Contract 0x91eEdA83433690056e22fe33F0E2FFc754bA1076 1

 
 
Txn Hash
Method
Block
From
To
Value
0x8124cdf33a32e1c7e1ca0c60e365e554a9df94f737b465a2b9c72ab5f1de252fSet Approval For...(pending)2023-02-02 5:03:162 days 6 hrs ago0xc33faff1b8e89c5a4f1b320ca1f95b394f52cb21 IN 0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether(Pending)(Pending)
0x2516156bb27665a912b105084d3e49304f31fb1fe5048019c3e320f661b639f6Safe Transfer Fr...165152032023-01-29 21:36:355 days 14 hrs agoENS Name bamasnake.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00164343 24.49962818
0x8eb79db0a8a173eaa7ceb7462db6fee8791a3c7b73e24d8330cd7be052237f89Set Approval For...165123782023-01-29 12:08:235 days 23 hrs ago0xdf985256c296dbba2a3786ab1c057f93b9c27f7a IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00075194 16.29943289
0x39e27a4ef1e0d230b7fabdb83b32222ef8c655580c57ea81f13aa062e3c21842Set Approval For...165040992023-01-28 8:24:117 days 3 hrs agoENS Name justawhile.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00068006 14.74146299
0x8479a5051df8d0056edbd445bb87430b4f2c0a742494c502dcf55ecd4623b0d7Set Approval For...165039852023-01-28 8:01:237 days 3 hrs agoENS Name xiyang.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00067656 14.66556736
0x86abc6c4f6fd186ccf74401069885e556578b0078c344bd09218862e0408454bSet Approval For...164823842023-01-25 7:36:2310 days 4 hrs agoENS Name ankitdas.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00068854 14.92530371
0x88922864ba4d56e84fa46ab847a9c7223c9248329bf07a123e94f2597414532eSafe Transfer Fr...164164842023-01-16 2:51:2319 days 9 hrs ago0x68868c6e1f2cec7758dc71a021c87ee9fead1956 IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0007464714.91604901
0x07feb84cdddcb9a6fd582b26b493b8591a6850eb1127ed9e1553e83936845493Safe Transfer Fr...164164832023-01-16 2:51:1119 days 9 hrs ago0x68868c6e1f2cec7758dc71a021c87ee9fead1956 IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0010731314.91604901
0x1f9a6b98258976202c42a2fae138db1e89cacab3a792e1599705f55a9ed886c9Set Approval For...164164802023-01-16 2:50:3519 days 9 hrs ago0xe176dc92015e7437b0cecaad5972a0da8526e06e IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0010408322.52058086
0x6737c76fa4c3bb0f03e12f5d2a9470e10274a021560d9498067da8f6934d2b61Set Approval For...164164692023-01-16 2:48:2319 days 9 hrs ago0xe176dc92015e7437b0cecaad5972a0da8526e06e IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0003776115.536552
0x8632c13153f03c46c16f04f0c7d8505ddae7ce17a24e7ca3caf6f1305f28a283Set Approval For...164161232023-01-16 1:38:4719 days 10 hrs ago0xe176dc92015e7437b0cecaad5972a0da8526e06e IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0011489624.86028135
0x9c90acd1f34985dae113b88411e398cd6299dcf9af1c42fb24b9af0af829c4d8Set Approval For...164116562023-01-15 10:38:2320 days 1 hr agoENS Name defibear.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00066996 14.52254778
0x10c2d038f1e304b7cb437848094a28a73977338a3146ad7d063054bdbddbdc8dSet Approval For...164114672023-01-15 10:00:1120 days 1 hr ago0xdcc0f9ae904fd127e6bb6cfd4405e324932373ff IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00078541 17.02499379
