Contract 0x7a8dA5Abc06148dEc5c7ceaD43eF4b5f737Eaab0 2

 
 
Txn Hash
Method
Block
From
To
Value
0x8759b6ff8272a11903bc3a41c9f92cf9460b05212330bfffe07063fe9fe10f5fSet Approval For...161018942022-12-03 4:27:1118 hrs 43 mins ago0xe8ef7bce7e36097c666d3ae681d8c9f90f08baca IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.0005542612.04442573
0xd082c1c0a0ae934c1298eb91ff8a14f611ecf7a878197874896b03a2901343edSet Approval For...160800462022-11-30 3:13:353 days 19 hrs ago0x49d5a70ece0589424309054649f6324d921facd6 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00061133 13.28472857
0x6544fad5a3a386793e9b7d695780dee0b1e688782fc1b2913a154b20e7785b5dTransfer From160654962022-11-28 2:28:475 days 20 hrs ago0xdc56371676a4fa8346df05ce286a81ab372ff1a0 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.000765249.21890367
0x1c105423238b33770972d76feecc9bd9951d9079b66133568ef272bfe1dcaf6eSet Approval For...160573232022-11-26 23:05:117 days 5 mins ago0x4f4b5d02e50e2224258a10354fa6ec054b4fb939 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00045017 9.78259505
0xa1c6d3f9a672f00e8f1764eb10759d8ec33f8953f1be042bd2f02e593a93252bSet Approval For...160432422022-11-24 23:52:118 days 23 hrs agoENS Name cedkorm.eth IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.000511 11.10446075
0xc7623ab79ba32e7a51d0014a01d4aa06894f39c5af23a72973b11d76dcf82256Set Approval For...159921592022-11-17 20:34:5916 days 2 hrs ago0x451863ba13bc060dec6432eec115391108142b58 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00100202 21.77462669
0xd84555547b0bee31585f9ee745b83a5065a938c64f1fc3845c6f1fcb9a4b3660Set Approval For...159883422022-11-17 7:46:3516 days 15 hrs ago0x51392e003abb52efb825e5cfd5608fbafe792540 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.000574 12.47356251
0x510b722cc35832f9e9b414034e0e16b68a9aa00293bf32cf6260e1480ca00e89Set Approval For...159877682022-11-17 5:51:2316 days 17 hrs ago0x3618909ed0c6fe1e8c240b4929cec3e9e5fe9de5 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.0005665512.31166235
0xd34ccc8d64e2a61c4ee21fa8246874e0173489c121d97313b716ec6c1dc8cb4cSet Approval For...159871132022-11-17 3:39:5916 days 19 hrs ago0x2168808820f0bd43a780d3306c90549fc463485f IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.0006568814.27452635
0x233ad6251cd01b7cfc068d815c2db0e1eee24e94a9b80449cc5d1410a7183be8Set Approval For...159868382022-11-17 2:44:4716 days 20 hrs ago0x93059a1683f5d250e739811ae783b06a6e89eeb2 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00061214 13.30229188
0xc9aa985497f96fd122c3858590e2119615e674322758f74d81b7c5e1ae217686Set Approval For...159833622022-11-16 15:04:3517 days 8 hrs ago0x5cf9d3585219cc142e0e3260d035609d9df42a5a IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00084069 18.26889968
0x6b0cf3a1c5df2ccd12af131a3a5572bca46244bff4b86d88c21cb3760a8a3026Set Approval For...159738852022-11-15 7:16:1118 days 15 hrs ago0x3843845731be3cadaf77307cbbfd92323fefbcab IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00064196 13.95039543
0xd6fcb633c17dc249d547b962af31667127fcbf7c9ea47ad4288452b00b640111Set Approval For...159632722022-11-13 19:43:4720 days 3 hrs agoENS Name l3asturd.eth IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00096507 20.97171671
0x9ce12cc52d89406147bb82fbc05eca5364c03f875eee9f5091f4ac55e1f082eaSet Approval For...159548712022-11-12 15:36:5921 days 7 hrs ago0x1678fa6b1f7e9eccf1446951ea835b945f75adc2 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00064594 14.03681075
0x850ab776acc65069b801187003344bcd24f531cfc11ba4544d11742a50bcf385Set Approval For...159493032022-11-11 20:57:4722 days 2 hrs ago0x7ca1c39bb9ca718b3c232bbf34357ebdca6be4c2 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00071654 15.57089915
