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
// 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) (security/Pausable.sol)

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// 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
pragma solidity 0.8.17;

import "./SignatureHelper.sol";
import "erc721a/contracts/ERC721A.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/Pausable.sol";

contract RektWTF is ERC721A, Pausable, Ownable, SignatureHelper {
    uint256 public immutable MAX_SUPPLY;

    string private baseURI;

    mapping(address => uint16) public nonces;

    event Mint(address indexed account, uint256 nonce, bytes signature);

    constructor(
        uint256 _maxSupply,
        string memory baseURI_,
        address _signer
    ) ERC721A("RektWTF", "REKT") SignatureHelper(_signer) {
        MAX_SUPPLY = _maxSupply;

        baseURI = baseURI_;
    }

    function pause() public onlyOwner {
        _pause();
    }

    function unpause() public onlyOwner {
        _unpause();
    }

    function tokenURI(uint256 tokenId)
        public
        view
        override
        returns (string memory)
    {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

        return string(abi.encodePacked(baseURI, _toString(tokenId), ".json"));
    }

    function _getMessageHash(address account, uint256 nonce)
        internal
        pure
        returns (bytes32)
    {
        return keccak256(abi.encodePacked(account, nonce));
    }

    function mint(bytes calldata signature) external payable whenNotPaused {
        require(totalSupply() < MAX_SUPPLY, "Out of supply");

        bytes32 messageHash = _getMessageHash(msg.sender, nonces[msg.sender]++);
        require(
            verify(messageHash, signature),
            "Invalid signature, please contact our support team"
        );

        _mint(_msgSender(), 1);

        emit Mint(msg.sender, nonces[msg.sender] - 1, signature);
    }

    function updateURI(string memory newURI) external onlyOwner {
        baseURI = newURI;
    }

    function _beforeTokenTransfers(
        address from,
        address to,
        uint256 tokenId,
        uint256 batchSize
    ) internal override whenNotPaused {
        super._beforeTokenTransfers(from, to, tokenId, batchSize);
    }

    function withdraw(address recipient) external onlyOwner {
        (bool success, ) = recipient.call{value: address(this).balance}("");

        require(success, "Unable to send value, recipient may have reverted");
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract SignatureHelper {
    address public signer;

    constructor(address _signer) {
        signer = _signer;
    }

    function verify(bytes32 messageHash, bytes memory signature)
        internal
        view
        returns (bool)
    {
        bytes32 ethSignedMessageHash = getEthSignedMessageHash(messageHash);

        return recoverSigner(ethSignedMessageHash, signature) == signer;
    }

    function getEthSignedMessageHash(bytes32 messageHash)
        internal
        pure
        returns (bytes32)
    {
        return
            keccak256(
                abi.encodePacked(
                    "\x19Ethereum Signed Message:\n32",
                    messageHash
                )
            );
    }

    function recoverSigner(
        bytes32 _ethSignedMessageHash,
        bytes memory _signature
    ) internal pure returns (address) {
        (bytes32 r, bytes32 s, uint8 v) = splitSignature(_signature);

        return ecrecover(_ethSignedMessageHash, v, r, s);
    }

    function splitSignature(bytes memory signature)
        internal
        pure
        returns (
            bytes32 r,
            bytes32 s,
            uint8 v
        )
    {
        require(signature.length == 65, "invalid signature length");

        assembly {
            r := mload(add(signature, 32))
            s := mload(add(signature, 64))
            v := byte(0, mload(add(signature, 96)))
        }
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721A.sol';

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

/**
 * @title ERC721A
 *
 * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)
 * Non-Fungible Token Standard, including the Metadata extension.
 * Optimized for lower gas during batch mints.
 *
 * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)
 * starting from `_startTokenId()`.
 *
 * Assumptions:
 *
 * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
 * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).
 */
contract ERC721A is IERC721A {
    // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).
    struct TokenApprovalRef {
        address value;
    }

    // =============================================================
    //                           CONSTANTS
    // =============================================================

    // 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 `Transfer` event signature is given by:
    // `keccak256(bytes("Transfer(address,address,uint256)"))`.
    bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
        0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;

    // =============================================================
    //                            STORAGE
    // =============================================================

    // The next token ID 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 => TokenApprovalRef) private _tokenApprovals;

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

    // =============================================================
    //                          CONSTRUCTOR
    // =============================================================

