Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

import "./NFTBase.sol";
import "./ChainLinkRandom.sol";
import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";

contract NFTContract is NFTBase, ChainLinkRandom, ReentrancyGuard {
    bool internal revealed;

    constructor(
        address _VRFCoordinator,
        address _LINKToken,
        bytes32 _keyHash,
        string memory _blankURI,
        uint256 _supply,
        address _developer
    )
        public
        NFTBase(_blankURI, _supply, _developer)
        ChainLinkRandom(_VRFCoordinator, _LINKToken, _keyHash)
    {}

    /**
     * @dev reveal metadata of tokens.
     * @dev only can call one time, and only owner can call it.
     * @dev function will request to chainlink oracle and receive random number.
     * @dev contract will get this number by fulfillRandomness function.
     * @dev You should transfer 2 LINK token to contract, before call this function
     */
    function reveal() public onlyOwner {
        require(!revealed, "You have already generated a random seed");
        require(bytes(baseURI()).length > 0, "You should set baseURI first");
        revealed = true;
        _generateRandomSeed();
    }

    /**
     * @dev query metadata id of token
     * @notice only know after owner owner create `seed`
     * @param tokenId The id of token you want to query
     */
    function metadataOf(uint256 tokenId) internal view returns (string memory) {
        if (seed == 0) return "";

        uint256[] memory metaIds = new uint256[](DSA_SUPPLY);

        for (uint256 i = 0; i < DSA_SUPPLY; i++) {
            metaIds[i] = i;
        }

        // shuffle meta id
        for (uint256 i = beginRandomIndex; i < DSA_SUPPLY; i++) {
            uint256 j = shuffleId(DSA_SUPPLY, i, beginRandomIndex);
            (metaIds[i], metaIds[j]) = (metaIds[j], metaIds[i]);
        }

        return metaIds[tokenId].toString();
    }

    /**
     * @dev query tokenURI of token Id
     * @dev before reveal will return default URI
     * @dev after reveal return token URI of this token on IPFS
     * @param tokenId The id of token you want to query
     */
    function tokenURI(uint256 tokenId)
        public
        view
        override
        returns (string memory)
    {
        require(
            _exists(tokenId),
            "ERC721Metadata: URI query for nonexistant token"
        );

        if (tokenId < beginRandomIndex)
            return
                string(abi.encodePacked(celebTokenBaseURI, tokenId.toString()));

        // before reveal, nobody know what happened. Return _blankURI
        if (seed == 0) {
            return blankURI;
        }

        // after reveal, you can know your know.
        return string(abi.encodePacked(baseURI(), metadataOf(tokenId)));
    }

    /**
     * @dev mint token in sale period
     */
    function mintTokenOnSale(uint256 numberToken)
        external
        payable
        nonReentrant
        canMintOnSale(numberToken)
        mintable(numberToken)
    {
        _mintToken(_msgSender(), numberToken);
    }

    /**
     * @dev mint token in pre sale period
     */
    function mintTokenOnPreSale(uint256 numberToken)
        external
        payable
        nonReentrant
        mintable(numberToken)
    {
        _mintPreSale(_msgSender(), numberToken);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";

/**
 * @dev NFTBase contract.
 * @notice Setup admin control functional, include price,
 */
contract NFTBase is Ownable, ERC721 {
    // status of contract
    enum STATUS {
        OFF_SALE,
        PRE_SALE,
        ON_SALE
    }

    uint256 public DSA_SUPPLY;

    uint256 public maxMint;
    uint256 public preSaleMaxMint;
    uint256 public price;

    string internal blankURI;

    uint256 public beginRandomIndex;
    string internal celebTokenBaseURI;

    bool internal creatorMinted;
    uint256 internal numberDev;
    address internal developer;


    STATUS public status;
    mapping(address => bool) public whitelist;
    mapping(address => uint256) public giveAways;
    mapping(address => uint256) public whitelistCounts;

    constructor(string memory _blankURI, uint256 _supply, address _developer)
        public
        ERC721("Doomed Souls Army", "DSA")
    {
        DSA_SUPPLY = _supply;
        price = 0.05 ether;
        maxMint = 5;
        preSaleMaxMint = 5;
        blankURI = _blankURI;
        numberDev = 100;
        developer = _developer;
    }

    modifier canMintOnSale(uint256 _number) {
        require(status == STATUS.ON_SALE, "Status is not on sale");

        require(
            _number <= maxMint,
            "Over max token can mint per one transaction"
        );
        require(msg.value >= _number.mul(price), "Payment error");
        _;
    }

