ETH Price: $3,750.74 (+6.15%)

Transaction Decoder

Block:
14001265 at Jan-14-2022 03:40:02 AM +UTC
Transaction Fee:
0.00670821991169225 ETH $25.16
Gas Used:
46,270 Gas / 144.979898675 Gwei

Emitted Events:

241 Cyborg86.ApprovalForAll( owner=[Sender] 0x3f32613fd7f10f47469e344de162d72e619fd94e, operator=0xfd04B743...deE667B7E, approved=True )

Account State Difference:

  Address   Before After State Difference Code
0x3F32613F...e619fD94E
0.322907245332752931 Eth
Nonce: 135
0.316199025421060681 Eth
Nonce: 136
0.00670821991169225
(F2Pool Old)
4,239.291054788289987918 Eth4,239.291120028989987918 Eth0.0000652407
0xF1536ab2...f6ef0634b

Execution Trace

Cyborg86.setApprovalForAll( operator=0xfd04B743522CcE77d6F1F98A016A7b3deE667B7E, approved=True )
{"Address.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn\u0027t rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length \u003e 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity\u0027s `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance \u003e= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance \u003e= value, \"Address: insufficient balance for call\");\n        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn\u0027t, either by bubbling the\n     * revert reason using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length \u003e 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}"},"Context.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}"},"Counters.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n */\nlibrary Counters {\n    struct Counter {\n        // This variable should never be directly accessed by users of the library: interactions must be restricted to\n        // the library\u0027s function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n        // this feature: see https://github.com/ethereum/solidity/issues/4637\n        uint256 _value; // default: 0\n    }\n\n    function current(Counter storage counter) internal view returns (uint256) {\n        return counter._value;\n    }\n\n    function increment(Counter storage counter) internal {\n        unchecked {\n            counter._value += 1;\n        }\n    }\n\n    function decrement(Counter storage counter) internal {\n        uint256 value = counter._value;\n        require(value \u003e 0, \"Counter: decrement overflow\");\n        unchecked {\n            counter._value = value - 1;\n        }\n    }\n\n    function reset(Counter storage counter) internal {\n        counter._value = 0;\n    }\n}"},"Cyborg86.sol":{"content":"// SPDX-License-Identifier: MIT\r\npragma solidity \u003e=0.8.4;\r\n\r\nimport \"./ERC721.sol\";\r\nimport \"./Ownable.sol\";\r\nimport \"./PaymentSplitter.sol\";\r\nimport \"./ReentrancyGuard.sol\";\r\nimport \"./Strings.sol\";\r\n\r\n\r\ncontract Cyborg86 is ERC721, Ownable, PaymentSplitter, ReentrancyGuard {\r\n    using Strings for uint256;\r\n\r\n    enum WorkflowStatus {\r\n        Before,\r\n        FirstSale,\r\n        SecondSale,\r\n        Sale,\r\n        SoldOut,\r\n        Reveal\r\n    }\r\n\r\n    struct GiveawayWallet {\r\n        address recipient;\r\n        bool eligible;\r\n        uint[] claimableIds;\r\n        bool minted;\r\n    }\r\n\r\n    string internal baseTokenURI;\r\n    string internal unrevealedURI;\r\n    string internal uriSuffix = \".json\";\r\n\r\n    uint nonce = 0;\r\n    bool public firstSaleActive = false;\r\n    bool public secondSaleActive = false;\r\n    bool public saleActive = false;\r\n    bool internal revealed = false;\r\n    uint public totalSupply = 8600;\r\n    uint public price = 0.25 ether;\r\n    uint public whitelistPrice = 0.22 ether;\r\n    uint public whitelist2Price = 0.25 ether;\r\n    uint public maxMintPublic = 100;\r\n    uint public maxMintFirst = 10;\r\n    uint public maxMintSecond = 8;\r\n\r\n    WorkflowStatus public workflow;\r\n\r\n    address[] private _team = [0x486992EC99a2e81875E7feC7FAa170dEDF2497Dc, 0x9Fe16f720bF0447C9EcFeB6F1f6d7d5893996519];\r\n    uint256[] private _teamShares = [2, 98];\r\n\r\n    mapping(address =\u003e bool) public whitelist1Wallets;\r\n    mapping(address =\u003e bool) public whitelist2Wallets;\r\n\r\n    mapping(address =\u003e uint256) public mintPublicSale;\r\n    mapping(address =\u003e uint256) public mintWhitelist1;\r\n    mapping(address =\u003e uint256) public mintWhitelist2;\r\n\r\n    GiveawayWallet[] public giveawayWallets;\r\n    mapping(uint256 =\u003e bool) public reservedTokensGiveaway;\r\n\r\n    event WorkflowStatusChange(WorkflowStatus previousStatus, WorkflowStatus newStatus);\r\n    event Mint(address owner, uint qty);\r\n    event MintFirstSale(address owner, uint qty);\r\n    event MintSecondSale(address owner, uint qty);\r\n    event Giveaway(address to, uint qty);\r\n    event Withdraw(uint amount);\r\n\r\n\r\n    constructor() ERC721(\"C86 Cyborg\", \"C86\") PaymentSplitter(_team, _teamShares) {\r\n        workflow = WorkflowStatus.Before;\r\n    }\r\n\r\n    function setPrice(uint newPrice) external onlyOwner {\r\n        price = newPrice;\r\n    }\r\n\r\n    function setWhitelistPrice(uint newPrice) external onlyOwner {\r\n        whitelistPrice = newPrice;\r\n    }\r\n\r\n    function setWhitelist2Price(uint newPrice) external onlyOwner {\r\n        whitelist2Price = newPrice;\r\n    }\r\n\r\n    function setTotalSupply(uint newSupply) external onlyOwner {\r\n        totalSupply = newSupply;\r\n    }\r\n\r\n    function setSaleActive(bool val) public onlyOwner {\r\n        require(!firstSaleActive, \"Cyborg86: First sale still running\");\r\n        require(!secondSaleActive, \"Cyborg86: second sale still running\");\r\n        saleActive = val;\r\n        workflow = WorkflowStatus.Sale;\r\n\r\n        emit WorkflowStatusChange(WorkflowStatus.SecondSale, WorkflowStatus.Sale);\r\n    }\r\n\r\n    function setFirstSaleActive(bool val) public onlyOwner {\r\n        require(!saleActive, \"Cyborg86: Sale already running\");\r\n        require(!secondSaleActive, \"Cyborg86: Second sale already running\");\r\n        firstSaleActive = val;\r\n        workflow = WorkflowStatus.FirstSale;\r\n\r\n        emit WorkflowStatusChange(WorkflowStatus.Before, WorkflowStatus.FirstSale);\r\n    }\r\n\r\n    function setSecondSaleActive(bool val) public onlyOwner {\r\n        require(!firstSaleActive, \"Cyborg86: First sale still running\");\r\n        require(!saleActive, \"Cyborg86: Sale already running\");\r\n        secondSaleActive = val;\r\n        workflow = WorkflowStatus.SecondSale;\r\n\r\n        emit WorkflowStatusChange(WorkflowStatus.FirstSale, WorkflowStatus.SecondSale);\r\n    }\r\n\r\n    function addGiveawayWallet(address[] memory _a, uint[][] memory _ids) public onlyOwner {\r\n        require(_a.length == _ids.length, \"Cyborg86: Different parameters length\");\r\n\r\n        for(uint256 i; i \u003c _a.length; i++) {\r\n            GiveawayWallet memory wallet = GiveawayWallet(_a[i], true, _ids[i], false);\r\n            giveawayWallets.push(wallet);\r\n            for(uint256 j; j \u003c _ids[i].length; j++) {\r\n                reservedTokensGiveaway[_ids[i][j]] = true;\r\n            }\r\n        }\r\n    }\r\n\r\n    function removeAllGiveawayWallets() public onlyOwner {\r\n        for(uint256 i = 0; i \u003c giveawayWallets.length; i++) {\r\n            for(uint256 j = 0; j \u003c giveawayWallets[i].claimableIds.length; j++) {\r\n                delete reservedTokensGiveaway[giveawayWallets[i].claimableIds[j]];\r\n            }\r\n        }\r\n        delete giveawayWallets;\r\n    }\r\n\r\n    function addWalletsToFirstWhitelist(address[] memory _a) public onlyOwner {\r\n        for(uint256 i; i \u003c _a.length; i++){\r\n            whitelist1Wallets[_a[i]] = true;\r\n        }\r\n    }\r\n\r\n    function removeWalletsFromFirstWhitelist(address[] memory _a) public onlyOwner {\r\n        for(uint256 i; i \u003c _a.length; i++){\r\n            whitelist1Wallets[_a[i]] = false;\r\n        }\r\n    }\r\n\r\n    function addWalletsToSecondWhitelist(address[] memory _a) public onlyOwner {\r\n        for(uint256 i; i \u003c _a.length; i++){\r\n            whitelist2Wallets[_a[i]] = true;\r\n        }\r\n    }\r\n\r\n    function removeWalletsFromSecondWhitelist(address[] memory _a) public onlyOwner {\r\n        for(uint256 i; i \u003c _a.length; i++){\r\n            whitelist2Wallets[_a[i]] = false;\r\n        }\r\n    }\r\n\r\n    function setMaxPublicMint(uint newMax) external onlyOwner {\r\n        maxMintPublic = newMax;\r\n    }\r\n\r\n    function setMaxFirstMint(uint newMax) external onlyOwner {\r\n        maxMintFirst = newMax;\r\n    }\r\n\r\n    function setMaxSecondMint(uint newMax) external onlyOwner {\r\n        maxMintSecond = newMax;\r\n    }\r\n\r\n    function getAssetsByOwner(address _owner) public view returns(uint[] memory) {\r\n        uint[] memory result = new uint[](balanceOf(_owner));\r\n        uint counter = 0;\r\n\r\n        for (uint i = 1; i \u003c= nonce; i++) {\r\n            if (_exists(i)) {\r\n                if (ownerOf(i) == _owner) {\r\n                    result[counter] = i;\r\n                    counter++;\r\n                }\r\n            }\r\n        }\r\n        return result;\r\n    }\r\n\r\n    function getMyAssets() external view returns(uint[] memory){\r\n        return getAssetsByOwner(tx.origin);\r\n    }\r\n\r\n    function _baseURI() internal override view returns (string memory) {\r\n        return baseTokenURI;\r\n    }\r\n\r\n    function getCountGiveawayWallet() public view returns(uint) {\r\n       return giveawayWallets.length;\r\n    }\r\n\r\n    function getGiveawayWallet(address _a) public view returns(GiveawayWallet memory) {\r\n        GiveawayWallet memory wallet;\r\n        for (uint i = 0; i \u003c giveawayWallets.length; i++) {\r\n            if (giveawayWallets[i].recipient == _a) {\r\n                wallet = giveawayWallets[i];\r\n                break;\r\n            }\r\n        }\r\n\r\n        return wallet;\r\n    }\r\n\r\n    function setGiveawayWalletMinted(address _a) private {\r\n        for(uint i = 0; i \u003c giveawayWallets.length; i++){\r\n            if(giveawayWallets[i].recipient == _a) {\r\n                giveawayWallets[i].minted = true;\r\n            }\r\n        }\r\n    }\r\n\r\n    function giveaway() external nonReentrant {\r\n        GiveawayWallet memory wallet = getGiveawayWallet(msg.sender);\r\n        require(wallet.eligible, \"Cyborg86: Not eligible to giveaway\");\r\n        require(!wallet.minted, \"Cyborg86: Already claimed\");\r\n\r\n        for(uint i = 0; i \u003c wallet.claimableIds.length; i++){\r\n            if (!