Token Lil Baby Punk

NFT  
 

Overview [ERC-721]

Max Total Supply:
4,850 LBP

Holders:
2,266

Transfers:
-

 
Loading
[ Download CSV Export  ] 
Loading
[ Download CSV Export  ] 
Loading

OVERVIEW

5,000 Lil BabyPunks were born, now parentless and in need of a welcoming home.

# Exchange Pair Price  24H Volume % Volume
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
LBPNFT

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion
File 1 of 14 : LBPNFT.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";

contract LBPNFT is ERC721Enumerable, Ownable {
    using Strings for uint256;
    using ECDSA for bytes32;

    uint256 public constant LBP_GIFT = 500;
    uint256 public constant LBP_PUBLIC = 9499;
    uint256 public constant LBP_MAX = LBP_PUBLIC + LBP_GIFT;
    uint256 public constant LBP_PRICE = 0.03 ether;
    uint256 public constant LBP_PRIVATE_PRICE = 0.02 ether;
    uint256 public constant LBP_PER_MINT = 5;
    
    mapping(string => bool) private _usedNonces;
    
    string private _contractURI;
    string private _tokenBaseURI = "https://api.babypunks.net/metadata/";
    address private _signerAddress = 0xFDA548926C2c3161B9409A3027FFcce9E7d6Ef25;
    address private _privateSignerAddress = 0xa5b69c2E15BdC33B32df777dC7c659e40176b259;

    string public proof;
    uint256 public giftedAmount;
    uint256 public publicAmountMinted;
    bool public saleLive;
    bool public locked;
    
    constructor() ERC721("Lil Baby Punk", "LBP") {}
    
    modifier notLocked {
      require(!locked, "Contract metadata methods are locked");
      _;
    }

    function hashTransaction(address sender, uint256 qty, string memory nonce) private pure returns(bytes32) {
      bytes32 hash = keccak256(abi.encodePacked(
        "\x19Ethereum Signed Message:\n32",
        keccak256(abi.encodePacked(sender, qty, nonce)))
      );
      return hash;
    }
    
    function matchAddresSigner(bytes32 hash, bytes memory signature, bool isPrivate) private view returns(bool) {
      return (isPrivate ? _privateSignerAddress : _signerAddress) == hash.recover(signature);
    }
    
    function buy(bytes32 hash, bytes memory signature, string memory nonce, uint256 tokenQuantity) external payable {
      require(saleLive, "SALE_CLOSED");
      require(matchAddresSigner(hash, signature, false), "DIRECT_MINT_DISALLOWED");
      require(!_usedNonces[nonce], "HASH_USED");
      require(hashTransaction(msg.sender, tokenQuantity, nonce) == hash, "HASH_FAIL");
      require(totalSupply() < LBP_MAX, "OUT_OF_STOCK");
      require(publicAmountMinted + tokenQuantity <= LBP_PUBLIC, "EXCEED_PUBLIC");
      require(tokenQuantity <= LBP_PER_MINT, "EXCEED_LBP_PER_MINT");
      require(LBP_PRICE * tokenQuantity <= msg.value, "INSUFFICIENT_ETH");
      
      for(uint256 i = 0; i < tokenQuantity; i++) {
          publicAmountMinted++;
          _safeMint(msg.sender, totalSupply() + 1);
      }
      
      _usedNonces[nonce] = true;
    }

    function privateBuy(bytes32 hash, bytes memory signature, string memory nonce, uint256 tokenQuantity) external payable {
      require(saleLive, "SALE_CLOSED");
      require(matchAddresSigner(hash, signature, true), "DIRECT_MINT_DISALLOWED");
      require(!_usedNonces[nonce], "HASH_USED");
      require(hashTransaction(msg.sender, tokenQuantity, nonce) == hash, "HASH_FAIL");
      require(totalSupply() < LBP_MAX, "OUT_OF_STOCK");
      require(publicAmountMinted + tokenQuantity <= LBP_PUBLIC, "EXCEED_PUBLIC");
      require(tokenQuantity <= LBP_PER_MINT, "EXCEED_LBP_PER_MINT");
      require(LBP_PRIVATE_PRICE * tokenQuantity <= msg.value, "INSUFFICIENT_ETH");
      
      for(uint256 i = 0; i < tokenQuantity; i++) {
          publicAmountMinted++;
          _safeMint(msg.sender, totalSupply() + 1);
      }
      
      _usedNonces[nonce] = true;
    }

    function gift(address[] calldata receivers) external onlyOwner {
        require(totalSupply() + receivers.length <= LBP_MAX, "MAX_MINT");
        require(giftedAmount + receivers.length <= LBP_GIFT, "GIFTS_EMPTY");
        
        for (uint256 i = 0; i < receivers.length; i++) {
            giftedAmount++;
            _safeMint(receivers[i], totalSupply() + 1);
        }
    }

    function withdraw() external onlyOwner {
        payable(msg.sender).transfer(address(this).balance);
    }
    
    function lockMetadata() external onlyOwner {
        locked = true;
    }
    
    function toggleSaleStatus() external onlyOwner {
        saleLive = !saleLive;
    }

    function setSignerAddress(address addr) external onlyOwner {
        _signerAddress = addr;
    }

    function setPrivateSignerAddress(address addr) external onlyOwner {
        _privateSignerAddress = addr;
    }

    function setBothSignerAddresses(address addr, address addr2) external onlyOwner {
        _signerAddress = addr;
        _privateSignerAddress = addr2;
    }    

    function setProvenanceHash(string calldata hash) external onlyOwner notLocked {
        proof = hash;
    }
    
    function setContractURI(string calldata URI) external onlyOwner notLocked {
        _contractURI = URI;
    }
    
    function setBaseURI(string calldata URI) external onlyOwner notLocked {
        _tokenBaseURI = URI;
    }    
    
    function contractURI() public view returns (string memory) {
        return _contractURI;
    }
    
    function tokenURI(uint256 tokenId) public view override(ERC721) returns (string memory) {
        require(_exists(tokenId), "Cannot query non-existent token");
        
        return string(abi.encodePacked(_tokenBaseURI, tokenId.toString()));
    }
}

File 2 of 14 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

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

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

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

    /**
     * @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 ||
            super.supportsInterface(interfaceId);
    }

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

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @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 virtual override {
        address owner = ERC721.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 virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

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

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

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

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

        _transfer(from, to, tokenId);
    }

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

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

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

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

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

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `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);

        _balances[to] += 1;
        _owners[tokenId] = to;

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

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

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

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

        _balances[owner] -= 1;
        delete _owners[tokenId];

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

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

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

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);
    }

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

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

    /**
     * @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` and `to` are never both zero.
     *
     * 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 {}
}

File 3 of 14 : ERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../ERC721.sol";
import "./IERC721Enumerable.sol";

/**
 * @dev This implements an optional extension of {ERC721} defined in the EIP that adds
 * enumerability of all the token ids in the contract as well as all token ids owned by each
 * account.
 */
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
    // Mapping from owner to list of owned token IDs
    mapping(address => mapping(uint256 => uint256)) private _ownedTokens;

    // Mapping from token ID to index of the owner tokens list
    mapping(uint256 => uint256) private _ownedTokensIndex;

    // Array with all token ids, used for enumeration
    uint256[] private _allTokens;

    // Mapping from token id to position in the allTokens array
    mapping(uint256 => uint256) private _allTokensIndex;

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
        return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
     */
    function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
        return _ownedTokens[owner][index];
    }

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

    /**
     * @dev See {IERC721Enumerable-tokenByIndex}.
     */
    function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
        require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
        return _allTokens[index];
    }

    /**
     * @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 override {
        super._beforeTokenTransfer(from, to, tokenId);

        if (from == address(0)) {
            _addTokenToAllTokensEnumeration(tokenId);
        } else if (from != to) {
            _removeTokenFromOwnerEnumeration(from, tokenId);
        }
        if (to == address(0)) {
            _removeTokenFromAllTokensEnumeration(tokenId);
        } else if (to != from) {
            _addTokenToOwnerEnumeration(to, tokenId);
        }
    }