    /**
     * @dev ensure collector pays for mint token
     */
    modifier mintable(uint256 _number) {
        require(
            _number.add(totalSupply()) < DSA_SUPPLY,
            "Bound limit of maxinum supply limit"
        );
        _;
    }

    /**
     * @dev change status from online to offline and vice versa
     */
    function setStatus(STATUS _status) public onlyOwner returns (bool) {
        status = _status;
        return true;
    }

    function setPrice(uint256 _price) public onlyOwner {
        require(status == STATUS.OFF_SALE, "Current status is not off sale");
        price = _price;
    }

    function setMaxMint(uint256 _maxMint) external onlyOwner {
        maxMint = _maxMint;
    }

    function setBaseURI(string memory _baseURI) public onlyOwner {
        _setBaseURI(_baseURI);
    }

    function setBlankURI(string memory _blankURI) public onlyOwner {
        blankURI = _blankURI;
    }

    function setCelebDSABaseURI(string memory _celebTokenBaseURI)
        public
        onlyOwner
    {
        celebTokenBaseURI = _celebTokenBaseURI;
    }

    function addToWhitelist(address[] memory _wallets) public onlyOwner {
        for (uint256 i = 0; i < _wallets.length; ++i) {
            whitelist[_wallets[i]] = true;
        }
    }

    function removeFromWhitelist(address[] memory _wallets) public onlyOwner {
        for (uint256 i = 0; i < _wallets.length; ++i) {
            whitelist[_wallets[i]] = false;
        }
    }

    function setGiveAways(address[] memory _wallets, uint256[] memory _giveAways)
        public
        onlyOwner
    {
        for (uint256 i = 0; i < _wallets.length; ++i) {
            whitelist[_wallets[i]] = true;
            giveAways[_wallets[i]] = _giveAways[i];
        }
    }

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

    function _mintToken(address _receiver, uint256 _number) internal {
        for (uint256 i = 0; i < _number; i++) {
            uint256 tokenIndex = totalSupply();
            if (tokenIndex < DSA_SUPPLY) _safeMint(_receiver, tokenIndex);
        }
    }

    function _mintPreSale(address _receiver, uint256 _number) internal {
        require(status == STATUS.PRE_SALE, "Current status is not pre sale");
        require(whitelist[_receiver], "You not in whitelist");

        if (giveAways[_receiver] >= _number) {
            giveAways[_receiver] = giveAways[_receiver].sub(_number);
        } else {
            require(
                whitelistCounts[_receiver].add(_number).sub(
                    giveAways[_receiver]
                ) <= preSaleMaxMint,
                "Over whitelist max mint"
            );

            require(
                msg.value >= _number.sub(giveAways[_receiver]).mul(price),
                "Payment error"
            );

            whitelistCounts[_receiver] = whitelistCounts[_receiver].add(
                _number.sub(giveAways[_receiver])
            );

            giveAways[_receiver] = 0;
        }

        _mintToken(_receiver, _number);
    }

    function reserveByDeveloper(uint256 _number) external {
        require(_msgSender() == developer, "You don't have permission!!!");
        require(numberDev >= _number, "You can't mint more");
        numberDev = numberDev.sub(_number);
        _mintToken(developer, _number);
    }

    function reserveByCreator(
        uint256 _numberCreator,
        uint256 _numberCreatorCeleb,
        uint256 _numberDevCeleb,
        string memory _celebTokenBaseURI
    ) external onlyOwner {
        require(!creatorMinted, "You minted token for creator");
        creatorMinted = true;
        // celeb token URI
        setCelebDSABaseURI(_celebTokenBaseURI);

        beginRandomIndex = _numberCreatorCeleb.add(_numberDevCeleb);

        numberDev = numberDev.sub(_numberDevCeleb);

        _mintToken(owner(), _numberCreatorCeleb);
        _mintToken(developer, _numberDevCeleb);
        _mintToken(owner(), _numberCreator);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;

import "@chainlink/contracts/src/v0.6/VRFConsumerBase.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract ChainLinkRandom is Ownable, VRFConsumerBase {
    event TokenSeed(uint256 seed);

    uint256 public seed;

    uint256 internal fee;
    bytes32 internal keyHash;


    constructor(
        address _VRFCoordinator,
        address _LINKToken,
        bytes32 _keyHash
    ) public VRFConsumerBase(_VRFCoordinator, _LINKToken) {
        keyHash = _keyHash;
        fee = 2 * 10**18; // 2 LINK token
    }

    /**
     * @dev receive random number from chainlink
     * @notice random number will greater than zero
     */
    function fulfillRandomness(bytes32 requestId, uint256 randomNumber)
        internal
        override
    {
        if (randomNumber > 0) seed = randomNumber;
        else seed = 1;
        emit TokenSeed(seed);
    }

    function _generateRandomSeed() internal {
        require(LINK.balanceOf(address(this)) >= fee);
        requestRandomness(keyHash, fee);
    }

