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Latest 8 from a total of 8 transactions
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Mint And Approve | 14357014 | 1011 days ago | IN | 0 ETH | 0.00575009 | ||||
Mint And Approve | 14311480 | 1018 days ago | IN | 0 ETH | 0.00903933 | ||||
Mint And Approve | 14306002 | 1019 days ago | IN | 0 ETH | 0.00598971 | ||||
Mint And Approve | 14305989 | 1019 days ago | IN | 0 ETH | 0.00560392 | ||||
Mint And Approve | 14299059 | 1020 days ago | IN | 0 ETH | 0.01108389 | ||||
Mint And Approve | 14271810 | 1024 days ago | IN | 0 ETH | 0.00879942 | ||||
Mint And Approve | 14189286 | 1037 days ago | IN | 0 ETH | 0.00940741 | ||||
Mint And Approve | 14143670 | 1044 days ago | IN | 0 ETH | 0.01327333 |
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14143593 | 1044 days ago | Contract Creation | 0 ETH |
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Minimal Proxy Contract for 0xe38f942db7a1b4213d6213f70c499b59287b01f1
Contract Name:
CollectionContract
Compiler Version
v0.8.11+commit.d7f03943
Optimization Enabled:
Yes with 1337 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721BurnableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol"; import "./interfaces/ICollectionContractInitializer.sol"; import "./interfaces/ICollectionFactory.sol"; import "./interfaces/IGetRoyalties.sol"; import "./interfaces/IProxyCall.sol"; import "./interfaces/ITokenCreator.sol"; import "./interfaces/ITokenCreatorPaymentAddress.sol"; import "./interfaces/IGetFees.sol"; import "./libraries/AccountMigrationLibrary.sol"; import "./libraries/ProxyCall.sol"; import "./libraries/BytesLibrary.sol"; import "./interfaces/IRoyaltyInfo.sol"; /** * @title A collection of NFTs. * @notice All NFTs from this contract are minted by the same creator. * A 10% royalty to the creator is included which may be split with collaborators. */ contract CollectionContract is ICollectionContractInitializer, IGetRoyalties, IGetFees, IRoyaltyInfo, ITokenCreator, ITokenCreatorPaymentAddress, ERC721BurnableUpgradeable { using AccountMigrationLibrary for address; using AddressUpgradeable for address; using BytesLibrary for bytes; using ProxyCall for IProxyCall; uint256 private constant ROYALTY_IN_BASIS_POINTS = 1000; uint256 private constant ROYALTY_RATIO = 10; /** * @notice The baseURI to use for the tokenURI, if undefined then `ipfs://` is used. */ string private baseURI_; /** * @dev Stores hashes minted to prevent duplicates. */ mapping(string => bool) private cidToMinted; /** * @notice The factory which was used to create this collection. * @dev This is used to read common config. */ ICollectionFactory public immutable collectionFactory; /** * @notice The tokenId of the most recently created NFT. * @dev Minting starts at tokenId 1. Each mint will use this value + 1. */ uint256 public latestTokenId; /** * @notice The max tokenId which can be minted, or 0 if there's no limit. * @dev This value may be set at any time, but once set it cannot be increased. */ uint256 public maxTokenId; /** * @notice The owner/creator of this NFT collection. */ address payable public owner; /** * @dev Stores an optional alternate address to receive creator revenue and royalty payments. * The target address may be a contract which could split or escrow payments. */ mapping(uint256 => address payable) private tokenIdToCreatorPaymentAddress; /** * @dev Tracks how many tokens have been burned, used to calc the total supply efficiently. */ uint256 private burnCounter; /** * @dev Stores a CID for each NFT. */ mapping(uint256 => string) private _tokenCIDs; event BaseURIUpdated(string baseURI); event CreatorMigrated(address indexed originalAddress, address indexed newAddress); event MaxTokenIdUpdated(uint256 indexed maxTokenId); event Minted(address indexed creator, uint256 indexed tokenId, string indexed indexedTokenCID, string tokenCID); event NFTOwnerMigrated(uint256 indexed tokenId, address indexed originalAddress, address indexed newAddress); event PaymentAddressMigrated( uint256 indexed tokenId, address indexed originalAddress, address indexed newAddress, address originalPaymentAddress, address newPaymentAddress ); event SelfDestruct(address indexed owner); event TokenCreatorPaymentAddressSet( address indexed fromPaymentAddress, address indexed toPaymentAddress, uint256 indexed tokenId ); modifier onlyOwner() { require(msg.sender == owner, "CollectionContract: Caller is not owner"); _; } modifier onlyOperator() { require(collectionFactory.rolesContract().isOperator(msg.sender), "CollectionContract: Caller is not an operator"); _; } /** * @dev The constructor for a proxy can only be used to assign immutable variables. */ constructor(address _collectionFactory) { require(_collectionFactory.isContract(), "CollectionContract: collectionFactory is not a contract"); collectionFactory = ICollectionFactory(_collectionFactory); } /** * @notice Called by the factory on creation. * @dev This may only be called once. */ function initialize( address payable _creator, string memory _name, string memory _symbol ) external initializer { require(msg.sender == address(collectionFactory), "CollectionContract: Collection must be created via the factory"); __ERC721_init_unchained(_name, _symbol); owner = _creator; } /** * @notice Allows the owner to mint an NFT defined by its metadata path. */ function mint(string memory tokenCID) public returns (uint256 tokenId) { tokenId = _mint(tokenCID); } /** * @notice Allows the owner to mint and sets approval for all for the provided operator. * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval * transaction before starting an auction. */ function mintAndApprove(string memory tokenCID, address operator) public returns (uint256 tokenId) { tokenId = _mint(tokenCID); setApprovalForAll(operator, true); } /** * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address. */ function mintWithCreatorPaymentAddress(string memory tokenCID, address payable tokenCreatorPaymentAddress) public returns (uint256 tokenId) { require(tokenCreatorPaymentAddress != address(0), "CollectionContract: tokenCreatorPaymentAddress is required"); tokenId = mint(tokenCID); _setTokenCreatorPaymentAddress(tokenId, tokenCreatorPaymentAddress); } /** * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address. * Also sets approval for all for the provided operator. * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval * transaction before starting an auction. */ function mintWithCreatorPaymentAddressAndApprove( string memory tokenCID, address payable tokenCreatorPaymentAddress, address operator ) public returns (uint256 tokenId) { tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress); setApprovalForAll(operator, true); } /** * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address * which is defined by a contract call, typically a proxy contract address representing the payment terms. * @param paymentAddressFactory The contract to call which will return the address to use for payments. * @param paymentAddressCallData The call details to sent to the factory provided. */ function mintWithCreatorPaymentFactory( string memory tokenCID, address paymentAddressFactory, bytes memory paymentAddressCallData ) public returns (uint256 tokenId) { address payable tokenCreatorPaymentAddress = collectionFactory .proxyCallContract() .proxyCallAndReturnContractAddress(paymentAddressFactory, paymentAddressCallData); tokenId = mintWithCreatorPaymentAddress(tokenCID, tokenCreatorPaymentAddress); } /** * @notice Allows the owner to mint an NFT and have creator revenue/royalties sent to an alternate address * which is defined by a contract call, typically a proxy contract address representing the payment terms. * Also sets approval for all for the provided operator. * @param paymentAddressFactory The contract to call which will return the address to use for payments. * @param paymentAddressCallData The call details to sent to the factory provided. * @dev This can be used by creators the first time they mint an NFT to save having to issue a separate approval * transaction before starting an auction. */ function mintWithCreatorPaymentFactoryAndApprove( string memory tokenCID, address paymentAddressFactory, bytes memory paymentAddressCallData, address operator ) public returns (uint256 tokenId) { tokenId = mintWithCreatorPaymentFactory(tokenCID, paymentAddressFactory, paymentAddressCallData); setApprovalForAll(operator, true); } /** * @notice Allows the owner to set a max tokenID. * This provides a guarantee to collectors about the limit of this collection contract, if applicable. * @dev Once this value has been set, it may be decreased but can never be increased. */ function updateMaxTokenId(uint256 _maxTokenId) external onlyOwner { require(_maxTokenId > 0, "CollectionContract: Max token ID may not be cleared"); require(maxTokenId == 0 || _maxTokenId < maxTokenId, "CollectionContract: Max token ID may not increase"); require(latestTokenId + 1 <= _maxTokenId, "CollectionContract: Max token ID must be greater than last mint"); maxTokenId = _maxTokenId; emit MaxTokenIdUpdated(_maxTokenId); } /** * @notice Allows the owner to assign a baseURI to use for the tokenURI instead of the default `ipfs://`. */ function updateBaseURI(string calldata baseURIOverride) external onlyOwner { baseURI_ = baseURIOverride; emit BaseURIUpdated(baseURIOverride); } /** * @notice Allows the creator to burn if they currently own the NFT. */ function burn(uint256 tokenId) public override onlyOwner { super.burn(tokenId); } /** * @notice Allows the collection owner to destroy this contract only if * no NFTs have been minted yet. */ function selfDestruct() external onlyOwner { require(totalSupply() == 0, "CollectionContract: Any NFTs minted must be burned first"); emit SelfDestruct(msg.sender); selfdestruct(payable(msg.sender)); } /** * @notice Allows an NFT owner or creator and Foundation to work together in order to update the creator * to a new account and/or transfer NFTs to that account. * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}` * signed by the original account. * @dev This will gracefully skip any NFTs that have been burned or transferred. */ function adminAccountMigration( uint256[] calldata ownedTokenIds, address originalAddress, address payable newAddress, bytes calldata signature ) public onlyOperator { originalAddress.requireAuthorizedAccountMigration(newAddress, signature); for (uint256 i = 0; i < ownedTokenIds.length; i++) { uint256 tokenId = ownedTokenIds[i]; // Check that the token exists and still is owned by the originalAddress // so that frontrunning a burn or transfer will not cause the entire tx to revert if (_exists(tokenId) && ownerOf(tokenId) == originalAddress) { _transfer(originalAddress, newAddress, tokenId); emit NFTOwnerMigrated(tokenId, originalAddress, newAddress); } } if (owner == originalAddress) { owner = newAddress; emit CreatorMigrated(originalAddress, newAddress); } } /** * @notice Allows a split recipient and Foundation to work together in order to update the payment address * to a new account. * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}` * signed by the original account. */ function adminAccountMigrationForPaymentAddresses( uint256[] calldata paymentAddressTokenIds, address paymentAddressFactory, bytes memory paymentAddressCallData, uint256 addressLocationInCallData, address originalAddress, address payable newAddress, bytes calldata signature ) public onlyOperator { originalAddress.requireAuthorizedAccountMigration(newAddress, signature); _adminAccountRecoveryForPaymentAddresses( paymentAddressTokenIds, paymentAddressFactory, paymentAddressCallData, addressLocationInCallData, originalAddress, newAddress ); } function baseURI() external view returns (string memory) { return _baseURI(); } /** * @notice Returns an array of recipient addresses to which royalties for secondary sales should be sent. * The expected royalty amount is communicated with `getFeeBps`. */ function getFeeRecipients(uint256 id) external view returns (address payable[] memory recipients) { recipients = new address payable[](1); recipients[0] = getTokenCreatorPaymentAddress(id); } /** * @notice Returns an array of royalties to be sent for secondary sales in basis points. * The expected recipients is communicated with `getFeeRecipients`. */ function getFeeBps( uint256 /* id */ ) external pure returns (uint256[] memory feesInBasisPoints) { feesInBasisPoints = new uint256[](1); feesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS; } /** * @notice Checks if the creator has already minted a given NFT using this collection contract. */ function getHasMintedCID(string memory tokenCID) public view returns (bool) { return cidToMinted[tokenCID]; } /** * @notice Returns an array of royalties to be sent for secondary sales. */ function getRoyalties(uint256 tokenId) external view returns (address payable[] memory recipients, uint256[] memory feesInBasisPoints) { recipients = new address payable[](1); recipients[0] = getTokenCreatorPaymentAddress(tokenId); feesInBasisPoints = new uint256[](1); feesInBasisPoints[0] = ROYALTY_IN_BASIS_POINTS; } /** * @notice Returns the receiver and the amount to be sent for a secondary sale. */ function royaltyInfo(uint256 _tokenId, uint256 _salePrice) external view returns (address receiver, uint256 royaltyAmount) { receiver = getTokenCreatorPaymentAddress(_tokenId); unchecked { royaltyAmount = _salePrice / ROYALTY_RATIO; } } /** * @notice Returns the creator for an NFT, which is always the collection owner. */ function tokenCreator( uint256 /* tokenId */ ) external