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// ╚═╝  ╚═╝╚═╝  ╚═══╝ ╚═════╝    ╚═╝   ╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝╚═════╝ ╚══════╝ ╚═════╝  ╚═════╝╚═╝  ╚═╝
//
/**
 * @title Another721
 * @author Anotherblock Technical Team
 * @notice Anotherblock NFT contract
 **/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import './ERC721AB.sol';

contract Another721 is ERC721AB {
    // Base Token URI
    string private baseTokenURI;

    /**
     * @notice
     *  Another721 contract constructor
     *
     * @param _anotherblock : Anotherblock contract address
     * @param _baseUri : base token URI
     * @param _name : name of the NFT contract
     * @param _symbol : symbol / ticker of the NFT contract
     **/
    constructor(
        address _anotherblock,
        string memory _baseUri,
        string memory _name,
        string memory _symbol
    ) ERC721AB(_anotherblock, _name, _symbol) {
        // Sets the base token URI
        baseTokenURI = _baseUri;
    }

    //     ______     __                        __   ______                 __  _
    //    / ____/  __/ /____  _________  ____ _/ /  / ____/_  ______  _____/ /_(_)___  ____  _____
    //   / __/ | |/_/ __/ _ \/ ___/ __ \/ __ `/ /  / /_  / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/
    //  / /____>  </ /_/  __/ /  / / / / /_/ / /  / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__  )
    // /_____/_/|_|\__/\___/_/  /_/ /_/\__,_/_/  /_/    \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/

    /**
     * @notice
     *  Let a whitelisted user mint `_quantity` token(s) of the given `_dropId`
     *
     * @param _to : address to receive the token
     * @param _dropId : drop identifier
     * @param _quantity : amount of tokens to be minted
     * @param _proof : merkle tree proof used to verify whitelisted user
     */
    function mint(
        address _to,
        uint256 _dropId,
        uint256 _quantity,
        bytes32[] memory _proof
    ) external payable {
        _mintAB(_to, _dropId, _quantity, _proof);
    }

    /**
     * @notice
     *  Let a user mint `_quantity` token(s) of the given `_dropId`
     *
     * @param _userWallet : address to receive the token
     * @param _quantity : amount of tokens to be minted
     * @param _tokenId : drop identifier
     */
    function claimTo(
        address _userWallet,
        uint256 _quantity,
        uint256 _tokenId
    ) external payable {
        bytes32[] memory emptyBytes;

        _mintAB(_userWallet, _tokenId, _quantity, emptyBytes);
    }

    /**
     * @notice
     *  Returns the remaining supply for a given `_dropId`
     *
     * @param _tokenId : drop identifier
     * @return unclaimedSupply : the remaining supply to be minted for `_dropId`
     */
    function unclaimedSupply(uint256 _tokenId) public view returns (uint256) {
        IABDropManager.Drop memory drop = IABDropManager(anotherblock).drops(
            _tokenId
        );

        return drop.tokenInfo.supply - drop.sold;
    }

    /**
     * @notice
     *  Returns the mint price for a given `_dropId`
     *
     * @param _tokenId : drop identifier
     * @return price : the mint price for `_dropId`
     */
    function price(uint256 _tokenId) public view returns (uint256) {
        IABDropManager.Drop memory drop = IABDropManager(anotherblock).drops(
            _tokenId
        );
        return drop.tokenInfo.price;
    }

    /**
     * @notice
     *  Returns the reason why `_to` cannot mint `_quantity` token from `_dropId`
     *
     * @param _userWallet : wallet to receive the minted NFT(s)
     * @param _quantity : quantity to be minted
     * @param _tokenId : drop identifier
     * @return reason : the reason why the user cannot mint
     */
    function getClaimIneligibilityReason(
        address _userWallet,
        uint256 _quantity,
        uint256 _tokenId
    ) public view returns (string memory) {
        IABDropManager.Drop memory drop = IABDropManager(anotherblock).drops(
            _tokenId
        );

        // Check if the drop is not sold-out
        if (drop.sold == drop.tokenInfo.supply) return 'DropSoldOut';