0x1a42a8fcfc8245ca3c17a874c86b7d8c33d4da3601c5e0044d2398bcca0033ffSet Approval For...164064622023-01-14 17:13:1120 days 18 hrs ago0x675358db8ef8a0704dd0939314fd7896ab8fa2e4 IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00128076 27.76237647
0x9a3a63b07fc16099e624b6b6e8f640c6dc308607418bef1e50907cc47a569323Set Approval For...164038452023-01-14 8:27:2321 days 3 hrs agoENS Name *.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00085388 18.50912166
0x5437c9864dea4315de865f585515b085b9420af0e402431b8346d4eac6b974f6Set Approval For...163940852023-01-12 23:45:4722 days 12 hrs ago0xefb1718244f4b3ce5a26745a73841b29c79c4c47 IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00097741 21.18696949
0x3d1feb265fc3519cee054513178184ce02f3268a3d602afad64e5bf412dc2b2eSet Approval For...163863922023-01-11 21:58:1123 days 13 hrs agoENS Name mihamir30.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00092889 20.13510833
0x00d71e58866e1b7c255b55d3e7a2cd63efa354eaa50d311715e916919fbd53afSet Approval For...163424032023-01-05 18:33:1129 days 17 hrs ago0x0467cd2e949ad97307b17db940c4e6e63a027401 IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00132676 28.75963593
0xc9cb8c729db297970bc03c19190221632e6cb5ee1daa0695bed2b6170763d8eeSet Approval For...163260262023-01-03 11:41:4732 days 12 mins agoENS Name jouichirou.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00038237 15.73247228
0x70fbb2e42635a0998d02f24b549f506fac050aafb6d584422af6c8884866ceb3Safe Transfer Fr...163259092023-01-03 11:18:2332 days 36 mins ago0xe176dc92015e7437b0cecaad5972a0da8526e06e IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0006186712.36233304
0x5a576ba248149b9ce29dc35c8660add6e0ad06c57853dbdcd81e20ba5af63636Safe Transfer Fr...163259082023-01-03 11:18:1132 days 36 mins ago0xe176dc92015e7437b0cecaad5972a0da8526e06e IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.0008853412.30592336
0xecf7788a08d17850540e77c110155d6df9c6bc136956667b03ac9fab2f286e02Set Approval For...163258912023-01-03 11:14:4732 days 39 mins agoENS Name jouichirou.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00065916 14.26231491
0xe7c1a6c70001e7427c0cbeff7c8ec6d8b9f5ff31fe3439d80ba6e30e6fec85a8Set Approval For...163194912023-01-02 13:49:2332 days 22 hrs agoENS Name yourconnect.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00067071 14.53875215
0x6a6db9255acbaa938520860070f66527c50d25dcc4d0c98404cdb929f3387ebfSet Approval For...162833442022-12-28 12:47:2337 days 23 hrs agoENS Name *.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00063687 13.80513738
0xb5bf3826715e2b73f2934ba5bea4667b0f8d37434243d843c080a8e5ae0ef897Set Approval For...162591992022-12-25 3:52:4741 days 8 hrs agoENS Name touchmeta.eth IN  0x91eeda83433690056e22fe33f0e2ffc754ba10760 Ether0.00024663 10.14750479
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0xeb372e6e2d93e9ab919118742657232bb04809d4ee0fef2d7fd48d263e47a6b2159913572022-11-17 17:52:4778 days 18 hrs ago 0x99bde8367d7b99d2b1ae6fce12068b49aba47207  Contract Creation0 Ether
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xf49c1ae8d37fb7dc901fd2eda3068a913ca402a4

Contract Name:
StarNFTV4

Compiler Version
v0.7.6+commit.7338295f

Optimization Enabled:
Yes with 200 runs

Other Settings:
istanbul EvmVersion, Apache-2.0 license
File 1 of 11 : StarNFTV4.sol
/*
    Copyright 2022 Project Galaxy.
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
    http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
    SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.7.6;

import "IERC721.sol";
import "IERC721Receiver.sol";
import "IERC721Metadata.sol";
import "Address.sol";
import "Strings.sol";
import "Ownable.sol";
import "ERC165.sol";
import "IStarNFT.sol";

/**
 * @dev Fork https://github.com/generalgalactic/ERC721S and implement IStarNFT interface
 */
contract StarNFTV4 is Ownable, ERC165, IERC721, IERC721Metadata, IStarNFT {
    using Address for address;
    using Strings for uint256;

    /* ============ State Variables ============ */

    struct Star {
        uint160 owner;
        uint96 cid; // Max value is 7.9E28, enough to store campaign id
    }

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Total number of tokens burned
    uint256 private _burnCount;

    // Array of all tokens storing the owner's address and the campaign id
    Star[] private _tokens;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // 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;

    // Mint and burn star.
    mapping(address => bool) private _minters;

    // Default allow transfer
    bool private _transferable = true;

    // Base token URI
    string private _baseURI;

    /* ============ Events ============ */
    // Add new minter
    event EventMinterAdded(address indexed newMinter);

    // Remove old minter
    event EventMinterRemoved(address indexed oldMinter);

    /* ============ Modifiers ============ */

    /**
     * Only minter.
     */
    modifier onlyMinter() {
        require(_minters[msg.sender], "StarNFT: must be minter");
        _;
    }

    /**
     * Only allow transfer.
     */
    modifier onlyTransferable() {
        require(_transferable, "StarNFT: must transferable");
        _;
    }

    /**
     * @dev Initializes the contract
     */
    constructor() {
        // Initialize zero index value
        Star memory _star = Star(0, 0);
        _tokens.push(_star);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
    public
    view
    override(ERC165, IERC165)
    returns (bool)
    {
        return
        interfaceId == type(IERC721).interfaceId ||
        interfaceId == type(IERC721Metadata).interfaceId ||
        interfaceId == type(IStarNFT).interfaceId ||
        super.supportsInterface(interfaceId);
    }

    /**
     * @dev Is this address a minters.
     */
    function minters(address account) public view returns (bool) {
        return _minters[account];
    }

    /**
     * @dev Is this contract allow nft transfer.
     */
    function transferable() public view returns (bool) {
        return _transferable;
    }

    /**
     * @dev Returns the base URI for nft.
     */
    function baseURI() public view returns (string memory) {
        return _baseURI;
    }

    /**
     * @dev Get Star NFT CID.
     */
    function cid(uint256 tokenId) public view returns (uint256) {
        require(_exists(tokenId), "StarNFT: StarNFT does not exist");
        return _tokens[tokenId].cid;
    }

    /**
     * @dev Get Star NFT owner
     */
    function getNumMinted() public view override returns (uint256) {
        return _tokens.length-1;
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view returns (uint256) {
        return getNumMinted() - _burnCount;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     * This is implementation is O(n) and should not be
     * called by other contracts.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index)
    public
    view
    returns (uint256)
    {
        uint256 currentIndex = 0;
        for (uint256 i = 1; i < _tokens.length; i++) {
            if (isOwnerOf(owner, i)) {
                if (currentIndex == index) {
                    return i;
                }
                currentIndex += 1;
            }
        }
        revert("ERC721Enumerable: owner index out of bounds");
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner)
    public
    view
    override
    returns (uint256)
    {
        require(
            owner != address(0),
            "ERC721: balance query for the zero address"
        );
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId)
    public
    view
    override
    returns (address)
    {
        require(
            _exists(tokenId),
            "ERC721: owner query for nonexistent token"
        );
        return address(_tokens[tokenId].owner);
    }

    /**
     * @dev See {IStarNFT-isOwnerOf}.
     */
    function isOwnerOf(address account, uint256 id)
    public
    view
    override
    returns (bool)
    {
        address owner = ownerOf(id);
        return owner == account;
    }

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

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

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId)
    public
    view
    override
    returns (string memory)
    {
        require(
            _exists(tokenId),
            "ERC721Metadata: URI query for nonexistent token"
        );

        return
        bytes(_baseURI).length > 0
        ? string(abi.encodePacked(_baseURI, tokenId.toString(), ".json"))
        : "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId)
    public
    view
    override
    returns (address)
    {
        require(
            _exists(tokenId),
            "ERC721: approved query for nonexistent token"
        );

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved)
    public
    override
    {
        require(operator != _msgSender(), "ERC721: approve to caller");

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

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

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public onlyTransferable override {
        //solhint-disable-next-line max-line-length
        require(
            _isApprovedOrOwner(_msgSender(), tokenId),
            "ERC721: transfer caller is not owner nor approved"
        );