    /**
     * @dev compute element with shuffle with id
     */
    function shuffleId(
        uint256 _DSA_SUPPLY,
        uint256 _id,
        uint256 _start
    ) internal view returns (uint256) {
        uint256 random = uint256(keccak256(abi.encode(seed, _id)));
        return
            random.mod(_DSA_SUPPLY.sub(_start)).add(_start);
    }

    function withdrawLink() external onlyOwner {
        LINK.transfer(owner(), LINK.balanceOf(address(this)));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

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

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./IERC721.sol";
import "./IERC721Metadata.sol";
import "./IERC721Enumerable.sol";
import "./IERC721Receiver.sol";
import "../../introspection/ERC165.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
import "../../utils/EnumerableSet.sol";
import "../../utils/EnumerableMap.sol";
import "../../utils/Strings.sol";

/**
 * @title ERC721 Non-Fungible Token Standard basic implementation
 * @dev see https://eips.ethereum.org/EIPS/eip-721
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
    using SafeMath for uint256;
    using Address for address;
    using EnumerableSet for EnumerableSet.UintSet;
    using EnumerableMap for EnumerableMap.UintToAddressMap;
    using Strings for uint256;

    // Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
    // which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
    bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;

    // Mapping from holder address to their (enumerable) set of owned tokens
    mapping (address => EnumerableSet.UintSet) private _holderTokens;

    // Enumerable mapping from token ids to their owners
    EnumerableMap.UintToAddressMap private _tokenOwners;

    // 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;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Optional mapping for token URIs
    mapping (uint256 => string) private _tokenURIs;

    // Base URI
    string private _baseURI;

    /*
     *     bytes4(keccak256('balanceOf(address)')) == 0x70a08231
     *     bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
     *     bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
     *     bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
     *     bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
     *     bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
     *     bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
     *     bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
     *     bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
     *
     *     => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
     *        0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
     */
    bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;

    /*
     *     bytes4(keccak256('name()')) == 0x06fdde03
     *     bytes4(keccak256('symbol()')) == 0x95d89b41
     *     bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
     *
     *     => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
     */
    bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;

    /*
     *     bytes4(keccak256('totalSupply()')) == 0x18160ddd
     *     bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
     *     bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
     *
     *     => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
     */
    bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;

        // register the supported interfaces to conform to ERC721 via ERC165
        _registerInterface(_INTERFACE_ID_ERC721);
        _registerInterface(_INTERFACE_ID_ERC721_METADATA);
        _registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
    }

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

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

    /**
     * @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 virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory _tokenURI = _tokenURIs[tokenId];
        string memory base = baseURI();

        // If there is no base URI, return the token URI.
        if (bytes(base).length == 0) {
            return _tokenURI;
        }
        // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
        if (bytes(_tokenURI).length > 0) {
            return string(abi.encodePacked(base, _tokenURI));
        }
        // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
        return string(abi.encodePacked(base, tokenId.toString()));
    }

    /**
    * @dev Returns the base URI set via {_setBaseURI}. This will be
    * automatically added as a prefix in {tokenURI} to each token's URI, or
    * to the token ID if no specific URI is set for that token ID.
    */
    function baseURI() public view virtual returns (string memory) {
        return _baseURI;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        return _holderTokens[owner].at(index);
    }

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        // _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
        return _tokenOwners.length();
    }

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        (uint256 tokenId, ) = _tokenOwners.at(index);
        return tokenId;
    }

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

        require(_msgSender() == owner || ERC721.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 virtual 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 virtual 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 virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

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

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual 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 virtual {
        _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 virtual returns (bool) {
        return _tokenOwners.contains(tokenId);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     d*
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
        _mint(to, tokenId);
        require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

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

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId); // internal owner

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        // Clear metadata (if any)
        if (bytes(_tokenURIs[tokenId]).length != 0) {
            delete _tokenURIs[tokenId];
        }

        _holderTokens[owner].remove(tokenId);

        _tokenOwners.remove(tokenId);

        emit Transfer(owner, 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(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _holderTokens[from].remove(tokenId);
        _holderTokens[to].add(tokenId);

        _tokenOwners.set(tokenId, to);

        emit Transfer(from, to, tokenId);
    }

    /**
     * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
        _tokenURIs[tokenId] = _tokenURI;
    }

    /**
     * @dev Internal function to set the base URI for all token IDs. It is
     * automatically added as a prefix to the value returned in {tokenURI},
     * or to the token ID if {tokenURI} is empty.
     */
    function _setBaseURI(string memory baseURI_) internal virtual {
        _baseURI = baseURI_;
    }