_exists(wallet.claimableIds[i])) {\r\n                _safeMint(msg.sender, wallet.claimableIds[i]);\r\n            }\r\n        }\r\n        setGiveawayWalletMinted(msg.sender);\r\n    }\r\n\r\n    function getSumQtyReservedTokens(uint qty) internal view returns(uint) {\r\n        uint count = 0;\r\n        for(uint i = 1; i + count \u003c= qty; i++) {\r\n            if (reservedTokensGiveaway[nonce+i]) {\r\n                count++;\r\n            }\r\n        }\r\n        return count + qty;\r\n    }\r\n\r\n    function buy(uint qty) external payable nonReentrant {\r\n        uint256 sumQtyReserved = getSumQtyReservedTokens(qty);\r\n        require(saleActive || firstSaleActive || secondSaleActive , \"TRANSACTION: No sale active\");\r\n        require(sumQtyReserved + nonce \u003c= totalSupply, \"SUPPLY: Value exceeds totalSupply\");\r\n\r\n        if (workflow == WorkflowStatus.FirstSale) {\r\n            _mintFirstSale(qty);\r\n        } else if (workflow == WorkflowStatus.SecondSale) {\r\n            _mintSecondSale(qty);\r\n        } else if (workflow == WorkflowStatus.Sale) {\r\n            require(saleActive, \"TRANSACTION: Sale is not active\");\r\n            require(msg.value == price * qty, \"PAYMENT: invalid value\");\r\n            require(mintPublicSale[msg.sender] + qty \u003c= maxMintPublic, \"PUBLIC SALE: Max 100 mint\");\r\n            mintPublicSale[msg.sender] += qty;\r\n\r\n            for(uint i = 0; i \u003c qty; i++){\r\n                nonce++;\r\n                while(reservedTokensGiveaway[nonce] || _exists(nonce)) {\r\n                    nonce++;\r\n                }\r\n                _safeMint(msg.sender, nonce);\r\n            }\r\n            emit Mint(msg.sender, qty);\r\n        }\r\n    }\r\n\r\n    function _mintFirstSale(uint qty) private {\r\n        require(msg.value == whitelistPrice * qty, \"PAYMENT: invalid value\");\r\n        require(whitelist1Wallets[msg.sender], \"FIRST SALE: Sender not allowed\");\r\n        require(mintWhitelist1[msg.sender] + qty \u003c= maxMintFirst, \"FIRST SALE: Max 10 mint\");\r\n        mintWhitelist1[msg.sender] += qty;\r\n\r\n        for(uint i = 0; i \u003c qty; i++){\r\n            nonce++;\r\n            while(reservedTokensGiveaway[nonce] || _exists(nonce)) {\r\n                nonce++;\r\n            }\r\n            _safeMint(msg.sender, nonce);\r\n        }\r\n        emit MintFirstSale(msg.sender, qty);\r\n    }\r\n\r\n    function _mintSecondSale(uint qty) private {\r\n        require(secondSaleActive, \"TRANSACTION: Second sale is not active\");\r\n        require(msg.value == whitelist2Price * qty, \"PAYMENT: invalid value\");\r\n        require(whitelist2Wallets[msg.sender], \"SECOND SALE: Sender not allowed\");\r\n        require(mintWhitelist2[msg.sender] + qty \u003c= maxMintSecond, \"SECOND SALE: Max 8 mint\");\r\n        mintWhitelist2[msg.sender] += qty;\r\n\r\n        for(uint i = 0; i \u003c qty; i++){\r\n            nonce++;\r\n            while(reservedTokensGiveaway[nonce] || _exists(nonce)) {\r\n                nonce++;\r\n            }\r\n            _safeMint(msg.sender, nonce);\r\n        }\r\n        emit MintSecondSale(msg.sender, qty);\r\n    }\r\n\r\n    /**\r\n    @dev Base URI setter\r\n     */\r\n    function _setBaseURI(string memory _newBaseURI) public onlyOwner {\r\n        baseTokenURI = _newBaseURI;\r\n    }\r\n\r\n    function _setUnrevealedURI(string memory _newUnrevealedURI) public onlyOwner {\r\n        unrevealedURI = _newUnrevealedURI;\r\n    }\r\n\r\n    function _setURISuffix(string memory _newUriSuffix) public onlyOwner {\r\n        uriSuffix = _newUriSuffix;\r\n    }\r\n\r\n    function setRevealed(bool isRevealed) external onlyOwner {\r\n        revealed = isRevealed;\r\n        if (isRevealed) {\r\n            emit WorkflowStatusChange(WorkflowStatus.SoldOut, WorkflowStatus.Reveal);\r\n        }\r\n    }\r\n\r\n    function tokenURI(uint256 tokenId) public view override(ERC721) returns (string memory) {\r\n        require(\r\n            _exists(tokenId),\r\n            \"ERC721Metadata: URI query for nonexistent token\"\r\n        );\r\n\r\n        if (revealed == false) {\r\n              return bytes(unrevealedURI).length \u003e 0\r\n                ? string(abi.encodePacked(unrevealedURI, tokenId.toString(), uriSuffix))\r\n                : \"\";\r\n        }\r\n\r\n        string memory base = _baseURI();\r\n        return\r\n            bytes(base).length \u003e 0\r\n                ? string(abi.encodePacked(base, tokenId.toString(), uriSuffix))\r\n                : \"\";\r\n    }\r\n}\r\n"},"ERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165).interfaceId;\n    }\n}"},"ERC721.