Contract 0x9E32DB713005dcfB6A9a6722912c379161027B99

 
 
Txn Hash
Method
Block
From
To
Value
0xf11aea968605134c84d4ee51d28569357131f014c7808d5a11c401b2df42ca82Set Approval For...155854382022-09-22 0:53:597 days 14 hrs agoKaprika Kingdom: Deployer IN  Stoned Santa: SNT Token0 Ether0.00028656 6.11031215
0x9bb7c19ee38b998aaed8f3b0abe57b02e1488b7387256680d81cd2198175dfa0Set Approval For...155850732022-09-21 23:39:597 days 15 hrs agoKaprika Kingdom: Deployer IN  Stoned Santa: SNT Token0 Ether0.00040945 8.74617332
0x977bcc79f8c67c2f048970ed0eb6ef555bb7d16d52b40dae2996b45438b6b1eaTransfer From155724802022-09-20 5:01:599 days 10 hrs ago0x157376710017ff7dba3fda7dc1502dcdb8c5e093 IN  Stoned Santa: SNT Token0 Ether0.00032589 5.33893847
0x8696bd6e91f933dad71cc71d2b1871f0a2c7ee46de4544f83673ae21cdfa79c4Set Approval For...153865382022-08-21 22:15:5938 days 17 hrs ago0x12cf2528ae2c5cbcfdfe6662ec5d83aae5058f0a IN  Stoned Santa: SNT Token0 Ether0.0005379 11.48999264
0x958ff84f54312a5588b3e5052730c9452d0dfacd5f88cd8146542e5d33f5797cSet Approval For...152832622022-08-05 15:58:1254 days 23 hrs ago0x157376710017ff7dba3fda7dc1502dcdb8c5e093 IN  Stoned Santa: SNT Token0 Ether0.000741 15.82841733
0xd3f0293176c84dff1ff869ff2949688fe5cbc9a1255d3ee34317821db335f5b8Transfer From151656632022-07-18 8:49:5773 days 6 hrs agoKaprika Kingdom: Deployer IN  Stoned Santa: SNT Token0 Ether0.00103178 16.90286202
0xe29aa84e12f041b655b47a8a9127e30117c8a40526bc526c9dc055e63c023803Set Approval For...150546152022-07-01 5:01:1690 days 10 hrs agoENS Name 710taliban.eth IN  Stoned Santa: SNT Token0 Ether0.00049308 18.31989806
0x986fc94608d86e556e002e0d898b4d49a2e3c63be4713a62a6ef06f71ed2207dSet Approval For...150546142022-07-01 5:01:0090 days 10 hrs agoENS Name 710taliban.eth IN  Stoned Santa: SNT Token0 Ether0.00079249 16.92823899
0xb9e3e8f5bd6775584baa59e0ce2b448ee14193bdfdeaea6ad19fdd983f3e29a9Set Approval For...148334662022-05-24 3:35:15128 days 11 hrs agoKaprika Kingdom: Deployer IN  Stoned Santa: SNT Token0 Ether0.00106953 22.80499615
0x1911fb52d063be99ac12d4ab4e84cc85315aaae9d76fa51ef69251d9b294ddf2Buy Santa148279772022-05-23 6:20:15129 days 9 hrs ago0xe81343b9c5e07d2c11faf209ef00462670e0d7a1 IN  Stoned Santa: SNT Token0 Ether0.00095769 11
0x2cde645c5e669bb70e877b5970abbdac773ac5f8d774fa1fcccde8a22f728c46Transfer From143836122022-03-14 8:21:23199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00075644 18.5549015
0x04502a6d58e5f3477964858ef20410e76676d4fab9d1281cb58e8b5085478fcdTransfer From143836122022-03-14 8:21:23199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00122169 18.5549015
0xe55db1692ee4e80211ad851ba3b2be9b3bc6268355d4677346dfc8fdd530637fBuy Santa143834062022-03-14 7:34:04199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00145428 16.70385777
0x4b557320e03f55e07d73330e6453b0c227d2c8df27c2c006424a1c7c010c603cBuy Santa143834062022-03-14 7:34:04199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00145428 16.70385777
0x2cfd85377db5489745337c4e83b0218b6074c69bf9e99b2a3315ff28f7853494Buy Santa143834042022-03-14 7:33:23199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00147395 16.92977823
0x1e6b38dc9b844003a534956a7f10dff62e6c83fa968d577f3f29b0af963d4e03Buy Santa143834032022-03-14 7:31:56199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00133439 15.32678467
0x0425a5e079b1dc2764627593ee2e7d6e70c8c3827fa3b758024da11b457854caBuy Santa143833882022-03-14 7:29:41199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00154532 17.7495029
0x139ce0e06ef7a24008a178602b95e7cc04852b5e6eded6bfa8946bba531ec8e7Buy Santa143833862022-03-14 7:29:13199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00143352 16.46541138
0xbc965c5b573ea18d116ce8a66384b47aed1f3afc382c51e1e2c0c2a69b81d53aBuy Santa143833832022-03-14 7:28:38199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00151293 17.37747554
0xabf2dda7800d8e5d8b31419503689bd8c51d27253af1ccce7db1ad480cc10c37Buy Santa143833812022-03-14 7:28:17199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00139567 16.03062774
0x4b73551c9d9f0f362ce6151c150dae0256b58a5aadf108eb68fa0bc7a86ec5c3Buy Santa143833772022-03-14 7:27:45199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00178843 20.54189192
0x39a59fc48315f71fa9ab9f38ae69f4413d6450d3007d5d466088497980a9ceaeBuy Santa143833772022-03-14 7:27:45199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00178843 20.54189192
0x7eb89c4fbf43e6d91a16ad62a210127f34caef28e4d57f61d5822fefdb79a41aBuy Santa143833752022-03-14 7:26:54199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00149476 17.16879899
0x6db104b3688ca117a668b9d3200eb4dfd5f62ae54e176a80f3901699bfc189f3Buy Santa143833752022-03-14 7:26:54199 days 7 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00149476 17.16879899
0x1c7254d708d82f795e7924e8d89d3ef1b5b3b69dfff3ea94bafa6bff57f390bfBuy Santa143833632022-03-14 7:24:26199 days 8 hrs ago0x2dce28d095a5ed8e846b59a1093eb02efe7e52d5 IN  Stoned Santa: SNT Token0 Ether0.00167045 19.18671621
[ Download CSV Export 