0x17c098363a762b7862e18d36214f789521bef57fecc0f42342d351794b7fcf4bSet Approval For...159423402022-11-10 21:35:3523 days 1 hr ago0x7cee7d232dcae23fd673ea798078fde6c5a11c3a IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00099104 21.536046
0x6291b1d72e2731ca11006db826f7756ff7cb32c048defe5ec253fbe36b48d8e3Set Approval For...159388482022-11-10 9:53:1123 days 13 hrs ago0x57d38a1eca9e2683978c481c81a24616e12bdb48 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00096221 20.90944186
0x8cac11780152353b1fda55d5fbed7ce84fdca1ba4459967b2fab335ef29a76deSet Approval For...159386872022-11-10 9:20:4723 days 13 hrs ago0x4f8fa34f4a35dd4e589506f99fc7f44a52261379 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00100656 21.8733651
0x31fd8422e31fc42005b02680765ef7af6adc8b633feedecc11e515a7a028bc1cSet Approval For...159250712022-11-08 11:39:5925 days 11 hrs ago0x23241e3b2e2e9f54f2ef2fc4a568cf2c8d46584b IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.0006846714.87832585
0x11236ad1fbe609ad2992bd55b45d58885437fb7352febfd64651eb57a2f224e0Safe Transfer Fr...159247502022-11-08 10:35:2325 days 12 hrs ago0x9c7de0a482a4c18e353fe615ff9de54beabc7966 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00064676 13.09736431
0x1c10c4284667d304f7e286ccca8dd163e9d0ef45ae21276dca1ed1fb667c5f6dSafe Transfer Fr...159247452022-11-08 10:34:2325 days 12 hrs ago0x9c7de0a482a4c18e353fe615ff9de54beabc7966 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00083716 12.03200114
0x83ae03709bcf1373cc17444e6a08ae663373bbfd3dc6b79361676358b2970606Safe Transfer Fr...159247382022-11-08 10:32:5925 days 12 hrs ago0x9c7de0a482a4c18e353fe615ff9de54beabc7966 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00086875 12.25378438
0x3ce34f4b823bdbef355fef247eb5ac6296ae2b791e05809db921c9fe82ab7da2Safe Transfer Fr...159247352022-11-08 10:32:2325 days 12 hrs ago0x9c7de0a482a4c18e353fe615ff9de54beabc7966 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.00058542 12.40649429
0x6f08c5d76878d91019158626874ad6acc36eac7cd3ac2cf99f75f9d410317c29Set Approval For...159238682022-11-08 7:38:2325 days 15 hrs ago0x30b3c0c5dd5f09da7176ee056b125cc02ef5ffe3 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.0006228 13.5339976
0xfc7415667788f670c00420aa330b8aa3e10c05c4fabc96d6ec8f74b110ff83d3Set Approval For...159206292022-11-07 20:47:1126 days 2 hrs ago0x147342bed438198370cbc645f61a9d13af394f62 IN  0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00 Ether0.0006173823.64913681
[ Download CSV Export 
Latest 5 internal transactions
Parent Txn Hash Block From To Value
0xc31f2c7f4ed11dd1e50d085b73a5f76d1ac3efd526f5f7104e4d91be05720c82158134512022-10-23 21:19:1141 days 1 hr ago 0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00x6be5e7da4ad8523f9c622544a938f344a1f62cf51.71 Ether
0x4ecdfe611106d0f0d9f09d814be7b81dd02f99500b52676456b9204d3879794c157915642022-10-20 20:01:1144 days 3 hrs ago 0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00x6be5e7da4ad8523f9c622544a938f344a1f62cf511.9307 Ether
0x40bea4cb96d4febda2db14ce4b18d80dfaee3ec09a8cc4758b3064e79e478a0a157190162022-10-10 16:53:1154 days 6 hrs ago 0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00x6be5e7da4ad8523f9c622544a938f344a1f62cf538.1894 Ether
0xee03cd04250d46e7add1a04788bb7c107a64b959918552461a80553eebffe4d6156688102022-10-03 16:26:2361 days 6 hrs ago 0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00x6be5e7da4ad8523f9c622544a938f344a1f62cf549.1373 Ether
0x2c4285238cb60e41f9328989cd3f233b32fb40de1987ea4380b9cf9dd186d9b8156424522022-09-30 0:03:5964 days 23 hrs ago 0x7a8da5abc06148dec5c7cead43ef4b5f737eaab00x6be5e7da4ad8523f9c622544a938f344a1f62cf5137.598 Ether
[ Download CSV Export 
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
SeaDragons

