Contract

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 ^0.8.4;

import './ERC721A/ERC721A.sol';

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/interfaces/IERC2981.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";

contract TheUnderworld is ERC721A, IERC2981, Ownable {
    using Strings for uint256;

    // Defining state variables for contract
    uint256 public maxSupply;  // Maximum tokens that can be minted
    uint256 public price;  // Price per token
    address public treasury;  // Address to receive mint funds

    // Royalty variables for any marketplaces that honour this for secondary sales
    address public royaltiesRecipient;  // Address to receive royalties, for exchanges that honour this
    uint256 public royaltiesPercentage;

    // Marketplace blocklist
    mapping(address => bool) public operatorBlocklist;

    // URI related state variables
    string public contractURI;
    string public baseURI;

    // Control variables to enable or disable minting
    bool public mintingEnabled = false;

    // Add these new state variables
    mapping(uint256 => bool) public claimedTokens;
    address public snappySquealContract;

    constructor(address _treasury, address _royaltiesRecipient, address _snappySquealContract)
        ERC721A("The Underworld ", "UNDERWORLD")
        Ownable(msg.sender)
    {
        require(_treasury != address(0), "Treasury address must be valid");
        require(_royaltiesRecipient != address(0), "Royalties address must be valid");
        require(_snappySquealContract != address(0), "SnappySqueal contract address must be valid");
        treasury = _treasury;
        royaltiesRecipient = _royaltiesRecipient;
        snappySquealContract = _snappySquealContract;
        maxSupply = 2222;
        price = 0.0069 ether;
        royaltiesPercentage = 10; // 10%
    }

    function mint(address _to, uint256 quantity, uint256[] memory snappySquealTokenIds) external payable {
        require(mintingEnabled, "Minting has not been enabled");
        uint256 _totalSupply = totalSupply();
        require(_totalSupply + quantity <= maxSupply, "Total Supply has been minted");
        require(quantity > 0, "Must specify at least 1 token");

        uint256 freeQuantity = 0;
        for (uint256 i = 0; i < snappySquealTokenIds.length; i++) {
            require(IERC721(snappySquealContract).ownerOf(snappySquealTokenIds[i]) == _to, "Must own the SnappySqueal token");
            require(!claimedTokens[snappySquealTokenIds[i]], "SnappySqueal token already claimed");
            claimedTokens[snappySquealTokenIds[i]] = true;
            freeQuantity++;
        }

        require(freeQuantity <= quantity, "Free quantity cannot exceed total quantity");
        uint256 paidQuantity = quantity - freeQuantity;
        
        if (paidQuantity > 0) {
            require(msg.value >= price * paidQuantity, "Insufficient amount of ether sent");
        } else {
            require(msg.value == 0, "Ether sent for free mint");
        }

        _safeMint(_to, quantity);
    }

    // Function to set the base URI
    function setBaseURI(string memory _newBaseURI) public onlyOwner {
	    baseURI = _newBaseURI;
	}

    // Function to set the contract URI
	function setContractURI(string memory _newContractURI) public onlyOwner {
	    contractURI = _newContractURI;
	}

    // Function to toggle minting on and off
	function toggleMinting() external onlyOwner {
        mintingEnabled = !mintingEnabled;
    }

    // Overridden function to provide token URI
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString(),".json")) : "";
    }

    // Function to update the minting price
    function updatePrice(uint256 newPrice) external onlyOwner {
        price = newPrice;
    }

    // Function to update the treasury address
    function updateTreasuryAddress(address _treasury) external onlyOwner {
        treasury = _treasury;
    }

    // Function to update the total supply, but ensuring it can only be lowered
    function updateMaxSupply(uint256 newMaxSupply) external onlyOwner {
        require(newMaxSupply < maxSupply, "New max supply must be lower than current max supply");
        maxSupply = newMaxSupply;
    }

    // Function to get the number of tokens minted by a specific address
    function numberMinted(address owner) public view returns (uint256) {
        return _numberMinted(owner);
    }

    // Function that allows the owner of the contract to withdraw all Ether stored in the contract.
    function withdraw() public {
        uint256 balance = address(this).balance;
        // The low-level 'call' function is used here instead of 'transfer'.
        // This line sends the entire balance and also forwards all remaining gas, mitigating potential issues with receiving contracts.
        // It returns a boolean value indicating the success or failure of the operation, and any data returned by the call.
        (bool success, ) = payable(treasury).call{value: balance}("");
        require(success, "Withdrawal failed.");
    }

    // EIP2981 standard royalties
    function royaltyInfo(uint256 _tokenId, uint256 _salePrice) external view override returns (address receiver, uint256 royaltyAmount) {
        return (royaltiesRecipient, (_salePrice * royaltiesPercentage) / 100);
    }

    function updateRoyaltiesRecipient(address _royaltiesRecipient) external onlyOwner {
        royaltiesRecipient = _royaltiesRecipient;
    }

    function updateRoyaltiesPercentage(uint256 _royaltiesPercentage) external onlyOwner {
        royaltiesPercentage = _royaltiesPercentage;
    }

