Contract 0xd5bbcC9F1BBd0B7619705DD43dA71c1CbAfb3B62

 
 
Txn Hash
Method
Block
From
To
Value
0xb75f03dd474e612339bc81121d6c6e30a6b225b62c25ca09d452b73e30c70276Set Approval For...157722142022-10-18 3:10:1150 days 7 hrs ago0x282db35cd59c6ee6c758bf7523c8cff123d65de3 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00082403 17.8791878
0x9c8a367a7b3f4892b0521e9ad72f7e938964b2022e7c452d48910b7f930f4cbeSafe Transfer Fr...156579462022-10-02 4:03:3566 days 6 hrs ago0x2ef1d28e1d9f15e467467b3e0a742b9f99a62fd0 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00030527 5.84309062
0x71fa021a197e86abc6f7bf421662a324c442d139479ae888458998103e045082Safe Transfer Fr...156578002022-10-02 3:34:2366 days 6 hrs ago0x2ef1d28e1d9f15e467467b3e0a742b9f99a62fd0 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00035986 5.18938128
0x075465c7beeb754ba098482443682b1fbca962801a0715f1c1167a8e87e3c312Withdraw155970832022-09-23 15:57:1174 days 18 hrs ago0xc81a766a80c94aa6ad71d7ada852c88fe01e519d IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00042677 13
0x0d5b1e76b3e85d94af1925329cb8ad6fe7940d02d1c4114f80412b4cae882237Set Approval For...155942252022-09-23 6:22:1175 days 4 hrs agoENS Name principeribelle.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00026185 5.68150589
0x6e05dd0fa111b0229a2231e8e0c7a6c09506ad2d0afaac4b93adfad4131493fdSet Approval For...155921852022-09-22 23:32:1175 days 11 hrs agoENS Name *🇩🇪8.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.0002947 6.39434244
0x9510efb68b52cba9093b246e405cebbc5c4b15f47baf29b38c80c1701484e455Set Approval For...155920622022-09-22 23:07:3575 days 11 hrs agoENS Name 47-ak.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00042897 9.30762037
0xb48132ef8d14a98e8b1d36260fdc6f7a4ed4e2f6b74c3a0dabecc32d02352861Mint155918942022-09-22 22:33:4775 days 11 hrs ago0xfc1d367b8554157bb639bad6bbdac34a357b0b6d IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.05 Ether0.00048966 6.45272937
0xb16a63ef47e619f4d526a6203a3718db33fc70f486ddc1d61898c402d7c70394Set Approval For...155918792022-09-22 22:30:4775 days 12 hrs ago0x1f58c835e472b95fae845656dc16919eb835b2b6 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00031942 6.93063116
0x326e83903f0464c7ebe917360eebc25375896169d0f5ab850502074d678017c8Mint155918732022-09-22 22:29:3575 days 12 hrs ago0x5c61a9a1450c5926574bb9e9024ebb25b9dc58af IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.01 Ether0.00047343 7.06900812
0xc3b3663b1094bb8b7f086c8f5d8ee08539beaa34efb81d049c703f1d6539d916Set Approval For...155918702022-09-22 22:28:5975 days 12 hrs agoENS Name vdrizz.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00037091 8.04774182
0xf7978db42a8b5d150cc5b734c789f0079860deb018aabcde6cf8a53c49e3e054Mint155918592022-09-22 22:26:4775 days 12 hrs ago0x073b047c044f63df732c43b2881a6c6bfafe7b52 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.05 Ether0.00050474 6.65142332
0xf74e6ec93672d6ae935a2d362de55f5245442c807bf693e72cb4830ac91341b1Mint155918522022-09-22 22:25:2375 days 12 hrs ago0xc81a766a80c94aa6ad71d7ada852c88fe01e519d IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.01 Ether0.00045423 6.78240681
0x03ebefe30c618f7a383cb859861fe90562bd32b72f77f365ec57fa30766091a3Mint155918522022-09-22 22:25:2375 days 12 hrs ago0xbeb8fc0a46861ddcffcf78fd486ca78abbebde14 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.05 Ether0.00051468 6.78240681
0x27e344d78e3dc712bf31d64e9b7b317cba24ed1dbbdb88a175bf80b3581db1b4Mint155918472022-09-22 22:24:2375 days 12 hrs agoENS Name robotcpd.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.02 Ether0.00047752 6.90053043
0xd4eb0798bd71b1eac6155075a09ff1f0836955fe1990ccec2591c4ddc5dd523cMint155918442022-09-22 22:23:4775 days 12 hrs ago0x073b047c044f63df732c43b2881a6c6bfafe7b52 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.08 Ether0.00061816 7.48666689
0xa760a4cb5a2b22653d1fef5b8c518a8a62139318e2b5826bd1389fcdb85aaa06Mint155918392022-09-22 22:22:4775 days 12 hrs ago0xbeb8fc0a46861ddcffcf78fd486ca78abbebde14 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.1 Ether0.00061196 7.03208747
0x1964b8ffb6194aa2f3dc791ca4b25e24c47c8e0bcc9ef98c84264aa7654e134cMint155918392022-09-22 22:22:4775 days 12 hrs agoENS Name robotcpd.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.01 Ether0.0005912 7.03208747
0x9d6043289b1dda888b797c06910dada460ff36c7a6f9e9476e8cb9c8e4e30d9eSet Approval For...155918362022-09-22 22:22:1175 days 12 hrs agoENS Name mab212.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00039037 8.46994219
0xab1b2a4caf5cca7b9fb2d3ec93f3bc6b93ceb2d27108c6aefb450da5987ffcb4Mint155918342022-09-22 22:21:4775 days 12 hrs ago0x715def1cb9f2fda56df536d36f49ff6666633f20 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.05 Ether0.00055479 7.31100116
0x24231efd0442d278a0c0a9058fa24c8e8e6c493f4066121d463b10e0a3ccfe4fMint155918322022-09-22 22:21:2375 days 12 hrs ago0xbeb8fc0a46861ddcffcf78fd486ca78abbebde14 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.1 Ether0.00060668 6.97140249
0xd1255b98a7d1d09e3023c33fd684bacc8a79e095d23d75c68b2761b8e2f75257Mint155918292022-09-22 22:20:4775 days 12 hrs ago0xe27c3bf7ee406a15d8e9348032cf8254ec704c8c IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620.09 Ether0.0006195 7.30572979
0xcec27bed6d1b9b8fddf8067edc7d7e27c585ebcd34fbb4264672acf71e590979Set Approval For...155918272022-09-22 22:20:2375 days 12 hrs ago0x8541279e59532c49488282f50402a830879eb0d0 IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00036618 7.94507895
0xe1313a427b034ffa378a953ad7dc3fb53660e11cfbc2542ed9efe481de95da59Set Approval For...155918252022-09-22 22:19:5975 days 12 hrs ago0x2ad8cce140ccffceb0eea31f439fde90af7d87af IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.00040192 8.72060359
0xe015aebf3f892b8d58b7ce6a96c196c72b9637aa2a2b8347e7b7d291a0f2cf67Set Approval For...155918242022-09-22 22:19:4775 days 12 hrs agoENS Name mors.eth IN  0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620 Ether0.000350937.61421636
[ Download CSV Export 
Latest 1 internal transaction
Parent Txn Hash Block From To Value
0x075465c7beeb754ba098482443682b1fbca962801a0715f1c1167a8e87e3c312155970832022-09-23 15:57:1174 days 18 hrs ago 0xd5bbcc9f1bbd0b7619705dd43da71c1cbafb3b620xc81a766a80c94aa6ad71d7ada852c88fe01e519d1.23 Ether
[ Download CSV Export 
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
RenewAland

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
File 1 of 14 : project.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.6;

import "ERC721A.sol";
import "Ownable.sol";
import "ReentrancyGuard.sol";
import "MerkleProof.sol";

contract RenewAland is Ownable, ERC721A, ReentrancyGuard {
    uint256 public maxSupply = 600;
    uint256 public maxMintPerTx = 10;
    uint256 public price = 0.01 * 10**18; //10000000000000000 = 0.01
    bytes32 public whitelistMerkleRoot =
        0xf551eb4849bc8311f17ebc171e7e5e06477c2aec2445081d2922165a312d3772;
    bool public publicPaused = true;
    bool public revealed = false;
    string public baseURI;
    string public hiddenMetadataUri =
        "ipfs://QmWkS7jhfVfkingJFwPsjSGn9Sr7Vw3JFdu8cG3tmWfjER";

    constructor() public ERC721A("RenewAland Collective", "GREEN", 600, 600) {}

    function whitelistMint(uint256 amount, bytes32[] calldata _merkleProof)
        public
        payable
    {
        bytes32 leaf = keccak256(abi.encodePacked(msg.sender));
        uint256 ts = totalSupply();
        require(ts + amount <= maxSupply, "Purchase would exceed max tokens");

        require(
            MerkleProof.verify(_merkleProof, whitelistMerkleRoot, leaf),
            "Invalid proof!"
        );