view returns (address payable) { return owner; } /** * @notice Returns the desired payment address to be used for any transfers to the creator. * @dev The payment address may be assigned for each individual NFT, if not defined the collection owner is returned. */ function getTokenCreatorPaymentAddress(uint256 tokenId) public view returns (address payable tokenCreatorPaymentAddress) { tokenCreatorPaymentAddress = tokenIdToCreatorPaymentAddress[tokenId]; if (tokenCreatorPaymentAddress == address(0)) { tokenCreatorPaymentAddress = owner; } } /** * @notice Count of NFTs tracked by this contract. * @dev From the ERC-721 enumerable standard. */ function totalSupply() public view returns (uint256) { unchecked { return latestTokenId - burnCounter; } } function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { if ( interfaceId == type(IGetRoyalties).interfaceId || interfaceId == type(ITokenCreator).interfaceId || interfaceId == type(ITokenCreatorPaymentAddress).interfaceId || interfaceId == type(IGetFees).interfaceId || interfaceId == type(IRoyaltyInfo).interfaceId ) { return true; } return super.supportsInterface(interfaceId); } function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "CollectionContract: URI query for nonexistent token"); return string(abi.encodePacked(_baseURI(), _tokenCIDs[tokenId])); } function _mint(string memory tokenCID) private onlyOwner returns (uint256 tokenId) { require(bytes(tokenCID).length > 0, "CollectionContract: tokenCID is required"); require(!cidToMinted[tokenCID], "CollectionContract: NFT was already minted"); unchecked { tokenId = ++latestTokenId; require(maxTokenId == 0 || tokenId <= maxTokenId, "CollectionContract: Max token count has already been minted"); cidToMinted[tokenCID] = true; _tokenCIDs[tokenId] = tokenCID; _safeMint(msg.sender, tokenId, ""); emit Minted(msg.sender, tokenId, tokenCID, tokenCID); } } /** * @dev Allow setting a different address to send payments to for both primary sale revenue * and secondary sales royalties. */ function _setTokenCreatorPaymentAddress(uint256 tokenId, address payable tokenCreatorPaymentAddress) internal { emit TokenCreatorPaymentAddressSet(tokenIdToCreatorPaymentAddress[tokenId], tokenCreatorPaymentAddress, tokenId); tokenIdToCreatorPaymentAddress[tokenId] = tokenCreatorPaymentAddress; } function _burn(uint256 tokenId) internal override { delete cidToMinted[_tokenCIDs[tokenId]]; delete tokenIdToCreatorPaymentAddress[tokenId]; delete _tokenCIDs[tokenId]; unchecked { burnCounter++; } super._burn(tokenId); } /** * @dev Split into a second function to avoid stack too deep errors */ function _adminAccountRecoveryForPaymentAddresses( uint256[] calldata paymentAddressTokenIds, address paymentAddressFactory, bytes memory paymentAddressCallData, uint256 addressLocationInCallData, address originalAddress, address payable newAddress ) private { // Call the factory and get the originalPaymentAddress address payable originalPaymentAddress = collectionFactory.proxyCallContract().proxyCallAndReturnContractAddress( paymentAddressFactory, paymentAddressCallData ); // Confirm the original address and swap with the new address paymentAddressCallData.replaceAtIf(addressLocationInCallData, originalAddress, newAddress); // Call the factory and get the newPaymentAddress address payable newPaymentAddress = collectionFactory.proxyCallContract().proxyCallAndReturnContractAddress( paymentAddressFactory, paymentAddressCallData ); // For each token, confirm the expected payment address and then update to the new one for (uint256 i = 0; i < paymentAddressTokenIds.length; i++) { uint256 tokenId = paymentAddressTokenIds[i]; require( tokenIdToCreatorPaymentAddress[tokenId] == originalPaymentAddress, "CollectionContract: Payment address is not the expected value" ); _setTokenCreatorPaymentAddress(tokenId, newPaymentAddress); emit PaymentAddressMigrated(tokenId, originalAddress, newAddress, originalPaymentAddress, newPaymentAddress); } } function _baseURI() internal view override returns (string memory) { if (bytes(baseURI_).length > 0) { return baseURI_; } return "ipfs://"; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Burnable.sol) pragma solidity ^0.8.0; import "../ERC721Upgradeable.sol"; import "../../../utils/ContextUpgradeable.sol"; import "../../../proxy/utils/Initializable.sol"; /** * @title ERC721 Burnable Token * @dev ERC721 Token that can be irreversibly burned (destroyed). */ abstract contract ERC721BurnableUpgradeable is Initializable, ContextUpgradeable, ERC721Upgradeable { function __ERC721Burnable_init() internal onlyInitializing { __Context_init_unchained(); __ERC165_init_unchained(); __ERC721Burnable_init_unchained(); } function __ERC721Burnable_init_unchained() internal onlyInitializing { } /** * @dev Burns `tokenId`. See {ERC721-_burn}. * * Requirements: * * - The caller must own `tokenId` or be an approved operator. */ function burn(uint256 tokenId) public virtual { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved"); _burn(tokenId); } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library AddressUpgradeable { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev 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 OR Apache-2.0 pragma solidity ^0.8.0; interface ICollectionContractInitializer { function initialize( address payable _creator, string memory _name, string memory _symbol ) external; }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import "./IRoles.sol"; import "./IProxyCall.sol"; interface ICollectionFactory { function rolesContract() external returns (IRoles); function proxyCallContract() external returns (IProxyCall); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface IGetRoyalties { function getRoyalties(uint256 tokenId) external view returns (address payable[] memory recipients, uint256[] memory feesInBasisPoints); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface IProxyCall { function proxyCallAndReturnAddress(address externalContract, bytes calldata callData) external returns (address payable result); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface ITokenCreator { function tokenCreator(uint256 tokenId) external view returns (address payable); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; interface ITokenCreatorPaymentAddress { function getTokenCreatorPaymentAddress(uint256 tokenId) external view returns (address payable tokenCreatorPaymentAddress); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; /** * @notice An interface for communicating fees to 3rd party marketplaces. * @dev Originally implemented in mainnet contract 0x44d6e8933f8271abcf253c72f9ed7e0e4c0323b3 */ interface IGetFees { function getFeeRecipients(uint256 id) external view returns (address payable[] memory); function getFeeBps(uint256 id) external view returns (uint256[] memory); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "@openzeppelin/contracts/utils/cryptography/SignatureChecker.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; /** * @notice Checks for a valid signature authorizing the migration of an account to a new address. * @dev This is shared by both the NFT contracts and FNDNFTMarket, and the same signature authorizes both. */ library AccountMigrationLibrary { using ECDSA for bytes; using SignatureChecker for address; using Strings for uint256; // From https://ethereum.stackexchange.com/questions/8346/convert-address-to-string function _toAsciiString(address x) private pure returns (string memory) { bytes memory s = new bytes(42); s[0] = "0"; s[1] = "x"; for (uint256 i = 0; i < 20; i++) { bytes1 b = bytes1(uint8(uint256(uint160(x)) / (2**(8 * (19 - i))))); bytes1 hi = bytes1(uint8(b) / 16); bytes1 lo = bytes1(uint8(b) - 16 * uint8(hi)); s[2 * i + 2] = _char(hi); s[2 * i + 3] = _char(lo); } return string(s); } function _char(bytes1 b) private pure returns (bytes1 c) { if (uint8(b) < 10) return bytes1(uint8(b) + 0x30); else return bytes1(uint8(b) + 0x57); } /** * @dev Confirms the msg.sender is a Foundation operator and that the signature provided is valid. * @param signature Message `I authorize Foundation to migrate my account to ${newAccount.address.toLowerCase()}` * signed by the original account. */ function requireAuthorizedAccountMigration( address originalAddress, address newAddress, bytes memory signature ) internal view { require(originalAddress != newAddress, "AccountMigration: Cannot migrate to the same account"); bytes32 hash = abi .encodePacked("I authorize Foundation to migrate my account to ", _toAsciiString(newAddress)) .toEthSignedMessageHash(); require( originalAddress.isValidSignatureNow(hash, signature), "AccountMigration: Signature must be from the original account" ); } }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; import "@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol"; import "../interfaces/IProxyCall.sol"; /** * @notice Forwards arbitrary calls to an external contract to be processed. * @dev This is used so that the from address of the calling contract does not have * any special permissions (e.g. ERC-20 transfer). */ library ProxyCall { using AddressUpgradeable for address payable; /** * @dev Used by other mixins to make external calls through the proxy contract. * This will fail if the proxyCall address is address(0). */ function proxyCallAndReturnContractAddress( IProxyCall proxyCall, address externalContract, bytes memory callData ) internal returns (address payable result) { result = proxyCall.proxyCallAndReturnAddress(externalContract, callData); require(result.isContract(), "ProxyCall: address returned is not a contract"); } }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; /** * @notice A library for manipulation of byte arrays. */ library BytesLibrary { /** * @dev Replace the address at the given location in a byte array if the contents at that location * match the expected address. */ function replaceAtIf( bytes memory data, uint256 startLocation, address expectedAddress, address newAddress ) internal pure { bytes memory expectedData = abi.encodePacked(expectedAddress); bytes memory newData = abi.encodePacked(newAddress); // An address is 20 bytes long for (uint256 i = 0; i < 20; i++) { uint256 dataLocation = startLocation + i; require(data[dataLocation] == expectedData[i], "Bytes: Data provided does not include the expectedAddress"); data[dataLocation] = newData[i]; } } /** * @dev Checks if the call data starts with the given function signature. */ function startsWith(bytes memory callData, bytes4 functionSig) internal pure returns (bool) { // A signature is 4 bytes long if (callData.length < 4) { return false; } for (uint256 i = 0; i < 4; i++) { if (callData[i] != functionSig[i]) { return false; } } return true; } }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; /** * @notice Interface for EIP-2981: NFT Royalty Standard. * For more see: https://eips.ethereum.org/EIPS/eip-2981. */ interface IRoyaltyInfo { /// @notice Called with the sale price to determine how much royalty // is owed and to whom. /// @param _tokenId - the NFT asset queried for royalty information /// @param _salePrice - the sale price of the NFT asset specified by _tokenId /// @return receiver - address of who should be sent the royalty payment /// @return royaltyAmount - the royalty payment amount for _salePrice function royaltyInfo(uint256 _tokenId, uint256 _salePrice) external view returns (address receiver, uint256 royaltyAmount); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721Upgradeable.sol"; import "./IERC721ReceiverUpgradeable.sol"; import "./extensions/IERC721MetadataUpgradeable.sol"; import "../../utils/AddressUpgradeable.sol"; import "../../utils/ContextUpgradeable.sol"; import "../../utils/StringsUpgradeable.sol"; import "../../utils/introspection/ERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.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 ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable { using AddressUpgradeable for address; using StringsUpgradeable 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. */ function __ERC721_init(string memory name_, string memory symbol_) internal onlyInitializing { __Context_init_unchained(); __ERC165_init_unchained(); __ERC721_init_unchained(name_, symbol_); } function __ERC721_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) { return interfaceId == type(IERC721Upgradeable).interfaceId || interfaceId == type(IERC721MetadataUpgradeable).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 = ERC721Upgradeable.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 = ERC721Upgradeable.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721Upgradeable.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721Upgradeable.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 IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721ReceiverUpgradeable.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 {} uint256[44] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; import "../proxy/utils/Initializable.sol"; /** * @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 ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { __Context_init_unchained(); } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } uint256[50] private __gap; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/utils/Initializable.sol) pragma solidity ^0.8.0; import "../../utils/AddressUpgradeable.