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

    // =============================================================
    //                   TOKEN COUNTING OPERATIONS
    // =============================================================

    /**
     * @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 virtual 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 virtual 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 virtual 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 virtual returns (uint256) {
        return _burnCounter;
    }

    // =============================================================
    //                    ADDRESS DATA OPERATIONS
    // =============================================================

    /**
     * @dev Returns the number of tokens in `owner`'s account.
     */
    function balanceOf(address owner) public view virtual 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 virtual {
        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;
    }

    // =============================================================
    //                            IERC165
    // =============================================================

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    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: [ERC165](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.
    }

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

    /**
     * @dev Returns the token collection name.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    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 '';
    }

    // =============================================================
    //                     OWNERSHIPS OPERATIONS
    // =============================================================

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        return address(uint160(_packedOwnershipOf(tokenId)));
    }

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

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

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

    /**
     * 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 initialized ownership slot
                        // (i.e. `ownership.addr != address(0) && ownership.burned == false`)
                        // before an unintialized ownership slot
                        // (i.e. `ownership.addr == address(0) && ownership.burned == false`)
                        // Hence, `curr` will not underflow.
                        //
                        // We can directly compare the packed value.
                        // If the address is zero, packed will be zero.
                        while (packed == 0) {
                            packed = _packedOwnerships[--curr];
                        }
                        return packed;
                    }
                }
        }
        revert OwnerQueryForNonexistentToken();
    }

    /**
     * @dev 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);
    }

    /**
     * @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 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))
        }
    }

    // =============================================================
    //                      APPROVAL OPERATIONS
    // =============================================================

    /**
     * @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) public payable virtual override {
        address owner = ownerOf(tokenId);

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

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

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();

        return _tokenApprovals[tokenId].value;
    }

    /**
     * @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) public virtual override {
        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
    }

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

    /**
     * @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. See {_mint}.
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return
            _startTokenId() <= tokenId &&
            tokenId < _currentIndex && // If within bounds,
            _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned.
    }

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

    /**
     * @dev Returns the storage slot and value for the approved address of `tokenId`.
     */
    function _getApprovedSlotAndAddress(uint256 tokenId)
        private
        view
        returns (uint256 approvedAddressSlot, address approvedAddress)
    {
        TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];
        // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.
        assembly {
            approvedAddressSlot := tokenApproval.slot
            approvedAddress := sload(approvedAddressSlot)
        }
    }

    // =============================================================
    //                      TRANSFER OPERATIONS
    // =============================================================

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * 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
    ) public payable virtual override {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

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

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

        // The nested ifs save around 20+ gas over a compound boolean condition.
        if (!_isSenderApprovedOrOwner(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 `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public payable virtual override {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @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 memory _data
    ) public payable virtual override {
        transferFrom(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                revert TransferToNonERC721ReceiverImplementer();
            }
    }

    /**
     * @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 Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
     *
     * `from` - Previous owner of the given token ID.
     * `to` - Target address that will receive the token.
     * `tokenId` - Token ID to be transferred.
     * `_data` - Optional data to send along with the call.
     *
     * Returns 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))
                }
            }
        }
    }

    // =============================================================
    //                        MINT OPERATIONS
    // =============================================================

    /**
     * @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 virtual {
        uint256 startTokenId = _currentIndex;
        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 toMasked;
            uint256 end = startTokenId + quantity;

            // Use assembly to loop and emit the `Transfer` event for gas savings.
            // The duplicated `log4` removes an extra check and reduces stack juggling.
            // The assembly, together with the surrounding Solidity code, have been
            // delicately arranged to nudge the compiler into producing optimized opcodes.
            assembly {
                // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
                toMasked := and(to, _BITMASK_ADDRESS)
                // Emit the `Transfer` event.
                log4(
                    0, // Start of data (0, since no data).
                    0, // End of data (0, since no data).
                    _TRANSFER_EVENT_SIGNATURE, // Signature.
                    0, // `address(0)`.
                    toMasked, // `to`.
                    startTokenId // `tokenId`.
                )

                // The `iszero(eq(,))` check ensures that large values of `quantity`
                // that overflows uint256 will make the loop run out of gas.
                // The compiler will optimize the `iszero` away for performance.
                for {
                    let tokenId := add(startTokenId, 1)
                } iszero(eq(tokenId, end)) {
                    tokenId := add(tokenId, 1)
                } {
                    // Emit the `Transfer` event. Similar to above.
                    log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
                }
            }
            if (toMasked == 0) revert MintToZeroAddress();

