Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.11;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "erc721a/contracts/ERC721A.sol";

contract BFParty is ERC721A, Ownable {
    using Strings for uint256;
    using ECDSA for bytes32;
    uint16 constant MAX_SUPPLY = 4444;

    mapping(address => uint256) public minted;

    address public signerAddress = 0x931A1Cf012d0c304C35E7F2BD27b4AeaB82C9F57;

    bool public publicMintEnabled=false;
    string public baseUri;

    constructor(string memory uri) ERC721A("BFParty", "BFP") {
        baseUri = uri;          
    }

    function setSignerAddress(address newAddress) external onlyOwner {
        signerAddress = newAddress;
    }

    function setBaseUri(string memory uri) external onlyOwner {
        baseUri = uri;
    }

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

    function _startTokenId() internal pure override returns (uint256) {
        return 1;
    }

    function togglePublicMint() external onlyOwner {
        publicMintEnabled=!publicMintEnabled;
    }

    //just in case of sending eth to this address by mistake.
    function withdraw() external onlyOwner {                
        (bool success, ) = owner().call{value: address(this).balance}("");        
        require(
            success,"withdrawal unsuccessful."
        );
    }

    function safeMint(address to, uint256 quantity) internal {
        require(quantity + totalSupply() <= MAX_SUPPLY, "Max supply exceeded.");
        _safeMint(to, quantity);
    }

    function ownerMint(address to, uint256 quantity) external onlyOwner {
        safeMint(to, quantity);
    }

    function hashTransaction(address sender)
        internal
        pure
        returns (bytes32)
    {
        bytes32 hash = keccak256(
            abi.encodePacked(
                "\x19Ethereum Signed Message:\n32",
                keccak256(abi.encodePacked(sender))
            )
        );
        return hash;
    }

    function publicMint() external        
    {
        require(publicMintEnabled,"public mint not enabled");
        require(minted[msg.sender]==0,"already minted");
        minted[msg.sender] += 1;
        safeMint(msg.sender, 1);
    }

    function whitelistMint(bytes memory signature) external{
        require(
            signerAddress ==
                hashTransaction(msg.sender).recover(signature),
            "Direct minting disallowed"
        );
        require(minted[msg.sender]==0,"already minted");
        minted[msg.sender] += 1;
        safeMint(msg.sender, 1);
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.1.0
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721A.sol';

/**
 * @dev ERC721 token receiver interface.
 */
interface ERC721A__IERC721Receiver {
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard,
 * including the Metadata extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at `_startTokenId()`
 * (defaults to 0, e.g. 0, 1, 2, 3..).
 *
 * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 *
 * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721A is IERC721A {
    // Mask of an entry in packed address data.
    uint256 private constant BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

    // The bit position of `numberMinted` in packed address data.
    uint256 private constant BITPOS_NUMBER_MINTED = 64;

    // The bit position of `numberBurned` in packed address data.
    uint256 private constant BITPOS_NUMBER_BURNED = 128;

    // The bit position of `aux` in packed address data.
    uint256 private constant BITPOS_AUX = 192;

    // Mask of all 256 bits in packed address data except the 64 bits for `aux`.
    uint256 private constant BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;

    // The bit position of `startTimestamp` in packed ownership.
    uint256 private constant BITPOS_START_TIMESTAMP = 160;

    // The bit mask of the `burned` bit in packed ownership.
    uint256 private constant BITMASK_BURNED = 1 << 224;

    // The bit position of the `nextInitialized` bit in packed ownership.
    uint256 private constant BITPOS_NEXT_INITIALIZED = 225;

    // The bit mask of the `nextInitialized` bit in packed ownership.
    uint256 private constant BITMASK_NEXT_INITIALIZED = 1 << 225;

    // The bit position of `extraData` in packed ownership.
    uint256 private constant BITPOS_EXTRA_DATA = 232;

    // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.
    uint256 private constant BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;

    // The mask of the lower 160 bits for addresses.
    uint256 private constant BITMASK_ADDRESS = (1 << 160) - 1;

    // The maximum `quantity` that can be minted with `_mintERC2309`.
    // This limit is to prevent overflows on the address data entries.
    // For a limit of 5000, a total of 3.689e15 calls to `_mintERC2309`
    // is required to cause an overflow, which is unrealistic.
    uint256 private constant MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;

    // The tokenId of the next token to be minted.
    uint256 private _currentIndex;

    // The number of tokens burned.
    uint256 private _burnCounter;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to ownership details
    // An empty struct value does not necessarily mean the token is unowned.
    // See `_packedOwnershipOf` implementation for details.
    //
    // Bits Layout:
    // - [0..159]   `addr`
    // - [160..223] `startTimestamp`
    // - [224]      `burned`
    // - [225]      `nextInitialized`
    // - [232..255] `extraData`
    mapping(uint256 => uint256) private _packedOwnerships;

    // Mapping owner address to address data.
    //
    // Bits Layout:
    // - [0..63]    `balance`
    // - [64..127]  `numberMinted`
    // - [128..191] `numberBurned`
    // - [192..255] `aux`
    mapping(address => uint256) private _packedAddressData;