    /**
     * @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()) {
            return true;
        }
        bytes memory returndata = to.functionCall(abi.encodeWithSelector(
            IERC721Receiver(to).onERC721Received.selector,
            _msgSender(),
            from,
            tokenId,
            _data
        ), "ERC721: transfer to non ERC721Receiver implementer");
        bytes4 retval = abi.decode(returndata, (bytes4));
        return (retval == _ERC721_RECEIVED);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits an {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}

// 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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "../../introspection/IERC165.sol";

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

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

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

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

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

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, 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;
}

// 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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "./IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Enumerable is IERC721 {

    /**
     * @dev Returns the total amount of tokens stored by the contract.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns a token ID owned by `owner` at a given `index` of its token list.
     * Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);

    /**
     * @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
     * Use along with {totalSupply} to enumerate all tokens.
     */
    function tokenByIndex(uint256 index) external view returns (uint256);
}

// 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);
}

// 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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// 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);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;

        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) { // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            // When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            bytes32 lastvalue = set._values[lastIndex];

            // Move the last value to the index where the value to delete is
            set._values[toDeleteIndex] = lastvalue;
            // Update the index for the moved value
            set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        require(set._values.length > index, "EnumerableSet: index out of bounds");
        return set._values[index];
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }


    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

   /**
    * @dev Returns the value stored at position `index` in the set. O(1).
    *
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Library for managing an enumerable variant of Solidity's
 * https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
 * type.
 *
 * Maps have the following properties:
 *
 * - Entries are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Entries are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableMap for EnumerableMap.UintToAddressMap;
 *
 *     // Declare a set state variable
 *     EnumerableMap.UintToAddressMap private myMap;
 * }
 * ```
 *
 * As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
 * supported.
 */
library EnumerableMap {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Map type with
    // bytes32 keys and values.
    // The Map implementation uses private functions, and user-facing
    // implementations (such as Uint256ToAddressMap) are just wrappers around
    // the underlying Map.
    // This means that we can only create new EnumerableMaps for types that fit
    // in bytes32.

    struct MapEntry {
        bytes32 _key;
        bytes32 _value;
    }

    struct Map {
        // Storage of map keys and values
        MapEntry[] _entries;

        // Position of the entry defined by a key in the `entries` array, plus 1
        // because index 0 means a key is not in the map.
        mapping (bytes32 => uint256) _indexes;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex == 0) { // Equivalent to !contains(map, key)
            map._entries.push(MapEntry({ _key: key, _value: value }));
            // The entry is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            map._indexes[key] = map._entries.length;
            return true;
        } else {
            map._entries[keyIndex - 1]._value = value;
            return false;
        }
    }

    /**
     * @dev Removes a key-value pair from a map. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function _remove(Map storage map, bytes32 key) private returns (bool) {
        // We read and store the key's index to prevent multiple reads from the same storage slot
        uint256 keyIndex = map._indexes[key];

        if (keyIndex != 0) { // Equivalent to contains(map, key)
            // To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
            // in the array, and then remove the last entry (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = keyIndex - 1;
            uint256 lastIndex = map._entries.length - 1;

            // When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
            // so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.

            MapEntry storage lastEntry = map._entries[lastIndex];

            // Move the last entry to the index where the entry to delete is
            map._entries[toDeleteIndex] = lastEntry;
            // Update the index for the moved entry
            map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based

            // Delete the slot where the moved entry was stored