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

    // =============================================================
    //                        BURN OPERATIONS
    // =============================================================

    /**
     * @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) = _getApprovedSlotAndAddress(tokenId);

        if (approvalCheck) {
            // The nested ifs save around 20+ gas over a compound boolean condition.
            if (!_isSenderApprovedOrOwner(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++;
        }
    }

    // =============================================================
    //                     EXTRA DATA OPERATIONS
    // =============================================================

    /**
     * @dev Directly sets the extra data for the ownership data `index`.
     */
    function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
        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 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 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;
    }

    // =============================================================
    //                       OTHER OPERATIONS
    // =============================================================

    /**
     * @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 virtual returns (string memory str) {
        assembly {
            // The maximum value of a uint256 contains 78 digits (1 byte per digit), but
            // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
            // We will need 1 word for the trailing zeros padding, 1 word for the length,
            // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.
            let m := add(mload(0x40), 0xa0)
            // Update the free memory pointer to allocate.
            mstore(0x40, m)
            // Assign the `str` to the end.
            str := sub(m, 0x20)
            // Zeroize the slot after the string.
            mstore(str, 0)

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

            // We write the string from rightmost digit to leftmost digit.
            // The following is essentially a do-while loop that also handles the zero case.
            // prettier-ignore
            for { let temp := value } 1 {} {
                str := sub(str, 1)
                // Write the character to the pointer.
                // The ASCII index of the '0' character is 48.
                mstore8(str, add(48, mod(temp, 10)))
                // Keep dividing `temp` until zero.
                temp := div(temp, 10)
                // prettier-ignore
                if iszero(temp) { break }
            }

            let length := sub(end, str)
            // Move the pointer 32 bytes leftwards to make room for the length.
            str := sub(str, 0x20)
            // Store the length.
            mstore(str, length)
        }
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity ^0.8.4;

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

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

    /**
     * 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();

    // =============================================================
    //                            STRUCTS
    // =============================================================

    struct TokenOwnership {
        // The address of the owner.
        address addr;
        // Stores 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 via {_extraData}.
        uint24 extraData;
    }

    // =============================================================
    //                         TOKEN COUNTERS
    // =============================================================

    /**
     * @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() external view returns (uint256);

    // =============================================================
    //                            IERC165
    // =============================================================

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 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`,
     * 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,
        bytes calldata data
    ) external payable;

    /**
     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external payable;

    /**
     * @dev Transfers `tokenId` 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 payable;

    /**
     * @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 payable;

    /**
     * @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](https://eips.ethereum.org/EIPS/eip-2309) standard.
     *
     * See {_mintERC2309} for more details.
     */
    event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 2000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"uint256","name":"_maxSupply","type":"uint256"},{"internalType":"string","name":"baseURI_","type":"string"},{"internalType":"address","name":"_signer","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","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":"account","type":"address"},{"indexed":false,"internalType":"uint256","name":"nonce","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"signature","type":"bytes"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","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"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"MAX_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"bytes","name":"signature","type":"bytes"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","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":"payable","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":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"signer","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":[{"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":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newURI","type":"string"}],"name":"updateURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