    // 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;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _currentIndex = _startTokenId();
    }

    /**
     * @dev Returns the starting token ID.
     * To change the starting token ID, please override this function.
     */
    function _startTokenId() internal view virtual returns (uint256) {
        return 0;
    }

    /**
     * @dev Returns the next token ID to be minted.
     */
    function _nextTokenId() internal view returns (uint256) {
        return _currentIndex;
    }

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count.
     * To get the total number of tokens minted, please see `_totalMinted`.
     */
    function totalSupply() public view override returns (uint256) {
        // Counter underflow is impossible as _burnCounter cannot be incremented
        // more than `_currentIndex - _startTokenId()` times.
        unchecked {
            return _currentIndex - _burnCounter - _startTokenId();
        }
    }

    /**
     * @dev Returns the total amount of tokens minted in the contract.
     */
    function _totalMinted() internal view returns (uint256) {
        // Counter underflow is impossible as _currentIndex does not decrement,
        // and it is initialized to `_startTokenId()`
        unchecked {
            return _currentIndex - _startTokenId();
        }
    }

    /**
     * @dev Returns the total number of tokens burned.
     */
    function _totalBurned() internal view returns (uint256) {
        return _burnCounter;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        // The interface IDs are constants representing the first 4 bytes of the XOR of
        // all function selectors in the interface. See: https://eips.ethereum.org/EIPS/eip-165
        // e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`
        return
            interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
            interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
            interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return _packedAddressData[owner] & BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens minted by `owner`.
     */
    function _numberMinted(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> BITPOS_NUMBER_MINTED) & BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the number of tokens burned by or on behalf of `owner`.
     */
    function _numberBurned(address owner) internal view returns (uint256) {
        return (_packedAddressData[owner] >> BITPOS_NUMBER_BURNED) & BITMASK_ADDRESS_DATA_ENTRY;
    }

    /**
     * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
     */
    function _getAux(address owner) internal view returns (uint64) {
        return uint64(_packedAddressData[owner] >> BITPOS_AUX);
    }

    /**
     * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
     * If there are multiple variables, please pack them into a uint64.
     */
    function _setAux(address owner, uint64 aux) internal {
        uint256 packed = _packedAddressData[owner];
        uint256 auxCasted;
        // Cast `aux` with assembly to avoid redundant masking.
        assembly {
            auxCasted := aux
        }
        packed = (packed & BITMASK_AUX_COMPLEMENT) | (auxCasted << BITPOS_AUX);
        _packedAddressData[owner] = packed;
    }

    /**
     * Returns the packed ownership data of `tokenId`.
     */
    function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
        uint256 curr = tokenId;

        unchecked {
            if (_startTokenId() <= curr)
                if (curr < _currentIndex) {
                    uint256 packed = _packedOwnerships[curr];
                    // If not burned.
                    if (packed & BITMASK_BURNED == 0) {
                        // Invariant:
                        // There will always be an ownership that has an address and is not burned
                        // before an ownership that does not have an address and is not burned.
                        // Hence, curr will not underflow.
                        //
                        // We can directly compare the packed value.
                        // If the address is zero, packed is zero.
                        while (packed == 0) {
                            packed = _packedOwnerships[--curr];
                        }
                        return packed;
                    }
                }
        }
        revert OwnerQueryForNonexistentToken();
    }

    /**
     * Returns the unpacked `TokenOwnership` struct from `packed`.
     */
    function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
        ownership.addr = address(uint160(packed));
        ownership.startTimestamp = uint64(packed >> BITPOS_START_TIMESTAMP);
        ownership.burned = packed & BITMASK_BURNED != 0;
        ownership.extraData = uint24(packed >> BITPOS_EXTRA_DATA);
    }

    /**
     * Returns the unpacked `TokenOwnership` struct at `index`.
     */
    function _ownershipAt(uint256 index) internal view returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnerships[index]);
    }

    /**
     * @dev Initializes the ownership slot minted at `index` for efficiency purposes.
     */
    function _initializeOwnershipAt(uint256 index) internal {
        if (_packedOwnerships[index] == 0) {
            _packedOwnerships[index] = _packedOwnershipOf(index);
        }
    }

    /**
     * Gas spent here starts off proportional to the maximum mint batch size.
     * It gradually moves to O(1) as tokens get transferred around in the collection over time.
     */
    function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
        return _unpackedOwnership(_packedOwnershipOf(tokenId));
    }

    /**
     * @dev Packs ownership data into a single uint256.
     */
    function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
        assembly {
            // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
            owner := and(owner, BITMASK_ADDRESS)
            // `owner | (block.timestamp << BITPOS_START_TIMESTAMP) | flags`.
            result := or(owner, or(shl(BITPOS_START_TIMESTAMP, timestamp()), flags))
        }
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return address(uint160(_packedOwnershipOf(tokenId)));
    }

    /**
     * @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) {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

