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Contract Name:
ZkBobPool
Compiler Version
v0.8.15+commit.e14f2714
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@uniswap/v3-periphery/contracts/interfaces/ISwapRouter.sol"; import "@uniswap/v3-periphery/contracts/interfaces/IPeripheryImmutableState.sol"; import "@uniswap/v3-periphery/contracts/interfaces/external/IWETH9.sol"; import "../interfaces/ITransferVerifier.sol"; import "../interfaces/ITreeVerifier.sol"; import "../interfaces/IMintableERC20.sol"; import "../interfaces/IOperatorManager.sol"; import "../interfaces/IERC20Permit.sol"; import "../interfaces/ITokenSeller.sol"; import "./utils/Parameters.sol"; import "./utils/ZkBobAccounting.sol"; import "../utils/Ownable.sol"; import "../proxy/EIP1967Admin.sol"; /** * @title ZkBobPool * Shielded transactions pool for BOB tokens. */ contract ZkBobPool is EIP1967Admin, Ownable, Parameters, ZkBobAccounting { using SafeERC20 for IERC20; uint256 internal constant MAX_POOL_ID = 0xffffff; uint256 internal constant TOKEN_DENOMINATOR = 1_000_000_000; uint256 public immutable pool_id; ITransferVerifier public immutable transfer_verifier; ITreeVerifier public immutable tree_verifier; address public immutable token; IOperatorManager public operatorManager; mapping(uint256 => uint256) public nullifiers; mapping(uint256 => uint256) public roots; bytes32 public all_messages_hash; mapping(address => uint256) public accumulatedFee; ITokenSeller public tokenSeller; event UpdateTokenSeller(address seller); event UpdateOperatorManager(address manager); event WithdrawFee(address indexed operator, uint256 fee); event Message(uint256 indexed index, bytes32 indexed hash, bytes message); constructor(uint256 __pool_id, address _token, ITransferVerifier _transfer_verifier, ITreeVerifier _tree_verifier) { require(__pool_id <= MAX_POOL_ID, "ZkBobPool: exceeds max pool id"); require(Address.isContract(_token), "ZkBobPool: not a contract"); require(Address.isContract(address(_transfer_verifier)), "ZkBobPool: not a contract"); require(Address.isContract(address(_tree_verifier)), "ZkBobPool: not a contract"); pool_id = __pool_id; token = _token; transfer_verifier = _transfer_verifier; tree_verifier = _tree_verifier; } /** * @dev Throws if called by any account other than the current relayer operator. */ modifier onlyOperator() { require(operatorManager.isOperator(_msgSender()), "ZkBobPool: not an operator"); _; } /** * @dev Initializes pool proxy storage. * Callable only once and only through EIP1967Proxy constructor / upgradeToAndCall. * @param _root initial empty merkle tree root. * @param _tvlCap initial upper cap on the entire pool tvl, 18 decimals. * @param _dailyDepositCap initial daily limit on the sum of all deposits, 18 decimals. * @param _dailyWithdrawalCap initial daily limit on the sum of all withdrawals, 18 decimals. * @param _dailyUserDepositCap initial daily limit on the sum of all per-address deposits, 18 decimals. * @param _dailyUserDepositCap initial daily limit on the sum of all per-address deposits, 18 decimals. * @param _depositCap initial limit on the amount of a single deposit, 18 decimals. */ function initialize( uint256 _root, uint256 _tvlCap, uint256 _dailyDepositCap, uint256 _dailyWithdrawalCap, uint256 _dailyUserDepositCap, uint256 _depositCap ) external { require(msg.sender == address(this), "ZkBobPool: not initializer"); require(roots[0] == 0, "ZkBobPool: already initialized"); require(_root != 0, "ZkBobPool: zero root"); roots[0] = _root; _setLimits( 0, _tvlCap / TOKEN_DENOMINATOR, _dailyDepositCap / TOKEN_DENOMINATOR, _dailyWithdrawalCap / TOKEN_DENOMINATOR, _dailyUserDepositCap / TOKEN_DENOMINATOR, _depositCap / TOKEN_DENOMINATOR ); } /** * @dev Updates token seller contract used for native coin withdrawals. * Callable only by the contract owner / proxy admin. * @param _seller new token seller contract implementation. address(0) will deactivate native withdrawals. */ function setTokenSeller(address _seller) external onlyOwner { tokenSeller = ITokenSeller(_seller); emit UpdateTokenSeller(_seller); } /** * @dev Updates used operator manager contract. * Callable only by the contract owner / proxy admin. * @param _operatorManager new operator manager implementation. */ function setOperatorManager(IOperatorManager _operatorManager) external onlyOwner { require(address(_operatorManager) != address(0), "ZkBobPool: manager is zero address"); operatorManager = _operatorManager; emit UpdateOperatorManager(address(_operatorManager)); } /** * @dev Tells the denominator for converting BOB into zkBOB units. * 1e18 BOB units = 1e9 zkBOB units. */ function denominator() external pure returns (uint256) { return TOKEN_DENOMINATOR; } /** * @dev Tells the current merkle tree index, which will be used for the next operation. * Each operation increases merkle tree size by 128, so index is equal to the total number of seen operations, multiplied by 128. * @return next operator merkle index. */ function pool_index() external view returns (uint256) { return _txCount() << 7; } function _root() internal view override returns (uint256) { return roots[_transfer_index()]; } function _pool_id() internal view override returns (uint256) { return pool_id; } /** * @dev Perform a zkBob pool transaction. * Callable only by the current operator. * Method uses a custom ABI encoding scheme described in CustomABIDecoder. * Single transact() call performs either deposit, withdrawal