60a06040523480156200001157600080fd5b506040516200218138038062002181833981016040819052620000349162000178565b80604051806040016040528060078152602001662932b5ba2baa2360c91b81525060405180604001604052806004815260200163149152d560e21b8152508160029081620000839190620002f9565b506003620000928282620002f9565b506000805550506008805460ff19169055620000ae33620000eb565b600980546001600160a01b0319166001600160a01b03929092169190911790556080839052600a620000e18382620002f9565b50505050620003c5565b600880546001600160a01b03838116610100818102610100600160a81b031985161790945560405193909204169182907f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e090600090a35050565b634e487b7160e01b600052604160045260246000fd5b80516001600160a01b03811681146200017357600080fd5b919050565b6000806000606084860312156200018e57600080fd5b8351602080860151919450906001600160401b0380821115620001b057600080fd5b818701915087601f830112620001c557600080fd5b815181811115620001da57620001da62000145565b604051601f8201601f19908116603f0116810190838211818310171562000205576200020562000145565b816040528281528a868487010111156200021e57600080fd5b600093505b8284101562000242578484018601518185018701529285019262000223565b600086848301015280975050505050505062000261604085016200015b565b90509250925092565b600181811c908216806200027f57607f821691505b602082108103620002a057634e487b7160e01b600052602260045260246000fd5b50919050565b601f821115620002f457600081815260208120601f850160051c81016020861015620002cf5750805b601f850160051c820191505b81811015620002f057828155600101620002db565b5050505b505050565b81516001600160401b0381111562000315576200031562000145565b6200032d816200032684546200026a565b84620002a6565b602080601f8311600181146200036557600084156200034c5750858301515b600019600386901b1c1916600185901b178555620002f0565b600085815260208120601f198616915b82811015620003965788860151825594840194600190910190840162000375565b5085821015620003b55787850151600019600388901b60f8161c191681555b5050505050600190811b01905550565b608051611d99620003e8600039600081816102bd0152610b780152611d996000f3fe6080604052600436106101a55760003560e01c806370a08231116100e157806395d89b411161008a578063c30f4a5a11610064578063c30f4a5a1461046b578063c87b56dd1461048b578063e985e9c5146104ab578063f2fde38b146104f457600080fd5b806395d89b4114610423578063a22cb46514610438578063b88d4fde1461045857600080fd5b80637ecebe00116100bb5780637ecebe00146103a75780638456cb59146103eb5780638da5cb5b1461040057600080fd5b806370a082311461035f578063715018a61461037f5780637ba0e2e71461039457600080fd5b806323b872dd1161014e57806342842e0e1161012857806342842e0e146102f457806351cff8d9146103075780635c975abb146103275780636352211e1461033f57600080fd5b806323b872dd1461029857806332cb6b0c146102ab5780633f4ba83a146102df57600080fd5b8063095ea7b31161017f578063095ea7b31461024057806318160ddd14610255578063238ac9331461027857600080fd5b806301ffc9a7146101b157806306fdde03146101e6578063081812fc1461020857600080fd5b366101ac57005b600080fd5b3480156101bd57600080fd5b506101d16101cc366004611720565b610514565b60405190151581526020015b60405180910390f35b3480156101f257600080fd5b506101fb6105f9565b6040516101dd919061178d565b34801561021457600080fd5b506102286102233660046117a0565b61068b565b6040516001600160a01b0390911681526020016101dd565b61025361024e3660046117d5565b6106e8565b005b34801561026157600080fd5b50600154600054035b6040519081526020016101dd565b34801561028457600080fd5b50600954610228906001600160a01b031681565b6102536102a63660046117ff565b6107b9565b3480156102b757600080fd5b5061026a7f000000000000000000000000000000000000000000000000000000000000000081565b3480156102eb57600080fd5b506102536109dd565b6102536103023660046117ff565b6109ef565b34801561031357600080fd5b5061025361032236600461183b565b610a0f565b34801561033357600080fd5b5060085460ff166101d1565b34801561034b57600080fd5b5061022861035a3660046117a0565b610ae9565b34801561036b57600080fd5b5061026a61037a36600461183b565b610af4565b34801561038b57600080fd5b50610253610b5c565b6102536103a2366004611856565b610b6e565b3480156103b357600080fd5b506103d86103c236600461183b565b600b6020526000908152604090205461ffff1681565b60405161ffff90911681526020016101dd565b3480156103f757600080fd5b50610253610db2565b34801561040c57600080fd5b5060085461010090046001600160a01b0316610228565b34801561042f57600080fd5b506101fb610dc2565b34801561044457600080fd5b506102536104533660046118c8565b610dd1565b610253610466366004611990565b610e3d565b34801561047757600080fd5b50610253610486366004611a0c565b610ea0565b34801561049757600080fd5b506101fb6104a63660046117a0565b610eb4565b3480156104b757600080fd5b506101d16104c6366004611a55565b6001600160a01b03918216600090815260076020908152604080832093909416825291909152205460ff1690565b34801561050057600080fd5b5061025361050f36600461183b565b610f27565b60007f01ffc9a7000000000000000000000000000000000000000000000000000000007fffffffff00000000000000000000000000000000000000000000000000000000831614806105a757507f80ac58cd000000000000000000000000000000000000000000000000000000007fffffffff000000000000000000000000000000000000000000000000000000008316145b806105f357507f5b5e139f000000000000000000000000000000000000000000000000000000007fffffffff000000000000000000000000000000000000000000000000000000008316145b92915050565b60606002805461060890611a88565b80601f016020809104026020016040519081016040528092919081815260200182805461063490611a88565b80156106815780601f1061065657610100808354040283529160200191610681565b820191906000526020600020905b81548152906001019060200180831161066457829003601f168201915b5050505050905090565b600061069682610fb7565b6106cc576040517fcf4700e400000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b506000908152600660205260409020546001600160a01b031690565b60006106f382610ae9565b9050336001600160a01b038216146107455761070f81336104c6565b610745576040517fcfb3b94200000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b60008281526006602052604080822080547fffffffffffffffffffffffff0000000000000000000000000000000000000000166001600160a01b0387811691821790925591518593918516917f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b92591a4505050565b60006107c482610ff7565b9050836001600160a01b0316816001600160a01b031614610811576040517fa114810000000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b60008281526006602052604090208054338082146001600160a01b038816909114176108775761084186336104c6565b610877576040517f59c896be00000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b6001600160a01b0385166108b7576040517fea553b3400000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b6108c48686866001611097565b80156108cf57600082555b6001600160a01b038681166000908152600560205260408082208054600019019055918716808252919020805460010190554260a01b177c0200000000000000000000000000000000000000000000000000000000176000858152600460205260408120919091557c020000000000000000000000000000000000000000000000000000000084169003610993576001840160008181526004602052604081205490036109915760005481146109915760008181526004602052604090208490555b505b83856001600160a01b0316876001600160a01b03167fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef60405160405180910390a45b505050505050565b6109e56110a4565b6109ed611104565b565b610a0a83838360405180602001604052806000815250610e3d565b505050565b610a176110a4565b6000816001600160a01b03164760405160006040518083038185875af1925050503d8060008114610a64576040519150601f19603f3d011682016040523d82523d6000602084013e610a69565b606091505b5050905080610ae55760405162461bcd60e51b815260206004820152603160248201527f556e61626c6520746f2073656e642076616c75652c20726563697069656e742060448201527f6d6179206861766520726576657274656400000000000000000000000000000060648201526084015b60405180910390fd5b5050565b60006105f382610ff7565b60006001600160a01b038216610b36576040517f8f4eb60400000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b506001600160a01b031660009081526005602052604090205467ffffffffffffffff1690565b610b646110a4565b6109ed6000611156565b610b766111c7565b7f0000000000000000000000000000000000000000000000000000000000000000610ba46001546000540390565b10610bf15760405162461bcd60e51b815260206004820152600d60248201527f4f7574206f6620737570706c79000000000000000000000000000000000000006044820152606401610adc565b336000818152600b6020526040812080549192610c9392909161ffff9091169084610c1b83611ad8565b91906101000a81548161ffff021916908361ffff16021790555061ffff166040517fffffffffffffffffffffffffffffffffffffffff000000000000000000000000606084901b1660208201526034810182905260009060540160405160208183030381529060405280519060200120905092915050565b9050610cd58184848080601f01602080910402602001604051908101604052809392919081815260200183838082843760009201919091525061121a92505050565b610d475760405162461bcd60e51b815260206004820152603260248201527f496e76616c6964207369676e61747572652c20706c6561736520636f6e74616360448201527f74206f757220737570706f7274207465616d00000000000000000000000000006064820152608401610adc565b610d5233600161129f565b336000818152600b60205260409020547f13b4590e2f417016fce3f02298116b2ad6220e5ee149b4c55d2f1d9f5012762390610d949060019061ffff16611af9565b8585604051610da593929190611b1b565b60405180910390a2505050565b610dba6110a4565b6109ed6113dd565b60606003805461060890611a88565b3360008181526007602090815260408083206001600160a01b03871680855290835292819020805460ff191686151590811790915590519081529192917f17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31910160405180910390a35050565b610e488484846107b9565b6001600160a01b0383163b15610e9a57610e648484848461141a565b610e9a576040517fd1a57ed600000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b50505050565b610ea86110a4565b600a610ae58282611b9b565b6060610ebf82610fb7565b610ef5576040517fa14c4b5000000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b600a610f0083611569565b604051602001610f11929190611c5b565b6040516020818303038152906040529050919050565b610f2f6110a4565b6001600160a01b038116610fab5760405162461bcd60e51b815260206004820152602660248201527f4f776e61626c653a206e6577206f776e657220697320746865207a65726f206160448201527f64647265737300000000000000000000000000000000000000000000000000006064820152608401610adc565b610fb481611156565b50565b60008054821080156105f35750506000908152600460205260409020547c0100000000000000000000000000000000000000000000000000000000161590565b60008160005481101561106557600081815260046020526040812054907c010000000000000000000000000000000000000000000000000000000082169003611063575b8060000361105c57506000190160008181526004602052604090205461103b565b9392505050565b505b6040517fdf2d9b4200000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b61109f6111c7565b610e9a565b6008546001600160a01b036101009091041633146109ed5760405162461bcd60e51b815260206004820181905260248201527f4f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e65726044820152606401610adc565b61110c6115ad565b6008805460ff191690557f5db9ee0a495bf2e6ff9c91a7834c1ba4fdd244a5e8aa4e537bd38aeae4b073aa335b6040516001600160a01b03909116815260200160405180910390a1565b600880546001600160a01b038381166101008181027fffffffffffffffffffffff0000000000000000000000000000000000000000ff85161790945560405193909204169182907f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e090600090a35050565b60085460ff16156109ed5760405162461bcd60e51b815260206004820152601060248201527f5061757361626c653a20706175736564000000000000000000000000000000006044820152606401610adc565b600080611274846040517f19457468657265756d205369676e6564204d6573736167653a0a3332000000006020820152603c8101829052600090605c01604051602081830303815290604052805190602001209050919050565b6009549091506001600160a01b031661128d82856115ff565b6001600160a01b031614949350505050565b60008054908290036112dd576040517fb562e8dd00000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b6112ea6000848385611097565b6001600160a01b03831660008181526005602090815260408083208054680100000000000000018802019055848352600490915281206001851460e11b4260a01b178317905582840190839083907fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef8180a4600183015b81811461139957808360007fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef600080a4600101611361565b50816000036113d4576040517f2e07630000000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b60005550505050565b6113e56111c7565b6008805460ff191660011790557f62e78cea01bee320cd4e420270b5ea74000d11b0c9f74754ebdbfc544b05a2586111393390565b6040517f150b7a020000000000000000000000000000000000000000000000000000000081526000906001600160a01b0385169063150b7a0290611468903390899088908890600401611d0a565b6020604051808303816000875af19250505080156114a3575060408051601f3d908101601f191682019092526114a091810190611d46565b60015b61151a573d8080156114d1576040519150601f19603f3d011682016040523d82523d6000602084013e6114d6565b606091505b508051600003611512576040517fd1a57ed600000000000000000000000000000000000000000000000000000000815260040160405180910390fd5b805181602001fd5b7fffffffff00000000000000000000000000000000000000000000000000000000167f150b7a02000000000000000000000000000000000000000000000000000000001490505b949350505050565b606060a06040510180604052602081039150506000815280825b600183039250600a81066030018353600a9004806115835750819003601f19909101908152919050565b60085460ff166109ed5760405162461bcd60e51b815260206004820152601460248201527f5061757361626c653a206e6f74207061757365640000000000000000000000006044820152606401610adc565b60008060008061160e8561167e565b6040805160008152602081018083528b905260ff8316918101919091526060810184905260808101839052929550909350915060019060a0016020604051602081039080840390855afa158015611669573d6000803e3d6000fd5b5050604051601f190151979650505050505050565b600080600083516041146116d45760405162461bcd60e51b815260206004820152601860248201527f696e76616c6964207369676e6174757265206c656e67746800000000000000006044820152606401610adc565b50505060208101516040820151606090920151909260009190911a90565b7fffffffff0000000000000000000000000000000000000000000000000000000081168114610fb457600080fd5b60006020828403121561173257600080fd5b813561105c816116f2565b60005b83811015611758578181015183820152602001611740565b50506000910152565b6000815180845261177981602086016020860161173d565b601f01601f19169290920160