OVERVIEW

Welcome to the site of the year-round Christmas NFT project «Stoned Santa»! Now everyone can get their cool Stoned Santa for Christmas in their original gift box. On a magical Christmas midnight, all gift wrappers will open and the user can see which Santa they owned.

View more zero value Internal Transactions in Advanced View mode
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
StonedSanta

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 20 runs

Other Settings:
default evmVersion
File 1 of 16 : StonedSanta.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./ERC721.sol";
import "./Ownable.sol";
import "./Strings.sol";

import "./common/meta-transactions/ContentMixin.sol";
import "./common/meta-transactions/NativeMetaTransaction.sol";

contract OwnableDelegateProxy {}

contract ProxyRegistry {
    mapping(address => OwnableDelegateProxy) public proxies;
}

/**
 * @title StonedSanta
 * StonedSanta - ERC721 contract that whitelists a trading address, and has minting functionality.
 */
contract StonedSanta is ERC721, ContextMixin, NativeMetaTransaction, Ownable {
    using SafeMath for uint256;

    address proxyRegistryAddress;
    string private _baseTokenURI;
    string constant name1 = "Stoned Santa";
    string constant symbol1 = "SNT";

    mapping(uint256 => bool) public _distributed;
    address private _preMintReceiver = 0x5e6CF45E44f03D1ee20d76e288D6f92368678185;
    address payable private _nftFund = payable(0x9e808c0FfB7ce205a8DA114419338b11b6134BaA);
    address payable private _developer = payable(0x0a310fa4FbCEe430f7CC3b06AB1B1e08f8cE7689);
    address private _collectionOwner = 0xA4168d8991656d58Cd0c2A0a037C0C3595C169c9;

    uint256 public constant MAX_SUPPLY = 20000;

    event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed fromAddress, address indexed toAddress);
    event PermanentURI(string _value, uint256 indexed _id);

    constructor(
        address _proxyRegistryAddress
    ) ERC721(name1, symbol1) {

        require(msg.sender == _preMintReceiver);
        proxyRegistryAddress = _proxyRegistryAddress;
        _initializeEIP712(name1);
        
        setBaseTokenURI("ipfs://QmVMA8RFWVu2S1tKuBWee8ou2sCjbZF2feht1DGG548KGn/");
        transferOwnership(_collectionOwner);

        
        mintAllNFT();

