ERC-721
Overview
Max Total Supply
1,726 ABXPACE
Holders
686
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 ABXPACELoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
GenArt721CoreV2_ArtBlocksXPace
Compiler Version
v0.8.9+commit.e5eed63a
Optimization Enabled:
Yes with 100 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: LGPL-3.0-only // Created By: Art Blocks Inc. import "../../interfaces/0.8.x/IRandomizer.sol"; import "../../interfaces/0.8.x/IGenArt721CoreV2_PBAB.sol"; import "../../interfaces/0.8.x/IGenArt721CoreContractV1.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; pragma solidity 0.8.9; /** * @title Art Blocks Partnership ERC-721 core contract. * @author Art Blocks Inc. * @dev conforms to V1 and V2_PBAB interfaces */ contract GenArt721CoreV2_ArtBlocksXPace is ERC721Enumerable, IGenArt721CoreV2_PBAB, IGenArt721CoreContractV1 { /// randomizer contract IRandomizer public randomizerContract; struct Project { string name; string artist; string description; string website; string license; string projectBaseURI; uint256 invocations; uint256 maxInvocations; string scriptJSON; mapping(uint256 => string) scripts; uint256 scriptCount; string ipfsHash; bool active; bool locked; bool paused; } uint256 constant ONE_MILLION = 1_000_000; mapping(uint256 => Project) projects; //All financial functions are stripped from struct for visibility mapping(uint256 => address payable) public override( IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB ) projectIdToArtistAddress; mapping(uint256 => string) public projectIdToCurrencySymbol; mapping(uint256 => address) public projectIdToCurrencyAddress; mapping(uint256 => uint256) public projectIdToPricePerTokenInWei; mapping(uint256 => address payable) public override( IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB ) projectIdToAdditionalPayee; mapping(uint256 => uint256) public override( IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB ) projectIdToAdditionalPayeePercentage; mapping(uint256 => uint256) public projectIdToSecondaryMarketRoyaltyPercentage; address payable public renderProviderAddress; /// Percentage of mint revenue allocated to render provider uint256 public renderProviderPercentage = 10; mapping(uint256 => uint256) public override( IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB ) tokenIdToProjectId; mapping(uint256 => bytes32) public tokenIdToHash; mapping(bytes32 => uint256) public hashToTokenId; /// admin for contract address public override(IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB) admin; /// true if address is whitelisted mapping(address => bool) public override(IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB) isWhitelisted; /// true if minter is whitelisted mapping(address => bool) public isMintWhitelisted; /// next project ID to be created uint256 public override( IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB ) nextProjectId = 0; modifier onlyValidTokenId(uint256 _tokenId) { require(_exists(_tokenId), "Token ID does not exist"); _; } modifier onlyUnlocked(uint256 _projectId) { require(!projects[_projectId].locked, "Only if unlocked"); _; } modifier onlyArtist(uint256 _projectId) { require( msg.sender == projectIdToArtistAddress[_projectId], "Only artist" ); _; } modifier onlyAdmin() { require(msg.sender == admin, "Only admin"); _; } modifier onlyWhitelisted() { require(isWhitelisted[msg.sender], "Only whitelisted"); _; } modifier onlyArtistOrWhitelisted(uint256 _projectId) { require( isWhitelisted[msg.sender] || msg.sender == projectIdToArtistAddress[_projectId], "Only artist or whitelisted" ); _; } /** * @notice Initializes contract. * @param _tokenName Name of token. * @param _tokenSymbol Token symbol. * @param _randomizerContract Randomizer contract. */ constructor( string memory _tokenName, string memory _tokenSymbol, address _randomizerContract ) ERC721(_tokenName, _tokenSymbol) { admin = msg.sender; isWhitelisted[msg.sender] = true; renderProviderAddress = payable(msg.sender); randomizerContract = IRandomizer(_randomizerContract); } /** * @notice Mints a token from project `_projectId` and sets the * token's owner to `_to`. * @param _to Address to be the minted token's owner. * @param _projectId Project ID to mint a token on. * @param _by Purchaser of minted token. * @dev sender must be a whitelisted minter */ function mint( address _to, uint256 _projectId, address _by ) external override(IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB) returns (uint256 _tokenId) { require( isMintWhitelisted[msg.sender], "Must mint from whitelisted minter contract." ); require( projects[_projectId].invocations + 1 <= projects[_projectId].maxInvocations, "Must not exceed max invocations" ); require( projects[_projectId].active || _by == projectIdToArtistAddress[_projectId], "Project must exist and be active" ); require( !projects[_projectId].paused || _by == projectIdToArtistAddress[_projectId], "Purchases are paused." ); uint256 tokenId = _mintToken(_to, _projectId); return tokenId; } function _mintToken(address _to, uint256 _projectId) internal returns (uint256 _tokenId) { uint256 tokenIdToBe = (_projectId * ONE_MILLION) + projects[_projectId].invocations; projects[_projectId].invocations = projects[_projectId].invocations + 1; bytes32 hash = keccak256( abi.encodePacked( projects[_projectId].invocations, block.number, blockhash(block.number - 1), randomizerContract.returnValue() ) ); tokenIdToHash[tokenIdToBe] = hash; hashToTokenId[hash] = tokenIdToBe; _mint(_to, tokenIdToBe); tokenIdToProjectId[tokenIdToBe] = _projectId; emit Mint(_to, tokenIdToBe, _projectId); return tokenIdToBe; } /** * @notice Updates contract admin to `_adminAddress`. */ function updateAdmin(address _adminAddress) public onlyAdmin { admin = _adminAddress; } /** * @notice Updates render provider address to `_renderProviderAddress`. */ function updateRenderProviderAddress(address payable _renderProviderAddress) public onlyAdmin { renderProviderAddress = _renderProviderAddress; } /** * @notice Updates render provider mint revenue percentage to * `_renderProviderPercentage`. */ function updateRenderProviderPercentage(uint256 _renderProviderPercentage) public onlyAdmin { require(_renderProviderPercentage <= 25, "Max of 25%"); renderProviderPercentage = _renderProviderPercentage; } /** * @notice Whitelists `_address`. */ function addWhitelisted(address _address) public onlyAdmin { isWhitelisted[_address] = true; } /** * @notice Revokes whitelisting of `_address`. */ function removeWhitelisted(address _address) public onlyAdmin { isWhitelisted[_address] = false; } /** * @notice Whitelists minter `_address`. */ function addMintWhitelisted(address _address) public onlyAdmin { isMintWhitelisted[_address] = true; } /** * @notice Revokes whitelisting of minter `_address`. */ function removeMintWhitelisted(address _address) public onlyAdmin { isMintWhitelisted[_address] = false; } /** * @notice Updates randomizer to `_randomizerAddress`. */ function updateRandomizerAddress(address _randomizerAddress) public onlyWhitelisted { randomizerContract = IRandomizer(_randomizerAddress); } /** * @notice Locks project `_projectId`. */ function toggleProjectIsLocked(uint256 _projectId) public onlyWhitelisted onlyUnlocked(_projectId) { projects[_projectId].locked = true; } /** * @notice Toggles project `_projectId` as active/inactive. */ function toggleProjectIsActive(uint256 _projectId) public onlyWhitelisted { projects[_projectId].active = !projects[_projectId].active; } /** * @notice Updates artist of project `_projectId` to `_artistAddress`. */ function updateProjectArtistAddress( uint256 _projectId, address payable _artistAddress ) public onlyArtistOrWhitelisted(_projectId) { projectIdToArtistAddress[_projectId] = _artistAddress; } /** * @notice Toggles paused state of project `_projectId`. */ function toggleProjectIsPaused(uint256 _projectId) public onlyArtist(_projectId) { projects[_projectId].paused = !projects[_projectId].paused; } /** * @notice Adds new project `_projectName` by `_artistAddress`. * @param _projectName Project name. * @param _artistAddress Artist's address. * @param _pricePerTokenInWei Price to mint a token, in Wei. */ function addProject( string memory _projectName, address payable _artistAddress, uint256 _pricePerTokenInWei ) public onlyWhitelisted { uint256 projectId = nextProjectId; projectIdToArtistAddress[projectId] = _artistAddress; projects[projectId].name = _projectName; projectIdToCurrencySymbol[projectId] = "ETH"; projectIdToPricePerTokenInWei[projectId] = _pricePerTokenInWei; projects[projectId].paused = true; projects[projectId].maxInvocations = ONE_MILLION; nextProjectId = nextProjectId + 1; } /** * @notice Updates payment currency of project `_projectId` to be * `_currencySymbol`. * @param _projectId Project ID to update. * @param _currencySymbol Currency symbol. * @param _currencyAddress Currency address. */ function updateProjectCurrencyInfo( uint256 _projectId, string memory _currencySymbol, address _currencyAddress ) public onlyArtist(_projectId) { projectIdToCurrencySymbol[_projectId] = _currencySymbol; projectIdToCurrencyAddress[_projectId] = _currencyAddress; } /** * @notice Updates price per token of project `_projectId` to be * '_pricePerTokenInWei`, in Wei. */ function updateProjectPricePerTokenInWei( uint256 _projectId, uint256 _pricePerTokenInWei ) public onlyArtist(_projectId) { projectIdToPricePerTokenInWei[_projectId] = _pricePerTokenInWei; } /** * @notice Updates name of project `_projectId` to be `_projectName`. */ function updateProjectName(uint256 _projectId, string memory _projectName) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { projects[_projectId].name = _projectName; } /** * @notice Updates artist name for project `_projectId` to be * `_projectArtistName`. */ function updateProjectArtistName( uint256 _projectId, string memory _projectArtistName ) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { projects[_projectId].artist = _projectArtistName; } /** * @notice Updates additional payee for project `_projectId` to be * `_additionalPayee`, receiving `_additionalPayeePercentage` percent * of artist mint and royalty revenues. */ function updateProjectAdditionalPayeeInfo( uint256 _projectId, address payable _additionalPayee, uint256 _additionalPayeePercentage ) public