        // Check that the whitelisted sale started
        if (block.timestamp < drop.salesInfo.privateSaleTime)
            return 'SaleNotStarted';

        // Check that there are enough tokens available for sale
        if (drop.sold + _quantity > drop.tokenInfo.supply)
            return 'NotEnoughTokensAvailable';

        if (
            drop.merkleRoot != 0x0 &&
            block.timestamp < drop.salesInfo.publicSaleTime
        ) {
            // Check that user did not mint the maximum amount per address for the private sale
            if (
                mintedPerDropPrivateSale[drop.dropId][_userWallet] + _quantity >
                drop.salesInfo.privateSaleMaxMint
            ) return 'MaxMintPerAddress';
        } else {
            // Check that user did not mint the maximum amount per address for the public sale
            if (
                mintedPerDropPublicSale[drop.dropId][_userWallet] + _quantity >
                drop.salesInfo.publicSaleMaxMint
            ) return 'MaxMintPerAddress';
        }
        return '';
    }

    /**
     * @notice
     *  Withdraw mint proceeds to Anotherblock Treasury address
     *
     */
    function withdrawAll() external {
        payable(IABDropManager(anotherblock).treasury()).transfer(
            address(this).balance
        );
    }

    //
    //     ____        __         ____                              ______                 __  _
    //    / __ \____  / /_  __   / __ \_      ______  ___  _____   / ____/_  ______  _____/ /_(_)___  ____  _____
    //   / / / / __ \/ / / / /  / / / / | /| / / __ \/ _ \/ ___/  / /_  / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/
    //  / /_/ / / / / / /_/ /  / /_/ /| |/ |/ / / / /  __/ /     / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__  )
    //  \____/_/ /_/_/\__, /   \____/ |__/|__/_/ /_/\___/_/     /_/    \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/
    //               /____/

    /**
     * @notice
     *  Update the Base URI
     *  Only the contract owner can perform this operation
     *
     * @param _newBaseURI : new base URI
     */
    function setBaseURI(string calldata _newBaseURI) external onlyOwner {
        baseTokenURI = _newBaseURI;
    }

    //     ____      __                        __   ______                 __  _
    //    /  _/___  / /____  _________  ____ _/ /  / ____/_  ______  _____/ /_(_)___  ____  _____
    //    / // __ \/ __/ _ \/ ___/ __ \/ __ `/ /  / /_  / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/
    //  _/ // / / / /_/  __/ /  / / / / /_/ / /  / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__  )
    // /___/_/ /_/\__/\___/_/  /_/ /_/\__,_/_/  /_/    \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/

    /**
     * @notice
     *  Returns the base URI
     *
     * @return baseTokenURI base token URI state
     */
    function _baseURI() internal view virtual override returns (string memory) {
        return baseTokenURI;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import './interfaces/IABDropManager.sol';
import './interfaces/IERC721AB.sol';
import './ERC721ABErrors.sol';

import '@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol';
import '@openzeppelin/contracts/utils/introspection/ERC165Checker.sol';
import '@openzeppelin/contracts/utils/introspection/ERC165Storage.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import {MerkleProof} from '@openzeppelin/contracts/utils/cryptography/MerkleProof.sol';

contract ERC721AB is ERC721Enumerable, ERC721ABErrors, ERC165Storage, Ownable {
    // AnotherblockV1 address
    address public anotherblock;

    // Denominator used to calculate fees
    uint256 private constant DENOMINATOR = 1e6;

    // Stores the drop ID for a given Token ID
    mapping(uint256 => uint256) public dropIdPerToken;

    // Stores the amounts of tokens minted per address and per drop for the public sale
    mapping(uint256 => mapping(address => uint256))
        public mintedPerDropPublicSale;

    // Stores the amounts of tokens minted per address and per drop for the private sale
    mapping(uint256 => mapping(address => uint256))
        public mintedPerDropPrivateSale;