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

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

    /**
     * @dev Returns the `nextInitialized` flag set if `quantity` equals 1.
     */
    function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {
        // For branchless setting of the `nextInitialized` flag.
        assembly {
            // `(quantity == 1) << BITPOS_NEXT_INITIALIZED`.
            result := shl(BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
        }
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = ownerOf(tokenId);

        if (_msgSenderERC721A() != owner)
            if (!isApprovedForAll(owner, _msgSenderERC721A())) {
                revert ApprovalCallerNotOwnerNorApproved();
            }

        _tokenApprovals[tokenId] = to;
        emit Approval(owner, to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view override returns (address) {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        if (operator == _msgSenderERC721A()) revert ApproveToCaller();

        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), 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-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 {
        transferFrom(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                revert TransferToNonERC721ReceiverImplementer();
            }
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return
            _startTokenId() <= tokenId &&
            tokenId < _currentIndex && // If within bounds,
            _packedOwnerships[tokenId] & BITMASK_BURNED == 0; // and not burned.
    }

    /**
     * @dev Equivalent to `_safeMint(to, quantity, '')`.
     */
    function _safeMint(address to, uint256 quantity) internal {
        _safeMint(to, quantity, '');
    }

    /**
     * @dev Safely mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement
     *   {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
     * - `quantity` must be greater than 0.
     *
     * See {_mint}.
     *
     * Emits a {Transfer} event for each mint.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal {
        _mint(to, quantity);

        unchecked {
            if (to.code.length != 0) {
                uint256 end = _currentIndex;
                uint256 index = end - quantity;
                do {
                    if (!_checkContractOnERC721Received(address(0), to, index++, _data)) {
                        revert TransferToNonERC721ReceiverImplementer();
                    }
                } while (index < end);
                // Reentrancy protection.
                if (_currentIndex != end) revert();
            }
        }
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {Transfer} event for each mint.
     */
    function _mint(address to, uint256 quantity) internal {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();

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

        // Overflows are incredibly unrealistic.
        // `balance` and `numberMinted` have a maximum limit of 2**64.
        // `tokenId` has a maximum limit of 2**256.
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            _packedAddressData[to] += quantity * ((1 << BITPOS_NUMBER_MINTED) | 1);

            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            _packedOwnerships[startTokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
            );

            uint256 tokenId = startTokenId;
            uint256 end = startTokenId + quantity;
            do {
                emit Transfer(address(0), to, tokenId++);
            } while (tokenId < end);

            _currentIndex = end;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * This function is intended for efficient minting only during contract creation.
     *
     * It emits only one {ConsecutiveTransfer} as defined in
     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
     * instead of a sequence of {Transfer} event(s).
     *
     * Calling this function outside of contract creation WILL make your contract
     * non-compliant with the ERC721 standard.
     * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
     * {ConsecutiveTransfer} event is only permissible during contract creation.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {ConsecutiveTransfer} event.
     */
    function _mintERC2309(address to, uint256 quantity) internal {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();
        if (quantity > MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();

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

        // Overflows are unrealistic due to the above check for `quantity` to be below the limit.
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            _packedAddressData[to] += quantity * ((1 << BITPOS_NUMBER_MINTED) | 1);

            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `quantity == 1`.
            _packedOwnerships[startTokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
            );

            emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to);

            _currentIndex = startTokenId + quantity;
        }
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Returns the storage slot and value for the approved address of `tokenId`.
     */
    function _getApprovedAddress(uint256 tokenId)
        private
        view
        returns (uint256 approvedAddressSlot, address approvedAddress)
    {
        mapping(uint256 => address) storage tokenApprovalsPtr = _tokenApprovals;
        // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId]`.
        assembly {
            // Compute the slot.
            mstore(0x00, tokenId)
            mstore(0x20, tokenApprovalsPtr.slot)
            approvedAddressSlot := keccak256(0x00, 0x40)
            // Load the slot's value from storage.
            approvedAddress := sload(approvedAddressSlot)
        }
    }

    /**
     * @dev Returns whether the `approvedAddress` is equals to `from` or `msgSender`.
     */
    function _isOwnerOrApproved(
        address approvedAddress,
        address from,
        address msgSender
    ) private pure returns (bool result) {
        assembly {
            // Mask `from` to the lower 160 bits, in case the upper bits somehow aren't clean.
            from := and(from, BITMASK_ADDRESS)
            // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
            msgSender := and(msgSender, BITMASK_ADDRESS)
            // `msgSender == from || msgSender == approvedAddress`.
            result := or(eq(msgSender, from), eq(msgSender, approvedAddress))
        }
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

        if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedAddress(tokenId);

        // The nested ifs save around 20+ gas over a compound boolean condition.
        if (!_isOwnerOrApproved(approvedAddress, from, _msgSenderERC721A()))
            if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();

        if (to == address(0)) revert TransferToZeroAddress();

        _beforeTokenTransfers(from, to, tokenId, 1);

        // Clear approvals from the previous owner.
        assembly {
            if approvedAddress {
                // This is equivalent to `delete _tokenApprovals[tokenId]`.
                sstore(approvedAddressSlot, 0)
            }
        }

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
        unchecked {
            // We can directly increment and decrement the balances.
            --_packedAddressData[from]; // Updates: `balance -= 1`.
            ++_packedAddressData[to]; // Updates: `balance += 1`.