            map._entries.pop();

            // Delete the index for the deleted slot
            delete map._indexes[key];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function _contains(Map storage map, bytes32 key) private view returns (bool) {
        return map._indexes[key] != 0;
    }

    /**
     * @dev Returns the number of key-value pairs in the map. O(1).
     */
    function _length(Map storage map) private view returns (uint256) {
        return map._entries.length;
    }

   /**
    * @dev Returns the key-value pair stored at position `index` in the map. O(1).
    *
    * Note that there are no guarantees on the ordering of entries inside the
    * array, and it may change when more entries are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
        require(map._entries.length > index, "EnumerableMap: index out of bounds");

        MapEntry storage entry = map._entries[index];
        return (entry._key, entry._value);
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     */
    function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
        uint256 keyIndex = map._indexes[key];
        if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
        return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function _get(Map storage map, bytes32 key) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {_tryGet}.
     */
    function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
        uint256 keyIndex = map._indexes[key];
        require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
        return map._entries[keyIndex - 1]._value; // All indexes are 1-based
    }

    // UintToAddressMap

    struct UintToAddressMap {
        Map _inner;
    }

    /**
     * @dev Adds a key-value pair to a map, or updates the value for an existing
     * key. O(1).
     *
     * Returns true if the key was added to the map, that is if it was not
     * already present.
     */
    function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
        return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the key was removed from the map, that is if it was present.
     */
    function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
        return _remove(map._inner, bytes32(key));
    }

    /**
     * @dev Returns true if the key is in the map. O(1).
     */
    function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
        return _contains(map._inner, bytes32(key));
    }

    /**
     * @dev Returns the number of elements in the map. O(1).
     */
    function length(UintToAddressMap storage map) internal view returns (uint256) {
        return _length(map._inner);
    }

   /**
    * @dev Returns the element stored at position `index` in the set. O(1).
    * Note that there are no guarantees on the ordering of values inside the
    * array, and it may change when more values are added or removed.
    *
    * Requirements:
    *
    * - `index` must be strictly less than {length}.
    */
    function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
        (bytes32 key, bytes32 value) = _at(map._inner, index);
        return (uint256(key), address(uint160(uint256(value))));
    }

    /**
     * @dev Tries to returns the value associated with `key`.  O(1).
     * Does not revert if `key` is not in the map.
     *
     * _Available since v3.4._
     */
    function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
        (bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
        return (success, address(uint160(uint256(value))));
    }

    /**
     * @dev Returns the value associated with `key`.  O(1).
     *
     * Requirements:
     *
     * - `key` must be in the map.
     */
    function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key)))));
    }

    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryGet}.
     */
    function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
        return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
    }
}

// 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);
    }
}

// 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);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "./vendor/SafeMathChainlink.sol";

import "./interfaces/LinkTokenInterface.sol";

import "./VRFRequestIDBase.sol";

/** ****************************************************************************
 * @notice Interface for contracts using VRF randomness
 * *****************************************************************************
 * @dev PURPOSE
 *
 * @dev Reggie the Random Oracle (not his real job) wants to provide randomness
 * @dev to Vera the verifier in such a way that Vera can be sure he's not
 * @dev making his output up to suit himself. Reggie provides Vera a public key
 * @dev to which he knows the secret key. Each time Vera provides a seed to
 * @dev Reggie, he gives back a value which is computed completely
 * @dev deterministically from the seed and the secret key.
 *
 * @dev Reggie provides a proof by which Vera can verify that the output was
 * @dev correctly computed once Reggie tells it to her, but without that proof,
 * @dev the output is indistinguishable to her from a uniform random sample
 * @dev from the output space.
 *
 * @dev The purpose of this contract is to make it easy for unrelated contracts
 * @dev to talk to Vera the verifier about the work Reggie is doing, to provide
 * @dev simple access to a verifiable source of randomness.
 * *****************************************************************************
 * @dev USAGE
 *
 * @dev Calling contracts must inherit from VRFConsumerBase, and can
 * @dev initialize VRFConsumerBase's attributes in their constructor as
 * @dev shown:
 *
 * @dev   contract VRFConsumer {
 * @dev     constuctor(<other arguments>, address _vrfCoordinator, address _link)
 * @dev       VRFConsumerBase(_vrfCoordinator, _link) public {
 * @dev         <initialization with other arguments goes here>
 * @dev       }
 * @dev   }
 *
 * @dev The oracle will have given you an ID for the VRF keypair they have
 * @dev committed to (let's call it keyHash), and have told you the minimum LINK
 * @dev price for VRF service. Make sure your contract has sufficient LINK, and
 * @dev call requestRandomness(keyHash, fee, seed), where seed is the input you
 * @dev want to generate randomness from.
 *
 * @dev Once the VRFCoordinator has received and validated the oracle's response
 * @dev to your request, it will call your contract's fulfillRandomness method.
 *
 * @dev The randomness argument to fulfillRandomness is the actual random value
 * @dev generated from your seed.
 *
 * @dev The requestId argument is generated from the keyHash and the seed by
 * @dev makeRequestId(keyHash, seed). If your contract could have concurrent
 * @dev requests open, you can use the requestId to track which seed is
 * @dev associated with which randomness. See VRFRequestIDBase.sol for more
 * @dev details. (See "SECURITY CONSIDERATIONS" for principles to keep in mind,
 * @dev if your contract could have multiple requests in flight simultaneously.)
 *
 * @dev Colliding `requestId`s are cryptographically impossible as long as seeds
 * @dev differ. (Which is critical to making unpredictable randomness! See the
 * @dev next section.)
 *
 * *****************************************************************************
 * @dev SECURITY CONSIDERATIONS
 *
 * @dev A method with the ability to call your fulfillRandomness method directly
 * @dev could spoof a VRF response with any random value, so it's critical that
 * @dev it cannot be directly called by anything other than this base contract
 * @dev (specifically, by the VRFConsumerBase.rawFulfillRandomness method).
 *
 * @dev For your users to trust that your contract's random behavior is free
 * @dev from malicious interference, it's best if you can write it so that all
 * @dev behaviors implied by a VRF response are executed *during* your
 * @dev fulfillRandomness method. If your contract must store the response (or
 * @dev anything derived from it) and use it later, you must ensure that any
 * @dev user-significant behavior which depends on that stored value cannot be
 * @dev manipulated by a subsequent VRF request.
 *
 * @dev Similarly, both miners and the VRF oracle itself have some influence
 * @dev over the order in which VRF responses appear on the blockchain, so if
 * @dev your contract could have multiple VRF requests in flight simultaneously,
 * @dev you must ensure that the order in which the VRF responses arrive cannot
 * @dev be used to manipulate your contract's user-significant behavior.
 *
 * @dev Since the ultimate input to the VRF is mixed with the block hash of the
 * @dev block in which the request is made, user-provided seeds have no impact
 * @dev on its economic security properties. They are only included for API
 * @dev compatability with previous versions of this contract.
 *
 * @dev Since the block hash of the block which contains the requestRandomness
 * @dev call is mixed into the input to the VRF *last*, a sufficiently powerful
 * @dev miner could, in principle, fork the blockchain to evict the block
 * @dev containing the request, forcing the request to be included in a
 * @dev different block with a different hash, and therefore a different input
 * @dev to the VRF. However, such an attack would incur a substantial economic
 * @dev cost. This cost scales with the number of blocks the VRF oracle waits
 * @dev until it calls responds to a request.
 */
abstract contract VRFConsumerBase is VRFRequestIDBase {

  using SafeMathChainlink for uint256;

  /**
   * @notice fulfillRandomness handles the VRF response. Your contract must
   * @notice implement it. See "SECURITY CONSIDERATIONS" above for important
   * @notice principles to keep in mind when implementing your fulfillRandomness
   * @notice method.
   *
   * @dev VRFConsumerBase expects its subcontracts to have a method with this
   * @dev signature, and will call it once it has verified the proof
   * @dev associated with the randomness. (It is triggered via a call to
   * @dev rawFulfillRandomness, below.)
   *
   * @param requestId The Id initially returned by requestRandomness
   * @param randomness the VRF output
   */
  function fulfillRandomness(bytes32 requestId, uint256 randomness)
    internal virtual;

  /**
   * @dev In order to keep backwards compatibility we have kept the user
   * seed field around. We remove the use of it because given that the blockhash
   * enters later, it overrides whatever randomness the used seed provides.
   * Given that it adds no security, and can easily lead to misunderstandings,
   * we have removed it from usage and can now provide a simpler API.
   */
  uint256 constant private USER_SEED_PLACEHOLDER = 0;

  /**
   * @notice requestRandomness initiates a request for VRF output given _seed
   *
   * @dev The fulfillRandomness method receives the output, once it's provided
   * @dev by the Oracle, and verified by the vrfCoordinator.
   *
   * @dev The _keyHash must already be registered with the VRFCoordinator, and
   * @dev the _fee must exceed the fee specified during registration of the
   * @dev _keyHash.
   *
   * @dev The _seed parameter is vestigial, and is kept only for API
   * @dev compatibility with older versions. It can't *hurt* to mix in some of
   * @dev your own randomness, here, but it's not necessary because the VRF
   * @dev oracle will mix the hash of the block containing your request into the
   * @dev VRF seed it ultimately uses.
   *
   * @param _keyHash ID of public key against which randomness is generated
   * @param _fee The amount of LINK to send with the request
   *
   * @return requestId unique ID for this request