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 7 : SeaDragons.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

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

contract SeaDragons is ERC721A, Ownable, Pausable {

    using Address for address payable;

    event ClaimAptosTokens(address indexed claimer, uint indexed amount, string indexed aptosWallet);

    struct Infos {
        uint256 regularCost;
        uint256 memberCost;
        uint256 whitelistCost;
        uint256 maxSupply;
        uint256 totalSupply;
        uint256 maxMintPerAddress;
        uint256 maxMintPerTx;
    }

    string metadata = "ipfs://QmVfpPWygypTXdik8e45hee7dcebPM9opkjCAPJPb69y9J";
    mapping(address => bool) public whitelistedAddresses;

    uint regularCost = 0.09 ether;
    uint whitelistCost = 0.0777 ether;
    uint maxSupply = 8800;
    uint maxPerTransaction = 50;

    constructor() ERC721A("SeaShrine VIP", "SeaDragon") {}

    function getInfo() public view returns (Infos memory) {
        Infos memory allInfos;
        allInfos.regularCost = regularCost;
        allInfos.memberCost = 0;
        allInfos.whitelistCost = whitelistCost;
        allInfos.maxSupply = maxSupply;
        allInfos.totalSupply = totalSupply();
        allInfos.maxMintPerTx = maxPerTransaction;
        allInfos.maxMintPerAddress = 0;

        return allInfos;
    }

    function setMetadata(string calldata _metadata) public onlyOwner {
        metadata = _metadata;
    }

    function isWhitelist(address _address) public view returns(bool) {
        return whitelistedAddresses[_address];
    }

    function setCost(uint256 _regularCost, uint256 _whitelistCost) public onlyOwner {
        regularCost = _regularCost;
        whitelistCost = _whitelistCost;
    }

    function mint(uint256 quantity) external payable whenNotPaused {
        require(quantity > 0, "need to mint at least 1 NFT");
        require(quantity <= canMint(msg.sender), "over max");
        uint256 supply = totalSupply();
        uint cost = mintCost(msg.sender);
        uint total = quantity * cost;
        require(total <= msg.value, "insufficient funds");
        _mint(msg.sender, quantity);
    }

    function canMint(address _address) public view virtual returns(uint256){
        uint leftToMint = maxSupply - totalSupply();
        if(leftToMint > maxPerTransaction) leftToMint = maxPerTransaction;
        return leftToMint;
    }

    function mintCost(address _address) public view returns (uint256) {
        require(_address != address(0), "not address 0");
        return isWhitelist(_address) ? whitelistCost : regularCost;
    }

    function addWhiteList(address[] calldata _addresses) public onlyOwner {
        uint len = _addresses.length;
        for(uint i = 0; i < len; i = unsafe_inc(i)) {
            whitelistedAddresses[_addresses[i]] = true;
        }        
    }

    function tokenURI(uint _tokenId) public view virtual override returns (string memory) {
        return metadata;
    }
    
    function addWhiteListAddress(address _address) public onlyOwner {
        whitelistedAddresses[_address] = true;
    }

    function unsafe_inc(uint x) private pure returns (uint) {
        unchecked { return x + 1; }
    }

    function requestMigration(uint256[] calldata tokens, string calldata aptosWallet) external {
        uint len = tokens.length;
        for(uint i = 0; i < len; i = unsafe_inc(i)){
            _burn(tokens[i], true);
        }
        emit ClaimAptosTokens(msg.sender, len, aptosWallet);
    }

    function withdraw() public onlyOwner{
        payable(msg.sender).sendValue(address(this).balance);
    }

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

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

File 2 of 7 : ERC721A.sol
// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity ^0.8.4;

import './IERC721A.sol';

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

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

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

    // Mask of an entry in packed address data.
    uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;

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

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

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

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

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

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

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

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

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

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

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

    // The maximum `quantity` that can be minted with {_mintERC2309}.
    // This limit is to prevent overflows on the address data entries.
    // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}
    // is required to cause an overflow, which is unrealistic.
    uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;

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

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

    // The next token ID to be minted.
    uint256 private _currentIndex;

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

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Returns the number of tokens in `owner`'s account.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        if (owner == address(0)) revert BalanceQueryForZeroAddress();
        return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
    }

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

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

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

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

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

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        // The interface IDs are constants representing the first 4 bytes
        // of the XOR of all function selectors in the interface.
        // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)
        // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)
        return
            interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
            interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
            interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
    }

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

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

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

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        if (!_exists(tokenId)) revert URIQueryForNonexistentToken();

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

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, it can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return '';
    }

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

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

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

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

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

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

        unchecked {
            if (_startTokenId() <= curr)
                if (curr < _currentIndex) {
                    uint256 packed = _packedOwnerships[curr];
                    // If not burned.
                    if (packed & _BITMASK_BURNED == 0) {
                        // Invariant:
                        // There will always be an initialized ownership slot
                        // (i.e. `ownership.addr != address(0) && ownership.burned == false`)
                        // before an unintialized ownership slot
                        // (i.e. `ownership.addr == address(0) && ownership.burned == false`)
                        // Hence, `curr` will not underflow.
                        //
                        // We can directly compare the packed value.
                        // If the address is zero, packed will be zero.
                        while (packed == 0) {
                            packed = _packedOwnerships[--curr];
                        }
                        return packed;
                    }
                }
        }
        revert OwnerQueryForNonexistentToken();
    }