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To initialize the implementation contract, you can either invoke the * initializer manually, or you can include a constructor to automatically mark it as initialized when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() initializer {} * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. */ bool private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Modifier to protect an initializer function from being invoked twice. */ modifier initializer() { // If the contract is initializing we ignore whether _initialized is set in order to support multiple // inheritance patterns, but we only do this in the context of a constructor, because in other contexts the // contract may have been reentered. require(_initializing ? _isConstructor() : !_initialized, "Initializable: contract is already initialized"); bool isTopLevelCall = !_initializing; if (isTopLevelCall) { _initializing = true; _initialized = true; } _; if (isTopLevelCall) { _initializing = false; } } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} modifier, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } function _isConstructor() private view returns (bool) { return !AddressUpgradeable.isContract(address(this)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165Upgradeable.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721Upgradeable is IERC165Upgradeable { /** * @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 IERC721ReceiverUpgradeable { /** * @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 "../IERC721Upgradeable.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721MetadataUpgradeable is IERC721Upgradeable { /** * @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 v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library StringsUpgradeable { 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 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165Upgradeable.sol"; import "../../proxy/utils/Initializable.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 ERC165Upgradeable is Initializable, IERC165Upgradeable { function __ERC165_init() internal onlyInitializing { __ERC165_init_unchained(); } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165Upgradeable).interfaceId; } uint256[50] private __gap; }
// 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 IERC165Upgradeable { /** * @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); }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity ^0.8.0; /** * @notice Interface for a contract which implements admin roles. */ interface IRoles { function isAdmin(address account) external view returns (bool); function isOperator(address account) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s; uint8 v; assembly { s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) v := add(shr(255, vs), 27) } return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/cryptography/SignatureChecker.sol) pragma solidity ^0.8.0; import "./ECDSA.sol"; import "../Address.sol"; import "../../interfaces/IERC1271.sol"; /** * @dev Signature verification helper: Provide a single mechanism to verify both private-key (EOA) ECDSA signature and * ERC1271 contract signatures. Using this instead of ECDSA.recover in your contract will make them compatible with * smart contract wallets such as Argent and Gnosis. * * Note: unlike ECDSA signatures, contract signature's are revocable, and the outcome of this function can thus change * through time. It could return true at block N and false at block N+1 (or the opposite). * * _Available since v4.1._ */ library SignatureChecker { function isValidSignatureNow( address signer, bytes32 hash, bytes memory signature ) internal view returns (bool) { (address recovered, ECDSA.RecoverError error) = ECDSA.tryRecover(hash, signature); if (error == ECDSA.RecoverError.NoError && recovered == signer) { return true; } (bool success, bytes memory result) = signer.staticcall( abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature) ); return (success && result.length == 32 && abi.decode(result, (bytes4)) == IERC1271.isValidSignature.selector); } }
// 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 (utils/Address.sol) pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC1271 standard signature validation method for * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271]. * * _Available since v4.1._ */ interface IERC1271 { /** * @dev Should return whether the signature provided is valid for the provided data * @param hash Hash of the data to be signed * @param signature Signature byte array associated with _data */ function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue); }
{ "optimizer": { "enabled": true, "runs": 1337 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.