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./IERC721Metadata.sol\";\nimport \"./Address.sol\";\nimport \"./Context.sol\";\nimport \"./Strings.sol\";\nimport \"./ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n    using Address for address;\n    using Strings for uint256;\n\n    // Token name\n    string private _name;\n\n    // Token symbol\n    string private _symbol;\n\n    // Mapping from token ID to owner address\n    mapping(uint256 =\u003e address) private _owners;\n\n    // Mapping owner address to token count\n    mapping(address =\u003e uint256) private _balances;\n\n    // Mapping from token ID to approved address\n    mapping(uint256 =\u003e address) private _tokenApprovals;\n\n    // Mapping from owner to operator approvals\n    mapping(address =\u003e mapping(address =\u003e bool)) private _operatorApprovals;\n\n    /**\n     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n     */\n    constructor(string memory name_, string memory symbol_) {\n        _name = name_;\n        _symbol = symbol_;\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n        return\n            interfaceId == type(IERC721).interfaceId ||\n            interfaceId == type(IERC721Metadata).interfaceId ||\n            super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev See {IERC721-balanceOf}.\n     */\n    function balanceOf(address owner) public view virtual override returns (uint256) {\n        require(owner != address(0), \"ERC721: balance query for the zero address\");\n        return _balances[owner];\n    }\n\n    /**\n     * @dev See {IERC721-ownerOf}.\n     */\n    function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n        address owner = _owners[tokenId];\n        require(owner != address(0), \"ERC721: owner query for nonexistent token\");\n        return owner;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-name}.\n     */\n    function name() public view virtual override returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-symbol}.\n     */\n    function symbol() public view virtual override returns (string memory) {\n        return _symbol;\n    }\n\n    /**\n     * @dev See {IERC721Metadata-tokenURI}.\n     */\n    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n        require(_exists(tokenId), \"ERC721Metadata: URI query for nonexistent token\");\n\n        string memory baseURI = _baseURI();\n        return bytes(baseURI).length \u003e 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n    }\n\n    /**\n     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n     * by default, can be overriden in child contracts.\n     */\n    function _baseURI() internal view virtual returns (string memory) {\n        return \"\";\n    }\n\n    /**\n     * @dev See {IERC721-approve}.\n     */\n    function approve(address to, uint256 tokenId) public virtual override {\n        address owner = ERC721.ownerOf(tokenId);\n        require(to != owner, \"ERC721: approval to current owner\");\n\n        require(\n            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n            \"ERC721: approve caller is not owner nor approved for all\"\n        );\n\n        _approve(to, tokenId);\n    }\n\n    /**\n     * @dev See {IERC721-getApproved}.\n     */\n    function getApproved(uint256 tokenId) public view virtual override returns (address) {\n        require(_exists(tokenId), \"ERC721: approved query for nonexistent token\");\n\n        return _tokenApprovals[tokenId];\n    }\n\n    /**\n     * @dev See {IERC721-setApprovalForAll}.\n     */\n    function setApprovalForAll(address operator, bool approved) public virtual override {\n        _setApprovalForAll(_msgSender(), operator, approved);\n    }\n\n    /**\n     * @dev See {IERC721-isApprovedForAll}.\n     */\n    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n        return _operatorApprovals[owner][operator];\n    }\n\n    /**\n     * @dev See {IERC721-transferFrom}.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public virtual override {\n        //solhint-disable-next-line max-line-length\n        require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n\n        _transfer(from, to, tokenId);\n    }\n\n    /**\n     * @dev See {IERC721-safeTransferFrom}.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) public virtual override {\n        safeTransferFrom(from, to, tokenId, \"\");\n    }\n\n    /**\n     * @dev See {IERC721-safeTransferFrom}.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) public virtual override {\n        require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n        _safeTransfer(from, to, tokenId, _data);\n    }\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * `_data` is additional data, it has no specified format and it is sent in call to `to`.\n     *\n     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n     * implement alternative mechanisms to perform token transfer, such as signature-based.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _safeTransfer(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) internal virtual {\n        _transfer(from, to, tokenId);\n        require(_checkOnERC721Received(from, to, tokenId, _data), \"ERC721: transfer to non ERC721Receiver implementer\");\n    }\n\n    /**\n     * @dev Returns whether `tokenId` exists.\n     *\n     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n     *\n     * Tokens start existing when they are minted (`_mint`),\n     * and stop existing when they are burned (`_burn`).\n     */\n    function _exists(uint256 tokenId) internal view virtual returns (bool) {\n        return _owners[tokenId] != address(0);\n    }\n\n    /**\n     * @dev Returns whether `spender` is allowed to manage `tokenId`.