    // EIP2981 standard Interface return. Adds to ERC721A and ERC165 Interface returns.
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC721A, IERC165)
        returns (bool)
    {
        return (
            interfaceId == type(IERC2981).interfaceId ||
            super.supportsInterface(interfaceId)
        );
    }

    // Overridden function to provide base URI
    function _baseURI() internal view virtual override returns (string memory) {
        return baseURI;
    }

    // Overridden function to specify the starting token ID
    function _startTokenId() internal view virtual override returns (uint256) {
        return 1;
    }

    /*
    --
    The following are methods to block transfers to/from specific contracts (read: marketplaces).
    No longer using the filter registry due to OpenSea sunsetting support for it.
    --
    */

    // Function to check if an operator is allowed
    function isOperatorAllowed(address _contract) public view returns (bool) {
        return !operatorBlocklist[_contract];
    }

    // Function to update the blocklist mapping
    function updateOperatorBlocklist(address _contract, bool _blocked) public onlyOwner {
        operatorBlocklist[_contract] = _blocked;
    }

    function setApprovalForAll(address operator, bool approved) public override {
        require(isOperatorAllowed(operator), "Operator not allowed to perform this action");
        super.setApprovalForAll(operator, approved);
    }

    function approve(address operator, uint256 tokenId) public payable override {
        require(isOperatorAllowed(operator), "Operator not allowed to perform this action");
        super.approve(operator, tokenId);
    }

    function transferFrom(address from, address to, uint256 tokenId) public payable override {
        require(isOperatorAllowed(msg.sender), "Operator not allowed to perform this action");
        super.transferFrom(from, to, tokenId);
    }

    function safeTransferFrom(address from, address to, uint256 tokenId) public payable override {
        require(isOperatorAllowed(msg.sender), "Operator not allowed to perform this action");
        super.safeTransferFrom(from, to, tokenId);
    }

    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public payable override {
        require(isOperatorAllowed(msg.sender), "Operator not allowed to perform this action");
        super.safeTransferFrom(from, to, tokenId, data);
    }

    // Add a function to update the SnappySqueal contract address
    function updateSnappySquealContract(address _newSnappySquealContract) external onlyOwner {
        require(_newSnappySquealContract != address(0), "New SnappySqueal contract address must be valid");
        snappySquealContract = _newSnappySquealContract;
    }

}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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 {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling 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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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 v5.0.0) (interfaces/IERC2981.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../utils/introspection/IERC165.sol";

/**
 * @dev Interface for the NFT Royalty Standard.
 *
 * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
 * support for royalty payments across all NFT marketplaces and ecosystem participants.
 */
interface IERC2981 is IERC165 {
    /**
     * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
     * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view returns (address receiver, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.20;

import {IERC165} from "../../utils/introspection/IERC165.sol";

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
     *   a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
     *   {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
     *   a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * 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 address zero.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/Math.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    /**
     * @dev Muldiv operation overflow.
     */
    error MathOverflowedMulDiv();

    enum Rounding {
        Floor, // Toward negative infinity
        Ceil, // Toward positive infinity
        Trunc, // Toward zero
        Expand // Away from zero
    }

    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

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

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

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

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

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds towards infinity instead
     * of rounding towards zero.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        if (b == 0) {
            // Guarantee the same behavior as in a regular Solidity division.
            return a / b;
        }

        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
     * denominator == 0.
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
     * Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0 = x * y; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            if (denominator <= prod1) {
                revert MathOverflowedMulDiv();
            }

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator.
            // Always >= 1. See https://cs.stackexchange.com/q/138556/92363.

            uint256 twos = denominator & (0 - denominator);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
            // works in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
     * towards zero.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256 of a positive value rounded towards zero.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (unsignedRoundsUp(rounding) && 1 << (result << 3) < value ? 1 : 0);
        }
    }

    /**
     * @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
     */
    function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
        return uint8(rounding) % 2 == 1;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.20;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Strings.sol)

pragma solidity ^0.8.20;

import {Math} from "./math/Math.sol";
import {SignedMath} from "./math/SignedMath.sol";

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

    /**
     * @dev The `value` string doesn't fit in the specified `length`.
     */
    error StringsInsufficientHexLength(uint256 value, uint256 length);

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toStringSigned(int256 value) internal pure returns (string memory) {
        return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        uint256 localValue = value;
        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_DIGITS[localValue & 0xf];
            localValue >>= 4;
        }
        if (localValue != 0) {
            revert StringsInsufficientHexLength(value, length);
        }
        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);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.3.0
// 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()`.
 *
 * The `_sequentialUpTo()` function can be overriden to enable spot mints
 * (i.e. non-consecutive mints) for `tokenId`s greater than `_sequentialUpTo()`.
 *
 * 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;

    // The amount of tokens minted above `_sequentialUpTo()`.
    // We call these spot mints (i.e. non-sequential mints).
    uint256 private _spotMinted;

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

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

        if (_sequentialUpTo() < _startTokenId()) _revert(SequentialUpToTooSmall.selector);
    }

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

    /**
     * @dev Returns the starting token ID for sequential mints.
     *
     * Override this function to change the starting token ID for sequential mints.
     *
     * Note: The value returned must never change after any tokens have been minted.
     */
    function _startTokenId() internal view virtual returns (uint256) {
        return 0;
    }

    /**
     * @dev Returns the maximum token ID (inclusive) for sequential mints.
     *
     * Override this function to return a value less than 2**256 - 1,
     * but greater than `_startTokenId()`, to enable spot (non-sequential) mints.
     *
     * Note: The value returned must never change after any tokens have been minted.
     */
    function _sequentialUpTo() internal view virtual returns (uint256) {
        return type(uint256).max;
    }

    /**
     * @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 result) {
        // Counter underflow is impossible as `_burnCounter` cannot be incremented
        // more than `_currentIndex + _spotMinted - _startTokenId()` times.
        unchecked {
            // With spot minting, the intermediate `result` can be temporarily negative,
            // and the computation must be unchecked.
            result = _currentIndex - _burnCounter - _startTokenId();
            if (_sequentialUpTo() != type(uint256).max) result += _spotMinted;
        }
    }

    /**
     * @dev Returns the total amount of tokens minted in the contract.
     */
    function _totalMinted() internal view virtual returns (uint256 result) {
        // Counter underflow is impossible as `_currentIndex` does not decrement,
        // and it is initialized to `_startTokenId()`.
        unchecked {
            result = _currentIndex - _startTokenId();
            if (_sequentialUpTo() != type(uint256).max) result += _spotMinted;
        }
    }

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

    /**
     * @dev Returns the total number of tokens that are spot-minted.
     */
    function _totalSpotMinted() internal view virtual returns (uint256) {
        return _spotMinted;
    }

    // =============================================================
    //                    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.selector);
        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.selector);

        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 Returns whether the ownership slot at `index` is initialized.
     * An uninitialized slot does not necessarily mean that the slot has no owner.
     */
    function _ownershipIsInitialized(uint256 index) internal view virtual returns (bool) {
        return _packedOwnerships[index] != 0;
    }

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

    /**
     * @dev Returns the packed ownership data of `tokenId`.
     */
    function _packedOwnershipOf(uint256 tokenId) private view returns (uint256 packed) {
        if (_startTokenId() <= tokenId) {
            packed = _packedOwnerships[tokenId];

            if (tokenId > _sequentialUpTo()) {
                if (_packedOwnershipExists(packed)) return packed;
                _revert(OwnerQueryForNonexistentToken.selector);
            }

            // If the data at the starting slot does not exist, start the scan.
            if (packed == uint256(0)) {
                if (tokenId >= _currentIndex) _revert(OwnerQueryForNonexistentToken.selector);
                // 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, `tokenId` will not underflow.
                //
                // We can directly compare the packed value.
                // If the address is zero, packed will be zero.
                for (;;) {
                    unchecked {
                        packed = _packedOwnerships[--tokenId];
                    }
                    if (packed == uint256(0)) continue;
                    if (packed & _BITMASK_BURNED == uint256(0)) return packed;
                    // Otherwise, the token is burned, and we must revert.
                    // This handles the case of batch burned tokens, where only the burned bit
                    // of the starting slot is set, and remaining slots are left uninitialized.
                    _revert(OwnerQueryForNonexistentToken.selector);
                }
            }
            // Otherwise, the data exists and we can skip the scan.
            // This is possible because we have already achieved the target condition.
            // This saves 2143 gas on transfers of initialized tokens.
            // If the token is not burned, return `packed`. Otherwise, revert.
            if (packed & _BITMASK_BURNED == uint256(0)) return packed;
        }
        _revert(OwnerQueryForNonexistentToken.selector);
    }

    /**
     * @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. See {ERC721A-_approve}.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     */
    function approve(address to, uint256 tokenId) public payable virtual override {
        _approve(to, tokenId, true);
    }

    /**
     * @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.selector);

        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 result) {
        if (_startTokenId() <= tokenId) {
            if (tokenId > _sequentialUpTo()) return _packedOwnershipExists(_packedOwnerships[tokenId]);

            if (tokenId < _currentIndex) {
                uint256 packed;
                while ((packed = _packedOwnerships[tokenId]) == uint256(0)) --tokenId;
                result = packed & _BITMASK_BURNED == uint256(0);
            }
        }
    }

    /**
     * @dev Returns whether `packed` represents a token that exists.
     */
    function _packedOwnershipExists(uint256 packed) private pure returns (bool result) {
        assembly {
            // The following is equivalent to `owner != address(0) && burned == false`.
            // Symbolically tested.
            result := gt(and(packed, _BITMASK_ADDRESS), and(packed, _BITMASK_BURNED))
        }
    }

    /**
     * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.
     */
    function _isSenderApprovedOrOwner(
        uint256 approvedAddressValue,
        uint256 ownerMasked,
        uint256 msgSenderMasked
    ) private pure returns (bool result) {
        assembly {
            result := or(eq(msgSenderMasked, ownerMasked), eq(msgSenderMasked, approvedAddressValue))
        }
    }

    /**
     * @dev Returns the storage slot and value for the approved address of `tokenId` casted to a uint256.
     */
    function _getApprovedSlotAndValue(uint256 tokenId)
        private
        view
        returns (uint256 approvedAddressSlot, uint256 approvedAddressValue)
    {
        TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];
        // The following is equivalent to `approvedAddressValue = uint160(_tokenApprovals[tokenId].value)`.
        assembly {
            approvedAddressSlot := tokenApproval.slot
            approvedAddressValue := 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);
        uint256 fromMasked = uint160(from);

        if (uint160(prevOwnershipPacked) != fromMasked) _revert(TransferFromIncorrectOwner.selector);

        (uint256 approvedAddressSlot, uint256 approvedAddressValue) = _getApprovedSlotAndValue(tokenId);

        // The nested ifs save around 20+ gas over a compound boolean condition.
        if (!_isSenderApprovedOrOwner(approvedAddressValue, fromMasked, uint160(_msgSenderERC721A())))
            if (!isApprovedForAll(from, _msgSenderERC721A())) _revert(TransferCallerNotOwnerNorApproved.selector);

        _beforeTokenTransfers(from, to, tokenId, 1);

        assembly {
            if approvedAddressValue {
                sstore(approvedAddressSlot, 0) // Equivalent to `delete _tokenApprovals[tokenId]`.
            }
        }

        // 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 == uint256(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] == uint256(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;
                    }
                }
            }
        }

        // Mask to the lower 160 bits, in case the upper bits somehow aren't clean.
        uint256 toMasked = uint160(to);
        assembly {
            // 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.
                fromMasked, // `from`.
                toMasked, // `to`.
                tokenId // `tokenId`.
            )
        }
        if (toMasked == uint256(0)) _revert(TransferToZeroAddress.selector);

        _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.selector);
            }
    }

    /**
     * @dev Equivalent to `_batchTransferFrom(from, to, tokenIds)`.
     */
    function _batchTransferFrom(
        address from,
        address to,
        uint256[] memory tokenIds
    ) internal virtual {
        _batchTransferFrom(address(0), from, to, tokenIds);
    }

    /**
     * @dev Transfers `tokenIds` in batch from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenIds` tokens must be owned by `from`.
     * - `tokenIds` must be strictly ascending.
     * - If `by` is not `from`, it must be approved to move these tokens
     * by either {approve} or {setApprovalForAll}.
     *
     * `by` is the address that to check token approval for.
     * If token approval check is not needed, pass in `address(0)` for `by`.
     *
     * Emits a {Transfer} event for each transfer.
     */
    function _batchTransferFrom(
        address by,
        address from,
        address to,
        uint256[] memory tokenIds
    ) internal virtual {
        uint256 byMasked = uint160(by);
        uint256 fromMasked = uint160(from);
        uint256 toMasked = uint160(to);
        // Disallow transfer to zero address.
        if (toMasked == uint256(0)) _revert(TransferToZeroAddress.selector);
        // Whether `by` may transfer the tokens.
        bool mayTransfer = _orERC721A(byMasked == uint256(0), byMasked == fromMasked) || isApprovedForAll(from, by);

        // Early return if `tokenIds` is empty.
        if (tokenIds.length == uint256(0)) return;
        // The next `tokenId` to be minted (i.e. `_nextTokenId()`).
        uint256 end = _currentIndex;
        // Pointer to start and end (exclusive) of `tokenIds`.
        (uint256 ptr, uint256 ptrEnd) = _mdataERC721A(tokenIds);

        uint256 prevTokenId;
        uint256 prevOwnershipPacked;
        unchecked {
            do {
                uint256 tokenId = _mloadERC721A(ptr);
                uint256 miniBatchStart = tokenId;
                // Revert `tokenId` is out of bounds.
                if (_orERC721A(tokenId < _startTokenId(), end <= tokenId))
                    _revert(OwnerQueryForNonexistentToken.selector);
                // Revert if `tokenIds` is not strictly ascending.
                if (prevOwnershipPacked != 0)
                    if (tokenId <= prevTokenId) _revert(TokenIdsNotStrictlyAscending.selector);
                // Scan backwards for an initialized packed ownership slot.
                // ERC721A's invariant guarantees that there will always be an initialized slot as long as
                // the start of the backwards scan falls within `[_startTokenId() .. _nextTokenId())`.
                for (uint256 j = tokenId; (prevOwnershipPacked = _packedOwnerships[j]) == uint256(0); ) --j;
                // If the initialized slot is burned, revert.
                if (prevOwnershipPacked & _BITMASK_BURNED != 0) _revert(OwnerQueryForNonexistentToken.selector);
                // Check that `tokenId` is owned by `from`.
                if (uint160(prevOwnershipPacked) != fromMasked) _revert(TransferFromIncorrectOwner.selector);

                do {
                    (uint256 approvedAddressSlot, uint256 approvedAddressValue) = _getApprovedSlotAndValue(tokenId);
                    _beforeTokenTransfers(address(uint160(fromMasked)), address(uint160(toMasked)), tokenId, 1);
                    // Revert if the sender is not authorized to transfer the token.
                    if (!mayTransfer)
                        if (byMasked != approvedAddressValue) _revert(TransferCallerNotOwnerNorApproved.selector);
                    assembly {
                        if approvedAddressValue {
                            sstore(approvedAddressSlot, 0) // Equivalent to `delete _tokenApprovals[tokenId]`.
                        }
                        // Emit the `Transfer` event.
                        log4(0, 0, _TRANSFER_EVENT_SIGNATURE, fromMasked, toMasked, tokenId)
                    }

                    if (_mloadERC721A(ptr += 0x20) != ++tokenId) break;
                    if (ptr == ptrEnd) break;
                } while (_packedOwnerships[tokenId] == uint256(0));

                // Updates tokenId:
                // - `address` to the next owner.
                // - `startTimestamp` to the timestamp of transferring.
                // - `burned` to `false`.
                // - `nextInitialized` to `false`, as it is optional.
                _packedOwnerships[miniBatchStart] = _packOwnershipData(
                    address(uint160(toMasked)),
                    _nextExtraData(address(uint160(fromMasked)), address(uint160(toMasked)), prevOwnershipPacked)
                );
                uint256 miniBatchLength = tokenId - miniBatchStart;
                // Update the address data.
                _packedAddressData[address(uint160(fromMasked))] -= miniBatchLength;
                _packedAddressData[address(uint160(toMasked))] += miniBatchLength;
                // Initialize the next slot if needed.
                if (tokenId != end)
                    if (_packedOwnerships[tokenId] == uint256(0)) _packedOwnerships[tokenId] = prevOwnershipPacked;
                // Perform the after hook for the batch.
                _afterTokenTransfers(
                    address(uint160(fromMasked)),
                    address(uint160(toMasked)),
                    miniBatchStart,
                    miniBatchLength
                );
                // Set the `prevTokenId` for checking that the `tokenIds` is strictly ascending.
                prevTokenId = tokenId - 1;
            } while (ptr != ptrEnd);
        }
    }

    /**
     * @dev Safely transfers `tokenIds` in batch from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenIds` tokens must be owned by `from`.
     * - If `by` is not `from`, it must be approved to move these tokens
     * by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called for each transferred token.
     *
     * `by` is the address that to check token approval for.
     * If token approval check is not needed, pass in `address(0)` for `by`.
     *
     * Emits a {Transfer} event for each transfer.
     */
    function _safeBatchTransferFrom(
        address by,
        address from,
        address to,
        uint256[] memory tokenIds,
        bytes memory _data
    ) internal virtual {
        _batchTransferFrom(by, from, to, tokenIds);

        unchecked {
            if (to.code.length != 0) {
                for ((uint256 ptr, uint256 ptrEnd) = _mdataERC721A(tokenIds); ptr != ptrEnd; ptr += 0x20) {
                    if (!_checkContractOnERC721Received(from, to, _mloadERC721A(ptr), _data)) {
                        _revert(TransferToNonERC721ReceiverImplementer.selector);
                    }
                }
            }
        }
    }

    /**
     * @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 == uint256(0)) {
                _revert(TransferToNonERC721ReceiverImplementer.selector);
            }
            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 == uint256(0)) _revert(MintZeroQuantity.selector);

        _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:
            // - `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)
            );

            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);

            // Mask to the lower 160 bits, in case the upper bits somehow aren't clean.
            uint256 toMasked = uint160(to);

            if (toMasked == uint256(0)) _revert(MintToZeroAddress.selector);

            uint256 end = startTokenId + quantity;
            uint256 tokenId = startTokenId;

            if (end - 1 > _sequentialUpTo()) _revert(SequentialMintExceedsLimit.selector);

            do {
                assembly {
                    // 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`.
                        tokenId // `tokenId`.
                    )
                }
                // The `!=` check ensures that large values of `quantity`
                // that overflows uint256 will make the loop run out of gas.
            } 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 virtual {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) _revert(MintToZeroAddress.selector);
        if (quantity == uint256(0)) _revert(MintZeroQuantity.selector);
        if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) _revert(MintERC2309QuantityExceedsLimit.selector);

        _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)
            );

            if (startTokenId + quantity - 1 > _sequentialUpTo()) _revert(SequentialMintExceedsLimit.selector);

            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.selector);
                    }
                } while (index < end);
                // This prevents reentrancy to `_safeMint`.
                // It does not prevent reentrancy to `_safeMintSpot`.
                if (_currentIndex != end) revert();
            }
        }
    }

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

    /**
     * @dev Mints a single token at `tokenId`.
     *
     * Note: A spot-minted `tokenId` that has been burned can be re-minted again.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` must be greater than `_sequentialUpTo()`.
     * - `tokenId` must not exist.
     *
     * Emits a {Transfer} event for each mint.
     */
    function _mintSpot(address to, uint256 tokenId) internal virtual {
        if (tokenId <= _sequentialUpTo()) _revert(SpotMintTokenIdTooSmall.selector);
        uint256 prevOwnershipPacked = _packedOwnerships[tokenId];
        if (_packedOwnershipExists(prevOwnershipPacked)) _revert(TokenAlreadyExists.selector);

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

        // Overflows are incredibly unrealistic.
        // The `numberMinted` for `to` is incremented by 1, and has a max limit of 2**64 - 1.
        // `_spotMinted` is incremented by 1, and has a max limit of 2**256 - 1.
        unchecked {
            // Updates:
            // - `address` to the owner.
            // - `startTimestamp` to the timestamp of minting.
            // - `burned` to `false`.
            // - `nextInitialized` to `true` (as `quantity == 1`).
            _packedOwnerships[tokenId] = _packOwnershipData(
                to,
                _nextInitializedFlag(1) | _nextExtraData(address(0), to, prevOwnershipPacked)
            );

            // Updates:
            // - `balance += 1`.
            // - `numberMinted += 1`.
            //
            // We can directly add to the `balance` and `numberMinted`.
            _packedAddressData[to] += (1 << _BITPOS_NUMBER_MINTED) | 1;

            // Mask to the lower 160 bits, in case the upper bits somehow aren't clean.
            uint256 toMasked = uint160(to);

            if (toMasked == uint256(0)) _revert(MintToZeroAddress.selector);

            assembly {
                // 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`.
                    tokenId // `tokenId`.
                )
            }

            ++_spotMinted;
        }

        _afterTokenTransfers(address(0), to, tokenId, 1);
    }

    /**
     * @dev Safely mints a single token at `tokenId`.
     *
     * Note: A spot-minted `tokenId` that has been burned can be re-minted again.
     *
     * Requirements:
     *
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}.
     * - `tokenId` must be greater than `_sequentialUpTo()`.
     * - `tokenId` must not exist.
     *
     * See {_mintSpot}.
     *
     * Emits a {Transfer} event.
     */
    function _safeMintSpot(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mintSpot(to, tokenId);

        unchecked {
            if (to.code.length != 0) {
                uint256 currentSpotMinted = _spotMinted;
                if (!_checkContractOnERC721Received(address(0), to, tokenId, _data)) {
                    _revert(TransferToNonERC721ReceiverImplementer.selector);
                }
                // This prevents reentrancy to `_safeMintSpot`.
                // It does not prevent reentrancy to `_safeMint`.
                if (_spotMinted != currentSpotMinted) revert();
            }
        }
    }

    /**
     * @dev Equivalent to `_safeMintSpot(to, tokenId, '')`.
     */
    function _safeMintSpot(address to, uint256 tokenId) internal virtual {
        _safeMintSpot(to, tokenId, '');
    }

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

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

    /**
     * @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:
     *
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function _approve(
        address to,
        uint256 tokenId,
        bool approvalCheck
    ) internal virtual {
        address owner = ownerOf(tokenId);

        if (approvalCheck && _msgSenderERC721A() != owner)
            if (!isApprovedForAll(owner, _msgSenderERC721A())) {
                _revert(ApprovalCallerNotOwnerNorApproved.selector);
            }

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

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

        uint256 fromMasked = uint160(prevOwnershipPacked);
        address from = address(uint160(fromMasked));

        (uint256 approvedAddressSlot, uint256 approvedAddressValue) = _getApprovedSlotAndValue(tokenId);

        if (approvalCheck) {
            // The nested ifs save around 20+ gas over a compound boolean condition.
            if (!_isSenderApprovedOrOwner(approvedAddressValue, fromMasked, uint160(_msgSenderERC721A())))
                if (!isApprovedForAll(from, _msgSenderERC721A())) _revert(TransferCallerNotOwnerNorApproved.selector);
        }

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

        assembly {
            if approvedAddressValue {
                sstore(approvedAddressSlot, 0) // Equivalent to `delete _tokenApprovals[tokenId]`.
            }
        }

        // 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 == uint256(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] == uint256(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 + _spotMinted` times.
        unchecked {
            _burnCounter++;
        }
    }

    /**
     * @dev Destroys `tokenIds`.
     * Approvals are not cleared when tokenIds are burned.
     *
     * Requirements:
     *
     * - `tokenIds` must exist.
     * - `tokenIds` must be strictly ascending.
     * - `by` must be approved to burn these tokens by either {approve} or {setApprovalForAll}.
     *
     * `by` is the address that to check token approval for.
     * If token approval check is not needed, pass in `address(0)` for `by`.
     *
     * Emits a {Transfer} event for each token burned.
     */
    function _batchBurn(address by, uint256[] memory tokenIds) internal virtual {
        // Early return if `tokenIds` is empty.
        if (tokenIds.length == uint256(0)) return;
        // The next `tokenId` to be minted (i.e. `_nextTokenId()`).
        uint256 end = _currentIndex;
        // Pointer to start and end (exclusive) of `tokenIds`.
        (uint256 ptr, uint256 ptrEnd) = _mdataERC721A(tokenIds);

        uint256 prevOwnershipPacked;
        address prevTokenOwner;
        uint256 prevTokenId;
        bool mayBurn;
        unchecked {
            do {
                uint256 tokenId = _mloadERC721A(ptr);
                uint256 miniBatchStart = tokenId;
                // Revert `tokenId` is out of bounds.
                if (_orERC721A(tokenId < _startTokenId(), end <= tokenId))
                    _revert(OwnerQueryForNonexistentToken.selector);
                // Revert if `tokenIds` is not strictly ascending.
                if (prevOwnershipPacked != 0)
                    if (tokenId <= prevTokenId) _revert(TokenIdsNotStrictlyAscending.selector);
                // Scan backwards for an initialized packed ownership slot.
                // ERC721A's invariant guarantees that there will always be an initialized slot as long as
                // the start of the backwards scan falls within `[_startTokenId() .. _nextTokenId())`.
                for (uint256 j = tokenId; (prevOwnershipPacked = _packedOwnerships[j]) == uint256(0); ) --j;
                // If the initialized slot is burned, revert.
                if (prevOwnershipPacked & _BITMASK_BURNED != 0) _revert(OwnerQueryForNonexistentToken.selector);

                address tokenOwner = address(uint160(prevOwnershipPacked));
                if (tokenOwner != prevTokenOwner) {
                    prevTokenOwner = tokenOwner;
                    mayBurn = _orERC721A(by == address(0), tokenOwner == by) || isApprovedForAll(tokenOwner, by);
                }

                do {
                    (uint256 approvedAddressSlot, uint256 approvedAddressValue) = _getApprovedSlotAndValue(tokenId);
                    _beforeTokenTransfers(tokenOwner, address(0), tokenId, 1);
                    // Revert if the sender is not authorized to transfer the token.
                    if (!mayBurn)
                        if (uint160(by) != approvedAddressValue) _revert(TransferCallerNotOwnerNorApproved.selector);
                    assembly {
                        if approvedAddressValue {
                            sstore(approvedAddressSlot, 0) // Equivalent to `delete _tokenApprovals[tokenId]`.
                        }
                        // Emit the `Transfer` event.
                        log4(0, 0, _TRANSFER_EVENT_SIGNATURE, and(_BITMASK_ADDRESS, tokenOwner), 0, tokenId)
                    }
                    if (_mloadERC721A(ptr += 0x20) != ++tokenId) break;
                    if (ptr == ptrEnd) break;
                } while (_packedOwnerships[tokenId] == uint256(0));

                // Updates tokenId:
                // - `address` to the same `tokenOwner`.
                // - `startTimestamp` to the timestamp of transferring.
                // - `burned` to `true`.
                // - `nextInitialized` to `false`, as it is optional.
                _packedOwnerships[miniBatchStart] = _packOwnershipData(
                    tokenOwner,
                    _BITMASK_BURNED | _nextExtraData(tokenOwner, address(0), prevOwnershipPacked)
                );
                uint256 miniBatchLength = tokenId - miniBatchStart;
                // Update the address data.
                _packedAddressData[tokenOwner] += (miniBatchLength << _BITPOS_NUMBER_BURNED) - miniBatchLength;
                // Initialize the next slot if needed.
                if (tokenId != end)
                    if (_packedOwnerships[tokenId] == uint256(0)) _packedOwnerships[tokenId] = prevOwnershipPacked;
                // Perform the after hook for the batch.
                _afterTokenTransfers(tokenOwner, address(0), miniBatchStart, miniBatchLength);
                // Set the `prevTokenId` for checking that the `tokenIds` is strictly ascending.
                prevTokenId = tokenId - 1;
            } while (ptr != ptrEnd);
            // Increment the overall burn counter.
            _burnCounter += tokenIds.length;
        }
    }

