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ETH Balance
0 ETH
Eth Value
$0.00More Info
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Latest 25 from a total of 32 transactions
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Stake | 19217239 | 195 days ago | IN | 0 ETH | 0.00157954 | ||||
Deposit | 19216968 | 195 days ago | IN | 32 ETH | 0.00143202 | ||||
Stake | 19075448 | 215 days ago | IN | 0 ETH | 0.00163113 | ||||
Deposit | 19075447 | 215 days ago | IN | 96 ETH | 0.00080552 | ||||
Stake | 19074399 | 215 days ago | IN | 0 ETH | 0.00496046 | ||||
Deposit | 19074398 | 215 days ago | IN | 448 ETH | 0.0007076 | ||||
Stake | 19060543 | 217 days ago | IN | 0 ETH | 0.00092856 | ||||
Deposit | 19060542 | 217 days ago | IN | 32 ETH | 0.0051635 | ||||
Stake | 19054643 | 218 days ago | IN | 0 ETH | 0.00089602 | ||||
Deposit | 19054094 | 218 days ago | IN | 32 ETH | 0.00400959 | ||||
Stake | 19038993 | 220 days ago | IN | 0 ETH | 0.02122121 | ||||
Deposit | 19038992 | 220 days ago | IN | 928 ETH | 0.00155899 | ||||
Stake | 19038961 | 220 days ago | IN | 0 ETH | 0.00802437 | ||||
Deposit | 19038960 | 220 days ago | IN | 288 ETH | 0.00157518 | ||||
Stake | 19038942 | 220 days ago | IN | 0 ETH | 0.00150373 | ||||
Deposit | 19038941 | 220 days ago | IN | 32 ETH | 0.00903468 | ||||
Nominate Owner | 19038515 | 220 days ago | IN | 0 ETH | 0.00117057 | ||||
Stake | 19027712 | 222 days ago | IN | 0 ETH | 0.00883291 | ||||
Deposit | 19027711 | 222 days ago | IN | 96 ETH | 0.02789011 | ||||
Stake | 19025081 | 222 days ago | IN | 0 ETH | 0.00383891 | ||||
Deposit | 19025080 | 222 days ago | IN | 64 ETH | 0.00270002 | ||||
Stake | 19025073 | 222 days ago | IN | 0 ETH | 0.00260143 | ||||
Deposit | 19025072 | 222 days ago | IN | 32 ETH | 0.01573614 | ||||
Stake | 18974589 | 229 days ago | IN | 0 ETH | 0.00173151 | ||||
Deposit | 18974588 | 229 days ago | IN | 32 ETH | 0.00189751 |
Latest 25 internal transactions (View All)
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Parent Transaction Hash | Block | From | To | |||
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19217239 | 195 days ago | 32 ETH | ||||
19075448 | 215 days ago | 32 ETH | ||||
19075448 | 215 days ago | 32 ETH | ||||
19075448 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19074399 | 215 days ago | 32 ETH | ||||
19060543 | 217 days ago | 32 ETH | ||||
19060542 | 217 days ago | Contract Creation | 0 ETH | |||
19054643 | 218 days ago | 32 ETH | ||||
19054094 | 218 days ago | Contract Creation | 0 ETH | |||
19038993 | 220 days ago | 32 ETH | ||||
19038993 | 220 days ago | 32 ETH | ||||
19038993 | 220 days ago | 32 ETH |
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Contract Name:
Staking
Compiler Version
v0.8.13+commit.abaa5c0e
Optimization Enabled:
Yes with 200 runs
Other Settings:
london EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity 0.8.13; import {ReentrancyGuard} from "solmate/utils/ReentrancyGuard.sol"; import {IDepositContract} from "src/interfaces/IDepositContract.sol"; import {IStaking} from "src/interfaces/IStaking.sol"; import {Owned} from "src/lib/Owned.sol"; import {Pausable} from "src/lib/Pausable.sol"; import {SafeTransferLib} from "src/lib/SafeTransferLib.sol"; import {FeeRecipient} from "src/FeeRecipient.sol"; import {StakingConstants} from "src/StakingConstants.sol"; contract Staking is IStaking, ReentrancyGuard, Owned, Pausable, StakingConstants { /// @notice Ethereum staking deposit contract address. address public immutable depositContract; /// @notice stakewith.us treasury which receives share of profit from execution layer rewards. address public treasury; /// @notice One-time fee for creating a new validator. uint256 public oneTimeFee; /// @notice Performance fee percentage from execution layer rewards / `FEE_BASIS`, i.e. 10_000 represents 100%. uint256 public performanceFee; /// @notice Delay before a user can initiate a refund of pending unstaked ETH. uint256 public refundDelay; /// @notice Total number pending unstaked deposits across all users. uint256 public totalPendingValidators; /// @notice Mapping of users to FeeRecipient contracts which users collect their execution layer rewards from. mapping(address => address) public registry; /// @notice Mapping of users to number of pending unstaked deposits for that user. mapping(address => uint256) public pendingValidators; /// @notice Mapping of users to timestamp of their last deposit. mapping(address => uint256) public lastDepositTimestamp; uint256 internal constant _DEPOSIT_AMOUNT = 32 ether; uint256 internal constant _MAXIMUM_REFUND_DELAY = 7 days; error InvalidAmount(); error