200192915050565b60208152600061105c6020830184611761565b6000602082840312156117b257600080fd5b5035919050565b80356001600160a01b03811681146117d057600080fd5b919050565b600080604083850312156117e857600080fd5b6117f1836117b9565b946020939093013593505050565b60008060006060848603121561181457600080fd5b61181d846117b9565b925061182b602085016117b9565b9150604084013590509250925092565b60006020828403121561184d57600080fd5b61105c826117b9565b6000806020838503121561186957600080fd5b823567ffffffffffffffff8082111561188157600080fd5b818501915085601f83011261189557600080fd5b8135818111156118a457600080fd5b8660208285010111156118b657600080fd5b60209290920196919550909350505050565b600080604083850312156118db57600080fd5b6118e4836117b9565b9150602083013580151581146118f957600080fd5b809150509250929050565b634e487b7160e01b600052604160045260246000fd5b600067ffffffffffffffff8084111561193557611935611904565b604051601f8501601f19908116603f0116810190828211818310171561195d5761195d611904565b8160405280935085815286868601111561197657600080fd5b858560208301376000602087830101525050509392505050565b600080600080608085870312156119a657600080fd5b6119af856117b9565b93506119bd602086016117b9565b925060408501359150606085013567ffffffffffffffff8111156119e057600080fd5b8501601f810187136119f157600080fd5b611a008782356020840161191a565b91505092959194509250565b600060208284031215611a1e57600080fd5b813567ffffffffffffffff811115611a3557600080fd5b8201601f81018413611a4657600080fd5b6115618482356020840161191a565b60008060408385031215611a6857600080fd5b611a71836117b9565b9150611a7f602084016117b9565b90509250929050565b600181811c90821680611a9c57607f821691505b602082108103611abc57634e487b7160e01b600052602260045260246000fd5b50919050565b634e487b7160e01b600052601160045260246000fd5b600061ffff808316818103611aef57611aef611ac2565b6001019392505050565b61ffff828116828216039080821115611b1457611b14611ac2565b5092915050565b61ffff8416815260406020820152816040820152818360608301376000818301606090810191909152601f909201601f1916010192915050565b601f821115610a0a57600081815260208120601f850160051c81016020861015611b7c5750805b601f850160051c820191505b818110156109d557828155600101611b88565b815167ffffffffffffffff811115611bb557611bb5611904565b611bc981611bc38454611a88565b84611b55565b602080601f831160018114611bfe5760008415611be65750858301515b600019600386901b1c1916600185901b1785556109d5565b600085815260208120601f198616915b82811015611c2d57888601518255948401946001909101908401611c0e565b5085821015611c4b5787850151600019600388901b60f8161c191681555b5050505050600190811b01905550565b6000808454611c6981611a88565b60018281168015611c815760018114611c9657611cc5565b60ff1984168752821515830287019450611cc5565b8860005260208060002060005b85811015611cbc5781548a820152908401908201611ca3565b50505082870194505b505050508351611cd981836020880161173d565b7f2e6a736f6e0000000000000000000000000000000000000000000000000000009101908152600501949350505050565b60006001600160a01b03808716835280861660208401525083604083015260806060830152611d3c6080830184611761565b9695505050505050565b600060208284031215611d5857600080fd5b815161105c816116f256fea26469706673582212206ac11bae505da63a1b91b0d8c7e19fc6603a938020e92fbe046cb538626b2dde64736f6c63430008110033000000000000000000000000000000000000000000000000000000000000270d0000000000000000000000000000000000000000000000000000000000000060000000000000000000000000d0713149c17f63b64ab13504e6fac896dde252cc0000000000000000000000000000000000000000000000000000000000000036697066733a2f2f516d54647758596743676a557355444c37334139436e3867547a645a4c637170787a62426243576f6b69376874342f00000000000000000000

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

000000000000000000000000000000000000000000000000000000000000270d0000000000000000000000000000000000000000000000000000000000000060000000000000000000000000d0713149c17f63b64ab13504e6fac896dde252cc0000000000000000000000000000000000000000000000000000000000000036697066733a2f2f516d54647758596743676a557355444c37334139436e3867547a645a4c637170787a62426243576f6b69376874342f00000000000000000000

-----Decoded View---------------
Arg [0] : _maxSupply (uint256): 9997
Arg [1] : baseURI_ (string): ipfs://QmTdwXYgCgjUsUDL73A9Cn8gTzdZLcqpxzbBbCWoki7ht4/
Arg [2] : _signer (address): 0xd0713149c17f63b64AB13504E6FaC896DDe252Cc

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000000000000270d
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [2] : 000000000000000000000000d0713149c17f63b64ab13504e6fac896dde252cc
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000036
Arg [4] : 697066733a2f2f516d54647758596743676a557355444c37334139436e386754
Arg [5] : 7a645a4c637170787a62426243576f6b69376874342f00000000000000000000