            // Updates:
            // - `address` to the next owner.
            // - `startTimestamp` to the timestamp of transfering.
            // - `burned` to `false`.
            // - `nextInitialized` to `true`.
            _packedOwnerships[tokenId] = _packOwnershipData(
                to,
                BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked)
            );

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (_packedOwnerships[nextTokenId] == 0) {
                    // If the next slot is within bounds.
                    if (nextTokenId != _currentIndex) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

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

    /**
     * @dev Equivalent to `_burn(tokenId, false)`.
     */
    function _burn(uint256 tokenId) internal virtual {
        _burn(tokenId, false);
    }

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

        address from = address(uint160(prevOwnershipPacked));

        (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedAddress(tokenId);

        if (approvalCheck) {
            // The nested ifs save around 20+ gas over a compound boolean condition.
            if (!_isOwnerOrApproved(approvedAddress, from, _msgSenderERC721A()))
                if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
        }

        _beforeTokenTransfers(from, address(0), tokenId, 1);

        // Clear approvals from the previous owner.
        assembly {
            if approvedAddress {
                // This is equivalent to `delete _tokenApprovals[tokenId]`.
                sstore(approvedAddressSlot, 0)
            }
        }

        // Underflow of the sender's balance is impossible because we check for
        // ownership above and the recipient's balance can't realistically overflow.
        // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
        unchecked {
            // Updates:
            // - `balance -= 1`.
            // - `numberBurned += 1`.
            //
            // We can directly decrement the balance, and increment the number burned.
            // This is equivalent to `packed -= 1; packed += 1 << BITPOS_NUMBER_BURNED;`.
            _packedAddressData[from] += (1 << BITPOS_NUMBER_BURNED) - 1;

            // Updates:
            // - `address` to the last owner.
            // - `startTimestamp` to the timestamp of burning.
            // - `burned` to `true`.
            // - `nextInitialized` to `true`.
            _packedOwnerships[tokenId] = _packOwnershipData(
                from,
                (BITMASK_BURNED | BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked)
            );

            // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
            if (prevOwnershipPacked & BITMASK_NEXT_INITIALIZED == 0) {
                uint256 nextTokenId = tokenId + 1;
                // If the next slot's address is zero and not burned (i.e. packed value is zero).
                if (_packedOwnerships[nextTokenId] == 0) {
                    // If the next slot is within bounds.
                    if (nextTokenId != _currentIndex) {
                        // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
                        _packedOwnerships[nextTokenId] = prevOwnershipPacked;
                    }
                }
            }
        }

        emit Transfer(from, address(0), tokenId);
        _afterTokenTransfers(from, address(0), tokenId, 1);

        // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
        unchecked {
            _burnCounter++;
        }
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target 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 _checkContractOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
            bytes4 retval
        ) {
            return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
        } catch (bytes memory reason) {
            if (reason.length == 0) {
                revert TransferToNonERC721ReceiverImplementer();
            } else {
                assembly {
                    revert(add(32, reason), mload(reason))
                }
            }
        }
    }

    /**
     * @dev Directly sets the extra data for the ownership data `index`.
     */
    function _setExtraDataAt(uint256 index, uint24 extraData) internal {
        uint256 packed = _packedOwnerships[index];
        if (packed == 0) revert OwnershipNotInitializedForExtraData();
        uint256 extraDataCasted;
        // Cast `extraData` with assembly to avoid redundant masking.
        assembly {
            extraDataCasted := extraData
        }
        packed = (packed & BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << BITPOS_EXTRA_DATA);
        _packedOwnerships[index] = packed;
    }

    /**
     * @dev Returns the next extra data for the packed ownership data.
     * The returned result is shifted into position.
     */
    function _nextExtraData(
        address from,
        address to,
        uint256 prevOwnershipPacked
    ) private view returns (uint256) {
        uint24 extraData = uint24(prevOwnershipPacked >> BITPOS_EXTRA_DATA);
        return uint256(_extraData(from, to, extraData)) << BITPOS_EXTRA_DATA;
    }

    /**
     * @dev Called during each token transfer to set the 24bit `extraData` field.
     * Intended to be overridden by the cosumer contract.
     *
     * `previousExtraData` - the value of `extraData` before transfer.
     *
     * 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, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _extraData(
        address from,
        address to,
        uint24 previousExtraData
    ) internal view virtual returns (uint24) {}

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred.
     * This includes minting.
     * And also called before burning one token.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, `tokenId` will be burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _beforeTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Hook that is called after a set of serially-ordered token ids have been transferred.
     * This includes minting.
     * And also called after one token has been burned.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
     * transferred to `to`.
     * - When `from` is zero, `tokenId` has been minted for `to`.
     * - When `to` is zero, `tokenId` has been burned by `from`.
     * - `from` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Returns the message sender (defaults to `msg.sender`).
     *
     * If you are writing GSN compatible contracts, you need to override this function.
     */
    function _msgSenderERC721A() internal view virtual returns (address) {
        return msg.sender;
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function _toString(uint256 value) internal pure returns (string memory ptr) {
        assembly {
            // The maximum value of a uint256 contains 78 digits (1 byte per digit),
            // but we allocate 128 bytes to keep the free memory pointer 32-byte word aliged.
            // We will need 1 32-byte word to store the length,
            // and 3 32-byte words to store a maximum of 78 digits. Total: 32 + 3 * 32 = 128.
            ptr := add(mload(0x40), 128)
            // Update the free memory pointer to allocate.
            mstore(0x40, ptr)

