Contract 0xe39Fb076bd6Be0bbf400db0dfaD28104fDc5FF46 2

 
 
Txn Hash
Method
Block
From
To
Value
0xff35de9aaf8c36968989aef3955dcb53b217d989ba82ac3f3d4366d5e674aacdSet Approval For...156593242022-10-02 8:40:1136 mins agoENS Name 36543.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.000121565
0x7f828c790e29423d8db7c2bf842b5fabdf072607230fc42b979588c1d807635fSet Approval For...156582022022-10-02 4:54:594 hrs 21 mins ago0xbbe82f6fdba485ba0f6f4d3ce55adc2e6c94d2c5 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00023116 5.00997321
0xab5ad28ff6fea8d4e710b5985120dd521f4f37fc4b719a42f76593a923be6fc6Set Approval For...156580702022-10-02 4:28:354 hrs 48 mins ago0x284901d059c92074cc13b7a05875b49c5803ec47 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00027634 5.98923767
0xf4e859c4fc7807c2f437656e26cf9eb04b4ebe76bc59b5d824f8d6d7da4a64f6Set Approval For...156576752022-10-02 3:09:236 hrs 7 mins agoENS Name aspartamus.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00026335 5.70766536
0x94f6eaf53050e14ce414284158567df3990b9d3f4a7ebcc7a3c07cc37322b016Set Approval For...156568842022-10-02 0:30:478 hrs 45 mins ago0xdad1302a9e2459ae07f673a2b978f70030be0394 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00044099 9.55765105
0xda064eef4f216017dcf23bb47fef17b88c0e14c8e112f47ef555fe161c5f7ec1Set Approval For...156564632022-10-01 23:05:5910 hrs 10 mins ago0x9304b8cbdc7499bd93cfda6ae74478d528ec9090 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00028059 6.08116644
0xe9ef0274b5713ac2acd296503c0785bfcba97f91d8ac7bc6c62eabb68f6ac8bbSet Approval For...156549472022-10-01 17:59:2315 hrs 17 mins ago0x747f17f1020be2e28b5d419d242eb2c8f54c5603 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.0004315 9.3519654
0xfcf12fb0b17167282a30193a2d2d5d48c98f1b8dcca8e0b6cde0b1369fe3248eSet Approval For...156524162022-10-01 9:28:2323 hrs 48 mins ago0xa70e32b0cfe4c789f4ac392c836c9feaf120a246 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00030727 6.65949649
0xf2919d1559d7ee001ea6d0e4a55b32d744fd07549e0c546266af35cf8bd9886eSet Approval For...156507502022-10-01 3:53:231 day 5 hrs ago0x58105b41af2e0c759108c5ab1b03bd498d1de7ac IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00033489 7.25814779
0x4e38cbfdd4439734173eb68c0e201789b6893aaf1744c10dfcb80052a4f3d59aSafe Transfer Fr...156506002022-10-01 3:23:111 day 5 hrs agoENS Name siling.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00037004 7.68412609
0x40a46fae6cad1794fc3d06635a4d4e0e9c8c3084ef1945f042dfaa9fd45a989cSafe Transfer Fr...156502602022-10-01 2:14:231 day 7 hrs agoENS Name frowny.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.0005394511.202
0x88c690e498f576518cee315959e2588d5b54f485e5c172543519570d41598dceSafe Transfer Fr...156502562022-10-01 2:13:231 day 7 hrs agoENS Name frowny.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.0007608911.66
0xea3f73173911027710e97e67535e615b8a225b3e5aa548083d32d7f32aacde57Safe Transfer Fr...156493692022-09-30 23:14:591 day 10 hrs ago0x32fc37ec90c8ef624e515a6b197ae16965503199 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00059442 9.83218769
0x2ff4de0dbe8c260a59f277167dcdddf2667441546f113f828eb21944c03e1757Set Approval For...156478982022-09-30 18:19:231 day 14 hrs ago0xa5ffeca4379d172d19641e118dd2f481874ea9e4 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00088761 19.2021355
0x485f63db94aa5446c3723b3ad3d12f40449fe0ff390c1769ae8352ccc2a0ff42Set Approval For...156474992022-09-30 16:59:231 day 16 hrs ago0x36d7e86212eff3837671ddb76f5111a4e5fe6f9f IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00104744 22.65973701
0xb77b640cf876fed34ea5f03d8a2642be358311f4fd4ed6b8043dc4774b396c4bSet Approval For...156473732022-09-30 16:33:591 day 16 hrs ago0xe5fb1748d56226005a0e2ac0e95712619b141a69 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00103995 22.53872157
0x3ab3c1114105fb859141bd47ffb66f50e17551b46833cad0796db247f9246d98Set Approval For...156467882022-09-30 14:35:591 day 18 hrs ago0x5d0069e4bd2d365528141d82f42c27700756fbc6 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00083549 18.10744454
0xcff71a4b932d293f21b705f3b0d2bf132cffb6c8237aaf43dd97e85452582867Set Approval For...156459472022-09-30 11:46:591 day 21 hrs agoENS Name 193943.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.0004444 9.63146311
0xc330766e9c73e222e849cbc7931143a1292b6698b8435d934288f7a55cf3f940Set Approval For...156447392022-09-30 7:43:592 days 1 hr ago0x055948f72297ed3b34a97dc35fa47b318cc7514b IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00048673 10.54894122
0xf3a449957514d80e7f9c3de0daa75efdf4e4d89f59d403ac46cd739998486488Set Approval For...156440752022-09-30 5:30:232 days 3 hrs ago0x4fcf3a3507a6a998f363679a29240578ce85d0f3 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00052154 11.30332876
0x406ef94fd46f534f9d8045ece57a8a7413a7514f759b397b4b75ae03a77b03f4Set Approval For...156434822022-09-30 3:31:352 days 5 hrs ago0x89d0f25aeeac1183e34903e3d47e4964903aa8d5 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00114922 24.90678732
0xb260f68b1067b7ba4449ceb5b033c0abcfca2feb4b0be9161e9b78cc6bf45817Set Approval For...156418272022-09-29 21:58:232 days 11 hrs ago0xbdaa4fb29a4ef897c417b0a176dfb8c651c9d32d IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00069694 15.10457905
0x1ea4ec98e837c792bb3a0d77aefbee8a6b683806e87e60f38d877bd01cb3c123Set Approval For...156416112022-09-29 21:14:232 days 12 hrs ago0x419281ec1d4e88bc9b1cac54aee1578f108f7d5c IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00062587 13.56429421
0xa93ae908b39b93c9d5c07be9db7a14081e85e5064469b84288724724fc13e05eSafe Transfer Fr...156393602022-09-29 13:40:352 days 19 hrs agoENS Name williechang.eth IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00079596 16.52864432
0xb0960513542c6d673e618017e59d813f6177bde9dbb0bebff9dde041e329aa38Safe Transfer Fr...156368742022-09-29 5:19:593 days 3 hrs ago0x1fe03a391c9486a889e0b5b19195f916bef19468 IN  0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460 Ether0.00040932 9.44076206
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0x74c0d5d3b66a4d8b9a2e51827e170d95a37b182e5e5f81acb5c2196acf12928f143459242022-03-08 11:29:09207 days 21 hrs ago 0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460xf8346c663ddf9a8b1afdcc3bf53a6a8845b1b55a0.296 Ether
0xe471eeb507ccc75197aee35180a4432288daa55e011d10ece18a2ee2b5b6f56a141959142022-02-13 5:40:09231 days 3 hrs ago 0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460xf8346c663ddf9a8b1afdcc3bf53a6a8845b1b55a1,795.833 Ether
0x218d1e59ed0b4aa0d30110ff72640aa48b11318d078095dad0e0dd71a244b278141923732022-02-12 16:36:06231 days 16 hrs ago 0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460xf8346c663ddf9a8b1afdcc3bf53a6a8845b1b55a1,390.404 Ether
0x2827acc487fb9ab8305b18d1cb8e3589638f6239798610c1e362df0b96d60ce5141820742022-02-11 2:31:55233 days 6 hrs ago 0xe39fb076bd6be0bbf400db0dfad28104fdc5ff460xf8346c663ddf9a8b1afdcc3bf53a6a8845b1b55a0.296 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
Alpacadabraz_3D

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, GNU GPLv3 license
File 1 of 12 : Alpacadabraz_3D.sol
// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.9;

import "Ownable.sol";
import "ERC721.sol";
import "MerkleProof.sol";

contract Alpacadabraz_3D is ERC721, Ownable {

    bytes32 public merkleRoot = ""; // Construct this from (address, amount) tuple elements for whitelisted mints
    bytes32 public freeMintMerkleRoot = ""; // Construct this from (address, amount) tuple elements for free mints
    mapping(address => uint) public whitelistRemaining; // Maps user address to their remaining mints if they have minted some but not all of their allocation
    mapping(address => bool) public whitelistUsed; // Maps user address to bool, true if user has minted
    mapping(address => uint) public freeMintsRemaining; // Maps user address to their remaining free mints if they have minted some but not all of their allocation
    mapping(address => bool) public freeMintUsed; // Maps user address to bool, true if user has used a free mint

    uint public mintPrice = 0.296 ether;
    uint public whitelistPrice = 0.96 ether;
    uint public maxItems = 19969;
    uint public totalSupply = 0;
    uint public maxPublicMint = 4700;
    uint public publicMinted = 0;
    uint public maxItemsPerTx = 50;
    uint public maxItemsPerPublicMint = 10;
    address public recipient;
    string public _baseTokenURI;
    uint public startTimestamp;

    event Mint(address indexed owner, uint indexed tokenId);

    constructor(address _recipient) ERC721("ALPACADABRAZ 3D", "PACA 3D") {
        recipient = _recipient;
    }

    modifier mintingOpen() {
        require(startTimestamp != 0, "Start timestamp not set");
        require(block.timestamp >= startTimestamp, "Not open yet");
        _;
    }

    function ownerMint(uint amount) external onlyOwner {
        _mintWithoutValidation(msg.sender, amount);
    }

    function publicMint(uint amount) external payable mintingOpen {
        // Require nonzero amount
        require(amount > 0, "Can't mint zero");

        // Check proper amount sent
        require(msg.value == amount * mintPrice, "Send proper ETH amount");

        // Check max items per public mint
        require(amount <= maxItemsPerPublicMint, "publicMint: Surpasses maxItemsPerPublicMint");

        // Check public mint supply cap
        require(publicMinted + amount <= maxPublicMint, "publicMint: Sold out");
        publicMinted += amount;

        _mintWithoutValidation(msg.sender, amount);
    }

    function whitelistMint(uint amount, uint totalAllocation, bytes32 leaf, bytes32[] memory proof) external payable mintingOpen {
        // Verify that (leaf, proof) matches the Merkle root
        require(verify(merkleRoot, leaf, proof), "Not a valid leaf in the Merkle tree");

        // Verify that (msg.sender, amount) correspond to Merkle leaf
        require(keccak256(abi.encodePacked(msg.sender, totalAllocation)) == leaf, "Sender and amount don't match Merkle leaf");

        // Create storage element tracking user mints if this is the first mint for them
        if (!whitelistUsed[msg.sender]) {
            whitelistUsed[msg.sender] = true;
            whitelistRemaining[msg.sender] = totalAllocation;
        } else if (whitelistRemaining[msg.sender] > totalAllocation){
            whitelistRemaining[msg.sender] = totalAllocation;
        }

        // Require nonzero amount
        require(amount > 0, "Can't mint zero");

        // Check proper amount sent
        require(msg.value == amount * whitelistPrice, "Send proper ETH amount");

        require(whitelistRemaining[msg.sender] >= amount, "Can't mint more than remaining allocation");

        whitelistRemaining[msg.sender] -= amount;
        _mintWithoutValidation(msg.sender, amount);
    }

    function freeMint(uint amount, uint totalAllocation, bytes32 leaf, bytes32[] memory proof) external payable {
        // Verify that (leaf, proof) matches the Merkle root
        require(verify(freeMintMerkleRoot, leaf, proof), "Not a valid leaf in the Merkle tree");

        // Verify that (msg.sender, amount) correspond to Merkle leaf
        require(keccak256(abi.encodePacked(msg.sender, totalAllocation)) == leaf, "Sender and amount don't match Merkle leaf");

        // Create storage element tracking user mints if this is the first mint for them
        if (!freeMintUsed[msg.sender]) {        
            freeMintUsed[msg.sender] = true;
            freeMintsRemaining[msg.sender] = totalAllocation;
        } else if (freeMintsRemaining[msg.sender] > totalAllocation){
            freeMintsRemaining[msg.sender] = totalAllocation;
        }

        // Require nonzero amount
        require(amount > 0, "Can't mint zero");