InvalidLength(); error PendingValidators(); error NoDeposit(); error BeforeRefundDelay(); error SameValue(); constructor( address owner_, address operator_, address depositContract_, address treasury_, uint256 oneTimeFee_, uint256 performanceFee_, uint256 refundDelay_ ) Owned(owner_, operator_) { if (depositContract_ == address(0)) revert ZeroAddress(); depositContract = depositContract_; _setTreasury(treasury_); _setOneTimeFee(oneTimeFee_); _setPerformanceFee(performanceFee_); _setRefundDelay(refundDelay_); } /// @dev Costs less gas than `deposit()` if user if depositing for their own address. receive() external payable { _deposit(msg.sender); } /*////////////////////////////////////// PUBLIC FUNCTIONS //////////////////////////////////////*/ /** * @notice Deposits ETH into this contract for stakewith.us to create a new validator node on user's behalf. * @param user_ User's withdrawal address which receives consensus rewards and can claim execution layer rewards. * @dev `msg.value` must be a multiple of `_DEPOSIT_AMOUNT (32 ether) + oneTimeFee` */ function deposit(address user_) external payable { _deposit(user_); } function _deposit(address user_) internal whenNotPaused nonReentrant { if (user_ == address(0)) revert ZeroAddress(); if (pendingValidators[user_] > 0) revert PendingValidators(); uint256 perValidator = _DEPOSIT_AMOUNT + oneTimeFee; if (msg.value == 0 || msg.value % perValidator != 0) revert InvalidAmount(); // Deploy FeeRecipient for address if its their first deposit. if (registry[user_] == address(0)) { address feeRecipient = address(new FeeRecipient(user_)); registry[user_] = feeRecipient; emit UserRegistered(user_, feeRecipient); } uint256 validators = msg.value / perValidator; pendingValidators[user_] += validators; totalPendingValidators += validators; lastDepositTimestamp[user_] = block.timestamp; emit Deposit(msg.sender, user_, validators); } /** * @notice Refunds unstaked ETH to user. User must wait for at least `refundDelay` after depositing before * initiating a refund. */ function refund() external nonReentrant { uint256 validators = pendingValidators[msg.sender]; if (block.timestamp < lastDepositTimestamp[msg.sender] + refundDelay) revert BeforeRefundDelay(); _refund(msg.sender, validators); } /*//////////////////////////////////////// OPERATOR FUNCTIONS ////////////////////////////////////////*/ function stake(address user_, DepositData[] memory data_) external onlyOperator { uint256 length = data_.length; if (length == 0) revert InvalidLength(); // This underflows, throwing an error if length > pendingValidators[user_] pendingValidators[user_] -= length; totalPendingValidators -= length; if (oneTimeFee > 0) SafeTransferLib.safeTransferETH(treasury, length * oneTimeFee); bytes[] memory pubkeys = new bytes[](length); for (uint256 i = 0; i < length; ++i) { bytes memory pubkey = data_[i].pubkey; IDepositContract(depositContract).deposit{value: _DEPOSIT_AMOUNT}({ pubkey: pubkey, withdrawal_credentials: abi.encodePacked(true, uint88(0), user_), // true | 11 bytes padding | address signature: data_[i].signature, deposit_data_root: data_[i].deposit_data_root }); pubkeys[i] = pubkey; } emit Staked(user_, pubkeys); } function refundUser(address user_, uint256 validators_) external onlyOperator { _refund(user_, validators_); } function pause() external onlyOperator { _pause(); } function unpause() external onlyOperator { _unpause(); } /*///////////////////////////////////// OWNER FUNCTIONS /////////////////////////////////////*/ function setOneTimeFee(uint256 oneTimeFee_) external onlyOwner { if (oneTimeFee_ == oneTimeFee) revert SameValue(); _setOneTimeFee(oneTimeFee_); } function setPerformanceFee(uint256 performanceFee_) external onlyOwner { if (performanceFee_ == performanceFee) revert SameValue(); _setPerformanceFee(performanceFee_); } function setTreasury(address treasury_) external onlyOwner { if (treasury_ == address(0)) revert ZeroAddress(); if (treasury_ == treasury) revert SameValue(); _setTreasury(treasury_); } function setRefundDelay(uint256 refundDelay_) external onlyOwner { if (refundDelay_ == refundDelay) revert SameValue(); _setRefundDelay(refundDelay_); } /*//////////////////////////////////////// INTERNAL FUNCTIONS ////////////////////////////////////////*/ function _refund(address user_, uint256 validators_) internal { if (validators_ == 0) revert NoDeposit(); // This underflows, throwing an error if validators_ > pendingValidators[user_] pendingValidators[user_] -= validators_; totalPendingValidators -= validators_; SafeTransferLib.safeTransferETH(user_, validators_ * (_DEPOSIT_AMOUNT + oneTimeFee)); emit Refund(user_, validators_); } /// @dev One-time fee cannot be adjusted while there are still pending validators. Pause contract and stake/refund /// all pending validators before changing one-time fee. function _setOneTimeFee(uint256 oneTimeFee_) internal { if (totalPendingValidators != 0) revert PendingValidators(); oneTimeFee = oneTimeFee_; emit OneTimeFeeSet(oneTimeFee_); } function _setPerformanceFee(uint256 performanceFee_) internal { if (performanceFee_ > FEE_BASIS) revert InvalidAmount(); performanceFee = performanceFee_; emit PerformanceFeeSet(performanceFee_); } function _setTreasury(address treasury_) internal { emit NewTreasury(treasury, treasury_); treasury = treasury_; } function _setRefundDelay(uint256 refundDelay_) internal { if (refundDelay_ > _MAXIMUM_REFUND_DELAY) revert InvalidAmount(); refundDelay = refundDelay_; emit RefundDelaySet(refundDelay_); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Gas optimized reentrancy protection for smart contracts. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/ReentrancyGuard.sol) /// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol) abstract contract ReentrancyGuard { uint256 private locked = 1; modifier nonReentrant() virtual { require(locked == 1, "REENTRANCY"); locked = 2; _; locked = 1; } }
// SPDX-License-Identifier: UNLICENSED pragma solidity 0.8.13; interface IDepositContract { function deposit( bytes calldata pubkey, bytes calldata withdrawal_credentials, bytes calldata signature, bytes32 deposit_data_root ) external payable; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.13; interface IStaking { struct DepositData { bytes pubkey; bytes signature; bytes32 deposit_data_root; } event UserRegistered(address indexed user, address indexed feeRecipient); event Deposit(address indexed from, address indexed user, uint256 validators); event Staked(address indexed user, bytes[] pubkeys); event Refund(address indexed user, uint256 validators); event OneTimeFeeSet(uint256); event PerformanceFeeSet(uint256); event NewTreasury(address indexed oldTreasury, address indexed newTreasury); event RefundDelaySet(uint256); function depositContract() external view returns (address); function treasury() external view returns (address); function oneTimeFee() external view returns (uint256); function performanceFee() external view returns (uint256); function registry(address) external view returns (address); function pendingValidators(address) external view returns (uint256); function deposit(address user) external payable; }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity 0.8.13; /** * @notice Auth contract with two levels of access - `owner` can access both `onlyOwner` and `onlyOperator` functions, * while `operator` can only access `onlyOperator` functions. */ abstract contract Owned { address public owner; address public nominatedOwner; address public operator; event NewOwner(address indexed oldOwner, address indexed newOwner); event NominatedOwner(address indexed nominatedOwner); event NewOperator(address indexed oldOperator, address indexed newOperator); error Unauthorized(); error ZeroAddress(); modifier onlyOwner() virtual { if (msg.sender != owner) revert Unauthorized(); _; } modifier onlyNominatedOwner() virtual { if (msg.sender != nominatedOwner) revert Unauthorized(); _; } modifier onlyOperator() virtual { if (msg.sender != owner && msg.sender != operator) revert Unauthorized(); _; } constructor(address owner_, address operator_) { if (owner_ == address(0)) revert ZeroAddress(); if (operator_ == address(0)) revert ZeroAddress(); emit NewOwner(address(0), owner_); emit NewOperator(address(0), operator_); owner = owner_; operator = operator_; } function setOperator(address operator_) public virtual onlyOwner { if (operator_ == address(0)) revert ZeroAddress(); emit NewOperator(operator, operator_); operator = operator_; } function nominateOwner(address nominatedOwner_) public virtual onlyOwner { emit NominatedOwner(nominatedOwner_); nominatedOwner = nominatedOwner_; } function acceptOwnership() public virtual onlyNominatedOwner { emit NewOwner(owner, nominatedOwner); owner = nominatedOwner; nominatedOwner = address(0); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity 0.8.13; abstract contract Pausable { bool public paused; event Paused(address indexed sender); event Unpaused(address indexed sender); error IsPaused(); error NotPaused(); function _pause() internal whenNotPaused { paused = true; emit Paused(msg.sender); } function _unpause() internal whenPaused { paused = false; emit Unpaused(msg.sender); } modifier whenNotPaused() { if (paused) revert