Contract 0x9fEb90D810865227650be99F32FFd6B748032568 9

 
Txn Hash Method
Block
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0x547b2b2d9952c97709a4a65e98725ae301f26f86d272c60af78d48d7db32a62aSet Approval For...1334011682023-09-22 4:05:251 day 4 hrs ago0x2f26c1d10456b6256460517ae912b5785e395794 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00002530.1
0xaad651547e1f70b9a04997ee616586654c0d5b7ce32918ca40d84cf9570018ffSet Approval For...1316906542023-09-16 17:22:306 days 15 hrs ago0x75daf4752571b819a8fc70f2e06f699b0b63b1b8 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000019850.1
0xc731a9e227a685d4d4a1e4f61bccace0fd7bdb85e6ad5206683d348d60212dabSet Approval For...1215117142023-08-15 4:00:0039 days 4 hrs ago0x3ad488edb7898948a8508eca36a6a8d1c6a40438 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000029420.1
0x35f767acbe384b0e64a98fa42e553a6f3cb662446967ab57e2d10b1d8a9a2d20Set Approval For...1139297142023-07-22 22:11:0262 days 10 hrs ago0x6f8a8912961e52f606b3e16b7a1beef1ee8bb78f IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00003261 0.1
0xa20f856b3d37d28d21d59993f71b61011b6b4a4dec9752db2292a99addfee079Set Approval For...1116005712023-07-15 22:17:5769 days 10 hrs ago0x058624c142eccb31075d6ad4b11ab42f00097bf9 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00003152 0.1
0x9622702a7541d4dce91fa93777df778dd93729dbd342add80148f675a4aa929cSet Approval For...1108542762023-07-13 17:26:2971 days 15 hrs ago0xa91be77843a6eb469f5732d359ea2754a98a8144 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00011295 0.1
0xa3a573d907a8ed5055766538da92d75fd01601d93e44592e395c8ce9fd757c4fSet Approval For...1101355432023-07-11 14:08:5373 days 18 hrs ago0xc77b259dab6132c0f5110d8cebdf7c4f445ee9eb IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000039580.1
0x6746d31d1e8262f82c4c2680f90bd78086e10aa7a2b239b9679464b8d3e06e14Set Approval For...1092924322023-07-09 2:02:5876 days 6 hrs ago0xaad28d1c5a578abdafe51f289602275900f09b2b IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00003194 0.1
0x67e8bda708514812360658996d4c80d61e6dbec9494ef5cb02ce9436fd5186fdSet Approval For...1078418152023-07-04 16:02:3080 days 16 hrs ago0x4909025fce4257f8c1b588e94fc5cad21190ae31 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000043020.1
0xa2ec6a38e0b942bbf0f4fdbf4ab716c3eb218a67142c526c160d54e2f30894f3Set Approval For...1072522762023-07-02 21:59:1582 days 10 hrs ago0x75790a8f906162ea42e646c2731771b6a8cc9cfc IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000028970.1
0x3aa9524c4c4bc6ab4d1ce59232f3cb3b70280c196374a39693ec6b7e6a8407bcSet Approval For...1057642462023-06-28 11:48:5286 days 20 hrs ago0x183713b56501863a23aef7cdbfc14c5da0f451e1 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000034480.1
0xd50ce1339e9a0abb2d44c03b848bf6ad191efc6123c77951927daa18c693e0faSet Approval For...1003476362023-06-12 9:00:50102 days 23 hrs ago0x048ef5dd68c0f15950574cd2e93fe499f43d0822 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00003806 0.1
0x089223feb45d27cd8e68e0db6952f415c2dab2a4e9b074eece6c2c44159a8785Set Approval For...1003414962023-06-12 8:35:20103 days 3 mins ago0x048ef5dd68c0f15950574cd2e93fe499f43d0822 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000033550.1
0x8d0fb6a1771982f03a7eed7629f46aa8bf89a60ba4593a8d140d846f1c8d6eccSet Approval For...969658292023-06-02 8:45:47112 days 23 hrs ago0x3f41a3fd3fc865204b65d73f16ff9e89799d6002 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000053510.1
0x0790ffeb9ac2573fdce51844c7d9c9e42270966d90aa40fb73df024d6f9620a6Set Approval For...964705552023-05-31 21:27:15114 days 11 hrs ago0x8242e4b1b3032d553633ff0b3060ddc08be33307 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00005616 0.1
0xcdd98364c4381b79ac2dc59966b9056089963e9d201f73732ee319c99a7abb80Set Approval For...956861332023-05-29 14:25:12116 days 18 hrs ago0xb142c1698ab29d970a002c379fc1e3653f6b1b5d IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000073790.1
0xf4b7f506cfd8a40e2d8a55353057e536204fbbe5ad5d8018e33dc29956a8f747Set Approval For...946949362023-05-26 16:48:25119 days 15 hrs ago0xc118a0416ed75b5cf2900253d694265d848919d1 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000074610.1
0x25ae95e10be84216bc41f4846f7dd84a5d417ef2e16c43a43f4377844817b4cfSet Approval For...943233482023-05-25 15:02:38120 days 17 hrs ago0xaa6f2603ac7cc63e16fa001f662023716cc1a767 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.0000780.1
0x00ea9447ea65ebddd1e302fa7acb8814c14dae29ce70e69f3762647b03405530Set Approval For...939034082023-05-24 9:47:05121 days 22 hrs ago0x18b4164559c02fe2246718e80765d3bbab1328c3 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00005690.1
0xee20a812aa04a16c1ad0c989c8bbc5a024b86cd491dc2ce6a5b3f595fcf44d7fSet Approval For...928578682023-05-21 7:10:09125 days 1 hr ago0xc2846dbee96a5a79c3ddf1398c6ff7a446821d4c IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00005174 0.1
0x96d352be7947729df8d0c819a86700682722dfce9cbe5063061285839e552602Set Approval For...912554312023-05-16 10:55:49129 days 21 hrs ago0xa91be77843a6eb469f5732d359ea2754a98a8144 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000078240.1
0xf923c88f3bef119878d5819b9fc19a6e77f836fa902493aec6191357e4841e9cSet Approval For...906494322023-05-14 15:23:11131 days 17 hrs ago0x3216ab0b4e3506ad6b901d3c52ca49a1f6da91fa IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000084340.1