    }

    /**
     * @dev Mints all tokens
     */
    function mintAllNFT() internal {
        ERC721._balances[_preMintReceiver] = MAX_SUPPLY;
        emit ConsecutiveTransfer(1, MAX_SUPPLY, address(0), _preMintReceiver);
    }

    function _afterTokenTransfer(address, address, uint256 tokenId) internal override {
        if(!_distributed[tokenId]) {
            _distributed[tokenId] = true;
        }
    }

    function ownerOf(uint256 tokenId) public view override returns (address) {
        address owner = ERC721._owners[tokenId];
        if (!_distributed[tokenId] && tokenId > 0 && tokenId <= MAX_SUPPLY) {
            owner = _preMintReceiver;
        }
        require(owner != address(0), "Stoned Santa: owner query for nonexistent token");
        return owner;
    }

    function _exists(uint256 tokenId) internal view override returns (bool) {
        if (!_distributed[tokenId]) {
            return tokenId <= MAX_SUPPLY && tokenId > 0;
        } else {
            return ERC721._owners[tokenId] != address(0);
        }
    }

    function buySanta(uint id)
        public
        payable
    {
        require(id > 0 && id <= MAX_SUPPLY, "Invalid NFT id");
        require(!_distributed[id], "NFT has already been purchased");
        require(getPrice(id) == msg.value, "Ether value sent is not correct");

        _transfer(_preMintReceiver, msg.sender, id);
    }

    function getPrice(uint id)
        public
        pure
        returns (uint256 price)
    {
        require(id > 0 && id <= MAX_SUPPLY, "Invalid NFT id");

        if (id <= 500) {
            return 0; 
        } else if (id <= 2500) {
            return 0.03 ether;
        } else if (id <= 4000) {
            return 0.04 ether;
        } else if (id <= 5000) {
            return 0.05 ether;
        } else if (id <= 6000) {
            return 0.06 ether;
        } else if (id <= 7500) {
            return 0.07 ether;
        } else if (id <= 10000) {
            return 0.08 ether;
        } else if (id <= 12500) {
            return 0.1 ether;
        } else if (id <= 15000) {
            return 0.2 ether;
        } else if (id <= 17500) {
            return 0.3 ether;
        } else if (id <= 19986) {
            return 1 ether;
        } else if (id <= MAX_SUPPLY) {
            return 10 ether;
        }
    }

    function withdraw()
        public
        onlyOwner
    {
        address payable receiver = payable(owner());
        uint balance = address(this).balance;
        uint256 ownerAmount = balance * 85 / 100;
        uint256 fundAmount = balance * 10 / 100;
        uint256 devAmount = balance - ownerAmount - fundAmount;
        bool sent; 
        (sent,) = receiver.call{value: ownerAmount }("");
        require(sent, "Failed to send Ether");
        (sent,) = _nftFund.call{value: fundAmount }("");
        require(sent, "Failed to send Ether");
        (sent,) = _developer.call{value: devAmount }("");
        require(sent, "Failed to send Ether");
    } 

    function setBaseTokenURI(string memory _url) public onlyOwner {
        _baseTokenURI = _url;
    }

    function freezeMetadata(uint256 tokenId) external onlyOwner {
        require(bytes(baseTokenURI()).length != 0);
        emit PermanentURI(string(abi.encodePacked(baseTokenURI(), Strings.toString(tokenId))), tokenId);
    }

    function baseTokenURI() public view returns (string memory) {
        return _baseTokenURI;
    }

    function tokenURI(uint256 _tokenId) override public view returns (string memory) {
        return string(abi.encodePacked(baseTokenURI(), Strings.toString(_tokenId)));
    }