IsPaused(); _; } modifier whenPaused() { if (!paused) revert NotPaused(); _; } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity 0.8.13; /// @notice Gas-efficient safe ETH transfer library that gracefully handles missing return values. /// @author Copied from Solmate with ERC20 code removed. /// @author https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol library SafeTransferLib { /*////////////////////////////////////////////////////////////// ETH OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferETH(address to, uint256 amount) internal { bool success; /// @solidity memory-safe-assembly assembly { // Transfer the ETH and store if it succeeded or not. success := call(gas(), to, amount, 0, 0, 0, 0) } require(success, "ETH_TRANSFER_FAILED"); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity 0.8.13; import {FixedPointMathLib} from "solmate/utils/FixedPointMathLib.sol"; import {IStaking} from "src/interfaces/IStaking.sol"; import {SafeTransferLib} from "src/lib/SafeTransferLib.sol"; import {StakingConstants} from "src/StakingConstants.sol"; /** * @notice Contract set as the `fee_recipient` for all validators belonging to a user. Receives execution layer rewards * from block production gas tips and MEV bribes which users can claim via `claimRewards()` function. */ contract FeeRecipient is StakingConstants { using FixedPointMathLib for uint256; IStaking public immutable staking; address public immutable user; /// @dev Unclaimed rewards that fully belong to user. uint256 internal _userRewards; event ClaimRewards(uint256 amount); event TreasuryClaim(uint256 amount); error Unauthorized(); error NothingToClaim(); constructor(address user_) { staking = IStaking(payable(msg.sender)); user = user_; } /// @dev To receive MEV bribes directly transferred to `fee_recipient`. receive() external payable {} function unclaimedRewards() public view returns (uint256) { return address(this).balance - _calcToTreasury(address(this).balance - _userRewards); } function claimRewards() external onlyUser { if (unclaimedRewards() == 0) revert NothingToClaim(); _treasuryClaim(); emit ClaimRewards(address(this).balance); _userRewards = 0; SafeTransferLib.safeTransferETH(user, address(this).balance); } function treasuryClaim() external onlyTreasury { if (_calcToTreasury(address(this).balance - _userRewards) == 0) revert NothingToClaim(); _treasuryClaim(); } function _treasuryClaim() internal { uint256 share = address(this).balance - _userRewards; uint256 toTreasury = _calcToTreasury(share); if (toTreasury == 0) return; // Do nothing as treasury has nothing to claim. emit TreasuryClaim(toTreasury); _userRewards += share - toTreasury; SafeTransferLib.safeTransferETH(staking.treasury(), toTreasury); } function _calcToTreasury(uint256 amount_) internal view returns (uint256) { return amount_.mulDivDown(staking.performanceFee(), FEE_BASIS); } modifier onlyUser() { if (msg.sender != user) revert Unauthorized(); _; } modifier onlyTreasury() { if (msg.sender != staking.treasury()) revert Unauthorized(); _; } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity 0.8.13; /// @notice Contract for shared values between Staking.sol and FeeRecipient.sol. abstract contract StakingConstants { /// @notice Denominator for calculating performance fees, i.e. a `performanceFee` of 10_000 represents 100%. uint256 public constant FEE_BASIS = 10_000; }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Arithmetic library with operations for fixed-point numbers. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/FixedPointMathLib.sol) /// @author Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol) library FixedPointMathLib { /*////////////////////////////////////////////////////////////// SIMPLIFIED FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ uint256 internal constant MAX_UINT256 = 2**256 - 1; uint256 internal constant WAD = 1e18; // The scalar of ETH and most ERC20s. function mulWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, y, WAD); // Equivalent to (x * y) / WAD rounded down. } function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, y, WAD); // Equivalent to (x * y) / WAD rounded up. } function divWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, WAD, y); // Equivalent to (x * WAD) / y rounded down. } function divWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, WAD, y); // Equivalent to (x * WAD) / y rounded up. } /*////////////////////////////////////////////////////////////// LOW LEVEL FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ function mulDivDown( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // