Token

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

pragma solidity >=0.6.0 <0.7.0;
//SPDX-License-Identifier: MIT

//import "hardhat/console.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
//learn more: https://docs.openzeppelin.com/contracts/3.x/erc721

// GET LISTED ON OPENSEA: https://testnets.opensea.io/get-listed/step-two

contract MoonshotBot is ERC721, Ownable {

  address payable public constant gitcoin = 0xde21F729137C5Af1b01d73aF1dC21eFfa2B8a0d6;

  using Counters for Counters.Counter;
  Counters.Counter private _tokenIds;

  string [] private uris;

  constructor() public ERC721("MoonShotBots", "MSB") {
    _setBaseURI("https://gateway.pinata.cloud/ipfs/QmdkZW8hMbSSBjrFov7sGoeoxvYJnVp8gx7pgByCNoM6ko/");
    uris = ['Adelyn.json','Cairo.json','Dominic.json','Harlow.json','Khaleesi.json','Meredith.json','Ryan.json','Adler.json','Cal.json','','Donald.json','Harmony.json','Killian.json','Michael.json','Ryann.json','Ahmir.json','Callan.json','Dorian.json','Hope.json','Kolton.json','Milana.json','Saoirse.json','Alaya.json','Cameron.json','Dream.json','Ian.json','','Kora.json','Mohammad.json','Sincere.json','Albert.json','Cannon.json','Edwin.json','Ibrahim.json','Lainey.json','Molly.json','Skye.json','Alden.json','Carlos.json','Elaine.json','Indie.json','Laurel.json','Myles.json','Solomon.json','Alessandro.json','Carly.json','Eliana.json','Israel.json','Layton.json','Nathanael.json','Steven.json','Alex.json','Case.json','Elianna.json','Izaiah.json','Leandro.json','Nellie.json','Talon.json','Alexis.json','Casen.json','Elizabeth.json','Jake.json','Leonard.json','Nicholas.json','Taylor.json','Alia.json','Cayson.json','Elliana.json','Jalen.json','Lexie.json','Niko.json','Tessa.json','Alyssa.json','Cesar.json','Ellianna.json','Jase.json','Liana.json','Oaklyn.json','Theo.json','Amora.json','Charlie.json','Elyse.json','Jaxtyn.json','Liliana.json','Oaklynn.json','Tomas.json','Anakin.json','Claire.json','Evan.json','Jay.json','','Linda.json','Paisley.json','Ty.json','Angelina.json','Clark.json','Evangeline.json','Jeffrey.json','Liv.json','','Parker.json','Tyler.json','Annabella.json','Clementine.json','Eve.json','','Jianna.json','Lucca.json','Paul.json','Van.json','Ariel.json','Coen.json','Everett.json','Jude.json','Luciana.json','Penelope.json','Walter.json','Ariyah.json','Corey.json','Evie.json','Judith.json','Madisyn.json','Peter.json','Watson.json','Arthur.json','Dakari.json','Fallon.json','Julian.json','Makenna.json','Presley.json','Westin.json','Axl.json','','Dallas.json','Finley.json','Julio.json','Malaya.json','Quinn.json','Ximena.json','Axton.json','Daniel.json','Gary.json','Kade.json','Marcos.json','Quinton.json','Yousef.json','Belen.json','Danielle.json','Georgia.json','Kairi.json','Marianna.json','Raven.json','Zainab.json','Braden.json','Danny.json','Grace.json','Kamari.json','Marleigh.json','Rhea.json','Zelda.json','Bradley.json','Darwin.json','Halo.json','Kareem.json','Mateo.json','Rhett.json','Zola.json','Brecken.json','Davis.json','Hana.json','Kash.json','Maxwell.json','Rhys.json','read_files.py','Brinley.json','Daxton.json','Hanna.json','Kashton.json','Mckinley.json','Rosemary.json','Brynlee.json','Della.json','Hannah.json','Kayson.json','Melissa.json','Royal.json'];
  }

  uint256 public constant limit = 100;
  uint256 public requested;

  function mintItem(address to, string memory tokenURI)
      private
      returns (uint256)
  {
      require( requested < limit , "DONE MINTING");
      require( _tokenIds.current() < limit , "DONE MINTING");
      _tokenIds.increment();

      uint256 id = _tokenIds.current();
      _mint(to, id);
      _setTokenURI(id, tokenURI);

      return id;
  }

  event Request(address to, uint256 value);

  function requestMint()
      public
      payable
  {
    require( requested++ < limit , "DONE MINTING");
    require( msg.value >= 0.001 ether, "NOT ENOUGH");
    (bool success,) = gitcoin.call{value:msg.value}("");
    require( success, "could not send");
    emit Request(msg.sender, msg.value);
    mintItem(msg.sender, uris[requested]);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "../../GSN/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 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 override returns (address) {
        return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
    }

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

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

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

        string memory _tokenURI = _tokenURIs[tokenId];

        // If there is no base URI, return the token URI.
        if (bytes(_baseURI).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(_baseURI, _tokenURI));
        }
        // If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
        return string(abi.encodePacked(_baseURI, 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 returns (string memory) {
        return _baseURI;
    }

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

    /**
     * @dev See {IERC721Enumerable-totalSupply}.
     */
    function totalSupply() public view 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 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 = ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

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

        _approve(to, tokenId);
    }

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

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public 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 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 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 returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ownerOf(tokenId);
        return (spender == owner || getApproved(tokenId) == spender || 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 = ownerOf(tokenId);

        _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(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        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);
    }

    function _approve(address to, uint256 tokenId) private {
        _tokenApprovals[tokenId] = to;
        emit Approval(ownerOf(tokenId), to, tokenId);
    }

    /**
     * @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;

import "../math/SafeMath.sol";

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented or decremented by one. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath}
 * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never
 * directly accessed.
 */
library Counters {
    using SafeMath for uint256;

    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        // The {SafeMath} overflow check can be skipped here, see the comment at the top
        counter._value += 1;
    }

    function decrement(Counter storage counter) internal {
        counter._value = counter._value.sub(1);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

import "../GSN/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.
 */
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 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;

/*
 * @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;

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;

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;

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;

/**
 * @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;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts may inherit from this and call {_registerInterface} to declare
 * their support of an interface.
 */
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 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;

/**
 * @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, 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) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * 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);
        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-contracts/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) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        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) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.2;

/**
 * @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 in 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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        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;

/**
 * @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 v3.0.0, only sets of type `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];
    }

    // 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(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(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(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(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;

/**
 * @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 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) {
        return _get(map, key, "EnumerableMap: nonexistent key");
    }

    /**
     * @dev Same as {_get}, with a custom error message when `key` is not in the map.
     */
    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(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(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(uint256(_get(map._inner, bytes32(key))));
    }

    /**
     * @dev Same as {get}, with a custom error message when `key` is not in the map.
     */
    function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
        return address(uint256(_get(map._inner, bytes32(key), errorMessage)));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @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--] = byte(uint8(48 + temp % 10));
            temp /= 10;
        }
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

/**
 * @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);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Request","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"gitcoin","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"limit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"requestMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"requested","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":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"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"}]

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