More Info
Private Name Tags
ContractCreator
TokenTracker
Latest 25 from a total of 440 transactions
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Set Approval For... | 65214281 | 3 hrs ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 64880086 | 8 days ago | IN | 0 POL | 0.00403437 | ||||
Set Approval For... | 64842144 | 9 days ago | IN | 0 POL | 0.00154355 | ||||
Set Approval For... | 64371863 | 21 days ago | IN | 0 POL | 0.0014007 | ||||
Set Approval For... | 63352765 | 46 days ago | IN | 0 POL | 0.00215517 | ||||
Set Approval For... | 62782397 | 60 days ago | IN | 0 POL | 0.0029245 | ||||
Set Approval For... | 62266068 | 73 days ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 62103214 | 77 days ago | IN | 0 POL | 0.00140187 | ||||
Set Approval For... | 61827752 | 84 days ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 61626369 | 89 days ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 60579760 | 115 days ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 60474127 | 118 days ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 60312750 | 122 days ago | IN | 0 POL | 0.00140052 | ||||
Set Approval For... | 59787840 | 135 days ago | IN | 0 POL | 0.00140052 | ||||
Public Mint | 59569598 | 141 days ago | IN | 100 POL | 0.00425337 | ||||
Transfer Ownersh... | 59557690 | 141 days ago | IN | 0 POL | 0.00175168 | ||||
Set Approval For... | 59235045 | 149 days ago | IN | 0 POL | 0.00223142 | ||||
Public Mint | 59234896 | 149 days ago | IN | 50 POL | 0.00536557 | ||||
Public Mint | 59112741 | 152 days ago | IN | 50 POL | 0.01605993 | ||||
Reserve Tokens | 59108242 | 152 days ago | IN | 0 POL | 0.00679137 | ||||
Reserve Tokens | 59105294 | 152 days ago | IN | 0 POL | 0.00599274 | ||||
Set Approval For... | 59104103 | 152 days ago | IN | 0 POL | 0.00214042 | ||||
Public Mint | 59090044 | 153 days ago | IN | 50 POL | 0.01036993 | ||||
Public Mint | 59035461 | 154 days ago | IN | 50 POL | 0.00341649 | ||||
Safe Transfer Fr... | 59021862 | 154 days ago | IN | 0 POL | 0.00174195 |
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Contract Name:
HangryAnimals
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
/* _ _ _ _ _ ___ _____ __ _ _ _ ___ __ __ _ _ ___ ___ ___ _ _ ___ ___ ___ ___ | || | /_\ | \| |/ __| _ \ \ / / /_\ | \| |_ _| \/ | /_\ | | / __| / __| __| \| | __/ __|_ _/ __| | __ |/ _ \| .` | (_ | /\ V / / _ \| .` || || |\/| |/ _ \| |__\__ \ | (_ | _|| .` | _|\__ \| |\__ \ |_||_/_/ \_\_|\_|\___|_|_\ |_| /_/ \_\_|\_|___|_| |_/_/ \_\____|___/ \___|___|_|\_|___|___/___|___/ */ //SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@limitbreak/creator-token-contracts/contracts/access/OwnableBasic.sol"; import "@limitbreak/creator-token-contracts/contracts/erc721c/ERC721AC.sol"; import "./MutableMinterRoyalties.sol"; error InsufficientPayment(); contract HangryAnimals is OwnableBasic, ERC721AC, MutableMinterRoyalties { uint256 public MAX_TOKENS = 5555; uint256 public TOKEN_RESERVE = 2041; uint96 public ROYALTY_PERCENT = 1000; // 10% string public baseTokenURI; bool public publicMintActive = false; // This mint price is specified in MATIC uint256 public publicMintPrice = 50 ether; // 50 MATIC uint256 public maxTokenPurchase = 10; // Mapping from token ID to unique URI mapping(uint256 => string) private _tokenURIs; constructor() ERC721AC("Hangry Animals Genesis", "HANGRY") MutableMinterRoyalties(ROYALTY_PERCENT) {} function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721AC, MutableMinterRoyaltiesBase) returns (bool) { return super.supportsInterface(interfaceId); } function _startTokenId() internal view virtual override returns (uint256) { return 1; } function reserveTokens(address _to, uint256 _reserveAmount) external onlyOwner { require(_reserveAmount <= TOKEN_RESERVE, "Reserve exceeds limit"); require(totalSupply() + _reserveAmount <= MAX_TOKENS, "Max supply exceeded"); _mint(_to, _reserveAmount); TOKEN_RESERVE -= _reserveAmount; } function publicMint(uint256 _numberOfTokens) external payable { require(publicMintActive, "Sale not active"); require(msg.sender == tx.origin, "Caller cannot be a contract"); require(_numberOfTokens <= maxTokenPurchase, "Exceeds max token purchase"); require(totalSupply() + _numberOfTokens <= MAX_TOKENS - TOKEN_RESERVE, "Max supply exceeded"); uint256 cost = _numberOfTokens * publicMintPrice; require(msg.value >= cost, "Insufficient payment"); _mint(msg.sender, _numberOfTokens); } function _mint(address to, uint256 quantity) internal virtual override { uint256 nextTokenId = _nextTokenId(); for (uint256 i = 0; i < quantity;) { _onMinted(to, nextTokenId + i); unchecked { ++i; } } super._mint(to, quantity); } function _baseURI() internal view virtual override returns (string memory) { return baseTokenURI; } function setBaseURI(string memory baseURI) external onlyOwner { baseTokenURI = baseURI; } function setTokenURI(uint256 tokenId, string memory _uri) external onlyOwner { require(_exists(tokenId), "ERC721URIStorage: token doesn't exist"); _tokenURIs[tokenId] = _uri; } function removeTokenURI(uint256 tokenId) external onlyOwner { require(_exists(tokenId), "ERC721Metadata: unique URI removal for token"); delete _tokenURIs[tokenId]; } // Override tokenURI function to return custom URI if set function tokenURI(uint256 tokenId) public view override returns (string memory) { require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token"); string memory _uri = _tokenURIs[tokenId]; if (bytes(_uri).length > 0) { return _uri; } return string(abi.encodePacked(super.tokenURI(tokenId), ".json")); } function togglePublicMint() external onlyOwner { publicMintActive = !publicMintActive; } function setPublicMintPrice(uint256 _newPrice) external onlyOwner { publicMintPrice = _newPrice; } function setMaxTokenPurchase(uint256 _newMaxTokenPurchase) external onlyOwner { maxTokenPurchase = _newMaxTokenPurchase; } function setTokenReserve(uint256 _newTokenReserve) external onlyOwner { TOKEN_RESERVE = _newTokenReserve; } function remainingSupply() external view returns (uint256) { return MAX_TOKENS - totalSupply(); } function setMaxSupply(uint256 _newMax) external onlyOwner { require(MAX_TOKENS > totalSupply(), "Can't set below current"); MAX_TOKENS = _newMax; } function withdrawBalance() external onlyOwner { payable(owner()).transfer(address(this).balance); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "./OwnablePermissions.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; abstract contract OwnableBasic is OwnablePermissions, Ownable { function _requireCallerIsContractOwner() internal view virtual override { _checkOwner(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/Context.sol"; abstract contract OwnablePermissions is Context { function _requireCallerIsContractOwner() internal view virtual; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../utils/CreatorTokenBase.sol"; import "erc721a/contracts/ERC721A.sol"; /** * @title ERC721AC * @author Limit Break, Inc. * @notice Extends Azuki's ERC721-A implementation with Creator Token functionality, which * allows the contract owner to update the transfer validation logic by managing a security policy in * an external transfer validation security policy registry. See {CreatorTokenTransferValidator}. */ abstract contract ERC721AC is ERC721A, CreatorTokenBase { constructor(string memory name_, string memory symbol_) CreatorTokenBase() ERC721A(name_, symbol_) {} function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(ICreatorToken).interfaceId || super.supportsInterface(interfaceId); } /// @dev Ties the erc721a _beforeTokenTransfers hook to more granular transfer validation logic function _beforeTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual override { for (uint256 i = 0; i < quantity;) { _validateBeforeTransfer(from, to, startTokenId + i); unchecked { ++i; } } } /// @dev Ties the erc721a _afterTokenTransfer hook to more granular transfer validation logic function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual override { for (uint256 i = 0; i < quantity;) { _validateAfterTransfer(from, to, startTokenId + i); unchecked { ++i; } } } function _msgSenderERC721A() internal view virtual override returns (address) { return _msgSender(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../interfaces/ICreatorTokenTransferValidator.sol"; interface ICreatorToken { event TransferValidatorUpdated(address oldValidator, address newValidator); function getTransferValidator() external view returns (ICreatorTokenTransferValidator); function getSecurityPolicy() external view returns (CollectionSecurityPolicy memory); function getWhitelistedOperators() external view returns (address[] memory); function getPermittedContractReceivers() external view returns (address[] memory); function isOperatorWhitelisted(address operator) external view returns (bool); function isContractReceiverPermitted(address receiver) external view returns (bool); function isTransferAllowed(address caller, address from, address to) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "./IEOARegistry.sol"; import "./ITransferSecurityRegistry.sol"; import "./ITransferValidator.sol"; interface ICreatorTokenTransferValidator is ITransferSecurityRegistry, ITransferValidator, IEOARegistry {}
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; interface IEOARegistry is IERC165 { function isVerifiedEOA(address account) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../utils/TransferPolicy.sol"; interface ITransferSecurityRegistry { event AddedToAllowlist(AllowlistTypes indexed kind, uint256 indexed id, address indexed account); event CreatedAllowlist(AllowlistTypes indexed kind, uint256 indexed id, string indexed name); event ReassignedAllowlistOwnership(AllowlistTypes indexed kind, uint256 indexed id, address indexed newOwner); event RemovedFromAllowlist(AllowlistTypes indexed kind, uint256 indexed id, address indexed account); event SetAllowlist(AllowlistTypes indexed kind, address indexed collection, uint120 indexed id); event SetTransferSecurityLevel(address indexed collection, TransferSecurityLevels level); function createOperatorWhitelist(string calldata name) external returns (uint120); function createPermittedContractReceiverAllowlist(string calldata name) external returns (uint120); function reassignOwnershipOfOperatorWhitelist(uint120 id, address newOwner) external; function reassignOwnershipOfPermittedContractReceiverAllowlist(uint120 id, address newOwner) external; function renounceOwnershipOfOperatorWhitelist(uint120 id) external; function renounceOwnershipOfPermittedContractReceiverAllowlist(uint120 id) external; function setTransferSecurityLevelOfCollection(address collection, TransferSecurityLevels level) external; function setOperatorWhitelistOfCollection(address collection, uint120 id) external; function setPermittedContractReceiverAllowlistOfCollection(address collection, uint120 id) external; function addOperatorToWhitelist(uint120 id, address operator) external; function addPermittedContractReceiverToAllowlist(uint120 id, address receiver) external; function removeOperatorFromWhitelist(uint120 id, address operator) external; function removePermittedContractReceiverFromAllowlist(uint120 id, address receiver) external; function getCollectionSecurityPolicy(address collection) external view returns (CollectionSecurityPolicy memory); function getWhitelistedOperators(uint120 id) external view returns (address[] memory); function getPermittedContractReceivers(uint120 id) external view returns (address[] memory); function isOperatorWhitelisted(uint120 id, address operator) external view returns (bool); function isContractReceiverPermitted(uint120 id, address receiver) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../utils/TransferPolicy.sol"; interface ITransferValidator { function applyCollectionTransferPolicy(address caller, address from, address to) external view; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "../access/OwnablePermissions.sol"; import "../interfaces/ICreatorToken.sol"; import "../interfaces/ICreatorTokenTransferValidator.sol"; import "../utils/TransferValidation.sol"; import "@openzeppelin/contracts/interfaces/IERC165.sol"; /** * @title CreatorTokenBase * @author Limit Break, Inc. * @notice CreatorTokenBase is an abstract contract that provides basic functionality for managing token * transfer policies through an implementation of ICreatorTokenTransferValidator. This contract is intended to be used * as a base for creator-specific token contracts, enabling customizable transfer restrictions and security policies. * * <h4>Features:</h4> * <ul>Ownable: This contract can have an owner who can set and update the transfer validator.</ul> * <ul>TransferValidation: Implements the basic token transfer validation interface.</ul> * <ul>ICreatorToken: Implements the interface for creator tokens, providing view functions for token security policies.</ul> * * <h4>Benefits:</h4> * <ul>Provides a flexible and modular way to implement custom token transfer restrictions and security policies.</ul> * <ul>Allows creators to enforce policies such as whitelisted operators and permitted contract receivers.</ul> * <ul>Can be easily integrated into other token contracts as a base contract.</ul> * * <h4>Intended Usage:</h4> * <ul>Use as a base contract for creator token implementations that require advanced transfer restrictions and * security policies.</ul> * <ul>Set and update the ICreatorTokenTransferValidator implementation contract to enforce desired policies for the * creator token.</ul> */ abstract contract CreatorTokenBase is OwnablePermissions, TransferValidation, ICreatorToken { error CreatorTokenBase__InvalidTransferValidatorContract(); error CreatorTokenBase__SetTransferValidatorFirst(); address public constant DEFAULT_TRANSFER_VALIDATOR = address(0x0000721C310194CcfC01E523fc93C9cCcFa2A0Ac); TransferSecurityLevels public constant DEFAULT_TRANSFER_SECURITY_LEVEL = TransferSecurityLevels.One; uint120 public constant DEFAULT_OPERATOR_WHITELIST_ID = uint120(1); ICreatorTokenTransferValidator private transferValidator; /** * @notice Allows the contract owner to set the transfer validator to the official validator contract * and set the security policy to the recommended default settings. * @dev May be overridden to change the default behavior of an individual collection. */ function setToDefaultSecurityPolicy() public virtual { _requireCallerIsContractOwner(); setTransferValidator(DEFAULT_TRANSFER_VALIDATOR); ICreatorTokenTransferValidator(DEFAULT_TRANSFER_VALIDATOR).setTransferSecurityLevelOfCollection(address(this), DEFAULT_TRANSFER_SECURITY_LEVEL); ICreatorTokenTransferValidator(DEFAULT_TRANSFER_VALIDATOR).setOperatorWhitelistOfCollection(address(this), DEFAULT_OPERATOR_WHITELIST_ID); } /** * @notice Allows the contract owner to set the transfer validator to a custom validator contract * and set the security policy to their own custom settings. */ function setToCustomValidatorAndSecurityPolicy( address validator, TransferSecurityLevels level, uint120 operatorWhitelistId, uint120 permittedContractReceiversAllowlistId) public { _requireCallerIsContractOwner(); setTransferValidator(validator); ICreatorTokenTransferValidator(validator). setTransferSecurityLevelOfCollection(address(this), level); ICreatorTokenTransferValidator(validator). setOperatorWhitelistOfCollection(address(this), operatorWhitelistId); ICreatorTokenTransferValidator(validator). setPermittedContractReceiverAllowlistOfCollection(address(this), permittedContractReceiversAllowlistId); } /** * @notice Allows the contract owner to set the security policy to their own custom settings. * @dev Reverts if the transfer validator has not been set. */ function setToCustomSecurityPolicy( TransferSecurityLevels level, uint120 operatorWhitelistId, uint120 permittedContractReceiversAllowlistId) public { _requireCallerIsContractOwner(); ICreatorTokenTransferValidator validator = getTransferValidator(); if (address(validator) == address(0)) { revert CreatorTokenBase__SetTransferValidatorFirst(); } validator.setTransferSecurityLevelOfCollection(address(this), level); validator.setOperatorWhitelistOfCollection(address(this), operatorWhitelistId); validator.setPermittedContractReceiverAllowlistOfCollection(address(this), permittedContractReceiversAllowlistId); } /** * @notice Sets the transfer validator for the token contract. * * @dev Throws when provided validator contract is not the zero address and doesn't support * the ICreatorTokenTransferValidator interface. * @dev Throws when the caller is not the contract owner. * * @dev <h4>Postconditions:</h4> * 1. The transferValidator address is updated. * 2. The `TransferValidatorUpdated` event is emitted. * * @param transferValidator_ The address of the transfer validator contract. */ function setTransferValidator(address transferValidator_) public { _requireCallerIsContractOwner(); bool isValidTransferValidator = false; if(transferValidator_.code.length > 0) { try IERC165(transferValidator_).supportsInterface(type(ICreatorTokenTransferValidator).interfaceId) returns (bool supportsInterface) { isValidTransferValidator = supportsInterface; } catch {} } if(transferValidator_ != address(0) && !isValidTransferValidator) { revert CreatorTokenBase__InvalidTransferValidatorContract(); } emit TransferValidatorUpdated(address(transferValidator), transferValidator_); transferValidator = ICreatorTokenTransferValidator(transferValidator_); } /** * @notice Returns the transfer validator contract address for this token contract. */ function getTransferValidator() public view override returns (ICreatorTokenTransferValidator) { return transferValidator; } /** * @notice Returns the security policy for this token contract, which includes: * Transfer security level, operator whitelist id, permitted contract receiver allowlist id. */ function getSecurityPolicy() public view override returns (CollectionSecurityPolicy memory) { if (address(transferValidator) != address(0)) { return transferValidator.getCollectionSecurityPolicy(address(this)); } return CollectionSecurityPolicy({ transferSecurityLevel: TransferSecurityLevels.Zero, operatorWhitelistId: 0, permittedContractReceiversId: 0 }); } /** * @notice Returns the list of all whitelisted operators for this token contract. * @dev This can be an expensive call and should only be used in view-only functions. */ function getWhitelistedOperators() public view override returns (address[] memory) { if (address(transferValidator) != address(0)) { return transferValidator.getWhitelistedOperators( transferValidator.getCollectionSecurityPolicy(address(this)).operatorWhitelistId); } return new address[](0); } /** * @notice Returns the list of permitted contract receivers for this token contract. * @dev This can be an expensive call and should only be used in view-only functions. */ function getPermittedContractReceivers() public view override returns (address[] memory) { if (address(transferValidator) != address(0)) { return transferValidator.getPermittedContractReceivers( transferValidator.getCollectionSecurityPolicy(address(this)).permittedContractReceiversId); } return new address[](0); } /** * @notice Checks if an operator is whitelisted for this token contract. * @param operator The address of the operator to check. */ function isOperatorWhitelisted(address operator) public view override returns (bool) { if (address(transferValidator) != address(0)) { return transferValidator.isOperatorWhitelisted( transferValidator.getCollectionSecurityPolicy(address(this)).operatorWhitelistId, operator); } return false; } /** * @notice Checks if a contract receiver is permitted for this token contract. * @param receiver The address of the receiver to check. */ function isContractReceiverPermitted(address receiver) public view override returns (bool) { if (address(transferValidator) != address(0)) { return transferValidator.isContractReceiverPermitted( transferValidator.getCollectionSecurityPolicy(address(this)).permittedContractReceiversId, receiver); } return false; } /** * @notice Determines if a transfer is allowed based on the token contract's security policy. Use this function * to simulate whether or not a transfer made by the specified `caller` from the `from` address to the `to` * address would be allowed by this token's security policy. * * @notice This function only checks the security policy restrictions and does not check whether token ownership * or approvals are in place. * * @param caller The address of the simulated caller. * @param from The address of the sender. * @param to The address of the receiver. * @return True if the transfer is allowed, false otherwise. */ function isTransferAllowed(address caller, address from, address to) public view override returns (bool) { if (address(transferValidator) != address(0)) { try transferValidator.applyCollectionTransferPolicy(caller, from, to) { return true; } catch { return false; } } return true; } /** * @dev Pre-validates a token transfer, reverting if the transfer is not allowed by this token's security policy. * Inheriting contracts are responsible for overriding the _beforeTokenTransfer function, or its equivalent * and calling _validateBeforeTransfer so that checks can be properly applied during token transfers. * * @dev Throws when the transfer doesn't comply with the collection's transfer policy, if the transferValidator is * set to a non-zero address. * * @param caller The address of the caller. * @param from The address of the sender. * @param to The address of the receiver. */ function _preValidateTransfer( address caller, address from, address to, uint256 /*tokenId*/, uint256 /*value*/) internal virtual override { if (address(transferValidator) != address(0)) { transferValidator.applyCollectionTransferPolicy(caller, from, to); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; enum AllowlistTypes { Operators, PermittedContractReceivers } enum ReceiverConstraints { None, NoCode, EOA } enum CallerConstraints { None, OperatorWhitelistEnableOTC, OperatorWhitelistDisableOTC } enum StakerConstraints { None, CallerIsTxOrigin, EOA } enum TransferSecurityLevels { Zero, One, Two, Three, Four, Five, Six } struct TransferSecurityPolicy { CallerConstraints callerConstraints; ReceiverConstraints receiverConstraints; } struct CollectionSecurityPolicy { TransferSecurityLevels transferSecurityLevel; uint120 operatorWhitelistId; uint120 permittedContractReceiversId; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/Context.sol"; /** * @title TransferValidation * @author Limit Break, Inc. * @notice A mix-in that can be combined with ERC-721 contracts to provide more granular hooks. * Openzeppelin's ERC721 contract only provides hooks for before and after transfer. This allows * developers to validate or customize transfers within the context of a mint, a burn, or a transfer. */ abstract contract TransferValidation is Context { error ShouldNotMintToBurnAddress(); /// @dev Inheriting contracts should call this function in the _beforeTokenTransfer function to get more granular hooks. function _validateBeforeTransfer(address from, address to, uint256 tokenId) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _preValidateMint(_msgSender(), to, tokenId, msg.value); } else if(toZeroAddress) { _preValidateBurn(_msgSender(), from, tokenId, msg.value); } else { _preValidateTransfer(_msgSender(), from, to, tokenId, msg.value); } } /// @dev Inheriting contracts should call this function in the _afterTokenTransfer function to get more granular hooks. function _validateAfterTransfer(address from, address to, uint256 tokenId) internal virtual { bool fromZeroAddress = from == address(0); bool toZeroAddress = to == address(0); if(fromZeroAddress && toZeroAddress) { revert ShouldNotMintToBurnAddress(); } else if(fromZeroAddress) { _postValidateMint(_msgSender(), to, tokenId, msg.value); } else if(toZeroAddress) { _postValidateBurn(_msgSender(), from, tokenId, msg.value); } else { _postValidateTransfer(_msgSender(), from, to, tokenId, msg.value); } } /// @dev Optional validation hook that fires before a mint function _preValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a mint function _postValidateMint(address caller, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a burn function _preValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a burn function _postValidateBurn(address caller, address from, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires before a transfer function _preValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {} /// @dev Optional validation hook that fires after a transfer function _postValidateTransfer(address caller, address from, address to, uint256 tokenId, uint256 value) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "../utils/introspection/IERC165.sol"; /** * @dev Interface for the NFT Royalty Standard. * * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal * support for royalty payments across all NFT marketplaces and ecosystem participants. * * _Available since v4.5._ */ interface IERC2981 is IERC165 { /** * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of * exchange. The royalty amount is denominated and should be paid in that same unit of exchange. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); }
// 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); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@limitbreak/creator-token-contracts/contracts/access/OwnablePermissions.sol"; import "@openzeppelin/contracts/interfaces/IERC2981.sol"; import "@openzeppelin/contracts/utils/introspection/ERC165.sol"; /** * @title MutableMinterRoyaltiesBase * @author Limit Break, Inc. * @dev Base functionality of an NFT mix-in contract implementing programmable royalties for minters, allowing the minter of each token ID to * update the royalty fee percentage. */ abstract contract MutableMinterRoyaltiesBase is IERC2981, ERC165 { error MutableMinterRoyalties__MinterCannotBeZeroAddress(); error MutableMinterRoyalties__MinterHasAlreadyBeenAssignedToTokenId(); error MutableMinterRoyalties__OnlyMinterCanChangeRoyaltyFee(); error MutableMinterRoyalties__RoyaltyFeeWillExceedSalePrice(); error MutableMinterRoyalties__RoyaltyFeeGreaterThanMaximumAllowed(); struct RoyaltyInfo { address receiver; uint96 royaltyFraction; } uint96 public constant CREATOR_MAX_ROYALTY = 1000; // Can be set to a maximum of 10% uint96 public constant FEE_DENOMINATOR = 10_000; uint96 private _defaultRoyaltyFeeNumerator; mapping (uint256 => RoyaltyInfo) private _tokenRoyaltyInfo; /// @dev Emitted when royalty is set. event RoyaltySet(uint256 indexed tokenId, address indexed receiver, uint96 feeNumerator); /** * @notice Allows the minter to update the royalty fee percentage for a specific token ID. * @dev The caller must be the minter of the specified token ID. * @dev Throws when royaltyFeeNumerator is greater than FEE_DENOMINATOR * @dev Throws when the caller is not the minter of the specified token ID * @param tokenId The token ID * @param royaltyFeeNumerator The new royalty fee numerator */ function setRoyaltyFee(uint256 tokenId, uint96 royaltyFeeNumerator) external { if (royaltyFeeNumerator > CREATOR_MAX_ROYALTY) { revert MutableMinterRoyalties__RoyaltyFeeGreaterThanMaximumAllowed(); } RoyaltyInfo storage royalty = _tokenRoyaltyInfo[tokenId]; if (royalty.receiver != msg.sender) { revert MutableMinterRoyalties__OnlyMinterCanChangeRoyaltyFee(); } royalty.royaltyFraction = royaltyFeeNumerator; emit RoyaltySet(tokenId, msg.sender, royaltyFeeNumerator); } /** * @notice Indicates whether the contract implements the specified interface. * @dev Overrides supportsInterface in ERC165. * @param interfaceId The interface id * @return true if the contract implements the specified interface, false otherwise */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) { return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId); } function defaultRoyaltyFeeNumerator() public virtual view returns (uint96) { return _defaultRoyaltyFeeNumerator; } /** * @notice Returns the royalty info for a given token ID and sale price. * @dev Implements the IERC2981 interface. * @param tokenId The token ID * @param salePrice The sale price * @return receiver The minter's address * @return royaltyAmount The royalty amount */ function royaltyInfo( uint256 tokenId, uint256 salePrice ) external view override returns (address receiver, uint256 royaltyAmount) { RoyaltyInfo memory royalty = _tokenRoyaltyInfo[tokenId]; if (royalty.receiver == address(0)) { royalty.royaltyFraction = defaultRoyaltyFeeNumerator(); } return (royalty.receiver, (salePrice * royalty.royaltyFraction) / FEE_DENOMINATOR); } /** * @dev Sets the minter's address and royalty fraction for the specified token ID in the _tokenRoyaltyInfo mapping * when a new token is minted. * @dev Throws when minter is the zero address * @dev Throws when the minter has already been assigned to the specified token ID * @param minter The address of the minter * @param tokenId The token ID */ function _onMinted(address minter, uint256 tokenId) internal { if (minter == address(0)) { revert MutableMinterRoyalties__MinterCannotBeZeroAddress(); } if (_tokenRoyaltyInfo[tokenId].receiver != address(0)) { revert MutableMinterRoyalties__MinterHasAlreadyBeenAssignedToTokenId(); } uint96 defaultRoyaltyFeeNumerator_ = defaultRoyaltyFeeNumerator(); _tokenRoyaltyInfo[tokenId] = RoyaltyInfo({ receiver: minter, royaltyFraction: defaultRoyaltyFeeNumerator_ }); emit RoyaltySet(tokenId, minter, defaultRoyaltyFeeNumerator_); } /** * @dev Removes the royalty information from the _tokenRoyaltyInfo mapping for the specified token ID when a token * is burned. * @param tokenId The token ID */ function _onBurned(uint256 tokenId) internal { delete _tokenRoyaltyInfo[tokenId]; emit RoyaltySet(tokenId, address(0), defaultRoyaltyFeeNumerator()); } function _setDefaultRoyaltyFee(uint96 defaultRoyaltyFeeNumerator_) internal { if(defaultRoyaltyFeeNumerator_ > FEE_DENOMINATOR) { revert MutableMinterRoyalties__RoyaltyFeeWillExceedSalePrice(); } _defaultRoyaltyFeeNumerator = defaultRoyaltyFeeNumerator_; } } /** * @title MutableMinterRoyalties * @author Limit Break, Inc. * @notice Constructable MutableMinterRoyalties Contract implementation. */ abstract contract MutableMinterRoyalties is MutableMinterRoyaltiesBase { uint96 private immutable _defaultRoyaltyFeeNumeratorImmutable; constructor(uint96 defaultRoyaltyFeeNumerator_) { _setDefaultRoyaltyFee(defaultRoyaltyFeeNumerator_); _defaultRoyaltyFeeNumeratorImmutable = defaultRoyaltyFeeNumerator_; } function defaultRoyaltyFeeNumerator() public view override returns (uint96) { return _defaultRoyaltyFeeNumeratorImmutable; } } /** * @title MutableMinterRoyaltiesInitializable * @author Limit Break, Inc. * @notice Initializable MutableMinterRoyalties Contract implementation to allow for EIP-1167 clones. */ abstract contract MutableMinterRoyaltiesInitializable is OwnablePermissions, MutableMinterRoyaltiesBase { error MutableMinterRoyaltiesInitializable__DefaultMinterRoyaltyFeeAlreadyInitialized(); bool private _defaultMinterRoyaltyFeeInitialized; function initializeDefaultMinterRoyaltyFee(uint96 defaultRoyaltyFeeNumerator_) public { _requireCallerIsContractOwner(); if(_defaultMinterRoyaltyFeeInitialized) { revert MutableMinterRoyaltiesInitializable__DefaultMinterRoyaltyFeeAlreadyInitialized(); } _defaultMinterRoyaltyFeeInitialized = true; _setDefaultRoyaltyFee(defaultRoyaltyFeeNumerator_); } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.3 // Creator: Chiru Labs pragma solidity ^0.8.4; import './IERC721A.sol'; /** * @dev Interface of ERC721 token receiver. */ interface ERC721A__IERC721Receiver { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } /** * @title ERC721A * * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721) * Non-Fungible Token Standard, including the Metadata extension. * Optimized for lower gas during batch mints. * * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...) * starting from `_startTokenId()`. * * Assumptions: * * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply. * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256). */ contract ERC721A is IERC721A { // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364). struct TokenApprovalRef { address value; } // ============================================================= // CONSTANTS // ============================================================= // Mask of an entry in packed address data. uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1; // The bit position of `numberMinted` in packed address data. uint256 private constant _BITPOS_NUMBER_MINTED = 64; // The bit position of `numberBurned` in packed address data. uint256 private constant _BITPOS_NUMBER_BURNED = 128; // The bit position of `aux` in packed address data. uint256 private constant _BITPOS_AUX = 192; // Mask of all 256 bits in packed address data except the 64 bits for `aux`. uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1; // The bit position of `startTimestamp` in packed ownership. uint256 private constant _BITPOS_START_TIMESTAMP = 160; // The bit mask of the `burned` bit in packed ownership. uint256 private constant _BITMASK_BURNED = 1 << 224; // The bit position of the `nextInitialized` bit in packed ownership. uint256 private constant _BITPOS_NEXT_INITIALIZED = 225; // The bit mask of the `nextInitialized` bit in packed ownership. uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225; // The bit position of `extraData` in packed ownership. uint256 private constant _BITPOS_EXTRA_DATA = 232; // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`. uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1; // The mask of the lower 160 bits for addresses. uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1; // The maximum `quantity` that can be minted with {_mintERC2309}. // This limit is to prevent overflows on the address data entries. // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309} // is required to cause an overflow, which is unrealistic. uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000; // The `Transfer` event signature is given by: // `keccak256(bytes("Transfer(address,address,uint256)"))`. bytes32 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; // ============================================================= // STORAGE // ============================================================= // The next token ID to be minted. uint256 private _currentIndex; // The number of tokens burned. uint256 private _burnCounter; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to ownership details // An empty struct value does not necessarily mean the token is unowned. // See {_packedOwnershipOf} implementation for details. // // Bits Layout: // - [0..159] `addr` // - [160..223] `startTimestamp` // - [224] `burned` // - [225] `nextInitialized` // - [232..255] `extraData` mapping(uint256 => uint256) private _packedOwnerships; // Mapping owner address to address data. // // Bits Layout: // - [0..63] `balance` // - [64..127] `numberMinted` // - [128..191] `numberBurned` // - [192..255] `aux` mapping(address => uint256) private _packedAddressData; // Mapping from token ID to approved address. mapping(uint256 => TokenApprovalRef) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; // ============================================================= // CONSTRUCTOR // ============================================================= constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _currentIndex = _startTokenId(); } // ============================================================= // TOKEN COUNTING OPERATIONS // ============================================================= /** * @dev Returns the starting token ID. * To change the starting token ID, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Returns the next token ID to be minted. */ function _nextTokenId() internal view virtual returns (uint256) { return _currentIndex; } /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() public view virtual override returns (uint256) { // Counter underflow is impossible as _burnCounter cannot be incremented // more than `_currentIndex - _startTokenId()` times. unchecked { return _currentIndex - _burnCounter - _startTokenId(); } } /** * @dev Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view virtual returns (uint256) { // Counter underflow is impossible as `_currentIndex` does not decrement, // and it is initialized to `_startTokenId()`. unchecked { return _currentIndex - _startTokenId(); } } /** * @dev Returns the total number of tokens burned. */ function _totalBurned() internal view virtual returns (uint256) { return _burnCounter; } // ============================================================= // ADDRESS DATA OPERATIONS // ============================================================= /** * @dev Returns the number of tokens in `owner`'s account. */ function balanceOf(address owner) public view virtual override returns (uint256) { if (owner == address(0)) revert BalanceQueryForZeroAddress(); return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return uint64(_packedAddressData[owner] >> _BITPOS_AUX); } /** * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). * If there are multiple variables, please pack them into a uint64. */ function _setAux(address owner, uint64 aux) internal virtual { uint256 packed = _packedAddressData[owner]; uint256 auxCasted; // Cast `aux` with assembly to avoid redundant masking. assembly { auxCasted := aux } packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX); _packedAddressData[owner] = packed; } // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { // The interface IDs are constants representing the first 4 bytes // of the XOR of all function selectors in the interface. // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165) // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`) return interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165. interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721. interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata. } // ============================================================= // IERC721Metadata // ============================================================= /** * @dev Returns the token collection name. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the token collection symbol. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { if (!_exists(tokenId)) revert URIQueryForNonexistentToken(); string memory baseURI = _baseURI(); return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : ''; } /** * @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, it can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ''; } // ============================================================= // OWNERSHIPS OPERATIONS // ============================================================= /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { return address(uint160(_packedOwnershipOf(tokenId))); } /** * @dev Gas spent here starts off proportional to the maximum mint batch size. * It gradually moves to O(1) as tokens get transferred around over time. */ function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnershipOf(tokenId)); } /** * @dev Returns the unpacked `TokenOwnership` struct at `index`. */ function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnerships[index]); } /** * @dev Initializes the ownership slot minted at `index` for efficiency purposes. */ function _initializeOwnershipAt(uint256 index) internal virtual { if (_packedOwnerships[index] == 0) { _packedOwnerships[index] = _packedOwnershipOf(index); } } /** * Returns the packed ownership data of `tokenId`. */ function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) { uint256 curr = tokenId; unchecked { if (_startTokenId() <= curr) if (curr < _currentIndex) { uint256 packed = _packedOwnerships[curr]; // If not burned. if (packed & _BITMASK_BURNED == 0) { // Invariant: // There will always be an initialized ownership slot // (i.e. `ownership.addr != address(0) && ownership.burned == false`) // before an unintialized ownership slot // (i.e. `ownership.addr == address(0) && ownership.burned == false`) // Hence, `curr` will not underflow. // // We can directly compare the packed value. // If the address is zero, packed will be zero. while (packed == 0) { packed = _packedOwnerships[--curr]; } return packed; } } } revert OwnerQueryForNonexistentToken(); } /** * @dev Returns the unpacked `TokenOwnership` struct from `packed`. */ function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) { ownership.addr = address(uint160(packed)); ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP); ownership.burned = packed & _BITMASK_BURNED != 0; ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA); } /** * @dev Packs ownership data into a single uint256. */ function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`. result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags)) } } /** * @dev Returns the `nextInitialized` flag set if `quantity` equals 1. */ function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) { // For branchless setting of the `nextInitialized` flag. assembly { // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`. result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1)) } } // ============================================================= // APPROVAL OPERATIONS // ============================================================= /** * @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) public payable virtual override { address owner = ownerOf(tokenId); if (_msgSenderERC721A() != owner) if (!isApprovedForAll(owner, _msgSenderERC721A())) { revert ApprovalCallerNotOwnerNorApproved(); } _tokenApprovals[tokenId].value = to; emit Approval(owner, to, tokenId); } /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken(); return _tokenApprovals[tokenId].value; } /** * @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) public virtual override { _operatorApprovals[_msgSenderERC721A()][operator] = approved; emit ApprovalForAll(_msgSenderERC721A(), operator, approved); } /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @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. See {_mint}. */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _startTokenId() <= tokenId && tokenId < _currentIndex && // If within bounds, _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned. } /** * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`. */ function _isSenderApprovedOrOwner( address approvedAddress, address owner, address msgSender ) private pure returns (bool result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean. msgSender := and(msgSender, _BITMASK_ADDRESS) // `msgSender == owner || msgSender == approvedAddress`. result := or(eq(msgSender, owner), eq(msgSender, approvedAddress)) } } /** * @dev Returns the storage slot and value for the approved address of `tokenId`. */ function _getApprovedSlotAndAddress(uint256 tokenId) private view returns (uint256 approvedAddressSlot, address approvedAddress) { TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId]; // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`. assembly { approvedAddressSlot := tokenApproval.slot approvedAddress := sload(approvedAddressSlot) } } // ============================================================= // TRANSFER OPERATIONS // ============================================================= /** * @dev Transfers `tokenId` from `from` to `to`. * * 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 ) public payable virtual override { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner(); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); if (to == address(0)) revert TransferToZeroAddress(); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // We can directly increment and decrement the balances. --_packedAddressData[from]; // Updates: `balance -= 1`. ++_packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( to, _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public payable virtual override { safeTransferFrom(from, to, tokenId, ''); } /** * @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 memory _data ) public payable virtual override { transferFrom(from, to, tokenId); if (to.code.length != 0) if (!_checkContractOnERC721Received(from, to, tokenId, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } /** * @dev Hook that is called before a set of serially-ordered token IDs * are about to be transferred. This includes minting. * And also called before burning one token. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _beforeTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Hook that is called after a set of serially-ordered token IDs * have been transferred. This includes minting. * And also called after one token has been burned. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been * transferred to `to`. * - When `from` is zero, `tokenId` has been minted for `to`. * - When `to` is zero, `tokenId` has been burned by `from`. * - `from` and `to` are never both zero. */ function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract. * * `from` - Previous owner of the given token ID. * `to` - Target address that will receive the token. * `tokenId` - Token ID to be transferred. * `_data` - Optional data to send along with the call. * * Returns whether the call correctly returned the expected magic value. */ function _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns ( bytes4 retval ) { return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert TransferToNonERC721ReceiverImplementer(); } else { assembly { revert(add(32, reason), mload(reason)) } } } } // ============================================================= // MINT OPERATIONS // ============================================================= /** * @dev Mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {Transfer} event for each mint. */ function _mint(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (quantity == 0) revert MintZeroQuantity(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // `balance` and `numberMinted` have a maximum limit of 2**64. // `tokenId` has a maximum limit of 2**256. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); uint256 toMasked; uint256 end = startTokenId + quantity; // Use assembly to loop and emit the `Transfer` event for gas savings. // The duplicated `log4` removes an extra check and reduces stack juggling. // The assembly, together with the surrounding Solidity code, have been // delicately arranged to nudge the compiler into producing optimized opcodes. assembly { // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. toMasked := and(to, _BITMASK_ADDRESS) // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. 0, // `address(0)`. toMasked, // `to`. startTokenId // `tokenId`. ) // The `iszero(eq(,))` check ensures that large values of `quantity` // that overflows uint256 will make the loop run out of gas. // The compiler will optimize the `iszero` away for performance. for { let tokenId := add(startTokenId, 1) } iszero(eq(tokenId, end)) { tokenId := add(tokenId, 1) } { // Emit the `Transfer` event. Similar to above. log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId) } } if (toMasked == 0) revert MintToZeroAddress(); _currentIndex = end; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * This function is intended for efficient minting only during contract creation. * * It emits only one {ConsecutiveTransfer} as defined in * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309), * instead of a sequence of {Transfer} event(s). * * Calling this function outside of contract creation WILL make your contract * non-compliant with the ERC721 standard. * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309 * {ConsecutiveTransfer} event is only permissible during contract creation. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {ConsecutiveTransfer} event. */ function _mintERC2309(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (to == address(0)) revert MintToZeroAddress(); if (quantity == 0) revert MintZeroQuantity(); if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are unrealistic due to the above check for `quantity` to be below the limit. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to); _currentIndex = startTokenId + quantity; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Safely mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called for each safe transfer. * - `quantity` must be greater than 0. * * See {_mint}. * * Emits a {Transfer} event for each mint. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal virtual { _mint(to, quantity); unchecked { if (to.code.length != 0) { uint256 end = _currentIndex; uint256 index = end - quantity; do { if (!_checkContractOnERC721Received(address(0), to, index++, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } while (index < end); // Reentrancy protection. if (_currentIndex != end) revert(); } } } /** * @dev Equivalent to `_safeMint(to, quantity, '')`. */ function _safeMint(address to, uint256 quantity) internal virtual { _safeMint(to, quantity, ''); } // ============================================================= // BURN OPERATIONS // ============================================================= /** * @dev Equivalent to `_burn(tokenId, false)`. */ function _burn(uint256 tokenId) internal virtual { _burn(tokenId, false); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId, bool approvalCheck) internal virtual { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); address from = address(uint160(prevOwnershipPacked)); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); if (approvalCheck) { // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // Updates: // - `balance -= 1`. // - `numberBurned += 1`. // // We can directly decrement the balance, and increment the number burned. // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`. _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1; // Updates: // - `address` to the last owner. // - `startTimestamp` to the timestamp of burning. // - `burned` to `true`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( from, (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, address(0), tokenId, 1); // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times. unchecked { _burnCounter++; } } // ============================================================= // EXTRA DATA OPERATIONS // ============================================================= /** * @dev Directly sets the extra data for the ownership data `index`. */ function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual { uint256 packed = _packedOwnerships[index]; if (packed == 0) revert OwnershipNotInitializedForExtraData(); uint256 extraDataCasted; // Cast `extraData` with assembly to avoid redundant masking. assembly { extraDataCasted := extraData } packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA); _packedOwnerships[index] = packed; } /** * @dev Called during each token transfer to set the 24bit `extraData` field. * Intended to be overridden by the cosumer contract. * * `previousExtraData` - the value of `extraData` before transfer. * * 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, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _extraData( address from, address to, uint24 previousExtraData ) internal view virtual returns (uint24) {} /** * @dev Returns the next extra data for the packed ownership data. * The returned result is shifted into position. */ function _nextExtraData( address from, address to, uint256 prevOwnershipPacked ) private view returns (uint256) { uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA); return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA; } // ============================================================= // OTHER OPERATIONS // ============================================================= /** * @dev Returns the message sender (defaults to `msg.sender`). * * If you are writing GSN compatible contracts, you need to override this function. */ function _msgSenderERC721A() internal view virtual returns (address) { return msg.sender; } /** * @dev Converts a uint256 to its ASCII string decimal representation. */ function _toString(uint256 value) internal pure virtual returns (string memory str) { assembly { // The maximum value of a uint256 contains 78 digits (1 byte per digit), but // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned. // We will need 1 word for the trailing zeros padding, 1 word for the length, // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0. let m := add(mload(0x40), 0xa0) // Update the free memory pointer to allocate. mstore(0x40, m) // Assign the `str` to the end. str := sub(m, 0x20) // Zeroize the slot after the string. mstore(str, 0) // Cache the end of the memory to calculate the length later. let end := str // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 1) // Write the character to the pointer. // The ASCII index of the '0' character is 48. mstore8(str, add(48, mod(temp, 10))) // Keep dividing `temp` until zero. temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } let length := sub(end, str) // Move the pointer 32 bytes leftwards to make room for the length. str := sub(str, 0x20) // Store the length. mstore(str, length) } } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.3 // Creator: Chiru Labs pragma