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Latest 25 from a total of 1,296 transactions
Transaction Hash MethodBlockFromToTransact 21447683 2024-12-21 1:42:59 2 days ago 1734745379 IN 0 ETH$0.00 0.00841827 9.02916589 Transact 21447661 2024-12-21 1:38:35 2 days ago 1734745115 IN 0 ETH$0.00 0.0084783 8.80109225 Register Verifie... 21445423 2024-12-20 18:08:35 3 days ago 1734718115 IN 0 ETH$0.00 0.00116034 20.34337013 Transact With Ex... 21415063 2024-12-16 12:25:11 7 days ago 1734351911 IN 0 ETH$0.00 0.02529596 13.08607287 Transact 21356505 2024-12-08 8:13:59 15 days ago 1733645639 IN 0 ETH$0.00 0.00880127 9.37319141 Transact With Ex... 21356498 2024-12-08 8:12:35 15 days ago 1733645555 IN 0 ETH$0.00 0.01677977 9.57148719 Transact 21296522 2024-11-29 23:08:23 24 days ago 1732921703 IN 0 ETH$0.00 0.00885244 9.45607888 Transact With Ex... 21296517 2024-11-29 23:07:23 24 days ago 1732921643 IN 0 ETH$0.00 0.02414005 9.61524263 Transact With Ex... 21289484 2024-11-28 23:29:47 25 days ago 1732836587 IN 0 ETH$0.00 0.00736969 7.26989163 Set Hinkal Helpe... 21289313 2024-11-28 22:55:11 25 days ago 1732834511 IN 0 ETH$0.00 0.00024811 8.4939178 Transact With Ex... 21274173 2024-11-26 20:00:11 27 days ago 1732651211 IN 0 ETH$0.00 0.02166912 11.17129465 Transact 21272661 2024-11-26 14:56:59 27 days ago 1732633019 IN 0 ETH$0.00 0.02247146 23.84750979 Transact With Ex... 21272632 2024-11-26 14:51:11 27 days ago 1732632671 IN 0 ETH$0.00 0.06684392 27.24674506 Transact With Ex... 21234216 2024-11-21 6:08:11 32 days ago 1732169291 IN 0 ETH$0.00 0.02272581 10.27990109 Transact With Ex... 21234209 2024-11-21 6:06:47 32 days ago 1732169207 IN 0 ETH$0.00 0.01872247 10.92757525 Register Verifie... 21233857 2024-11-21 4:55:35 32 days ago 1732164935 IN 0 ETH$0.00 0.00227991 13.00394919 Register Externa... 21233677 2024-11-21 4:19:23 32 days ago 1732162763 IN 0 ETH$0.00 0.00050649 10.55570197 Transact 21230165 2024-11-20 16:33:23 33 days ago 1732120403 IN 0 ETH$0.00 0.02296513 24.53280599 Transact With Ex... 21230042 2024-11-20 16:08:47 33 days ago 1732118927 IN 0 ETH$0.00 0.04998014 20.37030254 Transact 21228572 2024-11-20 11:12:23 33 days ago 1732101143 IN 0 ETH$0.00 0.01039308 11.12755679 Transact With Ex... 21228561 2024-11-20 11:10:11 33 days ago 1732101011 IN 0 ETH$0.00 0.01894474 11.4395228 Transact 21226983 2024-11-20 5:52:47 33 days ago 1732081967 IN 0 ETH$0.00 0.00806147 8.85274011 Transact 21130869 2024-11-06 20:02:11 47 days ago 1730923331 IN 0 ETH$0.00 0.02281975 23.62188434 Transact 21099394 2024-11-02 10:34:59 51 days ago 1730543699 IN 0 ETH$0.00 0.00366938 3.76559738 Transact 21095943 2024-11-01 23:00:35 52 days ago 1730502035 IN 0.035 ETH$119.08 0.00383738 4.27960663 Latest 25 internal transactions (View All)
Advanced mode:Parent Transaction Hash Block FromTo21421309 2024-12-17 9:18:11 6 days ago 1734427091 689 ETH$2,344,250.90 21274173 2024-11-26 20:00:11 27 days ago 1732651211 0.035633 ETH$121.24 21096596 2024-11-02 1:11:59 52 days ago 1730509919 0.042 ETH$142.90 21092261 2024-11-01 10:40:35 52 days ago 1730457635 0.98621781 ETH$3,355.50 21092244 2024-11-01 10:37:11 52 days ago 1730457431 0.98621781 ETH$3,355.50 21091162 2024-11-01 7:00:11 52 days ago 1730444411 0.45 ETH$1,531.08 21090877 2024-11-01 6:02:59 52 days ago 1730440979 0.02 ETH$68.05 21088475 2024-10-31 22:00:59 53 days ago 1730412059 15 ETH$51,035.94 21080529 2024-10-30 19:25:59 54 days ago 1730316359 0.76 ETH$2,585.82 21024107 2024-10-22 22:29:23 62 days ago 1729636163 0.00850045 ETH$28.92 21023956 2024-10-22 21:58:47 62 days ago 1729634327 0.00940727 ETH$32.01 21023049 2024-10-22 18:55:59 62 days ago 1729623359 0.1 ETH$340.24 21018472 2024-10-22 3:36:11 62 days ago 1729568171 64.97557126 ETH$221,072.63 21018472 2024-10-22 3:36:11 62 days ago 1729568171 0.02442873 ETH$83.12 21018269 2024-10-22 2:55:11 62 days ago 1729565711 59.97736881 ETH$204,066.76 21018269 2024-10-22 2:55:11 62 days ago 1729565711 0.02263118 ETH$77.00 21008990 2024-10-20 19:50:23 64 days ago 1729453823 4.00028998 ETH$13,610.57 21004772 2024-10-20 5:43:11 64 days ago 1729402991 0.10008 ETH$340.51 21004730 2024-10-20 5:34:47 64 days ago 1729402487 0.09999999 ETH$340.24 20999011 2024-10-19 10:26:59 65 days ago 1729333619 1.88217832 ETH$6,403.92 20992185 2024-10-18 11:35:23 66 days ago 1729251323 0.09098559 ETH$309.57 20991801 2024-10-18 10:18:23 66 days ago 1729246703 0.1 ETH$340.24 20983312 2024-10-17 5:52:11 67 days ago 1729144331 299.40267697 ETH$1,018,686.49 20983312 2024-10-17 5:52:11 67 days ago 1729144331 0.09732302 ETH$331.13 20983305 2024-10-17 5:50:47 67 days ago 1729144247 0.49325893 ETH$1,678.26 Loading...LoadingContract Name:Hinkal
Compiler Versionv0.8.17+commit.8df45f5f
Optimization Enabled:Yes with 1000 runs
Other Settings:default evmVersionContract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "./HinkalBase.sol"; import "./VerifierFacade.sol"; import "./types/IHinkal.sol"; import "./types/IExternalAction.sol"; import "./types/ITransactHook.sol"; ///@title Hinkal Contract ///@notice Entrypoint for all Hinkal Transactions. contract Hinkal is IHinkal, VerifierFacade, HinkalBase { mapping(uint256 => address) internal externalActionMap; constructor( IMerkle.MerkleConstructorArgs memory constructorArgs, address _hinkalHelper, address _accessToken, address _hinkalHelperManager ) HinkalBase( constructorArgs, _hinkalHelper, _accessToken, _hinkalHelperManager ) {} function registerExternalAction( uint256 externalActionId, address externalActionAddress ) public onlyRole(DEFAULT_ADMIN_ROLE) { externalActionMap[externalActionId] = externalActionAddress; emit ExternalActionRegistered(externalActionAddress); } ///@notice Stop allowing smart contract to be called by Hinkal. ///@param externalActionId Id of this contract function removeExternalAction( uint256 externalActionId ) public onlyRole(DEFAULT_ADMIN_ROLE) { address externalActionAddress = externalActionMap[externalActionId]; delete externalActionMap[externalActionId]; emit ExternalActionRemoved(externalActionAddress); } function transact( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) public payable nonReentrant { _transact(a, b, c, dimensions, circomData); } function transactWithExternalAction( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) public payable nonReentrant { require(circomData.externalActionId != 0, "externalAddress is missing"); _transact(a, b, c, dimensions, circomData); } function transactWithHook( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) public payable nonReentrant { require( circomData.hookData.hookContract != address(0) || circomData.hookData.preHookContract != address(0), "hookContract is missing" ); _transact(a, b, c, dimensions, circomData); } function transactWithExternalActionAndHook( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) public payable nonReentrant { require(circomData.externalActionId != 0, "externalAddress is missing"); require( circomData.hookData.hookContract != address(0) || circomData.hookData.preHookContract != address(0), "hookContract is missing" ); _transact(a, b, c, dimensions, circomData); } function _transact( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) internal { { uint256[] memory inputForCircom = hinkalHelper.performHinkalChecks( circomData, dimensions ); require( verifyProof( a, b, c, inputForCircom, buildVerifierId(dimensions, circomData.externalActionId) ), "Invalid Proof" ); // Root Hash Validation require( rootHashExists(circomData.rootHashHinkal), "Hinkal Root Hash is Incorrect" ); require( accessToken.checkForRootHash( circomData.rootHashAccessToken, msg.sender ), "Access Token Root Hash is Incorrect" ); // if you are forking/develop a netork the next statement should be commented require( circomData.timeStamp > block.timestamp - 7 * 60 && circomData.timeStamp < block.timestamp + 7 * 60, "Timestamp provided does not align with current time" ); } { // function variables to store commitments created on-chain UTXO[] memory utxoSet; if (circomData.hookData.preHookContract != address(0)) { IPreTransactHook transactHook = IPreTransactHook( circomData.hookData.preHookContract ); transactHook.preTransact( circomData, circomData.hookData.preHookMetadata ); } uint256[] memory oldBalances = getBalancesForArray( circomData.erc20TokenAddresses, circomData.tokenIds ); if (circomData.externalActionId == 0) { _internalTransact(circomData); } else { utxoSet = _internalRunExternalAction(circomData); } uint256[] memory newBalances = getBalancesForArray( circomData.erc20TokenAddresses, circomData.tokenIds ); OnChainCommitment[] memory onChainCommitments = new OnChainCommitment[]( utxoSet.length ); uint256 onChainCommitmentCounter = 0; for (uint64 i; i < circomData.erc20TokenAddresses.length; i++) { int256 balanceDif; if (circomData.erc20TokenAddresses[i] == address(0)) { balanceDif = int256(newBalances[i]) + int256(msg.value) - int256(oldBalances[i]); } else { balanceDif = int256(newBalances[i]) - int256(oldBalances[i]); } // balance inequality to check that minimum amount of token is received require( balanceDif >= circomData.amountChanges[i], "Inbalance in token detected" ); uint256 utxoAmount = 0; for (uint j = 0; j < utxoSet.length; j++) { if ( utxoSet[j].erc20Address == circomData.erc20TokenAddresses[i] ) { utxoAmount = utxoSet[j].amount; onChainCommitments[ onChainCommitmentCounter++ ] = createCommitment(utxoSet[j]); break; } } // balance equation to check that we create utxo equal exactly to balance increase require( balanceDif == int256(utxoAmount) + int256(identity(circomData.outCommitments[i][0])) * circomData.amountChanges[i], "Balance Diff Should be equal to sum of onchain and offchain created commitments" ); } if (circomData.hookData.hookContract != address(0)) { ITransactHook transactHook = ITransactHook( circomData.hookData.hookContract ); transactHook.afterTransact( circomData, circomData.hookData.postHookMetadata ); } insertNullifiers(circomData.inputNullifiers); insertCommitments( circomData.outCommitments, circomData.encryptedOutputs, onChainCommitments ); } } ///@notice private internal function for transaction ///@param circomData circom dara function _internalTransact(CircomData calldata circomData) private { for (uint64 i = 0; i < circomData.erc20TokenAddresses.length; i++) { if (circomData.amountChanges[i] > 0) { require( circomData.externalAddress == msg.sender, "Deposit should come from the sender" ); transferTokenFrom( circomData.erc20TokenAddresses[i], circomData.externalAddress, address(this), uint256(circomData.amountChanges[i]), circomData.tokenIds[i] ); } else if (circomData.amountChanges[i] < 0) { uint256 relayFee = 0; if (circomData.relay != address(0)) { relayFee = hinkalHelper.calculateRelayFee( uint256(-circomData.amountChanges[i]), circomData.erc20TokenAddresses[i], circomData.flatFees[i], circomData.externalActionId ); require( relayFee <= uint256(-circomData.amountChanges[i]), "Relay Fee is over withdraw amount" ); if (circomData.tokenIds[i] == 0) transferERC20TokenOrETH( circomData.erc20TokenAddresses[i], circomData.relay, relayFee ); } transferToken( circomData.erc20TokenAddresses[i], circomData.externalAddress, uint256(-circomData.amountChanges[i]) - relayFee, circomData.tokenIds[i] ); } } } ///@notice internal function to use Hinkal with external contracts. ///@param circomData circom data. function _internalRunExternalAction( CircomData calldata circomData ) internal returns (UTXO[] memory) { require( externalActionMap[circomData.externalActionId] == circomData.externalAddress && circomData.externalAddress != address(0), "Unknown externalAddress" ); for (uint64 i = 0; i < circomData.erc20TokenAddresses.length; i++) { if (circomData.amountChanges[i] < 0) { transferToken( circomData.erc20TokenAddresses[i], circomData.externalAddress, uint256(-circomData.amountChanges[i]), circomData.tokenIds[i] ); } } return IExternalAction(circomData.externalAddress).runAction(circomData); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ```solidity * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ```solidity * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules} * to enforce additional security measures for this role. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view virtual override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `_msgSender()` is missing `role`. * Overriding this function changes the behavior of the {onlyRole} modifier. * * Format of the revert message is described in {_checkRole}. * * _Available since v4.6._ */ function _checkRole(bytes32 role) internal view virtual { _checkRole(role, _msgSender()); } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view virtual { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(account), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleGranted} event. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. * * May emit a {RoleRevoked} event. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. * * May emit a {RoleRevoked} event. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * May emit a {RoleGranted} event. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. * * May emit a {RoleGranted} event. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. * * May emit a {RoleRevoked} event. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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 (last updated v4.9.0) (access/Ownable2Step.sol) pragma solidity ^0.8.0; import "./Ownable.sol"; /** * @dev Contract module which provides 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} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2Step is Ownable { address private _pendingOwner; event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner"); _transferOwnership(sender); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol) pragma solidity ^0.8.0; import "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol) pragma solidity ^0.8.0; import "../token/ERC721/IERC721.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 amount) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value)); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value)); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0)); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * 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; /** * @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * 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 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "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"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, 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) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (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; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// 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 // OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1, "Math: mulDiv overflow"); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.0; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // must be unchecked in order to support `n = type(int256).min` return uint256(n >= 0 ? n : -n); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; import "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toString(int256 value) internal pure returns (string memory) { return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value)))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @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] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/access/AccessControl.sol"; import "./types/IHinkalBase.sol"; import "./types/IHinkalHelper.sol"; import "./types/ICrossChainAccessToken.sol"; import "./types/IMerkle.sol"; import "./Merkle.sol"; import "./OwnerHinkal.sol"; import "./Transferer.sol"; import "./types/CircomData.sol"; ///@title Base class for Hinkal Contract contract HinkalBase is IHinkalBase, Merkle, Transferer, AccessControl, ReentrancyGuard { mapping(uint256 => bool) public nullifiers; IHinkalHelper public hinkalHelper; ICrossChainAccessToken public accessToken; bytes32 public constant HINKAL_HELPER_MANAGER = keccak256("HINKAL_HELPER_MANAGER"); constructor( IMerkle.MerkleConstructorArgs memory constructorArgs, address _hinkalHelper, address _accessToken, address _hinkalHelperManager ) Merkle(constructorArgs) { hinkalHelper = IHinkalHelper(_hinkalHelper); accessToken = ICrossChainAccessToken(_accessToken); _setRoleAdmin(HINKAL_HELPER_MANAGER, HINKAL_HELPER_MANAGER); _grantRole(HINKAL_HELPER_MANAGER, _hinkalHelperManager); _grantRole(DEFAULT_ADMIN_ROLE, msg.sender); } receive() external payable {} ///@notice set the hinkal helper. ///@dev See HinkalHelper contract ///@param _hinkalHelper ethereum address of hinkal helper contract function setHinkalHelper( address _hinkalHelper ) external onlyRole(HINKAL_HELPER_MANAGER) { hinkalHelper = IHinkalHelper(_hinkalHelper); } ///@notice set access token. ///@dev See Cross Chain Access Token contract ///@param _accessToken ethereum address of Cross Chain Access Token contract function setAccessToken( address _accessToken ) external onlyRole(HINKAL_HELPER_MANAGER) { accessToken = ICrossChainAccessToken(_accessToken); } function register(bytes calldata shieldedAddressHash) external { accessToken.registerCheck(msg.sender); emit Register(msg.sender, shieldedAddressHash); } ///@notice insert user commitments to merkle tree. function createCommitment( // TODO --> needs coverage? UTXO memory utxo ) internal view returns (OnChainCommitment memory) { uint256 commitment; if (utxo.tokenId > 0) { commitment = hash5( utxo.amount, uint256(uint160(utxo.erc20Address)), utxo.stealthAddressStructure.stealthAddress, utxo.timeStamp, utxo.tokenId ); } else { commitment = hash4( utxo.amount, uint256(uint160(utxo.erc20Address)), utxo.stealthAddressStructure.stealthAddress, utxo.timeStamp ); } OnChainCommitment memory onChainCommitment = OnChainCommitment({ utxo: utxo, commitment: commitment }); return onChainCommitment; } function insertCommitments( uint256[][] calldata outCommitments, bytes[][] calldata encryptedOutputs, OnChainCommitment[] memory onChainCommitments ) internal { // 1) Total Length of Commitments uint256 length = 0; for (uint16 i = 0; i < outCommitments.length; i++) { for (uint16 j = 0; j < outCommitments[i].length; j++) { length += identity(outCommitments[i][j]); } } length += onChainCommitments.length; if (length > 0) { // 2) Flattening leaves array uint256[] memory leaves = new uint256[](length); uint256 index = 0; for (uint16 i = 0; i < outCommitments.length; i++) { for (uint16 j = 0; j < outCommitments[i].length; j++) { if (outCommitments[i][j] != 0) leaves[index++] = outCommitments[i][j]; } } for (uint16 i = 0; i < onChainCommitments.length; i++) { leaves[index++] = onChainCommitments[i].commitment; } // 3) Inserting Leaves uint256[] memory insertedIndexes = insertMany(leaves); // 4) Emitting Commitments/EncryptedOutputs index = 0; for (uint16 i = 0; i < encryptedOutputs.length; i++) { for (uint16 j = 0; j < encryptedOutputs[i].length; j++) { if (outCommitments[i][j] != 0) { emit NewCommitment( leaves[index], int256(insertedIndexes[index]), encryptedOutputs[i][j] ); index++; } } } for (uint16 i = 0; i < onChainCommitments.length; i++) { emit NewCommitment( leaves[index], -1 * int256(insertedIndexes[index++]), abi.encode(onChainCommitments[i].utxo) ); } } } function insertNullifiers(uint256[][] calldata inputNullifiers) internal { for (uint256 i = 0; i < inputNullifiers.length; i++) { for (uint16 j = 0; j < inputNullifiers[i].length; j++) { if (inputNullifiers[i][j] == 0) continue; require( !nullifiers[inputNullifiers[i][j]], "Nullifier cannot be reused" ); nullifiers[inputNullifiers[i][j]] = true; emit Nullified(inputNullifiers[i][j]); } } } function identity(uint256 value) internal pure returns (uint256) { return value > 0 ? 1 : 0; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "./types/IPoseidon2.sol"; import "./MerkleBase.sol"; ///@title Hinkal Merkle Tree contract Merkle is MerkleBase { constructor( MerkleConstructorArgs memory constructorArgs ) MerkleBase(constructorArgs) {} function outputGas(uint256 index, uint256[] memory gasUsed) internal view { gasUsed[index] = gasleft(); } ///@notice insert a single new leaf to Merkle Tree ///@param leaf value to be inserted ///@return index index of node inserted function insert(uint256 leaf) internal override returns (uint256) { uint256 newIndex = ++m_index; uint256 currentNodeIndex = newIndex - 1; require(m_index <= uint256(2) ** LEVELS, "Tree is full."); uint256 fullCount = newIndex - MINIMUM_INDEX; // number of inserted leaves uint256 twoPower = logarithm2(fullCount); // number of tree levels to be updated, (e.g. if 9 => 4 levels should be updated) uint256 prevHash = leaf; insertOne(currentNodeIndex, twoPower, prevHash); roots[rootIndex] = tree[twoPower]; // adding root to roots mapping rootIndex = (rootIndex + 1) % MAX_ROOT_NUMBER; return newIndex - 1; } function insertMany( uint256[] memory leaves ) internal returns (uint256[] memory insertedIndexes) { m_index += uint128(leaves.length); uint256 newIndex = m_index; uint256 currentNodeIndex = newIndex - leaves.length; require(m_index <= uint256(2) ** LEVELS, "Tree is full."); insertedIndexes = new uint256[](leaves.length); for (uint256 i = 0; i < insertedIndexes.length; i++) { insertedIndexes[i] = currentNodeIndex + i; } uint256[][] memory sortedLeaves = sortInPairs(leaves, currentNodeIndex); uint256 fullCount = newIndex - MINIMUM_INDEX; // number of inserted leaves uint256 twoPower = logarithm2(fullCount); // number of tree levels to be updated, (e.g. if 9 => 4 levels should be updated) for (uint256 i = 0; i < sortedLeaves.length; i++) { if (sortedLeaves[i].length == 1) insertOne(currentNodeIndex++, twoPower, sortedLeaves[i][0]); else { insertTwo( sortedLeaves[i][0], sortedLeaves[i][1], currentNodeIndex, twoPower ); currentNodeIndex += 2; } } roots[rootIndex] = tree[twoPower]; // adding root to roots mapping rootIndex = (rootIndex + 1) % MAX_ROOT_NUMBER; } ///@notice insert single value and update Merkle Tree ///@param currentNodeIndex Index of the last node before insertion ///@param twoPower Nodes in Merkle Tree that must be updated ///@param prevHash node to be inserted function insertOne( uint256 currentNodeIndex, uint256 twoPower, uint256 prevHash ) internal { for (uint256 i = 0; i <= twoPower; i++) { if (currentNodeIndex % 2 == 0 || currentNodeIndex == 1) { tree[i] = prevHash; if (i != twoPower) prevHash = hash2(prevHash, 0); } else { prevHash = hash2(tree[i], prevHash); } currentNodeIndex /= 2; } } function insertTwo( uint256 left, uint256 right, uint256 currentNodeIndex, uint256 twoPower ) internal { uint256 prevHash = hash2(left, right); currentNodeIndex /= 2; // we are starting from i = 1, so we need one iteration for (uint256 i = 1; i <= twoPower; i++) { if (currentNodeIndex % 2 == 0 || currentNodeIndex == 1) { tree[i] = prevHash; if (i != twoPower) prevHash = hash2(prevHash, 0); } else { prevHash = hash2(tree[i], prevHash); } currentNodeIndex /= 2; } } ///@notice Sort leaf nodes in pairs of left and right nodes. ///@param leaves leaves to be sorted ///@param currentNodeIndex Index of the last node to be inserted ///@return sortedLeaves leaves sorted in pairs of left and right function sortInPairs( uint256[] memory leaves, uint256 currentNodeIndex ) internal pure returns (uint256[][] memory sortedLeaves) { uint leavesLength = leaves.length; bool firstLeafIfRight = currentNodeIndex % 2 != 0; uint256 firstElement = firstLeafIfRight ? 1 : 0; uint256 netElements = leavesLength - firstElement; uint256 lengthWithoutFirst = (netElements % 2 == 0) ? netElements / 2 : (netElements + 1) / 2; sortedLeaves = new uint256[][](firstElement + lengthWithoutFirst); if (firstLeafIfRight) { uint256[] memory first = new uint256[](1); first[0] = leaves[0]; sortedLeaves[0] = first; } uint arrIndex = firstLeafIfRight ? 1 : 0; uint sortedArrayIndex = arrIndex; while (arrIndex < leavesLength) { uint256[] memory arr; if (arrIndex + 1 < leavesLength) { arr = new uint256[](2); arr[0] = leaves[arrIndex]; arr[1] = leaves[++arrIndex]; } else { arr = new uint256[](1); arr[0] = leaves[arrIndex]; } sortedLeaves[sortedArrayIndex++] = arr; ++arrIndex; } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "@openzeppelin/contracts/utils/math/Math.sol"; import "./types/IPoseidon2.sol"; import "./types/IPoseidon4.sol"; import "./types/IPoseidon5.sol"; import "./types/IMerkle.sol"; abstract contract MerkleBase is IMerkle { using Math for uint256; // states mapping(uint256 => uint256) public tree; mapping(uint256 => uint256) roots; uint128 public m_index; // current index of the tree uint128 public rootIndex = 0; // constants uint128 immutable LEVELS; // deepness of tree uint128 constant MAX_ROOT_NUMBER = 25; uint256 immutable MINIMUM_INDEX; IPoseidon2 public immutable poseidon2; // hashing IPoseidon4 public immutable poseidon4; // hashing IPoseidon5 public immutable poseidon5; // please see deployment scripts to understand how to create and instance of Poseidon contract constructor(MerkleConstructorArgs memory constructorArgs) { LEVELS = constructorArgs.levels; m_index = uint128(2 ** (LEVELS - 1)); MINIMUM_INDEX = 2 ** (LEVELS - 1); poseidon2 = IPoseidon2(constructorArgs.poseidon2); poseidon4 = IPoseidon4(constructorArgs.poseidon4); poseidon5 = IPoseidon5(constructorArgs.poseidon5); } function hash2( uint256 a, uint256 b ) public view returns (uint256 poseidonHash) { poseidonHash = poseidon2.poseidon([a, b]); } function hash4( uint256 a0, uint256 a1, uint256 a2, uint256 a3 ) public view returns (uint256 poseidonHash) { poseidonHash = poseidon4.poseidon([a0, a1, a2, a3]); } function hash5( uint256 a0, uint256 a1, uint256 a2, uint256 a3, uint256 a4 ) public view returns (uint256 poseidonHash) { poseidonHash = poseidon5.poseidon([a0, a1, a2, a3, a4]); } function insert(uint256 leaf) internal virtual returns (uint256); function getRootHash() public view returns (uint256) { return roots[rootIndex > 0 ? rootIndex - 1 : MAX_ROOT_NUMBER - 1]; } function rootHashExists(uint256 _root) public view returns (bool) { uint256 i = rootIndex; // latest root hash do { if (i == 0) { i = MAX_ROOT_NUMBER; } i--; if (_root == roots[i]) { return true; } } while (i != rootIndex); return false; } ///@notice logarithm of x with base 2. ///@notice instead of rounding down, this function rounds up. ///@param x operand ///@return y logarithm base 2 of input function logarithm2(uint256 x) public pure returns (uint256 y) { y = Math.log2(x, Math.Rounding.Up); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.8.17; import "@openzeppelin/contracts/access/Ownable2Step.sol"; contract OwnerHinkal is Ownable2Step { function renounceOwnership() public view override onlyOwner { revert("The Ownership cannot be renounced"); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "@openzeppelin/contracts/interfaces/IERC20.sol"; import "@openzeppelin/contracts/interfaces/IERC721.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "./TransfererBase.sol"; contract Transferer is TransfererBase { using SafeERC20 for IERC20; function onERC721Received( address, address, uint256, bytes calldata ) public pure returns (bytes4) { return IERC721Receiver.onERC721Received.selector; } function unsafeApproveERC20Token( address _erc20TokenAddress, address _to, uint256 _value ) internal { IERC20(_erc20TokenAddress).approve(_to, 0); IERC20(_erc20TokenAddress).approve(_to, _value); } function getERC20Allowance( address _erc20TokenAddress, address owner, address spender ) internal view returns (uint256) { IERC20 outToken = IERC20(_erc20TokenAddress); return outToken.allowance(owner, spender); } function approveERC721Token( address _erc20TokenAddress, address _to, uint256 _tokenId ) internal { IERC721(_erc20TokenAddress).approve(_to, _tokenId); } function approveToken( address _erc20TokenAddress, address _to, uint256 _tokenId, uint256 _value ) internal { if (_tokenId == 0) { unsafeApproveERC20Token(_erc20TokenAddress, _to, _value); } else { approveERC721Token(_erc20TokenAddress, _to, _tokenId); } } function transferETH(address _recepient, uint256 _value) internal { (bool success, ) = _recepient.call{value: _value}(""); require(success, "Transfer Failed"); } function transferERC20TokenFrom( address _erc20TokenAddress, address _from, address _to, uint256 _value ) internal { IERC20(_erc20TokenAddress).safeTransferFrom(_from, _to, _value); } function transferNftFrom( address _erc20TokenAddress, address _from, address _to, uint256 _tokenId ) internal { IERC721(_erc20TokenAddress).safeTransferFrom(_from, _to, _tokenId); } function transferERC20TokenOrETH( address _erc20TokenAddress, address _to, uint256 _value ) internal { if (_erc20TokenAddress == address(0)) { transferETH(_to, _value); } else { transferERC20Token(_erc20TokenAddress, _to, _value); } } function transferToken( address _erc20TokenAddress, address _to, uint256 _value, uint256 _tokenId ) internal { if (_tokenId == 0) { transferERC20TokenOrETH(_erc20TokenAddress, _to, _value); } else { transferNftFrom(_erc20TokenAddress, address(this), _to, _tokenId); } } function multiTransfer( address[] memory erc20TokenAddresses, address _to, uint256[] memory amounts ) internal returns (bool) { for (uint64 i = 0; i < erc20TokenAddresses.length; i++) { if (amounts[i] > 0) transferERC20TokenOrETH( erc20TokenAddresses[i], _to, amounts[i] ); } return true; } function transferERC20TokenFromOrCheckETH( address _contractAddress, address _from, address _to, uint256 _value ) internal { if (_contractAddress == address(0)) { require( msg.value == _value, "msg.value doesn't match needed amount" ); if (_to != address(this)) { transferETH(_to, _value); } } else { transferERC20TokenFrom(_contractAddress, _from, _to, _value); } } function transferTokenFrom( address _erc20TokenAddress, address _from, address _to, uint256 _value, uint256 _tokenId ) internal { if (_tokenId == 0) { transferERC20TokenFromOrCheckETH( _erc20TokenAddress, _from, _to, _value ); } else { transferNftFrom(_erc20TokenAddress, _from, _to, _tokenId); } } function multiTransferFrom( address[] memory erc20TokenAddresses, address _from, address _to, uint256[] memory amounts ) internal returns (bool) { for (uint64 i = 0; i < erc20TokenAddresses.length; i++) { if (amounts[i] > 0) { transferERC20TokenFromOrCheckETH( erc20TokenAddresses[i], _from, _to, amounts[i] ); } } return true; } function getERC20OrETHBalance( address _erc20TokenAddress ) internal view returns (uint256) { if (_erc20TokenAddress == address(0)) { return address(this).balance; } else { IERC20 outToken = IERC20(_erc20TokenAddress); return outToken.balanceOf(address(this)); } } function getNftBalance( address _erc20TokenAddress, uint256 tokenId ) internal view returns (uint256) { IERC721 outToken = IERC721(_erc20TokenAddress); try outToken.ownerOf(tokenId) returns (address owner) { if (owner == address(this)) return 1; else return 0; } catch { return 0; } } function getBalancesForArrayMemory( address[] memory erc20TokenAddresses ) internal view returns (uint256[] memory balances) { balances = new uint256[](erc20TokenAddresses.length); for (uint64 i; i < erc20TokenAddresses.length; i++) { balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]); } } function getBalancesForArrayMemory( address[] memory erc20TokenAddresses, uint256[] memory tokenIds ) internal view returns (uint256[] memory balances) { balances = new uint256[](erc20TokenAddresses.length); for (uint64 i; i < erc20TokenAddresses.length; i++) { if (tokenIds[i] == 0) { balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]); } else { balances[i] = getNftBalance( erc20TokenAddresses[i], tokenIds[i] ); } } } function getBalancesForArray( address[] calldata erc20TokenAddresses ) internal view returns (uint256[] memory balances) { balances = new uint256[](erc20TokenAddresses.length); for (uint64 i; i < erc20TokenAddresses.length; i++) { balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]); } } function getBalancesForArray( address[] calldata erc20TokenAddresses, uint256[] calldata tokenIds ) internal view returns (uint256[] memory balances) { balances = new uint256[](erc20TokenAddresses.length); for (uint64 i; i < erc20TokenAddresses.length; i++) { if (tokenIds[i] == 0) { balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]); } else { balances[i] = getNftBalance( erc20TokenAddresses[i], tokenIds[i] ); } } } function sendToRelay( address relay, uint256 actualAmount, address erc20TokenAddress ) internal { if (relay != address(0) && actualAmount > 0) { transferERC20TokenOrETH( erc20TokenAddress, relay, uint256(actualAmount) ); } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "@openzeppelin/contracts/interfaces/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; contract TransfererBase { using SafeERC20 for IERC20; function transferERC20Token( address _erc20TokenAddress, address _to, uint256 _value ) internal { IERC20(_erc20TokenAddress).safeTransfer(_to, _value); } function approveERC20Token( address _erc20TokenAddress, address _to, uint256 _value ) internal { IERC20(_erc20TokenAddress).safeApprove(_to, 0); IERC20(_erc20TokenAddress).safeApprove(_to, _value); } function approveUnlimited( address _erc20TokenAddress, address _to ) internal { if (IERC20(_erc20TokenAddress).allowance(address(this), _to) < type(uint256).max / 2) { IERC20(_erc20TokenAddress).safeApprove(_to, 0); IERC20(_erc20TokenAddress).safeApprove(_to, type(uint256).max); } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; struct AxelarChainInfo{ string destinationChain; string destinationAddress; uint256 messageFee; } struct AxelarCapsule{ AxelarChainInfo[] chains; uint256 totalMessageFees; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; import "./StealthAddressStructure.sol"; uint256 constant CIRCOM_P = 21888242871839275222246405745257275088548364400416034343698204186575808495617; // https://docs.circom.io/circom-language/basic-operators/ struct CircomData { uint256 rootHashHinkal; address[] erc20TokenAddresses; uint256[] tokenIds; int256[] amountChanges; uint256[][] inputNullifiers; uint256[][] outCommitments; bytes[][] encryptedOutputs; uint256[] flatFees; uint256 timeStamp; StealthAddressStructure stealthAddressStructure; uint256 rootHashAccessToken; uint256 calldataHash; uint16 publicSignalCount; address relay; address externalAddress; uint256 externalActionId; bytes externalActionMetadata; HookData hookData; } struct HookData { address preHookContract; address hookContract; bytes preHookMetadata; bytes postHookMetadata; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; struct Dimensions { uint16 tokenNumber; uint16 nullifierAmount; uint16 outputAmount; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.0; import "./CircomData.sol"; interface ICircomDataBuilder { function getHashedCalldata( CircomData memory circomData ) external pure returns (uint256); function formInputForCircom( CircomData memory circomData ) external pure returns (uint256[] memory input); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.0; import "./IMerkle.sol"; import "./AxelarInfo.sol"; struct SignatureData { uint8 v; bytes32 r; bytes32 s; uint256 accessKey; uint256 nonce; } struct AccessTokenWithAddress { uint256 accessToken; address ethAddress; } interface ICrossChainAccessToken is IMerkle { event NewAccessKeyAdded( uint256 accessKey, uint256 index, address senderAddress ); event MintingFeeChanged(uint256 newMintingFee); event AccessKeyBlacklisted(uint256 blacklistedAccessKey); event AddressBlacklisted(address blacklistedAddress); event AddressRemovedFromBlacklist(address addressToRestore); event FundsWithdrawnFromAccessToken(uint256 amount); event AccessKeyMigrationReceived(uint256 accessKey, string sourceChain); event CrossChainAccessTokenRegistryChange( string sourceChain, address sourceAddress ); struct CrossChainAccessTokenRegistryUpdate { string sourceChain; address sourceAddress; } function usedNonces(uint256) external view returns (bool); function addToken(SignatureData calldata signatureData) external payable; function blacklistAddresses(address) external view returns (bool); function setMintingFee(uint256 _mintingFee) external; function hasToken(uint256 accessKey) external view returns (bool); function blacklistAccessKey(uint256 accessKey, uint256 index) external; function blacklistAddress(address _address) external; function removeAddressFromBlacklist(address addressToRestore) external; function withdraw() external; function setAxelarGasService(address _gasService) external; function addTokenCrossChain( SignatureData calldata signatureData, AxelarCapsule calldata capsule ) external payable; function migrateAccessToken( AxelarCapsule calldata capsule, uint256 accessKey ) external payable; function registerCheck(address sender) external view; function checkForRootHash( uint256 rootHashAccessToken, address sender ) external view returns (bool); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; interface IERC20TokenRegistry { event RegistryStateChanged(bool isEnabled); event TokenAdded(address erc20Token); event TokenRemoved(address erc20Token); event TokenLimit(address erc20Token, uint256 tokenLimit); function tokenRegistry(address) external returns (bool); function tokenLimits(address) external returns (uint256); function enabled() external view returns (bool); function changeState(bool _enabled) external; function addERCToken(address erc20Token) external; function removeToken(address erc20Token) external; function tokenInRegistry(address erc20Token) external view returns (bool); function setTokenLimit(address _token, uint256 _tokenLimit) external; function getTokenLimit(address _token) external view returns (uint256); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; import "./CircomData.sol"; import "./UTXO.sol"; interface IExternalAction { function runAction( CircomData calldata circomData ) external returns (UTXO[] memory); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; import "../types/Dimensions.sol"; import "../types/CircomData.sol"; interface IHinkal { event ExternalActionRegistered(address externalActionAddress); event ExternalActionRemoved(address externalActionAddress); struct ConstructorArgs { uint256 levels; address poseidon; address accessTokenAddress; address circomDataBuilderAddress; address erc20TokenRegistryAddress; address relayStoreAddress; } function transact( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) external payable; function transactWithExternalAction( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) external payable; function transactWithHook( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) external payable; function transactWithExternalActionAndHook( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, Dimensions calldata dimensions, CircomData calldata circomData ) external payable; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "./IRelayStore.sol"; import "./UTXO.sol"; interface IHinkalBase { event Register(address ethereumAddress, bytes shieldedAddressHash); event NewCommitment( uint256 commitment, int256 index, bytes encryptedOutput ); event Nullified(uint256 nullifier); event NewTransaction( address sender, uint256 timestamp, address erc20TokenAddress, int256 publicAmount ); event NewUtxo( uint256 amount, address erc20Address, uint256 randomization, uint256 stealthAddress, uint256 timeStamp, uint256 tokenId ); function setHinkalHelper(address _hinkalHelper) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "./IRelayStore.sol"; import "./ICircomDataBuilder.sol"; import "./Dimensions.sol"; import "./IRelayStore.sol"; import "./IERC20TokenRegistry.sol"; interface IHinkalHelper is IRelayStore, IERC20TokenRegistry { function getRelayStore() external view returns (RelayEntry[] memory); function relayerIsValid(address relay) external view; function checkTokenRegistry( address[] calldata erc20TokenAddresses, int256[] calldata amountChanges ) external view; function performHinkalChecks( CircomData calldata circomData, Dimensions calldata dimensions ) external view returns (uint256[] memory); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; interface IMerkle { struct MerkleConstructorArgs { uint128 levels; address poseidon2; address poseidon4; address poseidon5; } function hash2(uint256 a, uint256 b) external view returns (uint256); function getRootHash() external view returns (uint256); function rootHashExists(uint256 _root) external view returns (bool); function logarithm2(uint256 x) external pure returns (uint256); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.0; interface IPoseidon2 { function poseidon(uint256[2] memory input) external pure returns (uint256); function poseidon(bytes32[2] memory input) external pure returns (bytes32); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.0; interface IPoseidon4 { function poseidon(uint256[4] memory input) external pure returns (uint256); function poseidon(bytes32[4] memory input) external pure returns (bytes32); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.0; interface IPoseidon5 { function poseidon(uint256[5] memory input) external pure returns (uint256); function poseidon(bytes32[5] memory input) external pure returns (bytes32); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; struct RelayEntry { address relayAddress; string url; uint256 priority; } interface IRelayStore { event RelayPercentageChanged(uint32 newRelayPercentage); event RelayPercentageExternalChanged(uint32 newRelayPercentage); event RelayAddedOrSet(address relayAddress, string url, uint256 priority); event RelayRemoved(address relayAddress); function getRelayPercentage( uint256 amount, address erc20Address ) external view returns (uint32); function setRelayPercentage(uint32 _relayPercentage) external; function getRelayPercentageExternal( uint256 amount, address erc20Address, uint256 externalActionId ) external view returns (uint32); function setRelayPercentageExternal( uint32 _relayPercentageExternal ) external; function isRelayInList(address relay) external view returns (bool); function getRelayStore() external view returns (RelayEntry[] memory); function removeRelay(address _relayAddress) external; function addOrSetRelay( address relayAddress, string memory url, uint256 priority ) external; function calculateRelayFee( uint256 balance, address tokenAddress, uint256 flatFee, uint256 externalActionId ) external view returns (uint256 relayFee); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; import "./CircomData.sol"; interface IPreTransactHook { function preTransact( CircomData calldata circomData, bytes calldata metadata ) external; } interface ITransactHook { function afterTransact( CircomData calldata circomData, bytes calldata metadata ) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; interface IVerifier { function verifyProof( uint256[2] memory a, uint256[2][2] memory b, uint256[2] memory c, uint256[] memory input, uint256 verifierId ) view external returns (bool); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "./IVerifier.sol"; import "./Dimensions.sol"; interface IVerifierFacade { event VerifierRegistered(uint256 verifierId, address verifierAddress); event VerifierRemoved(uint256 verifierId); function registerVerifiers( uint256[] calldata verifierIds, address[] calldata verifierAddresses ) external; function removeVerifier(uint256 verifierId) external; function buildVerifierId( Dimensions calldata dimensions, uint256 externalActionId ) external pure returns (uint256); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.6; struct StealthAddressStructure { uint256 extraRandomization; uint256 stealthAddress; uint256 H0; uint256 H1; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.8.0; import "./StealthAddressStructure.sol"; struct UTXO { uint256 amount; address erc20Address; StealthAddressStructure stealthAddressStructure; uint256 timeStamp; uint256 tokenId; } struct OnChainCommitment { UTXO utxo; uint256 commitment; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import "./OwnerHinkal.sol"; import "./types/Dimensions.sol"; import "./types/IVerifierFacade.sol"; import "./types/IVerifier.sol"; ///@title A Facade pattern for zk proof Verifiers contract VerifierFacade is IVerifierFacade, OwnerHinkal { mapping(uint256 => IVerifier) internal verifierMap; function registerVerifiers( uint256[] calldata verifierIds, address[] calldata verifierAddresses ) external onlyOwner { for (uint i = 0; i < verifierIds.length; i++) { verifierMap[verifierIds[i]] = IVerifier(verifierAddresses[i]); emit VerifierRegistered(verifierIds[i], verifierAddresses[i]); } } function removeVerifier(uint256 verifierId) external onlyOwner { delete verifierMap[verifierId]; emit VerifierRemoved(verifierId); } function buildVerifierId( Dimensions calldata dimensions, uint256 externalActionId ) public pure returns (uint256) { return uint256( keccak256( abi.encode( dimensions.tokenNumber, dimensions.nullifierAmount, dimensions.outputAmount, externalActionId ) ) ); } function verifyProof( uint256[2] calldata a, uint256[2][2] calldata b, uint256[2] calldata c, uint256[] memory input, uint256 verifierId ) internal view returns (bool) { IVerifier verifier = verifierMap[verifierId]; require( address(verifier) != address(0), "Cannot find appropriate verifier" ); return verifier.verifyProof(a, b, c, input, verifierId); } }
{ "optimizer": { "enabled": true, "runs": 1000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
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CircomData","name":"circomData","type":"tuple"}],"name":"transactWithExternalActionAndHook","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256[2]","name":"a","type":"uint256[2]"},{"internalType":"uint256[2][2]","name":"b","type":"uint256[2][2]"},{"internalType":"uint256[2]","name":"c","type":"uint256[2]"},{"components":[{"internalType":"uint16","name":"tokenNumber","type":"uint16"},{"internalType":"uint16","name":"nullifierAmount","type":"uint16"},{"internalType":"uint16","name":"outputAmount","type":"uint16"}],"internalType":"struct Dimensions","name":"dimensions","type":"tuple"},{"components":[{"internalType":"uint256","name":"rootHashHinkal","type":"uint256"},{"internalType":"address[]","name":"erc20TokenAddresses","type":"address[]"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"int256[]","name":"amountChanges","type":"int256[]"},{"internalType":"uint256[][]","name":"inputNullifiers","type":"uint256[][]"},{"internalType":"uint256[][]","name":"outCommitments","type":"uint256[][]"},{"internalType":"bytes[][]","name":"encryptedOutputs","type":"bytes[][]"},{"internalType":"uint256[]","name":"flatFees","type":"uint256[]"},{"internalType":"uint256","name":"timeStamp","type":"uint256"},{"components":[{"internalType":"uint256","name":"extraRandomization","type":"uint256"},{"internalType":"uint256","name":"stealthAddress","type":"uint256"},{"internalType":"uint256","name":"H0","type":"uint256"},{"internalType":"uint256","name":"H1","type":"uint256"}],"internalType":"struct StealthAddressStructure","name":"stealthAddressStructure","type":"tuple"},{"internalType":"uint256","name":"rootHashAccessToken","type":"uint256"},{"internalType":"uint256","name":"calldataHash","type":"uint256"},{"internalType":"uint16","name":"publicSignalCount","type":"uint16"},{"internalType":"address","name":"relay","type":"address"},{"internalType":"address","name":"externalAddress","type":"address"},{"internalType":"uint256","name":"externalActionId","type":"uint256"},{"internalType":"bytes","name":"externalActionMetadata","type":"bytes"},{"components":[{"internalType":"address","name":"preHookContract","type":"address"},{"internalType":"address","name":"hookContract","type":"address"},{"internalType":"bytes","name":"preHookMetadata","type":"bytes"},{"internalType":"bytes","name":"postHookMetadata","type":"bytes"}],"internalType":"struct HookData","name":"hookData","type":"tuple"}],"internalType":"struct CircomData","name":"circomData","type":"tuple"}],"name":"transactWithHook","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"tree","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000000000000000000000000000000000000019000000000000000000000000e90481f96af203bf4cff149edeaa656a894a4c84000000000000000000000000d5235593bffa74442c552dff384fb8c9d6b7971e0000000000000000000000008f899971c3e0b91820b983cfd57bc551291d2ba20000000000000000000000003e3e5996e1cb5c61eec0956b064a114d00dfdda10000000000000000000000000036e884cab4f427193839788edebb4b92b9a06900000000000000000000000053a1eeb0c182144b27ca0a2010939da33ebc207d
-----Decoded View---------------
Arg [0] : constructorArgs (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]
Arg [1] : _hinkalHelper (address): 0x3e3e5996e1Cb5c61eEc0956B064a114D00DFdDa1
Arg [2] : _accessToken (address): 0x0036E884Cab4F427193839788EDEBB4B92B9a069
Arg [3] : _hinkalHelperManager (address): 0x53a1EEB0c182144B27Ca0a2010939DA33ebc207d
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000019
Arg [1] : 000000000000000000000000e90481f96af203bf4cff149edeaa656a894a4c84
Arg [2] : 000000000000000000000000d5235593bffa74442c552dff384fb8c9d6b7971e
Arg [3] : 0000000000000000000000008f899971c3e0b91820b983cfd57bc551291d2ba2
Arg [4] : 0000000000000000000000003e3e5996e1cb5c61eec0956b064a114d00dfdda1
Arg [5] : 0000000000000000000000000036e884cab4f427193839788edebb4b92b9a069
Arg [6] : 00000000000000000000000053a1eeb0c182144b27ca0a2010939da33ebc207dLoading...LoadingLoading...Loading
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Loading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingLoading...LoadingMultichain Portfolio | 30 Chains
Chain Token Portfolio % Price Amount Value ETH Ether (ETH)85.26% $3,401.86 1,828.171 $6,219,183.88 ETH 7.99% $94,168 6.1868 $582,599.12 ETH 1.49% $1.39 78,377.1671 $108,591.19 ETH 1.43% $3,512.48 29.6402 $104,110.69 ETH 1.42% $3,500.77 29.6134 $103,669.78 ETH 1.42% $3,505.15 29.5761 $103,668.77 ETH 0.50% $24.22 1,500 $36,330 ETH 0.21% $0.03177 476,086 $15,125.35 ETH 0.11% $3,401.86 2.3792 $8,093.7 ETH 0.09% $0.998732 6,213.1278 $6,205.25 ETH 0.06% $0.931056 5,086.0846 $4,735.43 ETH 0.02% $4,050.84 0.3713 $1,503.92 ETH <0.01% $1 100.9731 $100.97 ETH <0.01% $0.995639 16.17 $16.1 ETH <0.01% $0.998178 14.5251 $14.5 ETH <0.01% $0.9926 7.7638 $7.71 ETH <0.01% $5.25 0.9668 $5.08 ETH <0.01% $1.01 2.5879 $2.6 ETH <0.01% $1.09 2.2465 $2.46 ETH <0.01% $1.04 2.1385 $2.22 ETH <0.01% $1 1.9749 $1.98 ETH <0.01% $0.986789 1.8431 $1.82 ETH <0.01% $3,403.55 0.00050069 $1.7 ETH <0.01% $3,409.79 0.00049831 $1.7 ETH <0.01% $1 1.3934 $1.39 ETH <0.01% $1 0.6041 $0.6041 ETH <0.01% $0.500716 1.0554 $0.5284 ETH <0.01% $0.07249 1.7564 $0.1273 Loading...Loading[ Download: CSV Export ][ 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.
Address QR Code
My Address - Private Name Tag or Note
My Name Tag:
Private Name Tags (up to 35 characters) can be used for easy identification of addressesPrivate Note:
A private note (up to 500 characters) can be attached to this address.
Please DO NOT store any passwords or private keys here.Compiler specific version warnings:
The compiled contract might be susceptible to VerbatimInvalidDeduplication (low-severity), FullInlinerNonExpressionSplitArgumentEvaluationOrder (low-severity), MissingSideEffectsOnSelectorAccess (low-severity) Solidity Compiler Bugs.
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