    /**
     * @notice
     *  ERC721AB contract constructor
     *
     * @param _anotherblock : Anotherblock contract address
     * @param _name : name of the NFT contract
     * @param _symbol : symbol / ticker of the NFT contract
     **/
    constructor(
        address _anotherblock,
        string memory _name,
        string memory _symbol
    ) ERC721(_name, _symbol) {
        // Check that _anotherblock address matches IABDropManager interface
        if (
            !ERC165Checker.supportsInterface(
                _anotherblock,
                type(IABDropManager).interfaceId
            )
        ) revert IncorrectInterface();
        anotherblock = _anotherblock;

        // Grant the DEFAULT_ADMIN_ROLE to the contract deployer
        _registerInterface(type(IERC721AB).interfaceId);
    }

    //     ______     __                        __   ______                 __  _
    //    / ____/  __/ /____  _________  ____ _/ /  / ____/_  ______  _____/ /_(_)___  ____  _____
    //   / __/ | |/_/ __/ _ \/ ___/ __ \/ __ `/ /  / /_  / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/
    //  / /____>  </ /_/  __/ /  / / / / /_/ / /  / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__  )
    // /_____/_/|_|\__/\___/_/  /_/ /_/\__,_/_/  /_/    \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/

    /**
     * @notice
     *  Return an array containing the token IDs owned by the given address
     *
     * @param _owner : owner address
     * @return result : array containing all the token IDs owned by `_owner`
     */
    function tokensOfOwner(address _owner)
        external
        view
        returns (uint256[] memory)
    {
        uint256 tokenCount = balanceOf(_owner);
        // If _owner doesnt own any tokens, return an empty array
        if (tokenCount == 0) {
            return new uint256[](0);
        } else {
            uint256[] memory result = new uint256[](tokenCount);
            for (uint256 index = 0; index < tokenCount; ++index) {
                result[index] = tokenOfOwnerByIndex(_owner, index);
            }
            return result;
        }
    }

    /**
     * @dev See {ERC721-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(ERC721Enumerable, ERC165Storage)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }

    //
    //     ____        __         ____                              ______                 __  _
    //    / __ \____  / /_  __   / __ \_      ______  ___  _____   / ____/_  ______  _____/ /_(_)___  ____  _____
    //   / / / / __ \/ / / / /  / / / / | /| / / __ \/ _ \/ ___/  / /_  / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/
    //  / /_/ / / / / / /_/ /  / /_/ /| |/ |/ / / / /  __/ /     / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__  )
    //  \____/_/ /_/_/\__, /   \____/ |__/|__/_/ /_/\___/_/     /_/    \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/
    //               /____/

    /**
     * @notice
     *  Update anotherblock address
     *  Only the contract owner can perform this operation
     *
     * @param _anotherblock : new anotherblock address
     */
    function setAnotherblock(address _anotherblock) external onlyOwner {
        // Check that the new address corresponds to IABDropManager interface
        if (
            !ERC165Checker.supportsInterface(
                _anotherblock,
                type(IABDropManager).interfaceId
            )
        ) revert IncorrectInterface();
        anotherblock = _anotherblock;
    }

    //     ____      __                        __   ______                 __  _
    //    /  _/___  / /____  _________  ____ _/ /  / ____/_  ______  _____/ /_(_)___  ____  _____
    //    / // __ \/ __/ _ \/ ___/ __ \/ __ `/ /  / /_  / / / / __ \/ ___/ __/ / __ \/ __ \/ ___/
    //  _/ // / / / /_/  __/ /  / / / / /_/ / /  / __/ / /_/ / / / / /__/ /_/ / /_/ / / / (__  )
    // /___/_/ /_/\__/\___/_/  /_/ /_/\__,_/_/  /_/    \__,_/_/ /_/\___/\__/_/\____/_/ /_/____/

    /**
     * @notice
     *  Let a whitelisted user mint `_quantity` token(s) of the given `_dropId`
     *
     * @param _dropId : drop identifier
     * @param _quantity : amount of tokens to be minted
     * @param _proof : merkle tree proof used to verify whitelisted user
     */
    function _mintAB(
        address _to,
        uint256 _dropId,
        uint256 _quantity,
        bytes32[] memory _proof
    ) internal virtual {
        IABDropManager.Drop memory drop = IABDropManager(anotherblock).drops(
            _dropId
        );