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n        require(_exists(tokenId), \"ERC721: operator query for nonexistent token\");\n        address owner = ERC721.ownerOf(tokenId);\n        return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));\n    }\n\n    /**\n     * @dev Safely mints `tokenId` and transfers it to `to`.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must not exist.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _safeMint(address to, uint256 tokenId) internal virtual {\n        _safeMint(to, tokenId, \"\");\n    }\n\n    /**\n     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n     */\n    function _safeMint(\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) internal virtual {\n        _mint(to, tokenId);\n        require(\n            _checkOnERC721Received(address(0), to, tokenId, _data),\n            \"ERC721: transfer to non ERC721Receiver implementer\"\n        );\n    }\n\n    /**\n     * @dev Mints `tokenId` and transfers it to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n     *\n     * Requirements:\n     *\n     * - `tokenId` must not exist.\n     * - `to` cannot be the zero address.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _mint(address to, uint256 tokenId) internal virtual {\n        require(to != address(0), \"ERC721: mint to the zero address\");\n        require(!_exists(tokenId), \"ERC721: token already minted\");\n\n        _beforeTokenTransfer(address(0), to, tokenId);\n\n        _balances[to] += 1;\n        _owners[tokenId] = to;\n\n        emit Transfer(address(0), to, tokenId);\n\n        _afterTokenTransfer(address(0), to, tokenId);\n    }\n\n    /**\n     * @dev Destroys `tokenId`.\n     * The approval is cleared when the token is burned.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _burn(uint256 tokenId) internal virtual {\n        address owner = ERC721.ownerOf(tokenId);\n\n        _beforeTokenTransfer(owner, address(0), tokenId);\n\n        // Clear approvals\n        _approve(address(0), tokenId);\n\n        _balances[owner] -= 1;\n        delete _owners[tokenId];\n\n        emit Transfer(owner, address(0), tokenId);\n\n        _afterTokenTransfer(owner, address(0), tokenId);\n    }\n\n    /**\n     * @dev Transfers `tokenId` from `from` to `to`.\n     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     *\n     * Emits a {Transfer} event.\n     */\n    function _transfer(\n        address from,\n        address to,\n        uint256 tokenId\n    ) internal virtual {\n        require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n        require(to != address(0), \"ERC721: transfer to the zero address\");\n\n        _beforeTokenTransfer(from, to, tokenId);\n\n        // Clear approvals from the previous owner\n        _approve(address(0), tokenId);\n\n        _balances[from] -= 1;\n        _balances[to] += 1;\n        _owners[tokenId] = to;\n\n        emit Transfer(from, to, tokenId);\n\n        _afterTokenTransfer(from, to, tokenId);\n    }\n\n    /**\n     * @dev Approve `to` to operate on `tokenId`\n     *\n     * Emits a {Approval} event.\n     */\n    function _approve(address to, uint256 tokenId) internal virtual {\n        _tokenApprovals[tokenId] = to;\n        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n    }\n\n    /**\n     * @dev Approve `operator` to operate on all of `owner` tokens\n     *\n     * Emits a {ApprovalForAll} event.\n     */\n    function _setApprovalForAll(\n        address owner,\n        address operator,\n        bool approved\n    ) internal virtual {\n        require(owner != operator, \"ERC721: approve to caller\");\n        _operatorApprovals[owner][operator] = approved;\n        emit ApprovalForAll(owner, operator, approved);\n    }\n\n    /**\n     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n     * The call is not executed if the target address is not a contract.\n     *\n     * @param from address representing the previous owner of the given token ID\n     * @param to target address that will receive the tokens\n     * @param tokenId uint256 ID of the token to be transferred\n     * @param _data bytes optional data to send along with the call\n     * @return bool whether the call correctly returned the expected magic value\n     */\n    function _checkOnERC721Received(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes memory _data\n    ) private returns (bool) {\n        if (to.isContract()) {\n            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {\n                return retval == IERC721Receiver.onERC721Received.selector;\n            } catch (bytes memory reason) {\n                if (reason.length == 0) {\n                    revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n                } else {\n                    assembly {\n                        revert(add(32, reason), mload(reason))\n                    }\n                }\n            }\n        } else {\n            return true;\n        }\n    }\n\n    /**\n     * @dev Hook that is called before any token transfer. This includes minting\n     * and burning.\n     *\n     * Calling conditions:\n     *\n     * - When `from` and `to` are both non-zero, ``from``\u0027s `tokenId` will be\n     * transferred to `to`.