onlyArtist(_projectId) { require(_additionalPayeePercentage <= 100, "Max of 100%"); projectIdToAdditionalPayee[_projectId] = _additionalPayee; projectIdToAdditionalPayeePercentage[ _projectId ] = _additionalPayeePercentage; } /** * @notice Updates artist secondary market royalties for project * `_projectId` to be `_secondMarketRoyalty` percent. */ function updateProjectSecondaryMarketRoyaltyPercentage( uint256 _projectId, uint256 _secondMarketRoyalty ) public onlyArtist(_projectId) { require(_secondMarketRoyalty <= 100, "Max of 100%"); projectIdToSecondaryMarketRoyaltyPercentage[ _projectId ] = _secondMarketRoyalty; } /** * @notice Updates description of project `_projectId`. */ function updateProjectDescription( uint256 _projectId, string memory _projectDescription ) public onlyArtist(_projectId) { projects[_projectId].description = _projectDescription; } /** * @notice Updates website of project `_projectId` to be `_projectWebsite`. */ function updateProjectWebsite( uint256 _projectId, string memory _projectWebsite ) public onlyArtist(_projectId) { projects[_projectId].website = _projectWebsite; } /** * @notice Updates license for project `_projectId`. */ function updateProjectLicense( uint256 _projectId, string memory _projectLicense ) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { projects[_projectId].license = _projectLicense; } /** * @notice Updates maximum invocations for project `_projectId` to * `_maxInvocations`. */ function updateProjectMaxInvocations( uint256 _projectId, uint256 _maxInvocations ) public onlyArtist(_projectId) { require( (!projects[_projectId].locked || _maxInvocations < projects[_projectId].maxInvocations), "Only if unlocked" ); require( _maxInvocations > projects[_projectId].invocations, "You must set max invocations greater than current invocations" ); require(_maxInvocations <= ONE_MILLION, "Cannot exceed 1000000"); projects[_projectId].maxInvocations = _maxInvocations; } /** * @notice Adds a script to project `_projectId`. * @param _projectId Project to be updated. * @param _script Script to be added. */ function addProjectScript(uint256 _projectId, string memory _script) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { projects[_projectId].scripts[ projects[_projectId].scriptCount ] = _script; projects[_projectId].scriptCount = projects[_projectId].scriptCount + 1; } /** * @notice Updates script for project `_projectId` at script ID `_scriptId`. * @param _projectId Project to be updated. * @param _scriptId Script ID to be updated. * @param _script Script to be added. */ function updateProjectScript( uint256 _projectId, uint256 _scriptId, string memory _script ) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { require( _scriptId < projects[_projectId].scriptCount, "scriptId out of range" ); projects[_projectId].scripts[_scriptId] = _script; } /** * @notice Removes last script from project `_projectId`. */ function removeProjectLastScript(uint256 _projectId) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { require( projects[_projectId].scriptCount > 0, "there are no scripts to remove" ); delete projects[_projectId].scripts[ projects[_projectId].scriptCount - 1 ]; projects[_projectId].scriptCount = projects[_projectId].scriptCount - 1; } /** * @notice Updates script json for project `_projectId`. */ function updateProjectScriptJSON( uint256 _projectId, string memory _projectScriptJSON ) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { projects[_projectId].scriptJSON = _projectScriptJSON; } /** * @notice Updates ipfs hash for project `_projectId`. */ function updateProjectIpfsHash(uint256 _projectId, string memory _ipfsHash) public onlyUnlocked(_projectId) onlyArtistOrWhitelisted(_projectId) { projects[_projectId].ipfsHash = _ipfsHash; } /** * @notice Updates base URI for project `_projectId` to `_newBaseURI`. */ function updateProjectBaseURI(uint256 _projectId, string memory _newBaseURI) public onlyArtist(_projectId) { projects[_projectId].projectBaseURI = _newBaseURI; } /** * @notice Returns project details for project `_projectId`. * @param _projectId Project to be queried. * @return projectName Name of project * @return artist Artist of project * @return description Project description * @return website Project website * @return license Project license */ function projectDetails(uint256 _projectId) public view returns ( string memory projectName, string memory artist, string memory description, string memory website, string memory license ) { projectName = projects[_projectId].name; artist = projects[_projectId].artist; description = projects[_projectId].description; website = projects[_projectId].website; license = projects[_projectId].license; } /** * @notice Returns project token information for project `_projectId`. * @param _projectId Project to be queried. * @return artistAddress Project Artist's address * @return pricePerTokenInWei Price to mint a token, in Wei * @return invocations Current number of invocations * @return maxInvocations Maximum allowed invocations * @return active Boolean representing if project is currently active * @return additionalPayee Additional payee address * @return additionalPayeePercentage Percentage of artist revenue * to be sent to the additional payee's address * @return currency Symbol of project's currency * @return currencyAddress Address of project's currency */ function projectTokenInfo(uint256 _projectId) public view override(IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB) returns ( address artistAddress, uint256 pricePerTokenInWei, uint256 invocations, uint256 maxInvocations, bool active, address additionalPayee, uint256 additionalPayeePercentage, string memory currency, address currencyAddress ) { artistAddress = projectIdToArtistAddress[_projectId]; pricePerTokenInWei = projectIdToPricePerTokenInWei[_projectId]; invocations = projects[_projectId].invocations; maxInvocations = projects[_projectId].maxInvocations; active = projects[_projectId].active; additionalPayee = projectIdToAdditionalPayee[_projectId]; additionalPayeePercentage = projectIdToAdditionalPayeePercentage[ _projectId ]; currency = projectIdToCurrencySymbol[_projectId]; currencyAddress = projectIdToCurrencyAddress[_projectId]; } /** * @notice Returns script information for project `_projectId`. * @param _projectId Project to be queried. * @return scriptJSON Project's script json * @return scriptCount Count of scripts for project * @return ipfsHash IPFS hash for project * @return locked Boolean representing if project is locked * @return paused Boolean representing if project is paused */ function projectScriptInfo(uint256 _projectId) public view returns ( string memory scriptJSON, uint256 scriptCount, string memory ipfsHash, bool locked, bool paused ) { scriptJSON = projects[_projectId].scriptJSON; scriptCount = projects[_projectId].scriptCount; ipfsHash = projects[_projectId].ipfsHash; locked = projects[_projectId].locked; paused = projects[_projectId].paused; } /** * @notice Returns script for project `_projectId` at script index `_index`. */ function projectScriptByIndex(uint256 _projectId, uint256 _index) public view returns (string memory) { return projects[_projectId].scripts[_index]; } /** * @notice Returns base URI for project `_projectId`. */ function projectURIInfo(uint256 _projectId) public view returns (string memory projectBaseURI) { projectBaseURI = projects[_projectId].projectBaseURI; } /** * @notice Returns Art Blocks payment address. * @dev shim to conform to `IGenArt721CoreContractV1` */ function artblocksAddress() external view returns (address payable) { return renderProviderAddress; } /** * @notice Returns percentage of mint revenue allocated to Art Blocks. * @dev shim to conform to `IGenArt721CoreContractV1` */ function artblocksPercentage() external view returns (uint256) { return renderProviderPercentage; } /** * @notice Gets royalty data for token ID `_tokenId`. * @param _tokenId Token ID to be queried. * @return artistAddress Artist's payment address * @return additionalPayee Additional payee's payment address * @return additionalPayeePercentage Percentage of artist revenue * to be sent to the additional payee's address * @return royaltyFeeByID Total royalty percentage to be sent to * combination of artist and additional payee */ function getRoyaltyData(uint256 _tokenId) public view override(IGenArt721CoreContractV1, IGenArt721CoreV2_PBAB) returns ( address artistAddress, address additionalPayee, uint256 additionalPayeePercentage, uint256 royaltyFeeByID ) { artistAddress = projectIdToArtistAddress[tokenIdToProjectId[_tokenId]]; additionalPayee = projectIdToAdditionalPayee[ tokenIdToProjectId[_tokenId] ]; additionalPayeePercentage = projectIdToAdditionalPayeePercentage[ tokenIdToProjectId[_tokenId] ]; royaltyFeeByID = projectIdToSecondaryMarketRoyaltyPercentage[ tokenIdToProjectId[_tokenId] ]; } /** * @notice Gets token URI for token ID `_tokenId`. */ function tokenURI(uint256 _tokenId) public view override onlyValidTokenId(_tokenId) returns (string memory) { return string( abi.encodePacked( projects[tokenIdToProjectId[_tokenId]].projectBaseURI, Strings.toString(_tokenId) ) ); } }
// SPDX-License-Identifier: LGPL-3.0-only // Creatd By: Art Blocks Inc. pragma solidity ^0.8.0; interface IRandomizer { function returnValue() external view returns (bytes32); }
// SPDX-License-Identifier: LGPL-3.0-only // Created By: Art Blocks Inc. pragma solidity ^0.8.0; interface IGenArt721CoreV2_PBAB { /** * @notice Token ID `_tokenId` minted on project ID `_projectId` to `_to`. */ event Mint( address indexed _to, uint256 indexed _tokenId, uint256 indexed _projectId ); // getter function of public variable function admin() external view returns (address); // getter function of public variable function nextProjectId() external view returns (uint256); // getter function of public mapping function tokenIdToProjectId(uint256 tokenId) external view returns (uint256 projectId); function isWhitelisted(address sender) external view returns (bool); function projectIdToCurrencySymbol(uint256 _projectId) external view returns (string memory); function projectIdToCurrencyAddress(uint256 _projectId) external view returns (address); function projectIdToArtistAddress(uint256 _projectId) external view returns (address payable); function projectIdToPricePerTokenInWei(uint256 _projectId) external view returns (uint256); function projectIdToAdditionalPayee(uint256 _projectId) external view returns (address payable); function projectIdToAdditionalPayeePercentage(uint256 _projectId) external view returns (uint256); function projectTokenInfo(uint256 _projectId) external view returns ( address, uint256, uint256, uint256, bool, address, uint256, string memory, address ); function renderProviderAddress() external view returns (address payable); function renderProviderPercentage() external view returns (uint256); function mint( address _to, uint256 _projectId, address _by ) external returns (uint256 tokenId); function getRoyaltyData(uint256 _tokenId) external view returns ( address artistAddress, address additionalPayee, uint256 additionalPayeePercentage, uint256 royaltyFeeByID ); }
// SPDX-License-Identifier: LGPL-3.0-only // Created By: Art Blocks Inc. pragma solidity ^0.8.0; interface IGenArt721CoreContractV1 { // getter function of public variable function admin() external view returns (address); // getter function of public variable function nextProjectId() external view returns (uint256); // getter function of public mapping function tokenIdToProjectId(uint256 tokenId) external view returns (uint256 projectId); function isWhitelisted(address sender) external view returns (bool); // @dev this is not available in V0 function isMintWhitelisted(address minter) external view returns (bool); function projectIdToArtistAddress(uint256 _projectId) external view returns (address payable); function projectIdToAdditionalPayee(uint256 _projectId) external view returns (address payable); function projectIdToAdditionalPayeePercentage(uint256 _projectId) external view returns (uint256); function projectTokenInfo(uint256 _projectId) external view returns ( address, uint256, uint256, uint256, bool, address, uint256, string memory, address ); function artblocksAddress() external view returns (address payable); function artblocksPercentage() external view returns (uint256); function mint( address _to, uint256 _projectId, address _by ) external returns (uint256 tokenId); function getRoyaltyData(uint256 _tokenId) external view returns ( address artistAddress, address additionalPayee, uint256 additionalPayeePercentage, uint256 royaltyFeeByID ); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) 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); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) 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(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol) 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 { _setApprovalForAll(_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); _afterTokenTransfer(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); _afterTokenTransfer(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 from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(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 Approve `operator` to operate on all of `owner` tokens * * Emits a {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @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 {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) 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); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) 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; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @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 * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 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); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) 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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) 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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) 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); }
{ "optimizer": { "enabled": true, "runs": 100 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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payable","name":"_renderProviderAddress","type":"address"}],"name":"updateRenderProviderAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_renderProviderPercentage","type":"uint256"}],"name":"updateRenderProviderPercentage","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000088098f7438773182b703625c4128aff85fcffc4000000000000000000000000000000000000000000000000000000000000001141727420426c6f636b732078205061636500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000074142585041434500000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _tokenName (string): Art Blocks x Pace
Arg [1] : _tokenSymbol (string): ABXPACE
Arg [2] : _randomizerContract (address): 0x088098F7438773182b703625C4128aFf85fcFfC4
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 000000000000000000000000088098f7438773182b703625c4128aff85fcffc4
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000011
Arg [4] : 41727420426c6f636b7320782050616365000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [6] : 4142585041434500000000000000000000000000000000000000000000000000
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