        // Check if the drop is not sold-out
        if (drop.sold == drop.tokenInfo.supply) revert DropSoldOut();

        // Check that the whitelisted sale started
        if (block.timestamp < drop.salesInfo.privateSaleTime)
            revert SaleNotStarted();

        // Check that there are enough tokens available for sale
        if (drop.sold + _quantity > drop.tokenInfo.supply)
            revert NotEnoughTokensAvailable();

        // Check that user is sending the correct amount of ETH (will revert if user send too much or not enough)
        if (msg.value != drop.tokenInfo.price * _quantity)
            revert IncorrectETHSent();

        // Check that user is whitelisted in case the public sale did not start yet
        if (
            drop.merkleRoot != 0x0 &&
            block.timestamp < drop.salesInfo.publicSaleTime
        ) {
            // Check that user did not mint the maximum amount per address for the private sale
            if (
                mintedPerDropPrivateSale[drop.dropId][_to] + _quantity >
                drop.salesInfo.privateSaleMaxMint
            ) revert MaxMintPerAddress();

            bool isWhitelisted = MerkleProof.verify(
                _proof,
                drop.merkleRoot,
                keccak256(abi.encodePacked(_to))
            );

            // Revert if user is not whitelisted
            if (!isWhitelisted) {
                revert NotInMerkle();
            }

            mintedPerDropPrivateSale[drop.dropId][_to] += _quantity;
        } else {
            // Check that user did not mint the maximum amount per address for the public sale
            if (
                mintedPerDropPublicSale[drop.dropId][_to] + _quantity >
                drop.salesInfo.publicSaleMaxMint
            ) revert MaxMintPerAddress();
            mintedPerDropPublicSale[drop.dropId][_to] += _quantity;
        }

        uint256 currentDropTokenIndex = drop.firstTokenIndex + drop.sold;
        for (uint256 i = 0; i < _quantity; ++i) {
            dropIdPerToken[currentDropTokenIndex + i] = drop.dropId;
            _safeMint(_to, currentDropTokenIndex + i);
        }

        IABDropManager(anotherblock).updateDropCounter(_dropId, _quantity);

        // Send Right Holder Fee to the owner address
        if (msg.value > 0) {
            uint256 feeToRightHolder = (msg.value * drop.rightHolderFee) /
                DENOMINATOR;
            if (feeToRightHolder > 0) {
                payable(drop.owner).transfer(feeToRightHolder);
            }
        }
    }

    /**
     * @dev See {ERC721Enumerable-beforeTokenTransfer}.
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal override(ERC721Enumerable) {
        super._beforeTokenTransfer(from, to, tokenId);
    }
}

//                            ██████████████████████████████████
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//                            ██████████████████████████████████    
//                            ████████████████████████          ██████████        
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//                            ████████████████████████          ██████████        
//                            ████████████████████████          ██████████        
//                                                    ████████████████████ 
//                                                    ████████████████████ 
//                                                    ████████████████████            
//                                                    ████████████████████
//
//
//  █████╗ ███╗   ██╗ ██████╗ ████████╗██╗  ██╗███████╗██████╗ ██████╗ ██╗      ██████╗  ██████╗██╗  ██╗
// ██╔══██╗████╗  ██║██╔═══██╗╚══██╔══╝██║  ██║██╔════╝██╔══██╗██╔══██╗██║     ██╔═══██╗██╔════╝██║ ██╔╝
// ███████║██╔██╗ ██║██║   ██║   ██║   ███████║█████╗  ██████╔╝██████╔╝██║     ██║   ██║██║     █████╔╝ 
// ██╔══██║██║╚██╗██║██║   ██║   ██║   ██╔══██║██╔══╝  ██╔══██╗██╔══██╗██║     ██║   ██║██║     ██╔═██╗ 
// ██║  ██║██║ ╚████║╚██████╔╝   ██║   ██║  ██║███████╗██║  ██║██████╔╝███████╗╚██████╔╝╚██████╗██║  ██╗
// ╚═╝  ╚═╝╚═╝  ╚═══╝ ╚═════╝    ╚═╝   ╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝╚═════╝ ╚══════╝ ╚═════╝  ╚═════╝╚═╝  ╚═╝                                                                                             
//
/**
 * @title IABDropManager
 * @author Anotherblock Technical Team
 * @notice ABDropManager Interface
 **/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface IABDropManager {
    /**
     * @notice
     *  Drop Structure format
     *
     * @param dropId : drop unique identifier
     * @param sold : total number of sold tokens for this drop (accross all associated tokenId)
     * @param rightHolderFee : right Holder fee on each mint expressed in basis point
     * @param firstTokenIndex : TokenId at which this drop starts
     * @param salesInfo : Sale Info struct defining the private and public sales opening date
     * @param tokenInfo : Token Info struct defining the token information (see TokenInfo structure)
     * @param currencyPayout : address of the currency used for the royalty payout (zero-address if ETH)
     * @param owner : right holder address
     * @param nft :  NFT contract address
     * @param merkleRoot : merkle tree root used for whitelist
     */
    struct Drop {
        uint256 dropId;
        uint256 sold;
        uint256 rightHolderFee;
        uint256 firstTokenIndex;
        TokenInfo tokenInfo;
        SaleInfo salesInfo;
        address currencyPayout;
        address owner;
        address nft;
        bytes32 merkleRoot;
    }