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

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

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

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

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

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

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

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

        return _tokenApprovals[tokenId].value;
    }

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom}
     * for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _operatorApprovals[_msgSenderERC721A()][operator] = approved;
        emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
    }

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

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

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

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

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

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public payable virtual override {
        uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);

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

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

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

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

        _beforeTokenTransfers(from, to, tokenId, 1);

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

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

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

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

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

    /**
     * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public payable virtual override {
        safeTransferFrom(from, to, tokenId, '');
    }

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement
     * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public payable virtual override {
        transferFrom(from, to, tokenId);
        if (to.code.length != 0)
            if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
                revert TransferToNonERC721ReceiverImplementer();
            }
    }

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

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

    /**
     * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
     *
     * `from` - Previous owner of the given token ID.
     * `to` - Target address that will receive the token.
     * `tokenId` - Token ID to be transferred.
     * `_data` - Optional data to send along with the call.
     *
     * Returns whether the call correctly returned the expected magic value.
     */
    function _checkContractOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
            bytes4 retval
        ) {
            return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
        } catch (bytes memory reason) {
            if (reason.length == 0) {
                revert TransferToNonERC721ReceiverImplementer();
            } else {
                assembly {
                    revert(add(32, reason), mload(reason))
                }
            }
        }
    }

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

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

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

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

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

            uint256 toMasked;
            uint256 end = startTokenId + quantity;

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

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

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

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * This function is intended for efficient minting only during contract creation.
     *
     * It emits only one {ConsecutiveTransfer} as defined in
     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
     * instead of a sequence of {Transfer} event(s).
     *
     * Calling this function outside of contract creation WILL make your contract
     * non-compliant with the ERC721 standard.
     * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
     * {ConsecutiveTransfer} event is only permissible during contract creation.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `quantity` must be greater than 0.
     *
     * Emits a {ConsecutiveTransfer} event.
     */
    function _mintERC2309(address to, uint256 quantity) internal virtual {
        uint256 startTokenId = _currentIndex;
        if (to == address(0)) revert MintToZeroAddress();
        if (quantity == 0) revert MintZeroQuantity();
        if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();

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

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

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

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

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

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

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

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

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

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

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

        address from = address(uint160(prevOwnershipPacked));

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

File 3 of 7 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 4 of 7 : Pausable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

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

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

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

    bool private _paused;

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

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

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

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

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

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

File 5 of 7 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 6 of 7 : IERC721A.sol
// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs

pragma solidity ^0.8.4;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Returns the total number of tokens in existence.
     * Burned tokens will reduce the count.
     * To get the total number of tokens minted, please see {_totalMinted}.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);

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

    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

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

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

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

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

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

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

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {safeTransferFrom}
     * whenever possible.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token
     * by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external payable;

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

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

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

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

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

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

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

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

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

    /**
     * @dev Emitted when tokens in `fromTokenId` to `toTokenId`
     * (inclusive) is transferred from `from` to `to`, as defined in the
     * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
     *
     * See {_mintERC2309} for more details.
     */
    event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}

File 7 of 7 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[],"name":"MintERC2309QuantityExceedsLimit","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"OwnershipNotInitializedForExtraData","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"claimer","type":"address"},{"indexed":true,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"string","name":"aptosWallet","type":"string"}],"name":"ClaimAptosTokens","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":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[{"internalType":"address[]","name":"_addresses","type":"address[]"}],"name":"addWhiteList","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"addWhiteListAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"canMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getInfo","outputs":[{"components":[{"internalType":"uint256","name":"regularCost","type":"uint256"},{"internalType":"uint256","name":"memberCost","type":"uint256"},{"internalType":"uint256","name":"whitelistCost","type":"uint256"},{"internalType":"uint256","name":"maxSupply","type":"uint256"},{"internalType":"uint256","name":"totalSupply","type":"uint256"},{"internalType":"uint256","name":"maxMintPerAddress","type":"uint256"},{"internalType":"uint256","name":"maxMintPerTx","type":"uint256"}],"internalType":"struct SeaDragons.Infos","name":"","type":"tuple"}],"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":"_address","type":"address"}],"name":"isWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"quantity","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_address","type":"address"}],"name":"mintCost","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokens","type":"uint256[]"},{"internalType":"string","name":"aptosWallet","type":"string"}],"name":"requestMigration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_regularCost","type":"uint256"},{"internalType":"uint256","name":"_whitelistCost","type":"uint256"}],"name":"setCost","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_metadata","type":"string"}],"name":"setMetadata","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":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistedAddresses","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
Loading
Loading
Make sure to use the "Vote Down" button for any spammy posts, and the "Vote Up" for interesting conversations.

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.