Feature Tip: Add private address tag to any address under My Name Tag !
Overview
ETH Balance
0 ETH
Eth Value
$0.00More Info
Private Name Tags
ContractCreator
TokenTracker
Latest 9 from a total of 9 transactions
Transaction Hash |
Method
|
Block
|
From
|
To
|
|||||
---|---|---|---|---|---|---|---|---|---|
Mint | 14390414 | 1052 days ago | IN | 0 ETH | 0.003316 | ||||
Mint | 14390406 | 1052 days ago | IN | 0 ETH | 0.00363581 | ||||
Mint | 14322213 | 1062 days ago | IN | 0 ETH | 0.00977906 | ||||
Mint | 14322213 | 1062 days ago | IN | 0 ETH | 0.00962447 | ||||
Mint | 14322212 | 1062 days ago | IN | 0 ETH | 0.00909189 | ||||
Mint | 14322211 | 1062 days ago | IN | 0 ETH | 0.00914998 | ||||
Mint | 14322208 | 1062 days ago | IN | 0 ETH | 0.00812435 | ||||
Mint | 14252686 | 1073 days ago | IN | 0 ETH | 0.06713328 | ||||
Transfer | 13876444 | 1131 days ago | IN | 0.08 ETH | 0.00209726 |
View more zero value Internal Transactions in Advanced View mode
Advanced mode:
Loading...
Loading
Contract Source Code Verified (Exact Match)
Contract Name:
CRW
Compiler Version
v0.8.10+commit.fc410830
Optimization Enabled:
Yes with 20 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// TNCX-License-Identifier: MIT pragma solidity ^0.8.0; import "openzeppelin-solidity/contracts/access/Ownable.sol"; import "openzeppelin-solidity/contracts/utils/Strings.sol"; import "./IFactoryERC721.sol"; import "./CRY.sol"; contract CRW is FactoryERC721, Ownable { using Strings for string; event Transfer( address indexed from, address indexed to, uint256 indexed tokenId ); address public proxyRegistryAddress; address public nftAddress; string public baseURI = "https://api.cryppo.io/factory/"; uint256 MAX_SUPPLY = 3777; //MAX SUPPLY uint256 NUM_OPTIONS = 5; uint256 SINGLE_OPTION = 0; constructor(address _proxyRegistryAddress, address _nftAddress) { proxyRegistryAddress = _proxyRegistryAddress; nftAddress = _nftAddress; fireTransferEvents(address(0), owner()); } function name() override external pure returns (string memory) { return "Cryppo Factory"; } function symbol() override external pure returns (string memory) { return "CRW"; } function supportsFactoryInterface() override public pure returns (bool) { return true; } function numOptions() override public view returns (uint256) { return NUM_OPTIONS; } function transferOwnership(address newOwner) override public onlyOwner { address _prevOwner = owner(); super.transferOwnership(newOwner); fireTransferEvents(_prevOwner, newOwner); } function fireTransferEvents(address _from, address _to) private { for (uint256 i = 0; i < NUM_OPTIONS; i++) { emit Transfer(_from, _to, i); } } function mint(uint256 _optionId, address _toAddress) override public { // Must be sent from the owner proxy or owner. ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress); assert( address(proxyRegistry.proxies(owner())) == _msgSender() || owner() == _msgSender() ); require(canMint(_optionId)); CRY nft = CRY(nftAddress); if (_optionId == SINGLE_OPTION) { nft.mintTo(_toAddress); } else if (_optionId == 1) { for ( uint256 i = 0; i < 3; i++ ) { nft.mintTo(_toAddress); } } else if (_optionId == 2) { for ( uint256 i = 0; i < 5; i++ ) { nft.mintTo(_toAddress); } } else if (_optionId == 3) { for ( uint256 i = 0; i < 25; i++ ) { nft.mintTo(_toAddress); } } else if (_optionId == 4) { for ( uint256 i = 0; i < 50; i++ ) { nft.mintTo(_toAddress); } } } function canMint(uint256 _optionId) override public view returns (bool) { if (_optionId >= NUM_OPTIONS) { return false; } CRY nft = CRY(nftAddress); uint256 totalSupply = nft.totalSupply(); uint256 numItemsAllocated = 0; if (_optionId == SINGLE_OPTION) { numItemsAllocated = 1; } else if (_optionId == 1) { numItemsAllocated = 3; } else if (_optionId == 2) { numItemsAllocated = 5; } else if (_optionId == 3) { numItemsAllocated = 25; } else if (_optionId == 4) { numItemsAllocated = 50; } return totalSupply <= (MAX_SUPPLY - numItemsAllocated); } function tokenURI(uint256 _optionId) override external view returns (string memory) { return string(abi.encodePacked(baseURI, Strings.toString(_optionId))); } /** * Hack to get things to work automatically on OpenSea. * Use transferFrom so the frontend doesn't have to worry about different method names. */ function transferFrom( address _from, address _to, uint256 _tokenId ) public { mint(_tokenId, _to); } /** * Hack to get things to work automatically on OpenSea. * Use isApprovedForAll so the frontend doesn't have to worry about different method names. */ function isApprovedForAll(address _owner, address _operator) public view returns (bool) { if (owner() == _owner && _owner == _operator) { return true; } ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress); if ( owner() == _owner && address(proxyRegistry.proxies(_owner)) == _operator ) { return true; } return false; } /** * Hack to get things to work automatically on OpenSea. * Use isApprovedForAll so the frontend doesn't have to worry about different method names. */ function ownerOf(uint256 _tokenId) public view returns (address _owner) { return owner(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = 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"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping (uint256 => address) private _owners; // Mapping owner address to token count mapping (address => uint256) private _balances; // Mapping from token ID to approved address mapping (uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping (address => mapping (address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor (string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ''; } /** * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden * in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom(address from, address to, uint256 tokenId) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual { _mint(to, tokenId); require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer(address from, address to, uint256 tokenId) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { // solhint-disable-next-line no-inline-assembly 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` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 tokenId) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly 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"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (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"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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 // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant alphabet = "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] = alphabet[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./ERC721Tradable.sol"; contract CRY is ERC721Tradable { constructor(address _proxyRegistryAddress) ERC721Tradable("CRW", "CRY", _proxyRegistryAddress){} function baseTokenURI() override public pure returns (string memory) { return "https://api.cryppo.io/assets/"; } function contractURI() public pure returns (string memory) { return "https://api.cryppo.io/collection/"; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "openzeppelin-solidity/contracts/token/ERC721/ERC721.sol"; import "openzeppelin-solidity/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "openzeppelin-solidity/contracts/access/Ownable.sol"; import "openzeppelin-solidity/contracts/utils/math/SafeMath.sol"; import "openzeppelin-solidity/contracts/utils/Strings.sol"; import "./common/meta-transactions/ContentMixin.sol"; import "./common/meta-transactions/NativeMetaTransaction.sol"; contract OwnableDelegateProxy {} contract ProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } /** * @title ERC721Tradable * ERC721Tradable - ERC721 contract that whitelists a trading address, and has minting functionality. */ abstract contract ERC721Tradable is ContextMixin, ERC721Enumerable, NativeMetaTransaction, Ownable { using SafeMath for uint256; address proxyRegistryAddress; uint256 private _currentTokenId = 0; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress ) ERC721(_name, _symbol) { proxyRegistryAddress = _proxyRegistryAddress; _initializeEIP712(_name); } /** * @dev Mints a token to an address with a tokenURI. * @param _to address of the future owner of the token */ function mintTo(address _to) public onlyOwner { uint256 newTokenId = _getNextTokenId(); _mint(_to, newTokenId); _incrementTokenId(); } /** * @dev calculates the next token ID based on value of _currentTokenId * @return uint256 for the next token ID */ function _getNextTokenId() private view returns (uint256) { return _currentTokenId.add(1); } /** * @dev increments the value of _currentTokenId */ function _incrementTokenId() private { _currentTokenId++; } function baseTokenURI() virtual public pure returns (string memory); function tokenURI(uint256 _tokenId) override public pure returns (string memory) { return string(abi.encodePacked(baseTokenURI(), Strings.toString(_tokenId))); } /** * Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-less listings. */ function isApprovedForAll(address owner, address operator) override public view returns (bool) { // Whitelist OpenSea proxy contract for easy trading. ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress); if (address(proxyRegistry.proxies(owner)) == operator) { return true; } return super.isApprovedForAll(owner, operator); } /** * This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea. */ function _msgSender() internal override view returns (address sender) { return ContextMixin.msgSender(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * This is a generic factory contract that can be used to mint tokens. The configuration * for minting is specified by an _optionId, which can be used to delineate various * ways of minting. */ interface FactoryERC721 { /** * Returns the name of this factory. */ function name() external view returns (string memory); /** * Returns the symbol for this factory. */ function symbol() external view returns (string memory); /** * Number of options the factory supports. */ function numOptions() external view returns (uint256); /** * @dev Returns whether the option ID can be minted. Can return false if the developer wishes to * restrict a total supply per option ID (or overall). */ function canMint(uint256 _optionId) external view returns (bool); /** * @dev Returns a URL specifying some metadata about the option. This metadata can be of the * same structure as the ERC721 metadata. */ function tokenURI(uint256 _optionId) external view returns (string memory); /** * Indicates that this is a factory contract. Ideally would use EIP 165 supportsInterface() */ function supportsFactoryInterface() external view returns (bool); /** * @dev Mints asset(s) in accordance to a specific address with a particular "option". This should be * callable only by the contract owner or the owner's Wyvern Proxy (later universal login will solve this). * Options should also be delineated 0 - (numOptions() - 1) for convenient indexing. * @param _optionId the option id * @param _toAddress address of the future owner of the asset(s) */ function mint(uint256 _optionId, address _toAddress) external; }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; abstract contract ContextMixin { function msgSender() internal view returns (address payable sender) { if (msg.sender == address(this)) { bytes memory array = msg.data; uint256 index = msg.data.length; assembly { // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those. sender := and( mload(add(array, index)), 