            // Cache the end of the memory to calculate the length later.
            let end := ptr

            // We write the string from the rightmost digit to the leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            // Costs a bit more than early returning for the zero case,
            // but cheaper in terms of deployment and overall runtime costs.
            for {
                // Initialize and perform the first pass without check.
                let temp := value
                // Move the pointer 1 byte leftwards to point to an empty character slot.
                ptr := sub(ptr, 1)
                // Write the character to the pointer. 48 is the ASCII index of '0'.
                mstore8(ptr, add(48, mod(temp, 10)))
                temp := div(temp, 10)
            } temp {
                // Keep dividing `temp` until zero.
                temp := div(temp, 10)
            } {
                // Body of the for loop.
                ptr := sub(ptr, 1)
                mstore8(ptr, add(48, mod(temp, 10)))
            }

            let length := sub(end, ptr)
            // Move the pointer 32 bytes leftwards to make room for the length.
            ptr := sub(ptr, 32)
            // Store the length.
            mstore(ptr, length)
        }
    }
}

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

pragma solidity ^0.8.0;

import "../Strings.sol";

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            /// @solidity memory-safe-assembly
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
        uint8 v = uint8((uint256(vs) >> 255) + 27);
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from `s`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

// 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 (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
// ERC721A Contracts v4.1.0
// Creator: Chiru Labs

pragma solidity ^0.8.4;

/**
 * @dev Interface of an ERC721A compliant contract.
 */
interface IERC721A {
    /**
     * The caller must own the token or be an approved operator.
     */
    error ApprovalCallerNotOwnerNorApproved();

    /**
     * The token does not exist.
     */
    error ApprovalQueryForNonexistentToken();

    /**
     * The caller cannot approve to their own address.
     */
    error ApproveToCaller();

    /**
     * Cannot query the balance for the zero address.
     */
    error BalanceQueryForZeroAddress();

    /**
     * Cannot mint to the zero address.
     */
    error MintToZeroAddress();

    /**
     * The quantity of tokens minted must be more than zero.
     */
    error MintZeroQuantity();

    /**
     * The token does not exist.
     */
    error OwnerQueryForNonexistentToken();

    /**
     * The caller must own the token or be an approved operator.
     */
    error TransferCallerNotOwnerNorApproved();

    /**
     * The token must be owned by `from`.
     */
    error TransferFromIncorrectOwner();

    /**
     * Cannot safely transfer to a contract that does not implement the ERC721Receiver interface.
     */
    error TransferToNonERC721ReceiverImplementer();

    /**
     * Cannot transfer to the zero address.
     */
    error TransferToZeroAddress();

    /**
     * The token does not exist.
     */
    error URIQueryForNonexistentToken();

    /**
     * The `quantity` minted with ERC2309 exceeds the safety limit.
     */
    error MintERC2309QuantityExceedsLimit();

    /**
     * The `extraData` cannot be set on an unintialized ownership slot.
     */
    error OwnershipNotInitializedForExtraData();

    struct TokenOwnership {
        // The address of the owner.
        address addr;
        // Keeps track of the start time of ownership with minimal overhead for tokenomics.
        uint64 startTimestamp;
        // Whether the token has been burned.
        bool burned;
        // Arbitrary data similar to `startTimestamp` that can be set through `_extraData`.
        uint24 extraData;
    }

    /**
     * @dev Returns the total amount of tokens stored by the contract.
     *
     * Burned tokens are calculated here, use `_totalMinted()` if you want to count just minted tokens.
     */
    function totalSupply() external view returns (uint256);

    // ==============================
    //            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);

    // ==============================
    //            IERC721
    // ==============================

    /**
     * @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 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 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);

    // ==============================
    //        IERC721Metadata
    // ==============================

    /**
     * @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);

    // ==============================
    //            IERC2309
    // ==============================

    /**
     * @dev Emitted when tokens in `fromTokenId` to `toTokenId` (inclusive) is transferred from `from` to `to`,
     * as defined in the ERC2309 standard. See `_mintERC2309` for more details.
     */
    event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}