or shielded transfer operation. */ function transact() external onlyOperator { address user; uint256 txType = _tx_type(); if (txType == 0) { user = _deposit_spender(); } else if (txType == 2) { user = _memo_receiver(); } else if (txType == 3) { user = _memo_permit_holder(); } int256 transfer_token_delta = _transfer_token_amount(); (,, uint256 txCount) = _recordOperation(user, transfer_token_delta); uint256 nullifier = _transfer_nullifier(); { uint256 _pool_index = txCount << 7; require(nullifiers[nullifier] == 0, "ZkBobPool: doublespend detected"); require(_transfer_index() <= _pool_index, "ZkBobPool: transfer index out of bounds"); require(transfer_verifier.verifyProof(_transfer_pub(), _transfer_proof()), "ZkBobPool: bad transfer proof"); require( tree_verifier.verifyProof(_tree_pub(roots[_pool_index]), _tree_proof()), "ZkBobPool: bad tree proof" ); nullifiers[nullifier] = uint256(keccak256(abi.encodePacked(_transfer_out_commit(), _transfer_delta()))); _pool_index += 128; roots[_pool_index] = _tree_root_after(); bytes memory message = _memo_message(); bytes32 message_hash = keccak256(message); bytes32 _all_messages_hash = keccak256(abi.encodePacked(all_messages_hash, message_hash)); all_messages_hash = _all_messages_hash; emit Message(_pool_index, _all_messages_hash, message); } uint256 fee = _memo_fee(); int256 token_amount = transfer_token_delta + int256(fee); int256 energy_amount = _transfer_energy_amount(); if (txType == 0) { // Deposit require(transfer_token_delta > 0 && energy_amount == 0, "ZkBobPool: incorrect deposit amounts"); IERC20(token).safeTransferFrom(user, address(this), uint256(token_amount) * TOKEN_DENOMINATOR); } else if (txType == 1) { // Transfer require(token_amount == 0 && energy_amount == 0, "ZkBobPool: incorrect transfer amounts"); } else if (txType == 2) { // Withdraw require(token_amount <= 0 && energy_amount <= 0, "ZkBobPool: incorrect withdraw amounts"); uint256 native_amount = _memo_native_amount() * TOKEN_DENOMINATOR; uint256 withdraw_amount = uint256(-token_amount) * TOKEN_DENOMINATOR; if (native_amount > 0) { ITokenSeller seller = tokenSeller; if (address(seller) != address(0)) { IERC20(token).safeTransfer(address(seller), native_amount); (, uint256 refunded) = seller.sellForETH(user, native_amount); withdraw_amount = withdraw_amount - native_amount + refunded; } } if (withdraw_amount > 0) { IERC20(token).safeTransfer(user, withdraw_amount); } // energy withdrawals are not yet implemented, any transaction with non-zero energy_amount will revert // future version of the protocol will support energy withdrawals through negative energy_amount if (energy_amount < 0) { revert("ZkBobPool: XP claiming is not yet enabled"); } } else if (txType == 3) { // Permittable token deposit require(transfer_token_delta > 0 && energy_amount == 0, "ZkBobPool: incorrect deposit amounts"); (uint8 v, bytes32 r, bytes32 s) = _permittable_deposit_signature(); IERC20Permit(token).receiveWithSaltedPermit( user, uint256(token_amount) * TOKEN_DENOMINATOR, _memo_permit_deadline(), bytes32(nullifier), v, r, s ); } else { revert("ZkBobPool: Incorrect transaction type"); } if (fee > 0) { accumulatedFee[msg.sender] += fee; } } /** * @dev Withdraws accumulated fee on behalf of an operator. * Callable only by the operator itself, or by a pre-configured operator fee receiver address. * @param _operator address of an operator account to withdraw fee from. * @param _to address of the accumulated fee tokens receiver. */ function withdrawFee(address _operator, address _to) external { require( _operator == msg.sender || operatorManager.isOperatorFeeReceiver(_operator, msg.sender), "ZkBobPool: not authorized" ); uint256 fee = accumulatedFee[_operator] * TOKEN_DENOMINATOR; require(fee > 0, "ZkBobPool: no fee to withdraw"); IERC20(token).safeTransfer(_to, fee); accumulatedFee[_operator] = 0; emit WithdrawFee(_operator, fee); } /** * @dev Updates pool usage limits. * Callable only by the contract owner / proxy admin. * @param _tier pool limits tier (0-254). * @param _tvlCap new upper cap on the entire pool tvl, 18 decimals. * @param _dailyDepositCap new daily limit on the sum of all deposits, 18 decimals. * @param _dailyWithdrawalCap new daily limit on the sum of all withdrawals, 18 decimals. * @param _dailyUserDepositCap new daily limit on the sum of all per-address deposits, 18 decimals. * @param _dailyUserDepositCap new daily limit on the sum of all per-address deposits, 18 decimals. * @param _depositCap new limit on the amount of a single deposit, 18 decimals. */ function setLimits( uint8 _tier, uint256 _tvlCap, uint256 _dailyDepositCap, uint256 _dailyWithdrawalCap, uint256 _dailyUserDepositCap, uint256 _depositCap ) external onlyOwner { _setLimits( _tier, _tvlCap / TOKEN_DENOMINATOR, _dailyDepositCap / TOKEN_DENOMINATOR, _dailyWithdrawalCap / TOKEN_DENOMINATOR, _dailyUserDepositCap / TOKEN_DENOMINATOR, _depositCap / TOKEN_DENOMINATOR ); } /** * @dev Resets daily limit usage for the current day. * Callable only by the contract owner / proxy admin. */ function resetDailyLimits() external onlyOwner { _resetDailyLimits(); } /** * @dev Updates users limit tiers. * Callable only by the contract owner / proxy admin. * @param _tier pool limits tier (0-255). * 0 is the default tier. * 1-254 are custom pool limit tiers, configured at runtime. * 255 is the special tier with zero limits, used to effectively prevent some address from accessing the pool. * @param _users list of user account addresses to assign a tier for. */ function setUsersTier(uint8 _tier, address[] memory _users) external onlyOwner { _setUsersTier(_tier, _users); } /** * @dev Tells if caller is the contract owner. * Gives ownership rights to the proxy admin as well. * @return true, if caller is the contract owner or proxy admin. */ function _isOwner() internal view override returns (bool) { return super._isOwner() || _admin() == _msgSender(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (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 v4.4.1 (token/ERC20/extensions/draft-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. */ 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]. */ 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 v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-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; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } 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)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } 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"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } 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"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return 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 v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_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) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @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); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "../Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } else if (error == RecoverError.InvalidSignatureV) { revert("ECDSA: invalid signature 'v' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { // Check the signature length // - case 65: r,s,v signature (standard) // - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._ if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else if (signature.length == 64) { bytes32 r; bytes32 vs; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) } return tryRecover(hash, r, vs); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } if (v != 27 && v != 28) { return (address(0), RecoverError.InvalidSignatureV); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Callback for IUniswapV3PoolActions#swap /// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface interface IUniswapV3SwapCallback { /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap. /// @dev In the implementation you must pay the pool tokens owed for the swap. /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory. /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped. /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token0 to the pool. /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token1 to the pool. /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /// @title Immutable state /// @notice Functions that return immutable state of the router interface IPeripheryImmutableState { /// @return Returns the address of the Uniswap V3 factory function factory() external view returns (address); /// @return Returns the address of WETH9 function WETH9() external view returns (address); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.7.5; pragma abicoder v2; import '@uniswap/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol'; /// @title Router token swapping functionality /// @notice Functions for swapping tokens via Uniswap V3 interface ISwapRouter is IUniswapV3SwapCallback { struct ExactInputSingleParams { address tokenIn; address tokenOut; uint24 fee; address recipient; uint256 deadline; uint256 amountIn; uint256 amountOutMinimum; uint160 sqrtPriceLimitX96; } /// @notice Swaps `amountIn` of one token for as much as possible of another token /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata /// @return amountOut The amount of the received token function exactInputSingle(ExactInputSingleParams calldata params) external payable returns (uint256 amountOut); struct ExactInputParams { bytes path; address recipient; uint256 deadline; uint256 amountIn; uint256 amountOutMinimum; } /// @notice Swaps `amountIn` of one token for as much as possible of another along the specified path /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactInputParams` in calldata /// @return amountOut The amount of the received token function exactInput(ExactInputParams calldata params) external payable returns (uint256 amountOut); struct ExactOutputSingleParams { address tokenIn; address tokenOut; uint24 fee; address recipient; uint256 deadline; uint256 amountOut; uint256 amountInMaximum; uint160 sqrtPriceLimitX96; } /// @notice Swaps as little as possible of one token for `amountOut` of another token /// @param params The parameters necessary for the swap, encoded as `ExactOutputSingleParams` in calldata /// @return amountIn The amount of the input token function exactOutputSingle(ExactOutputSingleParams calldata params) external payable returns (uint256 amountIn); struct ExactOutputParams { bytes path; address recipient; uint256 deadline; uint256 amountOut; uint256 amountInMaximum; } /// @notice Swaps as little as possible of one token for `amountOut` of another along the specified path (reversed) /// @param params The parameters necessary for the multi-hop swap, encoded as `ExactOutputParams` in calldata /// @return amountIn The amount of the input token function exactOutput(ExactOutputParams calldata params) external payable returns (uint256 amountIn); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity =0.8.15; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; /// @title Interface for WETH9 interface IWETH9 is IERC20 { /// @notice Deposit ether to get wrapped ether function deposit() external payable; /// @notice Withdraw wrapped ether to get ether function withdraw(uint256) external; }
// SPDX-License-Identifier: CC0-1.0 pragma solidity 0.8.15; interface IERC20Permit { function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; function nonces(address owner) external view returns (uint256); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external view returns (bytes32); function SALTED_PERMIT_TYPEHASH() external view returns (bytes32); function receiveWithPermit( address _holder, uint256 _value, uint256 _deadline, uint8 _v, bytes32 _r, bytes32 _s ) external; function receiveWithSaltedPermit( address _holder, uint256 _value, uint256 _deadline, bytes32 _salt, uint8 _v, bytes32 _r, bytes32 _s ) external; }
// SPDX-License-Identifier: CC0-1.0 pragma solidity 0.8.15; interface IMintableERC20 { function mint(address to, uint256 amount) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; interface IOperatorManager { function isOperator(address _addr) external view returns (bool); function isOperatorFeeReceiver(address _operator, address _addr) external view returns (bool); function operatorURI() external view returns (string memory); }
// SPDX-License-Identifier: CC0-1.0 pragma solidity 0.8.15; interface ITokenSeller { /** * @dev Sells tokens for ETH. * Prior to calling this function, contract balance of token0 should be greater than or equal to the sold amount. * @param _receiver native ETH receiver. * @param _amount amount of tokens to sell. * @return (received eth amount, refunded token amount). */ function sellForETH(address _receiver, uint256 _amount) external returns (uint256, uint256); /** * @dev Estimates amount of received ETH, when selling given amount of tokens via sellForETH function. * @param _amount amount of tokens to sell. * @return received eth amount. */ function quoteSellForETH(uint256 _amount) external returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; interface ITransferVerifier { function verifyProof(uint256[5] memory input, uint256[8] memory p) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; interface ITreeVerifier { function verifyProof(uint256[3] memory input, uint256[8] memory p) external view returns (bool); }
// SPDX-License-Identifier: CC0-1.0 pragma solidity 0.8.15; /** * @title EIP1967Admin * @dev Upgradeable proxy pattern implementation according to minimalistic EIP1967. */ contract EIP1967Admin { // EIP 1967 // bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1) uint256 internal constant EIP1967_ADMIN_STORAGE = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; modifier onlyAdmin() { require(msg.sender == _admin(), "EIP1967Admin: not an admin"); _; } function _admin() internal view returns (address res) { assembly { res := sload(EIP1967_ADMIN_STORAGE) } } }
// SPDX-License-Identifier: CC0-1.0 pragma solidity 0.8.15; import "@openzeppelin/contracts/access/Ownable.sol" as OZOwnable; /** * @title Ownable */ contract Ownable is OZOwnable.Ownable { /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view override { require(_isOwner(), "Ownable: caller is not the owner"); } /** * @dev Tells if caller is the contract owner. * @return true, if caller is the contract owner. */ function _isOwner() internal view virtual returns (bool) { return owner() == _msgSender(); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; contract CustomABIDecoder { uint256 constant transfer_nullifier_pos = 4; uint256 constant transfer_nullifier_size = 32; uint256 constant uint256_size = 32; function _loaduint256(uint256 pos) internal pure returns (uint256 r) { assembly { r := calldataload(pos) } } function _transfer_nullifier() internal pure returns (uint256 r) { r = _loaduint256(transfer_nullifier_pos); } uint256 constant transfer_out_commit_pos = transfer_nullifier_pos + transfer_nullifier_size; uint256 constant transfer_out_commit_size = 32; function _transfer_out_commit() internal pure returns (uint256 r) { r = _loaduint256(transfer_out_commit_pos); } uint256 constant transfer_index_pos = transfer_out_commit_pos + transfer_out_commit_size; uint256 constant transfer_index_size = 6; function _transfer_index() internal pure returns (uint48 r) { r = uint48(_loaduint256(transfer_index_pos + transfer_index_size - uint256_size)); } uint256 constant transfer_energy_amount_pos = transfer_index_pos + transfer_index_size; uint256 constant transfer_energy_amount_size = 14; function _transfer_energy_amount() internal pure returns (int112 r) { r = int112(uint112(_loaduint256(transfer_energy_amount_pos + transfer_energy_amount_size - uint256_size))); } uint256 constant transfer_token_amount_pos = transfer_energy_amount_pos + transfer_energy_amount_size; uint256 constant transfer_token_amount_size = 8; function _transfer_token_amount() internal pure returns (int64 r) { r = int64(uint64(_loaduint256(transfer_token_amount_pos + transfer_token_amount_size - uint256_size))); } uint256 constant transfer_proof_pos = transfer_token_amount_pos + transfer_token_amount_size; uint256 constant transfer_proof_size = 256; function _transfer_proof() internal pure returns (uint256[8] calldata r) { uint256 pos = transfer_proof_pos; assembly { r := pos } } uint256 constant tree_root_after_pos = transfer_proof_pos + transfer_proof_size; uint256 constant tree_root_after_size = 32; function _tree_root_after() internal pure returns (uint256 r) { r = _loaduint256(tree_root_after_pos); } uint256 constant tree_proof_pos = tree_root_after_pos + tree_root_after_size; uint256 constant tree_proof_size = 256; function _tree_proof() internal pure returns (uint256[8] calldata r) { uint256 pos = tree_proof_pos; assembly { r := pos } } uint256 constant tx_type_pos = tree_proof_pos + tree_proof_size; uint256 constant tx_type_size = 2; uint256 constant tx_type_mask = (1 << (tx_type_size * 8)) - 1; function _tx_type() internal pure returns (uint256 r) { r = _loaduint256(tx_type_pos + tx_type_size - uint256_size) & tx_type_mask; } uint256 constant memo_data_size_pos = tx_type_pos + tx_type_size; uint256 constant memo_data_size_size = 2; uint256 constant memo_data_size_mask = (1 << (memo_data_size_size * 8)) - 1; uint256 constant memo_data_pos = memo_data_size_pos + memo_data_size_size; function _memo_data_size() internal pure returns (uint256 r) { r = _loaduint256(memo_data_size_pos + memo_data_size_size - uint256_size) & memo_data_size_mask; } function _memo_data() internal pure returns (bytes calldata r) { uint256 offset = memo_data_pos; uint256 length = _memo_data_size(); assembly { r.offset := offset r.length := length } } function _sign_r_vs_pos() internal pure returns (uint256) { return memo_data_pos + _memo_data_size(); } uint256 constant sign_r_vs_size = 64; function _sign_r_vs() internal pure returns (bytes32 r, bytes32 vs) { uint256 offset = _sign_r_vs_pos(); assembly { r := calldataload(offset) vs := calldataload(add(offset, 32)) } } uint256 constant transfer_delta_size = transfer_index_size + transfer_energy_amount_size + transfer_token_amount_size; uint256 constant transfer_delta_mask = (1 << (transfer_delta_size * 8)) - 1; function _transfer_delta() internal pure returns (uint256 r) { r = _loaduint256(transfer_index_pos + transfer_delta_size - uint256_size) & transfer_delta_mask; } function _memo_fixed_size() internal pure returns (uint256 r) { uint256 t = _tx_type(); if (t == 0 || t == 1) { // fee // 8 r = 8; } else if (t == 2) { // fee + native amount + recipient // 8 + 8 + 20 r = 36; } else if (t == 3) { // fee + deadline + address // 8 + 8 + 20 r = 36; } else { revert(); } } function _memo_message() internal pure returns (bytes calldata r) { uint256 memo_fixed_size = _memo_fixed_size(); uint256 offset = memo_data_pos + memo_fixed_size; uint256 length = _memo_data_size() - memo_fixed_size; assembly { r.offset := offset r.length := length } } uint256 constant memo_fee_pos = memo_data_pos; uint256 constant memo_fee_size = 8; uint256 constant memo_fee_mask = (1 << (memo_fee_size * 8)) - 1; function _memo_fee() internal pure returns (uint256 r) { r = _loaduint256(memo_fee_pos + memo_fee_size - uint256_size) & memo_fee_mask; } // Withdraw specific data uint256 constant memo_native_amount_pos = memo_fee_pos + memo_fee_size; uint256 constant memo_native_amount_size = 8; uint256 constant memo_native_amount_mask = (1 << (memo_native_amount_size * 8)) - 1; function _memo_native_amount() internal pure returns (uint256 r) { r = _loaduint256(memo_native_amount_pos + memo_native_amount_size - uint256_size) & memo_native_amount_mask; } uint256 constant memo_receiver_pos = memo_native_amount_pos + memo_native_amount_size; uint256 constant memo_receiver_size = 20; function _memo_receiver() internal pure returns (address r) { r = address(uint160(_loaduint256(memo_receiver_pos + memo_receiver_size - uint256_size))); } // Permittable token deposit specific data uint256 constant memo_permit_deadline_pos = memo_fee_pos + memo_fee_size; uint256 constant memo_permit_deadline_size = 8; function _memo_permit_deadline() internal pure returns (uint64 r) { r = uint64(_loaduint256(memo_permit_deadline_pos + memo_permit_deadline_size - uint256_size)); } uint256 constant memo_permit_holder_pos = memo_permit_deadline_pos + memo_permit_deadline_size; uint256 constant memo_permit_holder_size = 20; function _memo_permit_holder() internal pure returns (address r) { r = address(uint160(_loaduint256(memo_permit_holder_pos + memo_permit_holder_size - uint256_size))); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.15; import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol"; import "./CustomABIDecoder.sol"; abstract contract Parameters is CustomABIDecoder { uint256 constant R = 21888242871839275222246405745257275088548364400416034343698204186575808495617; bytes32 constant S_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff; function _root() internal view virtual returns (uint256); function _pool_id() internal view virtual returns (uint256); function _transfer_pub() internal view returns (uint256[5] memory r) { r[0] = _root(); r[1] = _transfer_nullifier(); r[2] = _transfer_out_commit(); r[3] = _transfer_delta() + (_pool_id() << (transfer_delta_size * 8)); r[4] = uint256(keccak256(_memo_data())) % R; } function _tree_pub(uint256 _root_before) internal view returns (uint256[3] memory r) { r[0] = _root_before; r[1] = _tree_root_after(); r[2] = _transfer_out_commit(); } // NOTE only valid in the context of normal deposit (tx_type=0) function _deposit_spender() internal pure returns (address) { (bytes32 r, bytes32 vs) = _sign_r_vs(); return ECDSA.recover(ECDSA.toEthSignedMessageHash(bytes32(_transfer_nullifier())), r, vs); } // NOTE only valid in the context of permittable token deposit (tx_type=3) function _permittable_deposit_signature() internal pure returns (uint8, bytes32, bytes32) { (bytes32 r, bytes32 vs) = _sign_r_vs(); return (uint8((uint256(vs) >> 255) + 27), r, vs & S_MASK); } }
// SPDX-License-Identifier: CC0-1.0 pragma solidity 0.8.15; /** * @title ZkBobAccounting * @dev On chain accounting for zkBob operations, limits and stats. * Units: 1 BOB = 1e18 wei = 1e9 zkBOB units * Limitations: Contract will only work correctly as long as pool tvl does not exceed 4.7e12 BOB (4.7 trillion) * and overall transaction count does not exceed 4.3e9 (4.3 billion). Pool usage limits cannot exceed 4.3e9 BOB (4.3 billion) per day. */ contract ZkBobAccounting { uint256 internal constant PRECISION = 1_000_000_000; uint256 internal constant SLOT_DURATION = 1 hours; uint256 internal constant DAY_SLOTS = 1 days / SLOT_DURATION; uint256 internal constant WEEK_SLOTS = 1 weeks / SLOT_DURATION; struct Slot0 { // max seen average tvl over period of at least 1 week (granularity of 1e9), might not be precise // max possible tvl - type(uint56).max * 1e9 zkBOB units ~= 7.2e16 BOB uint56 maxWeeklyAvgTvl; // max number of pool interactions over 1 week, might not be precise // max possible tx count - type(uint32).max ~= 4.3e9 transactions uint32 maxWeeklyTxCount; // 1 week behind snapshot time slot (granularity of 1 hour) // max possible timestamp - Dec 08 3883 uint24 tailSlot; // active snapshot time slot (granularity of 1 hour) // max possible timestamp - Dec 08 3883 uint24 headSlot; // cumulative sum of tvl over txCount interactions (granularity of 1e9) // max possible cumulative tvl ~= type(uint32).max * type(uint56).max = 4.3e9 transactions * 7.2e16 BOB uint88 cumTvl; // number of successful pool interactions since launch // max possible tx count - type(uint32).max ~= 4.3e9 transactions uint32 txCount; } struct Slot1 { // current pool tvl (granularity of 1) // max possible tvl - type(uint72).max * 1 zkBOB units ~= 4.7e21 zkBOB units ~= 4.7e12 BOB uint72 tvl; // today deposit sum (granularity of 1e9) // max possible sum - type(uint32).max * 1e9 zkBOB units ~= 4.3e9 BOB uint32 dailyDeposit; // today withdrawal sum (granularity of 1e9) // max possible sum - type(uint32).max * 1e9 zkBOB units ~= 4.3e9 BOB uint32 dailyWithdrawal; } struct PoolLimits { // max cap on the entire pool tvl (granularity of 1e9) // max possible cap - type(uint56).max * 1e9 zkBOB units ~= 7.2e16 BOB uint56 tvlCap; // max cap on the daily deposits sum (granularity of 1e9) // max possible cap - type(uint32).max * 1e9 zkBOB units ~= 4.3e9 BOB uint32 dailyDepositCap; // max cap on the daily withdrawal sum (granularity of 1e9) // max possible cap - type(uint32).max * 1e9 zkBOB units ~= 4.3e9 BOB uint32 dailyWithdrawalCap; // max cap on the daily deposits sum for single user (granularity of 1e9) // max possible cap - type(uint32).max * 1e9 zkBOB units ~= 4.3e9 BOB uint32 dailyUserDepositCap; // max cap on single deposit (granularity of 1e9) // max possible cap - type(uint32).max * 1e9 zkBOB units ~= 4.3e9 BOB uint32 depositCap; } struct Snapshot { uint24 nextSlot; // next slot to from the queue uint32 txCount; // number of successful pool interactions since launch at the time of the snapshot uint88 cumTvl; // cumulative sum of tvl over txCount interactions (granularity of 1e9) } struct UserStats { uint16 day; // last update day number uint72 dailyDeposit; // sum of user deposits during given day uint8 tier; // user limits tier, 0 being the default tier } struct Limits { uint256 tvlCap; uint256 tvl; uint256 dailyDepositCap; uint256 dailyDepositCapUsage; uint256 dailyWithdrawalCap; uint256 dailyWithdrawalCapUsage; uint256 dailyUserDepositCap; uint256 dailyUserDepositCapUsage; uint256 depositCap; uint8 tier; } Slot0 private slot0; Slot1 private slot1; mapping(uint256 => PoolLimits) private poolLimits; // pool limits per tier mapping(uint256 => Snapshot) private snapshots; // single linked list of hourly snapshots mapping(address => UserStats) private userStats; event UpdateLimits(uint8 indexed tier, PoolLimits limits); event UpdateTier(address user, uint8 tier); /** * @dev Returns currently configured limits and remaining quotas for the given user as of the current block. * @param _user user for which to retrieve limits. * @return limits (denominated in zkBOB units = 1e-9 BOB) */ function getLimitsFor(address _user) external view returns (Limits memory) { Slot0 memory s0 = slot0; Slot1 memory s1 = slot1; UserStats memory us = userStats[_user]; PoolLimits memory pl = poolLimits[uint256(us.tier)]; uint24 curSlot = uint24(block.timestamp / SLOT_DURATION); uint24 today = curSlot / uint24(DAY_SLOTS); return Limits({ tvlCap: pl.tvlCap * PRECISION, tvl: s1.tvl, dailyDepositCap: pl.dailyDepositCap * PRECISION, dailyDepositCapUsage: (s0.headSlot / DAY_SLOTS == today) ? s1.dailyDeposit * PRECISION : 0, dailyWithdrawalCap: pl.dailyWithdrawalCap * PRECISION, dailyWithdrawalCapUsage: (s0.headSlot / DAY_SLOTS == today) ? s1.dailyWithdrawal * PRECISION : 0, dailyUserDepositCap: pl.dailyUserDepositCap * PRECISION, dailyUserDepositCapUsage: (us.day == today) ? us.dailyDeposit : 0, depositCap: pl.depositCap * PRECISION, tier: us.tier }); } function _recordOperation( address _user, int256 _txAmount ) internal returns (uint56 maxWeeklyAvgTvl, uint32 maxWeeklyTxCount, uint256 txCount) { Slot0 