        _transfer(from, to, tokenId);
    }

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

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public onlyTransferable override {
        require(
            _isApprovedOrOwner(_msgSender(), tokenId),
            "ERC721: transfer caller is not owner nor approved"
        );
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @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.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal {
        _transfer(from, to, tokenId);
        require(
            _checkOnERC721Received(from, to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @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`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return tokenId > 0 && tokenId <= getNumMinted() && _tokens[tokenId].owner != 0x0;
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId)
    internal
    view
    returns (bool)
    {
        address owner = ownerOf(tokenId);
        return (spender == owner ||
        getApproved(tokenId) == spender ||
        isApprovedForAll(owner, spender));
    }

    /* ============ External Functions ============ */
    function mint(address account, uint256 cid)
    external
    override
    onlyMinter
    returns (uint256)
    {
        require(account != address(0), "StarNFT: mint to the zero address");

        uint256 tokenId = _tokens.length;
        Star memory star = Star(uint160(account), uint96(cid));

        _balances[account] += 1;
        _tokens.push(star);

        require(
            _checkOnERC721Received(address(0), account, tokenId, ""),
            "StarNFT: transfer to non ERC721Receiver implementer"
        );

        emit Transfer(address(0), account, tokenId);
        return tokenId;
    }

    function mintBatch(
        address account,
        uint256 amount,
        uint256[] calldata cidArr
    ) external override onlyMinter returns (uint256[] memory) {
        require(account != address(0), "StarNFT: mint to the zero address");
        uint256[] memory ids = new uint256[](amount);

        _balances[account] += amount;

        for (uint256 i = 0; i < ids.length; i++) {
            uint256 tokenId = _tokens.length;
            Star memory star = Star(uint160(account), uint96(cidArr[i]));
            ids[i] = tokenId;
            _tokens.push(star);

            require(
                _checkOnERC721Received(address(0), account, tokenId, ""),
                "StarNFT: transfer to non ERC721Receiver implementer"
            );

            emit Transfer(address(0), account, tokenId);
        }

        return ids;
    }

    function burn(address account, uint256 id) external override onlyMinter {
        require(
            _isApprovedOrOwner(_msgSender(), id),
            "StarNFT: caller is not approved or owner"
        );
        require(isOwnerOf(account, id), "StarNFT: not owner");

        // Clear approvals
        _approve(address(0), id);
        _burnCount++;
        _balances[account] -= 1;
        _tokens[id].owner = 0;
        _tokens[id].cid = 0;

        emit Transfer(account, address(0), id);
    }

    function burnBatch(address account, uint256[] calldata ids)
    external
    override
    onlyMinter
    {
        _burnCount += ids.length;
        _balances[account] -= ids.length;
        for (uint256 i = 0; i < ids.length; i++) {
            uint256 tokenId = ids[i];
            require(
                _isApprovedOrOwner(_msgSender(), tokenId),
                "StarNFT: caller is not approved or owner"
            );
            require(isOwnerOf(account, tokenId), "StarNFT: not owner");
            // Clear approvals
            _approve(address(0), tokenId);
            _tokens[tokenId].owner = 0;
            _tokens[tokenId].cid = 0;

            emit Transfer(account, address(0), tokenId);
        }
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * 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
    ) internal virtual {
        require(
            isOwnerOf(from, tokenId),
            "ERC721: transfer of token that is not own"
        );
        require(to != address(0), "ERC721: transfer to the zero address");

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);
        _balances[from] -= 1;
        _balances[to] += 1;
        _tokens[tokenId].owner = uint160(to);

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try
            IERC721Receiver(to).onERC721Received(
                _msgSender(),
                from,
                tokenId,
                _data
            )
            returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert(
                    "ERC721: transfer to non ERC721Receiver implementer"
                    );
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        }
        return true;
    }

    /* ============ Util Functions ============ */
    /**
     * @dev Sets a new baseURI for all token types.
     */
    function setURI(string calldata newURI) external onlyOwner {
        _baseURI = newURI;
    }

    /**
     * @dev Sets a new transferable for all token types.
     */
    function setTransferable(bool transferable) external onlyOwner {
        _transferable = transferable;
    }

    /**
     * @dev Sets a new name for all token types.
     */
    function setName(string calldata newName) external onlyOwner {
        _name = newName;
    }