// 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;
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"string","name":"uri","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"ApproveToCaller","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[],"name":"MintERC2309QuantityExceedsLimit","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"OwnershipNotInitializedForExtraData","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"fromTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"toTokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"ConsecutiveTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseUri","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"minted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"ownerMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"publicMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"publicMintEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"uri","type":"string"}],"name":"setBaseUri","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newAddress","type":"address"}],"name":"setSignerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"signerAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"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":[],"name":"togglePublicMint","outputs":[],"stateMutability":"nonpayable","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":"bytes","name":"signature","type":"bytes"}],"name":"whitelistMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0x608060405234801561001057600080fd5b50600436106101c45760003560e01c8063484b973c116100f95780639abc832011610097578063b88d4fde11610071578063b88d4fde14610393578063c87b56dd146103a6578063e985e9c5146103b9578063f2fde38b146103f557600080fd5b80639abc832014610365578063a0bcfc7f1461036d578063a22cb4651461038057600080fd5b806370a08231116100d357806370a0823114610331578063715018a6146103445780638da5cb5b1461034c57806395d89b411461035d57600080fd5b8063484b973c146102f85780635b7633d01461030b5780636352211e1461031e57600080fd5b80631e7269c51161016657806337bc4c0b1161014057806337bc4c0b146102c25780633ccfd60b146102d55780634047638d146102dd57806342842e0e146102e557600080fd5b80631e7269c51461028757806323b872dd146102a757806326092b83146102ba57600080fd5b8063081812fc116101a2578063081812fc1461021b578063095ea7b3146102465780630f4161aa1461025957806318160ddd1461026d57600080fd5b806301ffc9a7146101c9578063046dc166146101f157806306fdde0314610206575b600080fd5b6101dc6101d73660046115d6565b610408565b60405190151581526020015b60405180910390f35b6102046101ff36600461160f565b61045a565b005b61020e610484565b6040516101e89190611682565b61022e610229366004611695565b610516565b6040516001600160a01b0390911681526020016101e8565b6102046102543660046116ae565b61055a565b600a546101dc90600160a01b900460ff1681565b60015460005403600019015b6040519081526020016101e8565b61027961029536600461160f565b60096020526000908152604090205481565b6102046102b53660046116d8565b6105fa565b610204610793565b6102046102d03660046117c0565b610872565b6102046109d7565b610204610a93565b6102046102f33660046116d8565b610abc565b6102046103063660046116ae565b610adc565b600a5461022e906001600160a01b031681565b61022e61032c366004611695565b610af2565b61027961033f36600461160f565b610afd565b610204610b4c565b6008546001600160a01b031661022e565b61020e610b5e565b61020e610b6d565b61020461037b3660046117f5565b610bfb565b61020461038e36600461183e565b610c0f565b6102046103a136600461187a565b610ca4565b61020e6103b4366004611695565b610cee565b6101dc6103c73660046118e2565b6001600160a01b03918216600090815260076020908152604080832093909416825291909152205460ff1690565b61020461040336600461160f565b610d72565b60006301ffc9a760e01b6001600160e01b03198316148061043957506380ac58cd60e01b6001600160e01b03198316145b806104545750635b5e139f60e01b6001600160e01b03198316145b92915050565b610462610de8565b600a80546001600160a01b0319166001600160a01b0392909216919091179055565b60606002805461049390611915565b80601f01602080910402602001604051908101604052809291908181526020018280546104bf90611915565b801561050c5780601f106104e15761010080835404028352916020019161050c565b820191906000526020600020905b8154815290600101906020018083116104ef57829003601f168201915b5050505050905090565b600061052182610e42565b61053e576040516333d1c03960e21b815260040160405180910390fd5b506000908152600660205260409020546001600160a01b031690565b600061056582610af2565b9050336001600160a01b0382161461059e5761058181336103c7565b61059e576040516367d9dca160e11b815260040160405180910390fd5b60008281526006602052604080822080546001600160a01b0319166001600160a01b0387811691821790925591518593918516917f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b92591a4505050565b600061060582610e77565b9050836001600160a01b0316816001600160a01b0316146106385760405162a1148160e81b815260040160405180910390fd5b60008281526006602052604090208054338082146001600160a01b038816909114176106855761066886336103c7565b61068557604051632ce44b5f60e11b815260040160405180910390fd5b6001600160a01b0385166106ac57604051633a954ecd60e21b815260040160405180910390fd5b80156106b757600082555b6001600160a01b038681166000908152600560205260408082208054600019019055918716808252919020805460010190554260a01b17600160e11b17600085815260046020526040812091909155600160e11b84169003610749576001840160008181526004602052604081205490036107475760005481146107475760008181526004602052604090208490555b505b83856001600160a01b0316876001600160a01b03167fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef60405