memory s0 = slot0; Slot1 memory s1 = slot1; uint24 curSlot = uint24(block.timestamp / SLOT_DURATION); txCount = uint256(s0.txCount); // for full correctness, next line should use "while" instead of "if" // however, in order to keep constant gas usage, "if" is being used // this can lead to a longer sliding window (> 1 week) in some cases, // but eventually it will converge back to the 1 week target if (s0.txCount > 0 && curSlot - s0.tailSlot > WEEK_SLOTS) { // if tail is more than 1 week behind, we move tail pointer to the next snapshot Snapshot memory sn = snapshots[s0.tailSlot]; delete snapshots[s0.tailSlot]; s0.tailSlot = sn.nextSlot; uint32 weeklyTxCount = s0.txCount - sn.txCount; if (weeklyTxCount > s0.maxWeeklyTxCount) { s0.maxWeeklyTxCount = weeklyTxCount; } uint56 avgTvl = uint56((s0.cumTvl - sn.cumTvl) / weeklyTxCount); if (avgTvl > s0.maxWeeklyAvgTvl) { s0.maxWeeklyAvgTvl = avgTvl; } } if (s0.headSlot < curSlot) { snapshots[s0.headSlot] = Snapshot(curSlot, s0.txCount, s0.cumTvl); } // update head stats s0.cumTvl += s1.tvl / uint72(PRECISION); s0.txCount++; _processTVLChange(s0, s1, _user, _txAmount); s0.headSlot = curSlot; slot0 = s0; return (s0.maxWeeklyAvgTvl, s0.maxWeeklyTxCount, txCount); } function _processTVLChange(Slot0 memory s0, Slot1 memory s1, address _user, int256 _txAmount) internal { uint16 curDay = uint16(block.timestamp / SLOT_DURATION / DAY_SLOTS); bool isDayTransition = curDay > s0.headSlot / DAY_SLOTS; if (_txAmount == 0) { if (isDayTransition) { (s1.dailyDeposit, s1.dailyWithdrawal) = (0, 0); slot1 = s1; } return; } UserStats memory us = userStats[_user]; PoolLimits memory pl = poolLimits[us.tier]; if (_txAmount > 0) { uint256 depositAmount = uint256(_txAmount); s1.tvl += uint72(depositAmount); // check all sorts of limits when processing a deposit require(depositAmount <= uint256(pl.depositCap) * PRECISION, "ZkBobAccounting: single deposit cap exceeded"); require(uint256(s1.tvl) <= uint256(pl.tvlCap) * PRECISION, "ZkBobAccounting: tvl cap exceeded"); if (curDay > us.day) { // user snapshot is outdated, day number and daily sum could be reset userStats[_user] = UserStats(curDay, uint72(depositAmount), us.tier); } else { us.dailyDeposit += uint72(depositAmount); require( uint256(us.dailyDeposit) <= uint256(pl.dailyUserDepositCap) * PRECISION, "ZkBobAccounting: daily user deposit cap exceeded" ); userStats[_user] = us; } if (isDayTransition) { // latest deposit was on an earlier day, reset daily deposit sum s1.dailyDeposit = uint32(depositAmount / PRECISION); s1.dailyWithdrawal = 0; } else { s1.dailyDeposit += uint32(depositAmount / PRECISION); require(s1.dailyDeposit <= pl.dailyDepositCap, "ZkBobAccounting: daily deposit cap exceeded"); } } else { uint256 withdrawAmount = uint256(-_txAmount); require(withdrawAmount <= type(uint32).max * PRECISION, "ZkBobAccounting: withdrawal amount too large"); s1.tvl -= uint72(withdrawAmount); if (isDayTransition) { s1.dailyDeposit = 0; // latest withdrawal was on an earlier day, reset daily deposit sum s1.dailyWithdrawal = uint32(withdrawAmount / PRECISION); } else { s1.dailyWithdrawal += uint32(withdrawAmount / PRECISION); require(s1.dailyWithdrawal <= pl.dailyWithdrawalCap, "ZkBobAccounting: daily withdrawal cap exceeded"); } } slot1 = s1; } function _resetDailyLimits() internal { (slot1.dailyDeposit, slot1.dailyWithdrawal) = (0, 0); } function _setLimits( uint8 _tier, uint256 _tvlCap, uint256 _dailyDepositCap, uint256 _dailyWithdrawalCap, uint256 _dailyUserDepositCap, uint256 _depositCap ) internal { require(_tier < 255, "ZkBobAccounting: invalid limit tier"); require(_depositCap > 0, "ZkBobAccounting: zero deposit cap"); require(_tvlCap <= type(uint56).max * PRECISION, "ZkBobAccounting: tvl cap too large"); require(_dailyDepositCap <= type(uint32).max * PRECISION, "ZkBobAccounting: daily deposit cap too large"); require(_dailyWithdrawalCap <= type(uint32).max * PRECISION, "ZkBobAccounting: daily withdrawal cap too large"); require(_dailyUserDepositCap >= _depositCap, "ZkBobAccounting: daily user deposit cap too low"); require(_dailyDepositCap >= _dailyUserDepositCap, "ZkBobAccounting: daily deposit cap too low"); require(_tvlCap >= _dailyDepositCap, "ZkBobAccounting: tvl cap too low"); require(_dailyWithdrawalCap > 0, "ZkBobAccounting: zero daily withdrawal cap"); PoolLimits memory pl = PoolLimits({ tvlCap: uint56(_tvlCap / PRECISION), dailyDepositCap: uint32(_dailyDepositCap / PRECISION), dailyWithdrawalCap: uint32(_dailyWithdrawalCap / PRECISION), dailyUserDepositCap: uint32(_dailyUserDepositCap / PRECISION), depositCap: uint32(_depositCap / PRECISION) }); poolLimits[_tier] = pl; emit UpdateLimits(_tier, pl); } function _setUsersTier(uint8 _tier, address[] memory _users) internal { require(_tier == 255 || poolLimits[uint256(_tier)].tvlCap > 0, "ZkBobAccounting: non-existing pool limits tier"); for (uint256 i = 0; i < _users.length; i++) { address user = _users[i]; userStats[user].tier = _tier; emit UpdateTier(user, _tier); } } function _txCount() internal view returns (uint256) { return slot0.txCount; } }