    /**
     * @notice
     *  TokenInfo Structure format
     *
     * @param price : initial price in ETH(?) of 1 token
     * @param supply : total number of tokens for this drop (accross all associated tokenId)
     * @param royaltySharePerToken : total percentage of royalty evenly distributed among tokens holders
     */
    struct TokenInfo {
        uint256 price;
        uint256 supply;
        uint256 royaltySharePerToken;
    }

    /**
     * @notice
     *  SaleInfo Structure format
     *
     * @param privateSaleMaxMint : Maximum number of token to be minted per address for the private sale
     * @param privateSaleTime : timestamp at which the private sale is opened
     * @param publicSaleMaxMint : Maximum number of token to be minted per address for the public sale
     * @param publicSaleTime : timestamp at which the public sale is opened
     */
    struct SaleInfo {
        uint256 privateSaleMaxMint;
        uint256 privateSaleTime;
        uint256 publicSaleMaxMint;
        uint256 publicSaleTime;
    }

    /**
     * @notice
     *  Returns Anotherblock Treasury address
     *
     */
    function treasury() external view returns (address);

    /**
     * @notice
     *  Returns the drop `_dropId`
     *
     * @param _dropId : drop identifier
     */
    function drops(uint256 _dropId) external view returns (Drop memory);

    /**
     * @notice
     *  Create a Drop
     *
     * @param _owner : right holder address
     * @param _nft : NFT contract address
     * @param _price : initial price in ETH(?) of 1 NFT
     * @param _supply : total number of NFT for this drop (accross all associated tokenId)
     * @param _royaltySharePerToken : total percentage of royalty evenly distributed among NFT holders
     * @param _rightHolderFee : right Holder fee on each mint expressed in basis point
     * @param _maxAmountPerAddress : Maximum number of token to be minted per address
     * @param _salesInfo : Array of Timestamps at which the private and public sales are opened (in seconds)
     * @param _merkle : merkle tree root used for whitelist
     */
    function create(
        address _owner,
        address _nft,
        uint256 _price,
        uint256 _supply,
        uint256 _royaltySharePerToken,
        uint256 _rightHolderFee,
        uint256 _maxAmountPerAddress,
        uint256[2] calldata _salesInfo,
        bytes32 _merkle
    ) external;

    function updateDropCounter(uint256 _dropId, uint256 _quantity) external;

    /**
     * @notice
     *  Update the treasury address
     *  Only the contract owner can perform this operation
     *
     * @param _newTreasury : new treasury address
     */
    function setTreasury(address _newTreasury) external;

    /**
     * @notice
     *  Update the Drop `_dropId` sale information
     *  Only the contract owner can perform this operation
     *
     * @param _dropId :  drop identifier of the drop to be updated
     * @param _saleInfo : array containing the new informations to be updated
     */
    function setSalesInfo(uint256 _dropId, uint256[4] calldata _saleInfo)
        external;