    // =============================================================
    //                     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 == uint256(0)) _revert(OwnershipNotInitializedForExtraData.selector);
        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;
    }

    // =============================================================
    //                        PRIVATE HELPERS
    // =============================================================

    /**
     * @dev Returns a memory pointer to the start of `a`'s data.
     */
    function _mdataERC721A(uint256[] memory a) private pure returns (uint256 start, uint256 end) {
        assembly {
            start := add(a, 0x20)
            end := add(start, shl(5, mload(a)))
        }
    }

    /**
     * @dev Returns the uint256 at `p` in memory.
     */
    function _mloadERC721A(uint256 p) private pure returns (uint256 result) {
        assembly {
            result := mload(p)
        }
    }

    /**
     * @dev Branchless boolean or.
     */
    function _orERC721A(bool a, bool b) private pure returns (bool result) {
        assembly {
            result := or(iszero(iszero(a)), iszero(iszero(b)))
        }
    }

    // =============================================================
    //                       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)
        }
    }

    /**
     * @dev For more efficient reverts.
     */
    function _revert(bytes4 errorSelector) internal pure {
        assembly {
            mstore(0x00, errorSelector)
            revert(0x00, 0x04)
        }
    }
}

// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.3.0
// 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();

    /**
     * The `tokenIds` must be strictly ascending.
     */
    error TokenIdsNotStrictlyAscending();

    /**
     * `_sequentialUpTo()` must be greater than `_startTokenId()`.
     */
    error SequentialUpToTooSmall();

    /**
     * The `tokenId` of a sequential mint exceeds `_sequentialUpTo()`.
     */
    error SequentialMintExceedsLimit();

    /**
     * Spot minting requires a `tokenId` greater than `_sequentialUpTo()`.
     */
    error SpotMintTokenIdTooSmall();

    /**
     * Cannot mint over a token that already exists.
     */
    error TokenAlreadyExists();

    /**
     * The feature is not compatible with spot mints.
     */
    error NotCompatibleWithSpotMints();

    // =============================================================
    //                            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": 10000
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_treasury","type":"address"},{"internalType":"address","name":"_royaltiesRecipient","type":"address"},{"internalType":"address","name":"_snappySquealContract","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":"NotCompatibleWithSpotMints","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"OwnershipNotInitializedForExtraData","type":"error"},{"inputs":[],"name":"SequentialMintExceedsLimit","type":"error"},{"inputs":[],"name":"SequentialUpToTooSmall","type":"error"},{"inputs":[],"name":"SpotMintTokenIdTooSmall","type":"error"},{"inputs":[],"name":"TokenAlreadyExists","type":"error"},{"inputs":[],"name":"TokenIdsNotStrictlyAscending","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":"operator","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":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"claimedTokens","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"contractURI","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":"_contract","type":"address"}],"name":"isOperatorAllowed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"quantity","type":"uint256"},{"internalType":"uint256[]","name":"snappySquealTokenIds","type":"uint256[]"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"mintingEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"numberMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"operatorBlocklist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"royaltiesPercentage","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"royaltiesRecipient","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"royaltyAmount","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":"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":[{"internalType":"string","name":"_newBaseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_newContractURI","type":"string"}],"name":"setContractURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"snappySquealContract","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":"toggleMinting","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":"result","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":"treasury","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"newMaxSupply","type":"uint256"}],"name":"updateMaxSupply","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_contract","type":"address"},{"internalType":"bool","name":"_blocked","type":"bool"}],"name":"updateOperatorBlocklist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newPrice","type":"uint256"}],"name":"updatePrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_royaltiesPercentage","type":"uint256"}],"name":"updateRoyaltiesPercentage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_royaltiesRecipient","type":"address"}],"name":"updateRoyaltiesRecipient","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newSnappySquealContract","type":"address"}],"name":"updateSnappySquealContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_treasury","type":"address"}],"name":"updateTreasuryAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000afb5cc55c672c123d5803a2352382d33aca65b95000000000000000000000000afb5cc55c672c123d5803a2352382d33aca65b95000000000000000000000000918ec957bc671da714ac80cf92c8ddefac9f5225

-----Decoded View---------------
Arg [0] : _treasury (address): 0xAfb5cc55C672c123D5803A2352382d33acA65B95
Arg [1] : _royaltiesRecipient (address): 0xAfb5cc55C672c123D5803A2352382d33acA65B95
Arg [2] : _snappySquealContract (address): 0x918Ec957bC671Da714Ac80cf92C8DdEfAc9F5225

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000afb5cc55c672c123d5803a2352382d33aca65b95
Arg [1] : 000000000000000000000000afb5cc55c672c123d5803a2352382d33aca65b95
Arg [2] : 000000000000000000000000918ec957bc671da714ac80cf92c8ddefac9f5225