0xffffffffffffffffffffffffffffffffffffffff ) } } else { sender = payable(msg.sender); } return sender; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {Initializable} from "./Initializable.sol"; contract EIP712Base is Initializable { struct EIP712Domain { string name; string version; address verifyingContract; bytes32 salt; } string constant public ERC712_VERSION = "1"; bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256( bytes( "EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)" ) ); bytes32 internal domainSeperator; // supposed to be called once while initializing. // one of the contracts that inherits this contract follows proxy pattern // so it is not possible to do this in a constructor function _initializeEIP712( string memory name ) internal initializer { _setDomainSeperator(name); } function _setDomainSeperator(string memory name) internal { domainSeperator = keccak256( abi.encode( EIP712_DOMAIN_TYPEHASH, keccak256(bytes(name)), keccak256(bytes(ERC712_VERSION)), address(this), bytes32(getChainId()) ) ); } function getDomainSeperator() public view returns (bytes32) { return domainSeperator; } function getChainId() public view returns (uint256) { uint256 id; assembly { id := chainid() } return id; } /** * Accept message hash and returns hash message in EIP712 compatible form * So that it can be used to recover signer from signature signed using EIP712 formatted data * https://eips.ethereum.org/EIPS/eip-712 * "\\x19" makes the encoding deterministic * "\\x01" is the version byte to make it compatible to EIP-191 */ function toTypedMessageHash(bytes32 messageHash) internal view returns (bytes32) { return keccak256( abi.encodePacked("\x19\x01", getDomainSeperator(), messageHash) ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract Initializable { bool inited = false; modifier initializer() { require(!inited, "already inited"); _; inited = true; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import {SafeMath} from "openzeppelin-solidity/contracts/utils/math/SafeMath.sol"; import {EIP712Base} from "./EIP712Base.sol"; contract NativeMetaTransaction is EIP712Base { using SafeMath for uint256; bytes32 private constant META_TRANSACTION_TYPEHASH = keccak256( bytes( "MetaTransaction(uint256 nonce,address from,bytes functionSignature)" ) ); event MetaTransactionExecuted( address userAddress, address payable relayerAddress, bytes functionSignature ); mapping(address => uint256) nonces; /* * Meta transaction structure. * No point of including value field here as if user is doing value transfer then he has the funds to pay for gas * He should call the desired function directly in that case. */ struct MetaTransaction { uint256 nonce; address from; bytes functionSignature; } function executeMetaTransaction( address userAddress, bytes memory functionSignature, bytes32 sigR, bytes32 sigS, uint8 sigV ) public payable returns (bytes memory) { MetaTransaction memory metaTx = MetaTransaction({ nonce: nonces[userAddress], from: userAddress, functionSignature: functionSignature }); require( verify(userAddress, metaTx, sigR, sigS, sigV), "Signer and signature do not match" ); // increase nonce for user (to avoid re-use) nonces[userAddress] = nonces[userAddress].add(1); emit MetaTransactionExecuted( userAddress, payable(msg.sender), functionSignature ); // Append userAddress and relayer address at the end to extract it from calling context (bool success, bytes memory returnData) = address(this).call( abi.encodePacked(functionSignature, userAddress) ); require(success, "Function call not successful"); return returnData; } function hashMetaTransaction(MetaTransaction memory metaTx) internal pure returns (bytes32) { return keccak256( abi.encode( META_TRANSACTION_TYPEHASH, metaTx.nonce, metaTx.from, keccak256(metaTx.functionSignature) ) ); } function getNonce(address user) public view returns (uint256 nonce) { nonce = nonces[user]; } function verify( address signer, MetaTransaction memory metaTx, bytes32 sigR, bytes32 sigS, uint8 sigV ) internal view returns (bool) { require(signer != address(0), "NativeMetaTransaction: INVALID_SIGNER"); return signer == ecrecover( toTypedMessageHash(hashMetaTransaction(metaTx)), sigV, sigR, sigS ); } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 20 }, "evmVersion": "london", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_proxyRegistryAddress","type":"address"},{"internalType":"address","name":"_nftAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"}],"name":"canMint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"uint256","name":"_optionId","type":"uint256"},{"internalType":"address","name":"_toAddress","type":"address"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"nftAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"numOptions","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"_owner","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxyRegistryAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"supportsFactoryInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"_optionId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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
Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c1000000000000000000000000e61455af99765fd42d3e0f636ee55d35a4761449
-----Decoded View---------------
Arg [0] : _proxyRegistryAddress (address): 0xa5409ec958C83C3f309868babACA7c86DCB077c1
Arg [1] : _nftAddress (address): 0xE61455AF99765FD42d3E0F636EE55D35a4761449
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c1
Arg [1] : 000000000000000000000000e61455af99765fd42d3e0f636ee55d35a4761449
Loading...
Loading
Loading...
Loading
Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|
Loading...
Loading
[ Download: CSV Export ]
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.