    /**
     * Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-less listings.
     */
    function isApprovedForAll(address owner, address operator)
        override
        public
        view
        returns (bool)
    {
        // Whitelist OpenSea proxy contract for easy trading.
        ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress);
        if (address(proxyRegistry.proxies(owner)) == operator) {
            return true;
        }

        return super.isApprovedForAll(owner, operator);
    }

    /**
     * This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea.
     */
    function _msgSender()
        internal
        override
        view
        returns (address sender)
    {
        return ContextMixin.msgSender();
    }
}

File 2 of 16 : NativeMetaTransaction.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import {SafeMath} from  "openzeppelin-solidity/contracts/utils/math/SafeMath.sol";
import {EIP712Base} from "./EIP712Base.sol";

contract NativeMetaTransaction is EIP712Base {
    using SafeMath for uint256;
    bytes32 private constant META_TRANSACTION_TYPEHASH = keccak256(
        bytes(
            "MetaTransaction(uint256 nonce,address from,bytes functionSignature)"
        )
    );
    event MetaTransactionExecuted(
        address userAddress,
        address payable relayerAddress,
        bytes functionSignature
    );
    mapping(address => uint256) nonces;

    /*
     * Meta transaction structure.
     * No point of including value field here as if user is doing value transfer then he has the funds to pay for gas
     * He should call the desired function directly in that case.
     */
    struct MetaTransaction {
        uint256 nonce;
        address from;
        bytes functionSignature;
    }

    function executeMetaTransaction(
        address userAddress,
        bytes memory functionSignature,
        bytes32 sigR,
        bytes32 sigS,
        uint8 sigV
    ) public payable returns (bytes memory) {
        MetaTransaction memory metaTx = MetaTransaction({
            nonce: nonces[userAddress],
            from: userAddress,
            functionSignature: functionSignature
        });

        require(
            verify(userAddress, metaTx, sigR, sigS, sigV),
            "Signer and signature do not match"
        );

        // increase nonce for user (to avoid re-use)
        nonces[userAddress] = nonces[userAddress].add(1);

        emit MetaTransactionExecuted(
            userAddress,
            payable(msg.sender),
            functionSignature
        );

        // Append userAddress and relayer address at the end to extract it from calling context
        (bool success, bytes memory returnData) = address(this).call(
            abi.encodePacked(functionSignature, userAddress)
        );
        require(success, "Function call not successful");

        return returnData;
    }

    function hashMetaTransaction(MetaTransaction memory metaTx)
        internal
        pure
        returns (bytes32)
    {
        return
            keccak256(
                abi.encode(
                    META_TRANSACTION_TYPEHASH,
                    metaTx.nonce,
                    metaTx.from,
                    keccak256(metaTx.functionSignature)
                )
            );
    }

    function getNonce(address user) public view returns (uint256 nonce) {
        nonce = nonces[user];
    }

    function verify(
        address signer,
        MetaTransaction memory metaTx,
        bytes32 sigR,
        bytes32 sigS,
        uint8 sigV
    ) internal view returns (bool) {
        require(signer != address(0), "NativeMetaTransaction: INVALID_SIGNER");
        return
            signer ==
            ecrecover(
                toTypedMessageHash(hashMetaTransaction(metaTx)),
                sigV,
                sigR,
                sigS
            );
    }
}

File 3 of 16 : Initializable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract Initializable {
    bool inited = false;

    modifier initializer() {
        require(!inited, "already inited");
        _;
        inited = true;
    }
}

File 4 of 16 : EIP712Base.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import {Initializable} from "./Initializable.sol";

contract EIP712Base is Initializable {
    struct EIP712Domain {
        string name;
        string version;
        address verifyingContract;
        bytes32 salt;
    }

    string constant public ERC712_VERSION = "1";

    bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256(
        bytes(
            "EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)"
        )
    );
    bytes32 internal domainSeperator;