160405180910390a45b505050505050565b600a54600160a01b900460ff166107f15760405162461bcd60e51b815260206004820152601760248201527f7075626c6963206d696e74206e6f7420656e61626c656400000000000000000060448201526064015b60405180910390fd5b336000908152600960205260409020541561083f5760405162461bcd60e51b815260206004820152600e60248201526d185b1c9958591e481b5a5b9d195960921b60448201526064016107e8565b33600090815260096020526040812080546001929061085f90849061194f565b909155506108709050336001610ee6565b565b604080516bffffffffffffffffffffffff193360601b16602080830191909152825180830360140181526034830184528051908201207f19457468657265756d205369676e6564204d6573736167653a0a333200000000605484015260708084019190915283518084039091018152609090920190925280519101206108f89082610f4f565b600a546001600160a01b039081169116146109555760405162461bcd60e51b815260206004820152601960248201527f446972656374206d696e74696e6720646973616c6c6f7765640000000000000060448201526064016107e8565b33600090815260096020526040902054156109a35760405162461bcd60e51b815260206004820152600e60248201526d185b1c9958591e481b5a5b9d195960921b60448201526064016107e8565b3360009081526009602052604081208054600192906109c390849061194f565b909155506109d49050336001610ee6565b50565b6109df610de8565b60006109f36008546001600160a01b031690565b6001600160a01b03164760405160006040518083038185875af1925050503d8060008114610a3d576040519150601f19603f3d011682016040523d82523d6000602084013e610a42565b606091505b50509050806109d45760405162461bcd60e51b815260206004820152601860248201527f7769746864726177616c20756e7375636365737366756c2e000000000000000060448201526064016107e8565b610a9b610de8565b600a805460ff60a01b198116600160a01b9182900460ff1615909102179055565b610ad783838360405180602001604052806000815250610ca4565b505050565b610ae4610de8565b610aee8282610ee6565b5050565b600061045482610e77565b60006001600160a01b038216610b26576040516323d3ad8160e21b815260040160405180910390fd5b506001600160a01b031660009081526005602052604090205467ffffffffffffffff1690565b610b54610de8565b6108706000610f73565b60606003805461049390611915565b600b8054610b7a90611915565b80601f0160208091040260200160405190810160405280929190818152602001828054610ba690611915565b8015610bf35780601f10610bc857610100808354040283529160200191610bf3565b820191906000526020600020905b815481529060010190602001808311610bd657829003601f168201915b505050505081565b610c03610de8565b600b610aee82826119bb565b336001600160a01b03831603610c385760405163b06307db60e01b815260040160405180910390fd5b3360008181526007602090815260408083206001600160a01b03871680855290835292819020805460ff191686151590811790915590519081529192917f17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31910160405180910390a35050565b610caf8484846105fa565b6001600160a01b0383163b15610ce857610ccb84848484610fc5565b610ce8576040516368d2bf6b60e11b815260040160405180910390fd5b50505050565b6060610cf982610e42565b610d1657604051630a14c4b560e41b815260040160405180910390fd5b6000610d206110b1565b90508051600003610d405760405180602001604052806000815250610d6b565b80610d4a846110c0565b604051602001610d5b929190611a7b565b6040516020818303038152906040525b9392505050565b610d7a610de8565b6001600160a01b038116610ddf5760405162461bcd60e51b815260206004820152602660248201527f4f776e61626c653a206e6577206f776e657220697320746865207a65726f206160448201526564647265737360d01b60648201526084016107e8565b6109d481610f73565b6008546001600160a01b031633146108705760405162461bcd60e51b815260206004820181905260248201527f4f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e657260448201526064016107e8565b600081600111158015610e56575060005482105b8015610454575050600090815260046020526040902054600160e01b161590565b60008180600111610ecd57600054811015610ecd5760008181526004602052604081205490600160e01b82169003610ecb575b80600003610d6b575060001901600081815260046020526040902054610eaa565b505b604051636f96cda160e11b815260040160405180910390fd5b60015460005461115c91900360001901610f00908361194f565b1115610f455760405162461bcd60e51b815260206004820152601460248201527326b0bc1039bab838363c9032bc31b2b2b232b21760611b60448201526064016107e8565b610aee828261110f565b6000806000610f5e8585611129565b91509150610f6b81611197565b509392505050565b600880546001600160a01b038381166001600160a01b0319831681179093556040519116919082907f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e090600090a35050565b604051630a85bd0160e11b81526000906001600160a01b0385169063150b7a0290610ffa903390899088908890600401611aaa565b6020604051808303816000875af1925050508015611035575060408051601f3d908101601f1916820190925261103291810190611ae7565b60015b611093573d808015611063576040519150601f19603f3d011682016040523d82523d6000602084013e611068565b606091505b50805160000361108b576040516368d2bf6b60e11b815260040160405180910390fd5b805181602001fd5b6001600160e01b031916630a85bd0160e11b1490505b949350505050565b6060600b805461049390611915565b604080516080810191829052607f0190826030600a8206018353600a90045b80156110fd57600183039250600a81066030018353600a90046110df565b50819003601f19909101908152919050565b610aee82826040518060200160405280600081525061134d565b600080825160410361115f5760208301516040840151606085015160001a611153878285856113ba565b94509450505050611190565b8251604003611188576020830151604084015161117d8683836114a7565b935093505050611190565b506000905060025b9250929050565b60008160048111156111ab576111ab611b04565b036111b35750565b60018160048111156111c7576111c7611b04565b036112145760405162461bcd60e51b815260206004820152601860248201527f45434453413a20696e76616c6