solidity ^0.8.4; /** * @dev Interface of ERC721A. */ interface IERC721A { /** * The caller must own the token or be an approved operator. */ error ApprovalCallerNotOwnerNorApproved(); /** * The token does not exist. */ error ApprovalQueryForNonexistentToken(); /** * Cannot query the balance for the zero address. */ error BalanceQueryForZeroAddress(); /** * Cannot mint to the zero address. */ error MintToZeroAddress(); /** * The quantity of tokens minted must be more than zero. */ error MintZeroQuantity(); /** * The token does not exist. */ error OwnerQueryForNonexistentToken(); /** * The caller must own the token or be an approved operator. */ error TransferCallerNotOwnerNorApproved(); /** * The token must be owned by `from`. */ error TransferFromIncorrectOwner(); /** * Cannot safely transfer to a contract that does not implement the * ERC721Receiver interface. */ error TransferToNonERC721ReceiverImplementer(); /** * Cannot transfer to the zero address. */ error TransferToZeroAddress(); /** * The token does not exist. */ error URIQueryForNonexistentToken(); /** * The `quantity` minted with ERC2309 exceeds the safety limit. */ error MintERC2309QuantityExceedsLimit(); /** * The `extraData` cannot be set on an unintialized ownership slot. */ error OwnershipNotInitializedForExtraData(); // ============================================================= // STRUCTS // ============================================================= struct TokenOwnership { // The address of the owner. address addr; // Stores the start time of ownership with minimal overhead for tokenomics. uint64 startTimestamp; // Whether the token has been burned. bool burned; // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}. uint24 extraData; } // ============================================================= // TOKEN COUNTERS // ============================================================= /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() external view returns (uint256); // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); // ============================================================= // IERC721 // ============================================================= /** * @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, bytes calldata data ) external payable; /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external payable; /** * @dev Transfers `tokenId` 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 payable; /** * @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 payable; /** * @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 the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @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); // ============================================================= // IERC721Metadata // ============================================================= /** * @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); // ============================================================= // IERC2309 // ============================================================= /** * @dev Emitted when tokens in `fromTokenId` to `toTokenId` * (inclusive) is transferred from `from` to `to`, as defined in the * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard. * * See {_mintERC2309} for more details. */ event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to); }
{ "optimizer": { "enabled": false, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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TransferSecurityLevels","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_TRANSFER_VALIDATOR","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"FEE_DENOMINATOR","outputs":[{"internalType":"uint96","name":"","type":"uint96"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_TOKENS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ROYALTY_PERCENT","outputs":[{"internalType":"uint96","name":"","type":"uint96"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TOKEN_RESERVE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"defaultRoyaltyFeeNumerator","outputs":[{"internalType":"uint96","name":"","type":"uint96"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPermittedContractReceivers","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getSecurityPolicy","outputs":[{"components":[{"internalType":"enum TransferSecurityLevels","name":"transferSecurityLevel","type":"uint8"},{"internalType":"uint120","name":"operatorWhitelistId","type":"uint120"},{"internalType":"uint120","name":"permittedContractReceiversId","type":"uint120"}],"internalType":"struct CollectionSecurityPolicy","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getTransferValidator","outputs":[{"internalType":"contract ICreatorTokenTransferValidator","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getWhitelistedOperators","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"isContractReceiverPermitted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"isOperatorWhitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"caller","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"}],"name":"isTransferAllowed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTokenPurchase","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_numberOfTokens","type":"uint256"}],"name":"publicMint","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"publicMintActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"publicMintPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"remainingSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"removeTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_reserveAmount","type":"uint256"}],"name":"reserveTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint256","name":"royaltyAmount","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newMax","type":"uint256"}],"name":"setMaxSupply","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newMaxTokenPurchase","type":"uint256"}],"name":"setMaxTokenPurchase","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newPrice","type":"uint256"}],"name":"setPublicMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint96","name":"royaltyFeeNumerator","type":"uint96"}],"name":"setRoyaltyFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum TransferSecurityLevels","name":"level","type":"uint8"},{"internalType":"uint120","name":"operatorWhitelistId","type":"uint120"},{"internalType":"uint120","name":"permittedContractReceiversAllowlistId","type":"uint120"}],"name":"setToCustomSecurityPolicy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"validator","type":"address"},{"internalType":"enum TransferSecurityLevels","name":"level","type":"uint8"},{"internalType":"uint120","name":"operatorWhitelistId","type":"uint120"},{"internalType":"uint120","name":"permittedContractReceiversAllowlistId","type":"uint120"}],"name":"setToCustomValidatorAndSecurityPolicy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"setToDefaultSecurityPolicy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newTokenReserve","type":"uint256"}],"name":"setTokenReserve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"string","name":"_uri","type":"string"}],"name":"setTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"transferValidator_","type":"address"}],"name":"setTransferValidator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"togglePublicMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawBalance","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
POL | Polygon (POL) | 100.00% | $0.687643 | 1,250 | $859.55 |
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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.