Token

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 0.8.17;

/**
 * @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();

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

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

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

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

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

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

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

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

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

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

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

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

    // =============================================================
    //                            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;

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

    /**
     * @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;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the
     * zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

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

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

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

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

    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);

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

    /**
     * @dev Emitted when tokens in `fromTokenId` to `toTokenId`
     * (inclusive) is transferred from `from` to `to`, as defined in the
     * [ERC2309](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);
}


contract WojakRocks is IERC721A { 

    address private _owner;
    function owner() public view returns(address){
        return _owner;
    }

    modifier onlyOwner() { 
        require(_owner==msg.sender);
        _; 
    }

    uint256 public constant MAX_SUPPLY = 600;
    uint256 public constant MAX_FREE = 455;
    uint256 public constant MAX_FREE_PER_WALLET = 2;
    uint256 public constant COST = 0.001 ether;

    string private constant _name = "WojakRocks";
    string private constant _symbol = "WojakRocks";

    constructor() {
        _owner = msg.sender;
    }

    function mint(uint256 amount) external payable{
        address _caller = _msgSenderERC721A();

        require(totalSupply() + amount <= MAX_SUPPLY, "Sold Out");
        require(amount*COST <= msg.value, "Value to Low");

        _mint(_caller, amount);
    }

    function freeMint() external{
        address _caller = _msgSenderERC721A();
        uint256 amount = MAX_FREE_PER_WALLET;

        require(totalSupply() + amount <= MAX_FREE, "Freemint Sold Out");
        require(amount + _numberMinted(_caller) <= MAX_FREE_PER_WALLET, "Max per Wallet");

        _mint(_caller, amount);
    }

    // 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 tokenId of the next token to be minted.
    uint256 private _currentIndex = 0;

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


    // 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`
    mapping(uint256 => uint256) private _packedOwnerships;

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

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

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

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

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

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

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


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

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        if (_addressToUint256(owner) == 0) revert BalanceQueryForZeroAddress();
        return _packedAddressData[owner] & BITMASK_ADDRESS_DATA_ENTRY;
    }

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



    /**
     * Returns the auxillary 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);
    }

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

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

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

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

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

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

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

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
        return "ipfs://QmdGuo9zb2qMCXFMm7aNdqVmtXzdgbbiC34ySiEQeNvqFs";
    }

    /**
     * @dev Casts the address to uint256 without masking.
     */
    function _addressToUint256(address value) private pure returns (uint256 result) {
        assembly {
            result := value
        }
    }

    /**
     * @dev Casts the boolean to uint256 without branching.
     */
    function _boolToUint256(bool value) private pure returns (uint256 result) {
        assembly {
            result := value
        }
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = address(uint160(_packedOwnershipOf(tokenId)));
        if (to == owner) revert();

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

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

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

        return _tokenApprovals[tokenId];
    }

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

        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
            address from,
            address to,
            uint256 tokenId
            ) public virtual override {
        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
            address from,
            address to,
            uint256 tokenId
            ) public virtual override {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
            address from,
            address to,
            uint256 tokenId,
            bytes memory _data
            ) public virtual override {
        _transfer(from, to, tokenId);
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return
            _startTokenId() <= tokenId &&
            tokenId < _currentIndex;
    }

  

    /**
     * @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.
     */
    function _mint(address to, uint256 quantity) internal {
        uint256 startTokenId = _currentIndex;
        if (_addressToUint256(to) == 0) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();


        // Overflows are incredibly unrealistic.
        // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
        // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
        unchecked {
            // Updates:
            // - `balance += quantity`.
            // - `numberMinted += quantity`.
            //
            // We can directly add to the balance and number minted.
            _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] =
                _addressToUint256(to) |
                (block.timestamp << BITPOS_START_TIMESTAMP) |
                (_boolToUint256(quantity == 1) << BITPOS_NEXT_INITIALIZED);

            uint256 updatedIndex = startTokenId;
            uint256 end = updatedIndex + quantity;

            do {
                emit Transfer(address(0), to, updatedIndex++);
            } while (updatedIndex < end);

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

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
            address from,
            address to,
            uint256 tokenId
            ) private {

        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

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

        address approvedAddress = _tokenApprovals[tokenId];

        bool isApprovedOrOwner = (_msgSenderERC721A() == from ||
                isApprovedForAll(from, _msgSenderERC721A()) ||
                approvedAddress == _msgSenderERC721A());

        if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();


        // Clear approvals from the previous owner.
        if (_addressToUint256(approvedAddress) != 0) {
            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] =
                _addressToUint256(to) |
                (block.timestamp << BITPOS_START_TIMESTAMP) |
                BITMASK_NEXT_INITIALIZED;

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

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




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

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

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

         // Update the free memory pointer to allocate.
         mstore(0x40, ptr)

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

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

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

    function withdraw() external onlyOwner {
        uint256 balance = address(this).balance;
        payable(msg.sender).transfer(balance);
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"ApproveToCaller","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[],"name":"MintERC2309QuantityExceedsLimit","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"OwnershipNotInitializedForExtraData","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"fromTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"toTokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"ConsecutiveTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"COST","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_FREE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_FREE_PER_WALLET","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"freeMint","outputs":[],"stateMutability":"nonpayable","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":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"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":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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