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Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"uint256","name":"__pool_id","type":"uint256"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"contract ITransferVerifier","name":"_transfer_verifier","type":"address"},{"internalType":"contract ITreeVerifier","name":"_tree_verifier","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":true,"internalType":"bytes32","name":"hash","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"message","type":"bytes"}],"name":"Message","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint8","name":"tier","type":"uint8"},{"components":[{"internalType":"uint56","name":"tvlCap","type":"uint56"},{"internalType":"uint32","name":"dailyDepositCap","type":"uint32"},{"internalType":"uint32","name":"dailyWithdrawalCap","type":"uint32"},{"internalType":"uint32","name":"dailyUserDepositCap","type":"uint32"},{"internalType":"uint32","name":"depositCap","type":"uint32"}],"indexed":false,"internalType":"struct ZkBobAccounting.PoolLimits","name":"limits","type":"tuple"}],"name":"UpdateLimits","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"manager","type":"address"}],"name":"UpdateOperatorManager","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint8","name":"tier","type":"uint8"}],"name":"UpdateTier","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"seller","type":"address"}],"name":"UpdateTokenSeller","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"uint256","name":"fee","type":"uint256"}],"name":"WithdrawFee","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"accumulatedFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"all_messages_hash","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"denominator","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getLimitsFor","outputs":[{"components":[{"internalType":"uint256","name":"tvlCap","type":"uint256"},{"internalType":"uint256","name":"tvl","type":"uint256"},{"internalType":"uint256","name":"dailyDepositCap","type":"uint256"},{"internalType":"uint256","name":"dailyDepositCapUsage","type":"uint256"},{"internalType":"uint256","name":"dailyWithdrawalCap","type":"uint256"},{"internalType":"uint256","name":"dailyWithdrawalCapUsage","type":"uint256"},{"internalType":"uint256","name":"dailyUserDepositCap","type":"uint256"},{"internalType":"uint256","name":"dailyUserDepositCapUsage","type":"uint256"},{"internalType":"uint256","name":"depositCap","type":"uint256"},{"internalType":"uint8","name":"tier","type":"uint8"}],"internalType":"struct ZkBobAccounting.Limits","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_root","type":"uint256"},{"internalType":"uint256","name":"_tvlCap","type":"uint256"},{"internalType":"uint256","name":"_dailyDepositCap","type":"uint256"},{"internalType":"uint256","name":"_dailyWithdrawalCap","type":"uint256"},{"internalType":"uint256","name":"_dailyUserDepositCap","type":"uint256"},{"internalType":"uint256","name":"_depositCap","type":"uint256"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"nullifiers","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operatorManager","outputs":[{"internalType":"contract IOperatorManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pool_id","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pool_index","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"resetDailyLimits","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"roots","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"_tier","type":"uint8"},{"internalType":"uint256","name":"_tvlCap","type":"uint256"},{"internalType":"uint256","name":"_dailyDepositCap","type":"uint256"},{"internalType":"uint256","name":"_dailyWithdrawalCap","type":"uint256"},{"internalType":"uint256","name":"_dailyUserDepositCap","type":"uint256"},{"internalType":"uint256","name":"_depositCap","type":"uint256"}],"name":"setLimits","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IOperatorManager","name":"_operatorManager","type":"address"}],"name":"setOperatorManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_seller","type":"address"}],"name":"setTokenSeller","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"_tier","type":"uint8"},{"internalType":"address[]","name":"_users","type":"address[]"}],"name":"setUsersTier","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenSeller","outputs":[{"internalType":"contract ITokenSeller","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"transact","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"transfer_verifier","outputs":[{"internalType":"contract ITransferVerifier","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tree_verifier","outputs":[{"internalType":"contract ITreeVerifier","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_operator","type":"address"},{"internalType":"address","name":"_to","type":"address"}],"name":"withdrawFee","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000b0b195aefa3650a6908f15cdac7d92f8a5791b0b00000000000000000000000051585f5af7b5f0bbf7f91fe8919fbff362a2fd9500000000000000000000000082907eaeb25d248dc82033e45b00a3e012ba2d0d
-----Decoded View---------------
Arg [0] : __pool_id (uint256): 0
Arg [1] : _token (address): 0xB0B195aEFA3650A6908f15CdaC7D92F8a5791B0B
Arg [2] : _transfer_verifier (address): 0x51585f5Af7B5f0bbf7F91fE8919fbfF362A2fd95
Arg [3] : _tree_verifier (address): 0x82907eAeB25D248dC82033E45b00A3E012Ba2d0D
-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [1] : 000000000000000000000000b0b195aefa3650a6908f15cdac7d92f8a5791b0b
Arg [2] : 00000000000000000000000051585f5af7b5f0bbf7f91fe8919fbff362a2fd95
Arg [3] : 00000000000000000000000082907eaeb25d248dc82033e45b00a3e012ba2d0d
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Multichain Portfolio | 31 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.