   *
   * @dev The returned requestId can be used to distinguish responses to
   * @dev concurrent requests. It is passed as the first argument to
   * @dev fulfillRandomness.
   */
  function requestRandomness(bytes32 _keyHash, uint256 _fee)
    internal returns (bytes32 requestId)
  {
    LINK.transferAndCall(vrfCoordinator, _fee, abi.encode(_keyHash, USER_SEED_PLACEHOLDER));
    // This is the seed passed to VRFCoordinator. The oracle will mix this with
    // the hash of the block containing this request to obtain the seed/input
    // which is finally passed to the VRF cryptographic machinery.
    uint256 vRFSeed  = makeVRFInputSeed(_keyHash, USER_SEED_PLACEHOLDER, address(this), nonces[_keyHash]);
    // nonces[_keyHash] must stay in sync with
    // VRFCoordinator.nonces[_keyHash][this], which was incremented by the above
    // successful LINK.transferAndCall (in VRFCoordinator.randomnessRequest).
    // This provides protection against the user repeating their input seed,
    // which would result in a predictable/duplicate output, if multiple such
    // requests appeared in the same block.
    nonces[_keyHash] = nonces[_keyHash].add(1);
    return makeRequestId(_keyHash, vRFSeed);
  }

  LinkTokenInterface immutable internal LINK;
  address immutable private vrfCoordinator;

  // Nonces for each VRF key from which randomness has been requested.
  //
  // Must stay in sync with VRFCoordinator[_keyHash][this]
  mapping(bytes32 /* keyHash */ => uint256 /* nonce */) private nonces;

  /**
   * @param _vrfCoordinator address of VRFCoordinator contract
   * @param _link address of LINK token contract
   *
   * @dev https://docs.chain.link/docs/link-token-contracts
   */
  constructor(address _vrfCoordinator, address _link) public {
    vrfCoordinator = _vrfCoordinator;
    LINK = LinkTokenInterface(_link);
  }

  // rawFulfillRandomness is called by VRFCoordinator when it receives a valid VRF
  // proof. rawFulfillRandomness then calls fulfillRandomness, after validating
  // the origin of the call
  function rawFulfillRandomness(bytes32 requestId, uint256 randomness) external {
    require(msg.sender == vrfCoordinator, "Only VRFCoordinator can fulfill");
    fulfillRandomness(requestId, randomness);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMathChainlink {
  /**
    * @dev Returns the addition of two unsigned integers, reverting on
    * overflow.
    *
    * Counterpart to Solidity's `+` operator.
    *
    * Requirements:
    * - Addition cannot overflow.
    */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, "SafeMath: addition overflow");

    return c;
  }

  /**
    * @dev Returns the subtraction of two unsigned integers, reverting on
    * overflow (when the result is negative).
    *
    * Counterpart to Solidity's `-` operator.
    *
    * Requirements:
    * - Subtraction cannot overflow.
    */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b <= a, "SafeMath: subtraction overflow");
    uint256 c = a - b;

    return c;
  }

  /**
    * @dev Returns the multiplication of two unsigned integers, reverting on
    * overflow.
    *
    * Counterpart to Solidity's `*` operator.
    *
    * Requirements:
    * - Multiplication cannot overflow.
    */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
    if (a == 0) {
      return 0;
    }

    uint256 c = a * b;
    require(c / a == b, "SafeMath: multiplication overflow");

    return c;
  }

  /**
    * @dev Returns the integer division of two unsigned integers. Reverts on
    * division by zero. The result is rounded towards zero.
    *
    * Counterpart to Solidity's `/` operator. Note: this function uses a
    * `revert` opcode (which leaves remaining gas untouched) while Solidity
    * uses an invalid opcode to revert (consuming all remaining gas).
    *
    * Requirements:
    * - The divisor cannot be zero.
    */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // Solidity only automatically asserts when dividing by 0
    require(b > 0, "SafeMath: division by zero");
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold

    return c;
  }

  /**
    * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
    * Reverts when dividing by zero.
    *
    * Counterpart to Solidity's `%` operator. This function uses a `revert`
    * opcode (which leaves remaining gas untouched) while Solidity uses an
    * invalid opcode to revert (consuming all remaining gas).
    *
    * Requirements:
    * - The divisor cannot be zero.
    */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    require(b != 0, "SafeMath: modulo by zero");
    return a % b;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

interface LinkTokenInterface {
  function allowance(address owner, address spender) external view returns (uint256 remaining);
  function approve(address spender, uint256 value) external returns (bool success);
  function balanceOf(address owner) external view returns (uint256 balance);
  function decimals() external view returns (uint8 decimalPlaces);
  function decreaseApproval(address spender, uint256 addedValue) external returns (bool success);
  function increaseApproval(address spender, uint256 subtractedValue) external;
  function name() external view returns (string memory tokenName);
  function symbol() external view returns (string memory tokenSymbol);
  function totalSupply() external view returns (uint256 totalTokensIssued);
  function transfer(address to, uint256 value) external returns (bool success);
  function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool success);
  function transferFrom(address from, address to, uint256 value) external returns (bool success);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

contract VRFRequestIDBase {

  /**
   * @notice returns the seed which is actually input to the VRF coordinator
   *