964207369676e6174757265000000000000000060448201526064016107e8565b600281600481111561122857611228611b04565b036112755760405162461bcd60e51b815260206004820152601f60248201527f45434453413a20696e76616c6964207369676e6174757265206c656e6774680060448201526064016107e8565b600381600481111561128957611289611b04565b036112e15760405162461bcd60e51b815260206004820152602260248201527f45434453413a20696e76616c6964207369676e6174757265202773272076616c604482015261756560f01b60648201526084016107e8565b60048160048111156112f5576112f5611b04565b036109d45760405162461bcd60e51b815260206004820152602260248201527f45434453413a20696e76616c6964207369676e6174757265202776272076616c604482015261756560f01b60648201526084016107e8565b61135783836114e0565b6001600160a01b0383163b15610ad7576000548281035b6113816000868380600101945086610fc5565b61139e576040516368d2bf6b60e11b815260040160405180910390fd5b81811061136e5781600054146113b357600080fd5b5050505050565b6000807f7fffffffffffffffffffffffffffffff5d576e7357a4501ddfe92f46681b20a08311156113f1575060009050600361149e565b8460ff16601b1415801561140957508460ff16601c14155b1561141a575060009050600461149e565b6040805160008082526020820180845289905260ff881692820192909252606081018690526080810185905260019060a0016020604051602081039080840390855afa15801561146e573d6000803e3d6000fd5b5050604051601f1901519150506001600160a01b0381166114975760006001925092505061149e565b9150600090505b94509492505050565b6000806001600160ff1b038316816114c460ff86901c601b61194f565b90506114d2878288856113ba565b935093505050935093915050565b6000546001600160a01b03831661150957604051622e076360e81b815260040160405180910390fd5b8160000361152a5760405163b562e8dd60e01b815260040160405180910390fd5b6001600160a01b038316600081815260056020526040902080546801000000000000000185020190554260a01b6001841460e11b1717600082815260046020526040902055808281015b6040516001830192906001600160a01b038716906000907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef908290a48082106115745760005550505050565b6001600160e01b0319811681146109d457600080fd5b6000602082840312156115e857600080fd5b8135610d6b816115c0565b80356001600160a01b038116811461160a57600080fd5b919050565b60006020828403121561162157600080fd5b610d6b826115f3565b60005b8381101561164557818101518382015260200161162d565b83811115610ce85750506000910152565b6000815180845261166e81602086016020860161162a565b601f01601f19169290920160200192915050565b602081526000610d6b6020830184611656565b6000602082840312156116a757600080fd5b5035919050565b600080604083850312156116c157600080fd5b6116ca836115f3565b946020939093013593505050565b6000806000606084860312156116ed57600080fd5b6116f6846115f3565b9250611704602085016115f3565b9150604084013590509250925092565b634e487b7160e01b600052604160045260246000fd5b600067ffffffffffffffff8084111561174557611745611714565b604051601f8501601f19908116603f0116810190828211818310171561176d5761176d611714565b8160405280935085815286868601111561178657600080fd5b858560208301376000602087830101525050509392505050565b600082601f8301126117b157600080fd5b610d6b8383356020850161172a565b6000602082840312156117d257600080fd5b813567ffffffffffffffff8111156117e957600080fd5b6110a9848285016117a0565b60006020828403121561180757600080fd5b813567ffffffffffffffff81111561181e57600080fd5b8201601f8101841361182f57600080fd5b6110a98482356020840161172a565b6000806040838503121561185157600080fd5b61185a836115f3565b91506020830135801515811461186f57600080fd5b809150509250929050565b6000806000806080858703121561189057600080fd5b611899856115f3565b93506118a7602086016115f3565b925060408501359150606085013567ffffffffffffffff8111156118ca57600080fd5b6118d6878288016117a0565b91505092959194509250565b600080604083850312156118f557600080fd5b6118fe836115f3565b915061190c602084016115f3565b90509250929050565b600181811c9082168061192957607f821691505b60208210810361194957634e487b7160e01b600052602260045260246000fd5b50919050565b6000821982111561197057634e487b7160e01b600052601160045260246000fd5b500190565b601f821115610ad757600081815260208120601f850160051c8101602086101561199c5750805b601f850160051c820191505b8181101561078b578281556001016119a8565b815167ffffffffffffffff8111156119d5576119d5611714565b6119e9816119e38454611915565b84611975565b602080601f831160018114611a1e5760008415611a065750858301515b600019600386901b1c1916600185901b17855561078b565b600085815260208120601f198616915b82811015611a4d57888601518255948401946001909101908401611a2e565b5085821015611a6b5787850151600019600388901b60f8161c191681555b5050505050600190811b01905550565b60008351611a8d81846020880161162a565b835190830190611aa181836020880161162a565b01949350505050565b6001600160a01b0385811682528416602082015260408101839052608060608201819052600090611add90830184611656565b9695505050505050565b600060208284031215611af957600080fd5b8151610d6b816115c0565b634e487b7160e01b600052602160045260246000fdfea26469706673582212204e13abd5c9a6dfa6a585ca4f44d3af2a52b8aeca78c2fb528d28f053a35a5bec64736f6c634300080f0033

0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002f68747470733a2f2f7777772e626670617274792e696f2f2e6e65746c6966792f66756e6374696f6e732f6d6574612f0000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : uri (string): https://www.bfparty.io/.netlify/functions/meta/

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [1] : 000000000000000000000000000000000000000000000000000000000000002f
Arg [2] : 68747470733a2f2f7777772e626670617274792e696f2f2e6e65746c6966792f
Arg [3] : 66756e6374696f6e732f6d6574612f0000000000000000000000000000000000