        // Check proper amount sent
        require(msg.value == 0, "Send proper ETH amount");

        require(freeMintsRemaining[msg.sender] >= amount, "Can't mint more than remaining allocation");

        freeMintsRemaining[msg.sender] -= amount;
        _mintWithoutValidation(msg.sender, amount);
    }

    function _mintWithoutValidation(address to, uint amount) internal {
        require(totalSupply + amount <= maxItems, "mintWithoutValidation: Sold out");
        require(amount <= maxItemsPerTx, "mintWithoutValidation: Surpasses maxItemsPerTx");
        for (uint i = 0; i < amount; i++) {
            _mint(to, totalSupply);
            emit Mint(to, totalSupply);
            totalSupply += 1;
        }
    }

    function verify(bytes32 root, bytes32 leaf, bytes32[] memory proof) public pure returns (bool) {
        return MerkleProof.verify(proof, root, leaf);
    }

    // ADMIN FUNCTIONALITY

    function setMintPrice(uint _mintPrice) external onlyOwner {
        mintPrice = _mintPrice;
    }

    function setWhitelistPrice(uint _whitelistPrice) external onlyOwner {
        whitelistPrice = _whitelistPrice;
    }

    function setMaxPublicMint(uint _maxPublicMint) external onlyOwner {
        maxPublicMint = _maxPublicMint;
    }

    function setRecipient(address _recipient) external onlyOwner {
        recipient = _recipient;
    }

    function setStartTimestamp(uint _startTimestamp) external onlyOwner {
        startTimestamp = _startTimestamp;
    }

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

    function setMerkleRoot(bytes32 _merkleRoot) public onlyOwner {
        merkleRoot = _merkleRoot;
    }

    function setFreeMintMerkleRoot(bytes32 _freeMintMerkleRoot) public onlyOwner {
        freeMintMerkleRoot = _freeMintMerkleRoot;
    }

    // WITHDRAWAL FUNCTIONALITY

    /**
     * @dev Withdraw the contract balance to the recipient address
     */
    function withdraw() external {
        uint amount = address(this).balance;
        (bool success,) = recipient.call{value: amount}("");
        require(success, "Failed to send ether");
    }

    // METADATA FUNCTIONALITY

    /**
     * @dev Returns a URI for a given token ID's metadata
     */
    function tokenURI(uint256 _tokenId) public view override returns (string memory) {
        return string(abi.encodePacked(_baseTokenURI, Strings.toString(_tokenId)));
    }

}

File 2 of 12 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

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() {
        _transferOwnership(_msgSender());
    }

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

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

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

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

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

File 3 of 12 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

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

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

File 4 of 12 : ERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)

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}.
 */
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 {
        _setApprovalForAll(_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 Approve `operator` to operate on all of `owner` tokens
     *
     * Emits a {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @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 5 of 12 : IERC721.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)

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 6 of 12 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

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

File 7 of 12 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

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

File 8 of 12 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

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 9 of 12 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

File 10 of 12 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

File 11 of 12 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "IERC165.sol";

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

File 12 of 12 : MerkleProof.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/MerkleProof.sol)

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Trees proofs.
 *
 * The proofs can be generated using the JavaScript library
 * https://github.com/miguelmota/merkletreejs[merkletreejs].
 * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
 *
 * See `test/utils/cryptography/MerkleProof.test.js` for some examples.
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(
        bytes32[] memory proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProof(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up
     * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
     * hash matches the root of the tree. When processing the proof, the pairs
     * of leafs & pre-images are assumed to be sorted.
     *
     * _Available since v4.4._
     */
    function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];
            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
            }
        }
        return computedHash;
    }
}

Settings
{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "libraries": {
    "Alpacadabraz_3D.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

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,{"inputs":[],"name":"publicMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"recipient","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":"__baseTokenURI","type":"string"}],"name":"setBaseTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_freeMintMerkleRoot","type":"bytes32"}],"name":"setFreeMintMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxPublicMint","type":"uint256"}],"name":"setMaxPublicMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"}],"name":"setMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_mintPrice","type":"uint256"}],"name":"setMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"}],"name":"setRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_startTimestamp","type":"uint256"}],"name":"setStartTimestamp","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_whitelistPrice","type":"uint256"}],"name":"setWhitelistPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"root","type":"bytes32"},{"internalType":"bytes32","name":"leaf","type":"bytes32"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"verify","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"totalAllocation","type":"uint256"},{"internalType":"bytes32","name":"leaf","type":"bytes32"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"whitelistMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"whitelistPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistRemaining","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistUsed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","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)

000000000000000000000000f8346c663ddf9a8b1afdcc3bf53a6a8845b1b55a

-----Decoded View---------------
Arg [0] : _recipient (address): 0xf8346c663dDF9A8b1aFDcC3BF53A6A8845B1b55A

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000f8346c663ddf9a8b1afdcc3bf53a6a8845b1b55a


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.