0xf4490c9e76416058237f949d46b459c6df3ee1f913537480dc92d0209adf6c7eSet Approval For...901653802023-05-13 4:54:50133 days 3 hrs ago0xd38d9e15da09e364c7ecc10a76733cb6173e4cad IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000064350.1
0x2476b69356e28a3614c992979172e78dc6d5a833abda45e0413796d3112ac3c4Set Approval For...901634882023-05-13 4:46:46133 days 3 hrs ago0x1f886bb69e3ba6160d446577c5271fd57526f599 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.00007012 0.1
0xdf91de0970e21c03536c8ad78f0392c47fa495c1782540623a99726ff7209e5fSet Approval For...891847372023-05-10 7:29:33136 days 1 hr ago0x6a6d9e5a34b65b825aa4093ae0a9647193e8f8f5 IN  0x9feb90d810865227650be99f32ffd6b7480325680 ETH0.000087660.1
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0x8707f92a1f6d436e0e7cb50bbc2192c2f0797567106de98e3fe20681df9f0410720861152023-03-21 10:16:33185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x91b2f8ad6b91ede93a250bc7cc012691920b095db101265507dd048dd8dde32e720859912023-03-21 10:16:01185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x4f9c31aa5f166e7ac25d9886306be79219c2c8d57ad4469113d05b60d85bdd44720857762023-03-21 10:15:07185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0xd597f243f037d91c099017c39125ad7a9f93f69c5d156c4e83d42230d6b246df720855292023-03-21 10:14:05185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x26d4be91a63b75d19c5cf0b2f9c16c926993b1160bd1b7a4c128c325c66690ce720853022023-03-21 10:13:08185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x94ad00bfbed3394817ce988652b7a7d0261931ad0af241df72509feb3c309123720852852023-03-21 10:13:03185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x60e841f7e076781dc962207cd38d6c68043d943c0cba5440450eaab8683da9cc720840702023-03-21 10:08:00185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x2ddd50a06277c58d51ea7fec4fae81c896686dcf348578c46431d20853c05554720829592023-03-21 10:03:28185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x8cea16009fdec64199bc58c0224fc818d0b6157a25142b53db2943f979beaf0d720828612023-03-21 10:03:03185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x5422dfd1069c1582115cc79cee5c84ad4e299ec3254df6b60c46cb95787526b1720822162023-03-21 10:00:21185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x041c53ddb7c93710ec139029e16686ec10b4ed306bc9d28d776c00672454ff63720819492023-03-21 9:59:13185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x9921c36f8a75630de988d5da41c8c482d773edbb37c2b1d73351bd5aa781c3fa720815232023-03-21 9:57:32185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0xf065cf63ad8a1864c3eaedebd11252e2efceaf1990001ac708f87fad2ff0cbeb720812842023-03-21 9:56:32185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x0ebc17bbea2d4ecea503ef94e7fa1e78a21cb8594e0b7a78af7b357550877fc1720811342023-03-21 9:55:54185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x14a08c2743d264ad985e985be850bc862a0461b6ee8cae39b3b5ceb3338ddee9720808512023-03-21 9:54:43185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x79c022c172c26d80d444a12f3144867e8e34ae613a6cfb8e9512012c6a852330720798692023-03-21 9:50:45185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x7309d79f0abfedb708de103de8e7ee5d0763630c3a0b5eab81e4d75d2b6bbf95720793792023-03-21 9:48:42185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x68151395c2154bcd12696321424527ed1aba8d8a71ac4e1f3fb213ddeac56bec720788882023-03-21 9:46:38185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0xf79e5c182ffb7d88a87baa10b58e8ffdc7447d9c738c626763cce2cd530eff33720783522023-03-21 9:44:30185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x45f85b2178cd3f45c676367261d9b99ba412ebdfbbe017febbf569d616d46b6c720783392023-03-21 9:44:27185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x10ba319c5e467865463c63a02d73a6498b30c66fef23e4bc6e1f7ea2ad737481720780392023-03-21 9:43:12185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x4da180f45a05e17da078a52b98340011014cf3d03ff2c7df42956032b9c52239720779282023-03-21 9:42:44185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0xd765a2f3148c294db6369b2bb533dc060635071657c0bd799901322114b70882720777662023-03-21 9:42:03185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x24f035e3ccf76f911ad4f393d4da8dfc523ebb9680a96aadb954e2e5b973e1ee720776032023-03-21 9:41:22185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
0x4d5e5de7d733f3c6877e7bf3d01f3b322a4444b254a1913f1bb6002976078c2d720775422023-03-21 9:41:07185 days 22 hrs ago Galxe: NFT Space Station 0x9feb90d810865227650be99f32ffd6b7480325680 ETH
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Similar Match Source Code
This contract matches the deployed ByteCode of the Source Code for Contract 0x08804c13d21da41d2f1d6334b80f3241ca72d2b7
The constructor portion of the code might be different and could alter the actual behaviour of the contract

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 ABI

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moveMinter","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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Metadata Hash

e5000363c77d4f39bc54684f60cc2bf853be6c4aaf08492300912dc4294166b9
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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