    // supposed to be called once while initializing.
    // one of the contracts that inherits this contract follows proxy pattern
    // so it is not possible to do this in a constructor
    function _initializeEIP712(
        string memory name
    )
        internal
        initializer
    {
        _setDomainSeperator(name);
    }

    function _setDomainSeperator(string memory name) internal {
        domainSeperator = keccak256(
            abi.encode(
                EIP712_DOMAIN_TYPEHASH,
                keccak256(bytes(name)),
                keccak256(bytes(ERC712_VERSION)),
                address(this),
                bytes32(getChainId())
            )
        );
    }

    function getDomainSeperator() public view returns (bytes32) {
        return domainSeperator;
    }

    function getChainId() public view returns (uint256) {
        uint256 id;
        assembly {
            id := chainid()
        }
        return id;
    }

    /**
     * Accept message hash and returns hash message in EIP712 compatible form
     * So that it can be used to recover signer from signature signed using EIP712 formatted data
     * https://eips.ethereum.org/EIPS/eip-712
     * "\\x19" makes the encoding deterministic
     * "\\x01" is the version byte to make it compatible to EIP-191
     */
    function toTypedMessageHash(bytes32 messageHash)
        internal
        view
        returns (bytes32)
    {
        return
            keccak256(
                abi.encodePacked("\x19\x01", getDomainSeperator(), messageHash)
            );
    }
}

File 5 of 16 : ContentMixin.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

abstract contract ContextMixin {
    function msgSender()
        internal
        view
        returns (address payable sender)
    {
        if (msg.sender == address(this)) {
            bytes memory array = msg.data;
            uint256 index = msg.data.length;
            assembly {
                // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those.
                sender := and(
                    mload(add(array, index)),
                    0xffffffffffffffffffffffffffffffffffffffff
                )
            }
        } else {
            sender = payable(msg.sender);
        }
        return sender;
    }
}

File 6 of 16 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant alphabet = "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] = alphabet[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

}

File 7 of 16 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 8 of 16 : 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 9 of 16 : 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 10 of 16 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./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 11 of 16 : 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);
}

File 12 of 16 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./IERC721Metadata.sol";
import "./Address.sol";
import "./Context.sol";
import "./Strings.sol";
import "./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}.
 */
abstract 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) internal _owners;

    // Mapping owner address to token count
    mapping (address => uint256) internal _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}. 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 = 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 = 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 = 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(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;
        
        _afterTokenTransfer(from, to, tokenId);

        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(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(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    // solhint-disable-next-line no-inline-assembly
                    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` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * 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 { }
    
    function _afterTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}

File 13 of 16 : 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 14 of 16 : 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) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 15 of 16 : 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;
        // solhint-disable-next-line no-inline-assembly
        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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 16 of 16 : SafeMath.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 20
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_proxyRegistryAddress","type":"address"}],"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":"uint256","name":"fromTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"toTokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"fromAddress","type":"address"},{"indexed":true,"internalType":"address","name":"toAddress","type":"address"}],"name":"ConsecutiveTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"address payable","name":"relayerAddress","type":"address"},{"indexed":false,"internalType":"bytes","name":"functionSignature","type":"bytes"}],"name":"MetaTransactionExecuted","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":false,"internalType":"string","name":"_value","type":"string"},{"indexed":true,"internalType":"uint256","name":"_id","type":"uint256"}],"name":"PermanentURI","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":[],"name":"ERC712_VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"_distributed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":[],"name":"baseTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"buySanta","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"},{"internalType":"bytes","name":"functionSignature","type":"bytes"},{"internalType":"bytes32","name":"sigR","type":"bytes32"},{"internalType":"bytes32","name":"sigS","type":"bytes32"},{"internalType":"uint8","name":"sigV","type":"uint8"}],"name":"executeMetaTransaction","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"freezeMetadata","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDomainSeperator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getNonce","outputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"getPrice","outputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"stateMutability":"pure","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":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","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":"_url","type":"string"}],"name":"setBaseTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"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":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c1

-----Decoded View---------------
Arg [0] : _proxyRegistryAddress (address): 0xa5409ec958C83C3f309868babACA7c86DCB077c1

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c1


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
Loading
Loading
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.

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.