12 of 13 : ERC165.sol
// SPDX-License-Identifier: MIT

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;
    }
}

File 13 of 13 : IERC165.sol
// SPDX-License-Identifier: MIT

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);
}

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

Contract Security Audit

Contract ABI

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e":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"tokensPerAddress","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":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","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.