   * @dev To prevent repetition of VRF output due to repetition of the
   * @dev user-supplied seed, that seed is combined in a hash with the
   * @dev user-specific nonce, and the address of the consuming contract. The
   * @dev risk of repetition is mostly mitigated by inclusion of a blockhash in
   * @dev the final seed, but the nonce does protect against repetition in
   * @dev requests which are included in a single block.
   *
   * @param _userSeed VRF seed input provided by user
   * @param _requester Address of the requesting contract
   * @param _nonce User-specific nonce at the time of the request
   */
  function makeVRFInputSeed(bytes32 _keyHash, uint256 _userSeed,
    address _requester, uint256 _nonce)
    internal pure returns (uint256)
  {
    return  uint256(keccak256(abi.encode(_keyHash, _userSeed, _requester, _nonce)));
  }

  /**
   * @notice Returns the id for this request
   * @param _keyHash The serviceAgreement ID to be used for this request
   * @param _vRFInputSeed The seed to be passed directly to the VRF
   * @return The id for this request
   *
   * @dev Note that _vRFInputSeed is not the seed passed by the consuming
   * @dev contract, but the one generated by makeVRFInputSeed
   */
  function makeRequestId(
    bytes32 _keyHash, uint256 _vRFInputSeed) internal pure returns (bytes32) {
    return keccak256(abi.encodePacked(_keyHash, _vRFInputSeed));
  }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_VRFCoordinator","type":"address"},{"internalType":"address","name":"_LINKToken","type":"address"},{"internalType":"bytes32","name":"_keyHash","type":"bytes32"},{"internalType":"string","name":"_blankURI","type":"string"},{"internalType":"uint256","name":"_supply","type":"uint256"},{"internalType":"address","name":"_developer","type":"address"}],"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":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"seed","type":"uint256"}],"name":"TokenSeed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DSA_SUPPLY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"_wallets","type":"address[]"}],"name":"addToWhitelist","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":[],"name":"beginRandomIndex","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":[{"internalType":"address","name":"","type":"address"}],"name":"giveAways","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":[],"name":"maxMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberToken","type":"uint256"}],"name":"mintTokenOnPreSale","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"numberToken","type":"uint256"}],"name":"mintTokenOnSale","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"preSaleMaxMint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"requestId","type":"bytes32"},{"internalType":"uint256","name":"randomness","type":"uint256"}],"name":"rawFulfillRandomness","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_wallets","type":"address[]"}],"name":"removeFromWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_numberCreator","type":"uint256"},{"internalType":"uint256","name":"_numberCreatorCeleb","type":"uint256"},{"internalType":"uint256","name":"_numberDevCeleb","type":"uint256"},{"internalType":"string","name":"_celebTokenBaseURI","type":"string"}],"name":"reserveByCreator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_number","type":"uint256"}],"name":"reserveByDeveloper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"reveal","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":[],"name":"seed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":"_baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_blankURI","type":"string"}],"name":"setBlankURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_celebTokenBaseURI","type":"string"}],"name":"setCelebDSABaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_wallets","type":"address[]"},{"internalType":"uint256[]","name":"_giveAways","type":"uint256[]"}],"name":"setGiveAways","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxMint","type":"uint256"}],"name":"setMaxMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_price","type":"uint256"}],"name":"setPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum NFTBase.STATUS","name":"_status","type":"uint8"}],"name":"setStatus","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"status","outputs":[{"internalType":"enum NFTBase.STATUS","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":[{"internalType":"address","name":"","type":"address"}],"name":"whitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelistCounts","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawLink","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

-----Decoded View---------------
Arg [0] : _VRFCoordinator (address): 0xf0d54349aDdcf704F77AE15b96510dEA15cb7952
Arg [1] : _LINKToken (address): 0x514910771AF9Ca656af840dff83E8264EcF986CA
Arg [2] : _keyHash (bytes32): 0xaa77729d3466ca35ae8d28b3bbac7cc36a5031efdc430821c02bc31a238af445
Arg [3] : _blankURI (string): ipfs://QmbxB1nFTQKboW8GdmfYCUaGVfkEWcF4qho6FiUs894BsQ
Arg [4] : _supply (uint256): 2501
Arg [5] : _developer (address): 0xcA1e0B67a81aFfa5a3bD5c15d4133eF6b244A9f7

-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 000000000000000000000000f0d54349addcf704f77ae15b96510dea15cb7952
Arg [1] : 000000000000000000000000514910771af9ca656af840dff83e8264ecf986ca
Arg [2] : aa77729d3466ca35ae8d28b3bbac7cc36a5031efdc430821c02bc31a238af445
Arg [3] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [4] : 00000000000000000000000000000000000000000000000000000000000009c5
Arg [5] : 000000000000000000000000ca1e0b67a81affa5a3bd5c15d4133ef6b244a9f7
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [7] : 697066733a2f2f516d627842316e4654514b626f573847646d66594355614756
Arg [8] : 666b455763463471686f36466955733839344273510000000000000000000000