\n     * - When `from` is zero, `tokenId` will be minted for `to`.\n     * - When `to` is zero, ``from``\u0027s `tokenId` will be burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _beforeTokenTransfer(\n        address from,\n        address to,\n        uint256 tokenId\n    ) internal virtual {}\n\n    /**\n     * @dev Hook that is called after any transfer of tokens. This includes\n     * minting and burning.\n     *\n     * Calling conditions:\n     *\n     * - when `from` and `to` are both non-zero.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _afterTokenTransfer(\n        address from,\n        address to,\n        uint256 tokenId\n    ) internal virtual {}\n}"},"IERC165.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}"},"IERC20.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller\u0027s account to `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller\u0027s tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender\u0027s allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\n     * allowance mechanism. `amount` is then deducted from the caller\u0027s\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address sender,\n        address recipient,\n        uint256 amount\n    ) external returns (bool);\n\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}"},"IERC721.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n    /**\n     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n     */\n    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n    /**\n     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n     */\n    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n    /**\n     * @dev Returns the number of tokens in ``owner``\u0027s account.\n     */\n    function balanceOf(address owner) external view returns (uint256 balance);\n\n    /**\n     * @dev Returns the owner of the `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function ownerOf(uint256 tokenId) external view returns (address owner);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n     * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Transfers `tokenId` token from `from` to `to`.\n     *\n     * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address from,\n        address to,\n        uint256 tokenId\n    ) external;\n\n    /**\n     * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n     * The approval is cleared when the token is transferred.\n     *\n     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n     *\n     * Requirements:\n     *\n     * - The caller must own the token or be an approved operator.\n     * - `tokenId` must exist.\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address to, uint256 tokenId) external;\n\n    /**\n     * @dev Returns the account approved for `tokenId` token.\n     *\n     * Requirements:\n     *\n     * - `tokenId` must exist.\n     */\n    function getApproved(uint256 tokenId) external view returns (address operator);\n\n    /**\n     * @dev Approve or remove `operator` as an operator for the caller.\n     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n     *\n     * Requirements:\n     *\n     * - The `operator` cannot be the caller.\n     *\n     * Emits an {ApprovalForAll} event.\n     */\n    function setApprovalForAll(address operator, bool _approved) external;\n\n    /**\n     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n     *\n     * See {setApprovalForAll}\n     */\n    function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n    /**\n     * @dev Safely transfers `tokenId` token from `from` to `to`.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `tokenId` token must exist and be owned by `from`.\n     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n     *\n     * Emits a {Transfer} event.\n     */\n    function safeTransferFrom(\n        address from,\n        address to,\n        uint256 tokenId,\n        bytes calldata data\n    ) external;\n}"},"IERC721Metadata.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n    /**\n     * @dev Returns the token collection name.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the token collection symbol.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n     */\n    function tokenURI(uint256 tokenId) external view returns (string memory);\n}"},"IERC721Receiver.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n    /**\n     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n     * by `operator` from `from`, this function is called.\n     *\n     * It must return its Solidity selector to confirm the token transfer.\n     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n     *\n     * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.\n     */\n    function onERC721Received(\n        address operator,\n        address from,\n        uint256 tokenId,\n        bytes calldata data\n    ) external returns (bytes4);\n}"},"Ownable.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}"},"PaymentSplitter.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (finance/PaymentSplitter.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./SafeERC20.sol\";\nimport \"./Address.sol\";\nimport \"./Context.sol\";\n\n/**\n * @title PaymentSplitter\n * @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware\n * that the Ether will be split in this way, since it is handled transparently by the contract.\n *\n * The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each\n * account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim\n * an amount proportional to the percentage of total shares they were assigned.\n *\n * `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the\n * accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release}\n * function.\n *\n * NOTE: This contract assumes that ERC20 tokens will behave similarly to native tokens (Ether). Rebasing tokens, and\n * tokens that apply fees during transfers, are likely to not be supported as expected. If in doubt, we encourage you\n * to run tests before sending real value to this contract.\n */\ncontract PaymentSplitter is Context {\n    event PayeeAdded(address account, uint256 shares);\n    event PaymentReleased(address to, uint256 amount);\n    event ERC20PaymentReleased(IERC20 indexed token, address to, uint256 amount);\n    event PaymentReceived(address from, uint256 amount);\n\n    uint256 private _totalShares;\n    uint256 private _totalReleased;\n\n    mapping(address =\u003e uint256) private _shares;\n    mapping(address =\u003e uint256) private _released;\n    address[] private _payees;\n\n    mapping(IERC20 =\u003e uint256) private _erc20TotalReleased;\n    mapping(IERC20 =\u003e mapping(address =\u003e uint256)) private _erc20Released;\n\n    /**\n     * @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at\n     * the matching position in the `shares` array.\n     *\n     * All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no\n     * duplicates in `payees`.\n     */\n    constructor(address[] memory payees, uint256[] memory shares_) payable {\n        require(payees.length == shares_.length, \"PaymentSplitter: payees and shares length mismatch\");\n        require(payees.length \u003e 0, \"PaymentSplitter: no payees\");\n\n        for (uint256 i = 0; i \u003c payees.length; i++) {\n            _addPayee(payees[i], shares_[i]);\n        }\n    }\n\n    /**\n     * @dev The Ether received will be logged with {PaymentReceived} events. Note that these events are not fully\n     * reliable: it\u0027s possible for a contract to receive Ether without triggering this function. This only affects the\n     * reliability of the events, and not the actual splitting of Ether.\n     *\n     * To learn more about this see the Solidity documentation for\n     * https://solidity.readthedocs.io/en/latest/contracts.html#fallback-function[fallback\n     * functions].\n     */\n    receive() external payable virtual {\n        emit PaymentReceived(_msgSender(), msg.value);\n    }\n\n    /**\n     * @dev Getter for the total shares held by payees.\n     */\n    function totalShares() public view returns (uint256) {\n        return _totalShares;\n    }\n\n    /**\n     * @dev Getter for the total amount of Ether already released.\n     */\n    function totalReleased() public view returns (uint256) {\n        return _totalReleased;\n    }\n\n    /**\n     * @dev Getter for the total amount of `token` already released. `token` should be the address of an IERC20\n     * contract.\n     */\n    function totalReleased(IERC20 token) public view returns (uint256) {\n        return _erc20TotalReleased[token];\n    }\n\n    /**\n     * @dev Getter for the amount of shares held by an account.\n     */\n    function shares(address account) public view returns (uint256) {\n        return _shares[account];\n    }\n\n    /**\n     * @dev Getter for the amount of Ether already released to a payee.\n     */\n    function released(address account) public view returns (uint256) {\n        return _released[account];\n    }\n\n    /**\n     * @dev Getter for the amount of `token` tokens already released to a payee. `token` should be the address of an\n     * IERC20 contract.\n     */\n    function released(IERC20 token, address account) public view returns (uint256) {\n        return _erc20Released[token][account];\n    }\n\n    /**\n     * @dev Getter for the address of the payee number `index`.\n     */\n    function payee(uint256 index) public view returns (address) {\n        return _payees[index];\n    }\n\n    /**\n     * @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the\n     * total shares and their previous withdrawals.\n     */\n    function release(address payable account) public virtual {\n        require(_shares[account] \u003e 0, \"PaymentSplitter: account has no shares\");\n\n        uint256 totalReceived = address(this).balance + totalReleased();\n        uint256 payment = _pendingPayment(account, totalReceived, released(account));\n\n        require(payment != 0, \"PaymentSplitter: account is not due payment\");\n\n        _released[account] += payment;\n        _totalReleased += payment;\n\n        Address.sendValue(account, payment);\n        emit PaymentReleased(account, payment);\n    }\n\n    /**\n     * @dev Triggers a transfer to `account` of the amount of `token` tokens they are owed, according to their\n     * percentage of the total shares and their previous withdrawals. `token` must be the address of an IERC20\n     * contract.