        {
            _safeMint(msg.sender, amount);
        }
    }

    function mint(uint256 amount) external payable {
        uint256 ts = totalSupply();
        require(publicPaused == false, "Mint not open for public");
        require(ts + amount <= maxSupply, "Purchase would exceed max tokens");
        require(
            amount <= maxMintPerTx,
            "Amount should not exceed max mint number"
        );

        require(msg.value >= price * amount, "Please send the exact amount.");

        _safeMint(msg.sender, amount);
    }

    function setPublicPaused(bool paused) external onlyOwner {
        publicPaused = paused;
    }

    function setWhitelistMerkleRoot(bytes32 _merkleRoot) external onlyOwner {
        whitelistMerkleRoot = _merkleRoot;
    }

    function setPrice(uint256 _price) external onlyOwner {
        price = _price;
    }

    function whitelistStop(uint256 _maxSupply) external onlyOwner {
        maxSupply = _maxSupply;
    }

    function setMaxPerTx(uint256 _maxMintPerTx) external onlyOwner {
        maxMintPerTx = _maxMintPerTx;
    }

    function setRevealed(bool _state) public onlyOwner {
        revealed = _state;
    }

    function setBaseURI(string calldata newBaseURI) external onlyOwner {
        baseURI = newBaseURI;
    }

    function _baseURI() internal view override returns (string memory) {
        return baseURI;
    }

    function setHiddenMetadataUri(string memory _hiddenMetadataUri)
        public
        onlyOwner
    {
        hiddenMetadataUri = _hiddenMetadataUri;
    }

    function tokenURI(uint256 _tokenId)
        public
        view
        virtual
        override
        returns (string memory)
    {
        require(
            _exists(_tokenId),
            "ERC721Metadata: URI query for nonexistent token"
        );

        if (revealed == false) {
            return hiddenMetadataUri;
        }

        string memory currentBaseURI = _baseURI();
        return
            bytes(currentBaseURI).length > 0
                ? string(abi.encodePacked(currentBaseURI, _tokenId.toString()))
                : "";
    }

    function withdraw() external onlyOwner nonReentrant {
        (bool success, ) = msg.sender.call{value: address(this).balance}("");
        require(success, "Transfer failed.");
    }
}

File 2 of 14 : ERC721A.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "IERC721.sol";
import "IERC721Receiver.sol";
import "IERC721Metadata.sol";
import "IERC721Enumerable.sol";
import "Address.sol";
import "Context.sol";
import "Strings.sol";
import "ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata and Enumerable extension. Built to optimize for lower gas during batch mints.
 *
 * Assumes serials are sequentially minted starting at 0 (e.g. 0, 1, 2, 3..).
 *
 * Assumes the number of issuable tokens (collection size) is capped and fits in a uint128.
 *
 * Does not support burning tokens to address(0).
 */
contract ERC721A is
    Context,
    ERC165,
    IERC721,
    IERC721Metadata,
    IERC721Enumerable
{
    using Address for address;
    using Strings for uint256;

    struct TokenOwnership {
        address addr;
        uint64 startTimestamp;
    }

    struct AddressData {
        uint128 balance;
        uint128 numberMinted;
    }

    uint256 private currentIndex = 0;

    uint256 internal immutable collectionSize;
    uint256 internal immutable maxBatchSize;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to ownership details
    // An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
    mapping(uint256 => TokenOwnership) private _ownerships;

    // Mapping owner address to address data
    mapping(address => AddressData) private _addressData;

    // 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;

    /**
     * @dev
     * `maxBatchSize` refers to how much a minter can mint at a time.
     * `collectionSize_` refers to how many tokens are in the collection.
     */
    constructor(
        string memory name_,
        string memory symbol_,
        uint256 maxBatchSize_,
        uint256 collectionSize_
    ) public {
        require(
            collectionSize_ > 0,
            "ERC721A: collection must have a nonzero supply"
        );
        require(maxBatchSize_ > 0, "ERC721A: max batch size must be nonzero");
        _name = name_;
        _symbol = symbol_;
        maxBatchSize = maxBatchSize_;
        collectionSize = collectionSize_;
    }

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

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index)
        public
        view
        override
        returns (uint256)
    {
        require(index < totalSupply(), "ERC721A: global index out of bounds");
        return index;
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     * This read function is O(collectionSize). If calling from a separate contract, be sure to test gas first.
     * It may also degrade with extremely large collection sizes (e.g >> 10000), test for your use case.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index)
        public
        view
        override
        returns (uint256)
    {
        require(index < balanceOf(owner), "ERC721A: owner index out of bounds");
        uint256 numMintedSoFar = totalSupply();
        uint256 tokenIdsIdx = 0;
        address currOwnershipAddr = address(0);
        for (uint256 i = 0; i < numMintedSoFar; i++) {
            TokenOwnership memory ownership = _ownerships[i];
            if (ownership.addr != address(0)) {
                currOwnershipAddr = ownership.addr;
            }
            if (currOwnershipAddr == owner) {
                if (tokenIdsIdx == index) {
                    return i;
                }
                tokenIdsIdx++;
            }
        }
        revert("ERC721A: unable to get token of owner by index");
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override(ERC165, IERC165)
        returns (bool)
    {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            interfaceId == type(IERC721Enumerable).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view override returns (uint256) {
        require(
            owner != address(0),
            "ERC721A: balance query for the zero address"
        );
        return uint256(_addressData[owner].balance);
    }

    function _numberMinted(address owner) internal view returns (uint256) {
        require(
            owner != address(0),
            "ERC721A: number minted query for the zero address"
        );
        return uint256(_addressData[owner].numberMinted);
    }

    function ownershipOf(uint256 tokenId)
        internal
        view
        returns (TokenOwnership memory)
    {
        require(_exists(tokenId), "ERC721A: owner query for nonexistent token");

        uint256 lowestTokenToCheck;
        if (tokenId >= maxBatchSize) {
            lowestTokenToCheck = tokenId - maxBatchSize + 1;
        }

        for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
            TokenOwnership memory ownership = _ownerships[curr];
            if (ownership.addr != address(0)) {
                return ownership;
            }
        }

        revert("ERC721A: unable to determine the owner of token");
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view override returns (address) {
        return ownershipOf(tokenId).addr;
    }

    /**
     * @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 baseURI = _baseURI();
        return
            bytes(baseURI).length > 0
                ? string(abi.encodePacked(baseURI, tokenId.toString()))
                : "";
    }

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

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public override {
        address owner = ERC721A.ownerOf(tokenId);
        require(to != owner, "ERC721A: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721A: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId, owner);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId)
        public
        view
        override
        returns (address)
    {
        require(
            _exists(tokenId),
            "ERC721A: approved query for nonexistent token"
        );

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved)
        public
        override
    {
        require(operator != _msgSender(), "ERC721A: 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 override {
        _transfer(from, to, tokenId);
    }

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

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public override {
        _transfer(from, to, tokenId);
        require(
            _checkOnERC721Received(from, to, tokenId, _data),
            "ERC721A: 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`),
     */
    function _exists(uint256 tokenId) internal view returns (bool) {
        return tokenId < currentIndex;
    }

    function _safeMint(address to, uint256 quantity) internal {
        _safeMint(to, quantity, "");
    }

    /**
     * @dev Mints `quantity` tokens and transfers them to `to`.
     *
     * Requirements:
     *
     * - there must be `quantity` tokens remaining unminted in the total collection.
     * - `to` cannot be the zero address.
     * - `quantity` cannot be larger than the max batch size.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(
        address to,
        uint256 quantity,
        bytes memory _data
    ) internal {
        uint256 startTokenId = currentIndex;
        require(to != address(0), "ERC721A: mint to the zero address");
        // We know if the first token in the batch doesn't exist, the other ones don't as well, because of serial ordering.
        require(!_exists(startTokenId), "ERC721A: token already minted");
        require(quantity <= maxBatchSize, "ERC721A: quantity to mint too high");

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

        AddressData memory addressData = _addressData[to];
        _addressData[to] = AddressData(
            addressData.balance + uint128(quantity),
            addressData.numberMinted + uint128(quantity)
        );
        _ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));

        uint256 updatedIndex = startTokenId;

        for (uint256 i = 0; i < quantity; i++) {
            emit Transfer(address(0), to, updatedIndex);
            require(
                _checkOnERC721Received(address(0), to, updatedIndex, _data),
                "ERC721A: transfer to non ERC721Receiver implementer"
            );
            updatedIndex++;
        }

        currentIndex = updatedIndex;
        _afterTokenTransfers(address(0), to, startTokenId, quantity);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *
     * 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
    ) private {
        TokenOwnership memory prevOwnership = ownershipOf(tokenId);

        bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
            getApproved(tokenId) == _msgSender() ||
            isApprovedForAll(prevOwnership.addr, _msgSender()));

        require(
            isApprovedOrOwner,
            "ERC721A: transfer caller is not owner nor approved"
        );

        require(
            prevOwnership.addr == from,
            "ERC721A: transfer from incorrect owner"
        );
        require(to != address(0), "ERC721A: transfer to the zero address");

        _beforeTokenTransfers(from, to, tokenId, 1);

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

        _addressData[from].balance -= 1;
        _addressData[to].balance += 1;
        _ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));

        // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
        // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
        uint256 nextTokenId = tokenId + 1;
        if (_ownerships[nextTokenId].addr == address(0)) {
            if (_exists(nextTokenId)) {
                _ownerships[nextTokenId] = TokenOwnership(
                    prevOwnership.addr,
                    prevOwnership.startTimestamp
                );
            }
        }

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

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

    uint256 public nextOwnerToExplicitlySet = 0;

    /**
     * @dev Explicitly set `owners` to eliminate loops in future calls of ownerOf().
     */
    function _setOwnersExplicit(uint256 quantity) internal {
        uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;
        require(quantity > 0, "quantity must be nonzero");
        uint256 endIndex = oldNextOwnerToSet + quantity - 1;
        if (endIndex > collectionSize - 1) {
            endIndex = collectionSize - 1;
        }
        // We know if the last one in the group exists, all in the group exist, due to serial ordering.
        require(_exists(endIndex), "not enough minted yet for this cleanup");
        for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) {
            if (_ownerships[i].addr == address(0)) {
                TokenOwnership memory ownership = ownershipOf(i);
                _ownerships[i] = TokenOwnership(
                    ownership.addr,
                    ownership.startTimestamp
                );
            }
        }
        nextOwnerToExplicitlySet = endIndex + 1;
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try
                IERC721Receiver(to).onERC721Received(
                    _msgSender(),
                    from,
                    tokenId,
                    _data
                )
            returns (bytes4 retval) {
                return retval == IERC721Receiver(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert(
                        "ERC721A: transfer to non ERC721Receiver implementer"
                    );
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     */
    function _beforeTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}

    /**
     * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
     * minting.
     *
     * startTokenId - the first token id to be transferred
     * quantity - the amount to be transferred
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero.
     * - `from` and `to` are never both zero.
     */
    function _afterTokenTransfers(
        address from,
        address to,
        uint256 startTokenId,
        uint256 quantity
    ) internal virtual {}
}

File 3 of 14 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "IERC165.sol";

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

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

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

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

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

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

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

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

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

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

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

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

File 4 of 14 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

File 5 of 14 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

File 6 of 14 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

import "IERC721.sol";

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

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

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

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

File 7 of 14 : IERC721Enumerable.sol
// 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);
}

File 8 of 14 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

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

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

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

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

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

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

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

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

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

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

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

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

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

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

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

File 9 of 14 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

File 10 of 14 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

File 11 of 14 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "IERC165.sol";

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

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

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

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

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

File 12 of 14 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

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

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

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

File 13 of 14 : ReentrancyGuard.sol
// 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;
    }
}

File 14 of 14 : MerkleProof.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev These functions deal with verification of Merkle trees (hash trees),
 */
library MerkleProof {
    /**
     * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
     * defined by `root`. For this, a `proof` must be provided, containing
     * sibling hashes on the branch from the leaf to the root of the tree. Each
     * pair of leaves and each pair of pre-images are assumed to be sorted.
     */
    function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) {
        bytes32 computedHash = leaf;

        for (uint256 i = 0; i < proof.length; i++) {
            bytes32 proofElement = proof[i];

            if (computedHash <= proofElement) {
                // Hash(current computed hash + current element of the proof)
                computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
            } else {
                // Hash(current element of the proof + current computed hash)
                computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
            }
        }

        // Check if the computed hash (root) is equal to the provided root
        return computedHash == root;
    }
}

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

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"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":"hiddenMetadataUri","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"maxMintPerTx","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"mint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextOwnerToExplicitlySet","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"publicPaused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revealed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"string","name":"newBaseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_hiddenMetadataUri","type":"string"}],"name":"setHiddenMetadataUri","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxMintPerTx","type":"uint256"}],"name":"setMaxPerTx","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_price","type":"uint256"}],"name":"setPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"paused","type":"bool"}],"name":"setPublicPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_state","type":"bool"}],"name":"setRevealed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"}],"name":"setWhitelistMerkleRoot","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"},{"inputs":[],"name":"whitelistMerkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32[]","name":"_merkleProof","type":"bytes32[]"}],"name":"whitelistMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxSupply","type":"uint256"}],"name":"whitelistStop","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

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

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