    /**
     * @dev Private function to add a token to this extension's ownership-tracking data structures.
     * @param to address representing the new owner of the given token ID
     * @param tokenId uint256 ID of the token to be added to the tokens list of the given address
     */
    function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
        uint256 length = ERC721.balanceOf(to);
        _ownedTokens[to][length] = tokenId;
        _ownedTokensIndex[tokenId] = length;
    }

    /**
     * @dev Private function to add a token to this extension's token tracking data structures.
     * @param tokenId uint256 ID of the token to be added to the tokens list
     */
    function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
        _allTokensIndex[tokenId] = _allTokens.length;
        _allTokens.push(tokenId);
    }

    /**
     * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
     * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
     * gas optimizations e.g. when performing a transfer operation (avoiding double writes).
     * This has O(1) time complexity, but alters the order of the _ownedTokens array.
     * @param from address representing the previous owner of the given token ID
     * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
     */
    function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
        // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
        uint256 tokenIndex = _ownedTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary
        if (tokenIndex != lastTokenIndex) {
            uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];

            _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
            _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
        }

        // This also deletes the contents at the last position of the array
        delete _ownedTokensIndex[tokenId];
        delete _ownedTokens[from][lastTokenIndex];
    }

    /**
     * @dev Private function to remove a token from this extension's token tracking data structures.
     * This has O(1) time complexity, but alters the order of the _allTokens array.
     * @param tokenId uint256 ID of the token to be removed from the tokens list
     */
    function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
        // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
        // then delete the last slot (swap and pop).

        uint256 lastTokenIndex = _allTokens.length - 1;
        uint256 tokenIndex = _allTokensIndex[tokenId];

        // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
        // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
        // an 'if' statement (like in _removeTokenFromOwnerEnumeration)
        uint256 lastTokenId = _allTokens[lastTokenIndex];

        _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
        _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index

        // This also deletes the contents at the last position of the array
        delete _allTokensIndex[tokenId];
        _allTokens.pop();
    }
}

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

pragma solidity ^0.8.0;

import "../utils/Context.sol";

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
 *
 * These functions can be used to verify that a message was signed by the holder
 * of the private keys of a given address.
 */
library ECDSA {
    enum RecoverError {
        NoError,
        InvalidSignature,
        InvalidSignatureLength,
        InvalidSignatureS,
        InvalidSignatureV
    }

    function _throwError(RecoverError error) private pure {
        if (error == RecoverError.NoError) {
            return; // no error: do nothing
        } else if (error == RecoverError.InvalidSignature) {
            revert("ECDSA: invalid signature");
        } else if (error == RecoverError.InvalidSignatureLength) {
            revert("ECDSA: invalid signature length");
        } else if (error == RecoverError.InvalidSignatureS) {
            revert("ECDSA: invalid signature 's' value");
        } else if (error == RecoverError.InvalidSignatureV) {
            revert("ECDSA: invalid signature 'v' value");
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature` or error string. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     *
     * Documentation for signature generation:
     * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
     * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
     *
     * _Available since v4.3._
     */
    function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
        // Check the signature length
        // - case 65: r,s,v signature (standard)
        // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
        if (signature.length == 65) {
            bytes32 r;
            bytes32 s;
            uint8 v;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                s := mload(add(signature, 0x40))
                v := byte(0, mload(add(signature, 0x60)))
            }
            return tryRecover(hash, v, r, s);
        } else if (signature.length == 64) {
            bytes32 r;
            bytes32 vs;
            // ecrecover takes the signature parameters, and the only way to get them
            // currently is to use assembly.
            assembly {
                r := mload(add(signature, 0x20))
                vs := mload(add(signature, 0x40))
            }
            return tryRecover(hash, r, vs);
        } else {
            return (address(0), RecoverError.InvalidSignatureLength);
        }
    }