    /**
     * @dev Sets a new symbol for all token types.
     */
    function setSymbol(string calldata newSymbol) external onlyOwner {
        _symbol = newSymbol;
    }

    /**
     * @dev Add a new minter.
     */
    function addMinter(address minter) external onlyOwner {
        require(minter != address(0), "minter must not be null address");
        require(!_minters[minter], "minter already added");
        _minters[minter] = true;
        emit EventMinterAdded(minter);
    }

    /**
     * @dev Remove a old minter.
     */
    function removeMinter(address minter) external onlyOwner {
        require(_minters[minter], "minter does not exist");
        delete _minters[minter];
        emit EventMinterRemoved(minter);
    }

}

File 2 of 11 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "IERC165.sol";

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

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

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

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

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

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

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

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

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

    /**
     * @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 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);

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

File 3 of 11 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

File 4 of 11 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
     */
    function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}

File 5 of 11 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {

    /**
     * @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);
}

File 6 of 11 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 7 of 11 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    /**
     * @dev Converts a `uint256` to its ASCII `string` representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        uint256 index = digits - 1;
        temp = value;
        while (temp != 0) {
            buffer[index--] = bytes1(uint8(48 + temp % 10));
            temp /= 10;
        }
        return string(buffer);
    }
}

File 8 of 11 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

File 9 of 11 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 10 of 11 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
abstract contract ERC165 is IERC165 {
    /*
     * bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
     */
    bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;

    /**
     * @dev Mapping of interface ids to whether or not it's supported.
     */
    mapping(bytes4 => bool) private _supportedInterfaces;

    constructor () internal {
        // Derived contracts need only register support for their own interfaces,
        // we register support for ERC165 itself here
        _registerInterface(_INTERFACE_ID_ERC165);
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     *
     * Time complexity O(1), guaranteed to always use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return _supportedInterfaces[interfaceId];
    }

    /**
     * @dev Registers the contract as an implementer of the interface defined by
     * `interfaceId`. Support of the actual ERC165 interface is automatic and
     * registering its interface id is not required.
     *
     * See {IERC165-supportsInterface}.
     *
     * Requirements:
     *
     * - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
     */
    function _registerInterface(bytes4 interfaceId) internal virtual {
        require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
        _supportedInterfaces[interfaceId] = true;
    }
}

File 11 of 11 : IStarNFT.sol
/*
    Copyright 2021 Project Galaxy.

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

    SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.7.6;

/**
 * @title IStarNFT
 * @author Galaxy Protocol
 *
 * Interface for operating with StarNFTs.
 */
interface IStarNFT {
    /* ============ Events =============== */

    /* ============ Functions ============ */

    function isOwnerOf(address, uint256) external view returns (bool);
    function getNumMinted() external view returns (uint256);
    // mint
    function mint(address account, uint256 powah) external returns (uint256);
    function mintBatch(address account, uint256 amount, uint256[] calldata powahArr) external returns (uint256[] memory);
    function burn(address account, uint256 id) external;
    function burnBatch(address account, uint256[] calldata ids) external;
}

Settings
{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"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":"newMinter","type":"address"}],"name":"EventMinterAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldMinter","type":"address"}],"name":"EventMinterRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"minter","type":"address"}],"name":"addMinter","outputs":[],"stateMutability":"nonpayable","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":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"burn","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256[]","name":"ids","type":"uint256[]"}],"name":"burnBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"cid","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":"getNumMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"account","type":"address"},{"internalType":"uint256","name":"id","type":"uint256"}],"name":"isOwnerOf","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"cid","type":"uint256"}],"name":"mint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256[]","name":"cidArr","type":"uint256[]"}],"name":"mintBatch","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"minters","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":[{"internalType":"address","name":"minter","type":"address"}],"name":"removeMinter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newName","type":"string"}],"name":"setName","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newSymbol","type":"string"}],"name":"setSymbol","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"transferable","type":"bool"}],"name":"setTransferable","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newURI","type":"string"}],"name":"setURI","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":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"transferable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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Swarm Source

ipfs://e5000363c77d4f39bc54684f60cc2bf853be6c4aaf08492300912dc4294166b9
Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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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.