\n     */\n    function release(IERC20 token, address account) public virtual {\n        require(_shares[account] \u003e 0, \"PaymentSplitter: account has no shares\");\n\n        uint256 totalReceived = token.balanceOf(address(this)) + totalReleased(token);\n        uint256 payment = _pendingPayment(account, totalReceived, released(token, account));\n\n        require(payment != 0, \"PaymentSplitter: account is not due payment\");\n\n        _erc20Released[token][account] += payment;\n        _erc20TotalReleased[token] += payment;\n\n        SafeERC20.safeTransfer(token, account, payment);\n        emit ERC20PaymentReleased(token, account, payment);\n    }\n\n    /**\n     * @dev internal logic for computing the pending payment of an `account` given the token historical balances and\n     * already released amounts.\n     */\n    function _pendingPayment(\n        address account,\n        uint256 totalReceived,\n        uint256 alreadyReleased\n    ) private view returns (uint256) {\n        return (totalReceived * _shares[account]) / _totalShares - alreadyReleased;\n    }\n\n    /**\n     * @dev Add a new payee to the contract.\n     * @param account The address of the payee to add.\n     * @param shares_ The number of shares owned by the payee.\n     */\n    function _addPayee(address account, uint256 shares_) private {\n        require(account != address(0), \"PaymentSplitter: account is the zero address\");\n        require(shares_ \u003e 0, \"PaymentSplitter: shares are 0\");\n        require(_shares[account] == 0, \"PaymentSplitter: account already has shares\");\n\n        _payees.push(account);\n        _shares[account] = shares_;\n        _totalShares = _totalShares + shares_;\n        emit PayeeAdded(account, shares_);\n    }\n}"},"ReentrancyGuard.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuard {\n    // Booleans are more expensive than uint256 or any type that takes up a full\n    // word because each write operation emits an extra SLOAD to first read the\n    // slot\u0027s contents, replace the bits taken up by the boolean, and then write\n    // back. This is the compiler\u0027s defense against contract upgrades and\n    // pointer aliasing, and it cannot be disabled.\n\n    // The values being non-zero value makes deployment a bit more expensive,\n    // but in exchange the refund on every call to nonReentrant will be lower in\n    // amount. Since refunds are capped to a percentage of the total\n    // transaction\u0027s gas, it is best to keep them low in cases like this one, to\n    // increase the likelihood of the full refund coming into effect.\n    uint256 private constant _NOT_ENTERED = 1;\n    uint256 private constant _ENTERED = 2;\n\n    uint256 private _status;\n\n    constructor() {\n        _status = _NOT_ENTERED;\n    }\n\n    /**\n     * @dev Prevents a contract from calling itself, directly or indirectly.\n     * Calling a `nonReentrant` function from another `nonReentrant`\n     * function is not supported. It is possible to prevent this from happening\n     * by making the `nonReentrant` function external, and making it call a\n     * `private` function that does the actual work.\n     */\n    modifier nonReentrant() {\n        // On the first call to nonReentrant, _notEntered will be true\n        require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n        // Any calls to nonReentrant after this point will fail\n        _status = _ENTERED;\n\n        _;\n\n        // By storing the original value once again, a refund is triggered (see\n        // https://eips.ethereum.org/EIPS/eip-2200)\n        _status = _NOT_ENTERED;\n    }\n}"},"SafeERC20.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // \u0027safeIncreaseAllowance\u0027 and \u0027safeDecreaseAllowance\u0027\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance \u003e= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity\u0027s return data size checking mechanism, since\n        // we\u0027re implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        if (returndata.length \u003e 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}"},"Strings.sol":{"content":"// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        // Inspired by OraclizeAPI\u0027s implementation - MIT licence\n        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n        if (value == 0) {\n            return \"0\";\n        }\n        uint256 temp = value;\n        uint256 digits;\n        while (temp != 0) {\n            digits++;\n            temp /= 10;\n        }\n        bytes memory buffer = new bytes(digits);\n        while (value != 0) {\n            digits -= 1;\n            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n            value /= 10;\n        }\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        if (value == 0) {\n            return \"0x00\";\n        }\n        uint256 temp = value;\n        uint256 length = 0;\n        while (temp != 0) {\n            length++;\n            temp \u003e\u003e= 8;\n        }\n        return toHexString(value, length);\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i \u003e 1; --i) {\n            buffer[i] = _HEX_SYMBOLS[value \u0026 0xf];\n            value \u003e\u003e= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n}"}}