    /**
     * @dev Returns the address that signed a hashed message (`hash`) with
     * `signature`. This address can then be used for verification purposes.
     *
     * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
     * this function rejects them by requiring the `s` value to be in the lower
     * half order, and the `v` value to be either 27 or 28.
     *
     * IMPORTANT: `hash` _must_ be the result of a hash operation for the
     * verification to be secure: it is possible to craft signatures that
     * recover to arbitrary addresses for non-hashed data. A safe way to ensure
     * this is by receiving a hash of the original message (which may otherwise
     * be too long), and then calling {toEthSignedMessageHash} on it.
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, signature);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
     *
     * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address, RecoverError) {
        bytes32 s;
        uint8 v;
        assembly {
            s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
            v := add(shr(255, vs), 27)
        }
        return tryRecover(hash, v, r, s);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
     *
     * _Available since v4.2._
     */
    function recover(
        bytes32 hash,
        bytes32 r,
        bytes32 vs
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, r, vs);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Overload of {ECDSA-tryRecover} that receives the `v`,
     * `r` and `s` signature fields separately.
     *
     * _Available since v4.3._
     */
    function tryRecover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address, RecoverError) {
        // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
        // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
        // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
        // signatures from current libraries generate a unique signature with an s-value in the lower half order.
        //
        // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
        // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
        // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
        // these malleable signatures as well.
        if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
            return (address(0), RecoverError.InvalidSignatureS);
        }
        if (v != 27 && v != 28) {
            return (address(0), RecoverError.InvalidSignatureV);
        }

        // If the signature is valid (and not malleable), return the signer address
        address signer = ecrecover(hash, v, r, s);
        if (signer == address(0)) {
            return (address(0), RecoverError.InvalidSignature);
        }

        return (signer, RecoverError.NoError);
    }

    /**
     * @dev Overload of {ECDSA-recover} that receives the `v`,
     * `r` and `s` signature fields separately.
     */
    function recover(
        bytes32 hash,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (address) {
        (address recovered, RecoverError error) = tryRecover(hash, v, r, s);
        _throwError(error);
        return recovered;
    }

    /**
     * @dev Returns an Ethereum Signed Message, created from a `hash`. This
     * produces hash corresponding to the one signed with the
     * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
     * JSON-RPC method as part of EIP-191.
     *
     * See {recover}.
     */
    function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
        // 32 is the length in bytes of hash,
        // enforced by the type signature above
        return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
    }

    /**
     * @dev Returns an Ethereum Signed Typed Data, created from a
     * `domainSeparator` and a `structHash`. This produces hash corresponding
     * to the one signed with the
     * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
     * JSON-RPC method as part of EIP-712.
     *
     * See {recover}.
     */
    function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
    }
}

File 6 of 14 : IERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../../utils/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;
}

File 7 of 14 : IERC721Receiver.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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 8 of 14 : IERC721Metadata.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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 9 of 14 : Address.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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;
        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");

        (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");

        (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");

        (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");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal 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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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

pragma solidity ^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 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) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal 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);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

File 12 of 14 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 13 of 14 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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 14 of 14 : IERC721Enumerable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^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);
}

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

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":[],"name":"LBP_GIFT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LBP_MAX","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LBP_PER_MINT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LBP_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LBP_PRIVATE_PRICE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LBP_PUBLIC","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"hash","type":"bytes32"},{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"string","name":"nonce","type":"string"},{"internalType":"uint256","name":"tokenQuantity","type":"uint256"}],"name":"buy","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"contractURI","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":[{"internalType":"address[]","name":"receivers","type":"address[]"}],"name":"gift","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"giftedAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lockMetadata","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"locked","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"hash","type":"bytes32"},{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"string","name":"nonce","type":"string"},{"internalType":"uint256","name":"tokenQuantity","type":"uint256"}],"name":"privateBuy","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"proof","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"publicAmountMinted","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"saleLive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"URI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"address","name":"addr2","type":"address"}],"name":"setBothSignerAddresses","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"URI","type":"string"}],"name":"setContractURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"setPrivateSignerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"hash","type":"string"}],"name":"setProvenanceHash","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"setSignerAddress","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":[],"name":"toggleSaleStatus","outputs":[],"stateMutability":"nonpayable","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":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.