    /**
     * @notice
     *  Update the Drop `_dropId` drop information
     *  Only the contract owner can perform this operation
     *
     * @param _dropId :  drop identifier of the drop to be updated
     * @param _rightHolderFee : fees paid to right holder
     * @param _owner : right holder address
     */
    function setRightHolderInfo(
        uint256 _dropId,
        uint256 _rightHolderFee,
        address _owner
    ) external;

    /**
     * @notice
     *  Update the Drop `_dropId` token information
     *  Only the contract owner can perform this operation
     *
     *  Return true if `tokenCount` and `supply` are updated, false otherwise
     *
     * @param _dropId :  drop identifier of the drop to be updated
     * @param _tokenInfo : array containing the new informations to be updated
     */
    function setTokenInfo(uint256 _dropId, uint256[3] calldata _tokenInfo)
        external
        returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface IERC721AB {
    /**
     * @notice
     *  Update anotherblock address
     *  Revoke the AB_ROLE from the previous anotherblock address
     *  Grant the AB_ROLE role to the new address
     *  Only DEFAULT_ADMIN_ROLE can perform this operation
     *
     * @param _anotherblock : new anotherblock address
     */
    function setAnotherblock(address _anotherblock) external;

    /**
     * @notice
     *  Return an array containing the token IDs owned by the given address
     *
     * @param _owner : owner address
     * @return result : array containing all the token IDs owned by `_owner`
     */
    function tokensOfOwner(address _owner)
        external
        view
        returns (uint256[] memory);
}

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//
//  █████╗ ███╗   ██╗ ██████╗ ████████╗██╗  ██╗███████╗██████╗ ██████╗ ██╗      ██████╗  ██████╗██╗  ██╗
// ██╔══██╗████╗  ██║██╔═══██╗╚══██╔══╝██║  ██║██╔════╝██╔══██╗██╔══██╗██║     ██╔═══██╗██╔════╝██║ ██╔╝
// ███████║██╔██╗ ██║██║   ██║   ██║   ███████║█████╗  ██████╔╝██████╔╝██║     ██║   ██║██║     █████╔╝ 
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// ╚═╝  ╚═╝╚═╝  ╚═══╝ ╚═════╝    ╚═╝   ╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝╚═════╝ ╚══════╝ ╚═════╝  ╚═════╝╚═╝  ╚═╝                                                                                             
//
/**
 * @title ERC721ABErrors
 * @author Anotherblock Technical Team
 * @notice ERC721AB Custom Errors contract
 **/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

contract ERC721ABErrors {
    /**
    @notice Error returned if the drop is sold-out
    **/
    error DropSoldOut();

    /**
    @notice Error returned if the whitelist sale has not started yet
    **/
    error SaleNotStarted();

    /**
    @notice Error returned if user attempt to mint more than allowed by the drop
    **/
    error MaxMintPerAddress();

    /**
    @notice Error returned if the supply is sold out
    **/
    error NotEnoughTokensAvailable();

    /**
    @notice Error returned if user did not send the correct amount of ETH
    **/
    error IncorrectETHSent();

    /**
    @notice Error returned if non-whitelisted user attempts to mint prior to public sale  
    **/
    error NotInMerkle();

    /**
    @notice Error returned if the contract passed as parameters does not implement the expected interface  
    **/
    error IncorrectInterface();

    /**
    @notice Error returned if there are no ETH to withdraw from the contract
    **/
    error NothingToWithdraw();
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

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

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @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 override {
        super._beforeTokenTransfer(from, to, tokenId);

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.2) (utils/introspection/ERC165Checker.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Library used to query support of an interface declared via {IERC165}.
 *
 * Note that these functions return the actual result of the query: they do not
 * `revert` if an interface is not supported. It is up to the caller to decide
 * what to do in these cases.
 */
library ERC165Checker {
    // As per the EIP-165 spec, no interface should ever match 0xffffffff
    bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;

    /**
     * @dev Returns true if `account` supports the {IERC165} interface,
     */
    function supportsERC165(address account) internal view returns (bool) {
        // Any contract that implements ERC165 must explicitly indicate support of
        // InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
        return
            _supportsERC165Interface(account, type(IERC165).interfaceId) &&
            !_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
    }

    /**
     * @dev Returns true if `account` supports the interface defined by
     * `interfaceId`. Support for {IERC165} itself is queried automatically.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
        // query support of both ERC165 as per the spec and support of _interfaceId
        return supportsERC165(account) && _supportsERC165Interface(account, interfaceId);
    }

    /**
     * @dev Returns a boolean array where each value corresponds to the
     * interfaces passed in and whether they're supported or not. This allows
     * you to batch check interfaces for a contract where your expectation
     * is that some interfaces may not be supported.
     *
     * See {IERC165-supportsInterface}.
     *
     * _Available since v3.4._
     */
    function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
        internal
        view
        returns (bool[] memory)
    {
        // an array of booleans corresponding to interfaceIds and whether they're supported or not
        bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);

        // query support of ERC165 itself
        if (supportsERC165(account)) {
            // query support of each interface in interfaceIds
            for (uint256 i = 0; i < interfaceIds.length; i++) {
                interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
            }
        }

        return interfaceIdsSupported;
    }

    /**
     * @dev Returns true if `account` supports all the interfaces defined in
     * `interfaceIds`. Support for {IERC165} itself is queried automatically.
     *
     * Batch-querying can lead to gas savings by skipping repeated checks for
     * {IERC165} support.
     *
     * See {IERC165-supportsInterface}.
     */
    function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
        // query support of ERC165 itself
        if (!supportsERC165(account)) {
            return false;
        }

        // query support of each interface in _interfaceIds
        for (uint256 i = 0; i < interfaceIds.length; i++) {
            if (!_supportsERC165Interface(account, interfaceIds[i])) {
                return false;
            }
        }

        // all interfaces supported
        return true;
    }

    /**
     * @notice Query if a contract implements an interface, does not check ERC165 support
     * @param account The address of the contract to query for support of an interface
     * @param interfaceId The interface identifier, as specified in ERC-165
     * @return true if the contract at account indicates support of the interface with
     * identifier interfaceId, false otherwise
     * @dev Assumes that account contains a contract that supports ERC165, otherwise
     * the behavior of this method is undefined. This precondition can be checked
     * with {supportsERC165}.
     * Interface identification is specified in ERC-165.
     */
    function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
        // prepare call
        bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);

        // perform static call
        bool success;
        uint256 returnSize;
        uint256 returnValue;
        assembly {
            success := staticcall(30000, account, add(encodedParams, 0x20), mload(encodedParams), 0x00, 0x20)
            returnSize := returndatasize()
            returnValue := mload(0x00)
        }

        return success && returnSize >= 0x20 && returnValue > 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Storage.sol)

pragma solidity ^0.8.0;

import "./ERC165.sol";

/**
 * @dev Storage based implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165Storage is ERC165 {
    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return super.supportsInterface(interfaceId) || _supportedInterfaces[interfaceId];
    }

    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        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);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev These functions deal with verification of Merkle Tree 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.
 *
 * WARNING: You should avoid using leaf values that are 64 bytes long prior to
 * hashing, or use a hash function other than keccak256 for hashing leaves.
 * This is because the concatenation of a sorted pair of internal nodes in
 * the merkle tree could be reinterpreted as a leaf value.
 */
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 Calldata version of {verify}
     *
     * _Available since v4.7._
     */
    function verifyCalldata(
        bytes32[] calldata proof,
        bytes32 root,
        bytes32 leaf
    ) internal pure returns (bool) {
        return processProofCalldata(proof, leaf) == root;
    }

    /**
     * @dev Returns the rebuilt hash obtained by traversing a Merkle 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++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Calldata version of {processProof}
     *
     * _Available since v4.7._
     */
    function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) {
        bytes32 computedHash = leaf;
        for (uint256 i = 0; i < proof.length; i++) {
            computedHash = _hashPair(computedHash, proof[i]);
        }
        return computedHash;
    }

    /**
     * @dev Returns true if the `leaves` can be proved to be a part of a Merkle tree defined by
     * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}.
     *
     * _Available since v4.7._
     */
    function multiProofVerify(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProof(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Calldata version of {multiProofVerify}
     *
     * _Available since v4.7._
     */
    function multiProofVerifyCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32 root,
        bytes32[] memory leaves
    ) internal pure returns (bool) {
        return processMultiProofCalldata(proof, proofFlags, leaves) == root;
    }

    /**
     * @dev Returns the root of a tree reconstructed from `leaves` and the sibling nodes in `proof`,
     * consuming from one or the other at each step according to the instructions given by
     * `proofFlags`.
     *
     * _Available since v4.7._
     */
    function processMultiProof(
        bytes32[] memory proof,
        bool[] memory proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    /**
     * @dev Calldata version of {processMultiProof}
     *
     * _Available since v4.7._
     */
    function processMultiProofCalldata(
        bytes32[] calldata proof,
        bool[] calldata proofFlags,
        bytes32[] memory leaves
    ) internal pure returns (bytes32 merkleRoot) {
        // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by
        // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the
        // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of
        // the merkle tree.
        uint256 leavesLen = leaves.length;
        uint256 totalHashes = proofFlags.length;

        // Check proof validity.
        require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof");

        // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using
        // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop".
        bytes32[] memory hashes = new bytes32[](totalHashes);
        uint256 leafPos = 0;
        uint256 hashPos = 0;
        uint256 proofPos = 0;
        // At each step, we compute the next hash using two values:
        // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we
        //   get the next hash.
        // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the
        //   `proof` array.
        for (uint256 i = 0; i < totalHashes; i++) {
            bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++];
            bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++];
            hashes[i] = _hashPair(a, b);
        }

        if (totalHashes > 0) {
            return hashes[totalHashes - 1];
        } else if (leavesLen > 0) {
            return leaves[0];
        } else {
            return proof[0];
        }
    }

    function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) {
        return a < b ? _efficientHash(a, b) : _efficientHash(b, a);
    }

    function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
        /// @solidity memory-safe-assembly
        assembly {
            mstore(0x00, a)
            mstore(0x20, b)
            value := keccak256(0x00, 0x40)
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)

pragma solidity ^0.8.0;

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

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: address zero is not a valid owner");
        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: invalid token ID");
        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) {
        _requireMinted(tokenId);

        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 overridden 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 token owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireMinted(tokenId);

        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: caller is not token 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: caller is not token 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) {
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == 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);

        _afterTokenTransfer(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);

        _afterTokenTransfer(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 from incorrect owner");
        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);

        _afterTokenTransfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {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 an {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 Reverts if the `tokenId` has not been minted yet.
     */
    function _requireMinted(uint256 tokenId) internal view virtual {
        require(_exists(tokenId), "ERC721: invalid token ID");
    }

    /**
     * @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 {
                    /// @solidity memory-safe-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` 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 {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * 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;

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// 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);
}

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

pragma solidity ^0.8.1;

/**
 * @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
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// 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;
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

import "./IERC165.sol";

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/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);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

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ty":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"_anotherblock","type":"address"}],"name":"setAnotherblock","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":"_newBaseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"tokensOfOwner","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"unclaimedSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdrawAll","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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-----Decoded View---------------
Arg [0] : _anotherblock (address): 0xEA143996DdFaF5f2318eEa25D311B5e6Bc8D912E
Arg [1] : _baseUri (string): https://metadata.anotherblock.io/
Arg [2] : _name (string): anotherblock
Arg [3] : _symbol (string): ABNFT

-----Encoded View---------------
11 Constructor Arguments found :
Arg [0] : 000000000000000000000000ea143996ddfaf5f2318eea25d311b5e6bc8d912e
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000021
Arg [5] : 68747470733a2f2f6d657461646174612e616e6f74686572626c6f636b2e696f
Arg [6] : 2f00000000000000000000000000000000000000000000000000000000000000
Arg [7] : 000000000000000000000000000000000000000000000000000000000000000c
Arg [8] : 616e6f74686572626c6f636b0000000000000000000000000000000000000000
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [10] : 41424e4654000000000000000000000000000000000000000000000000000000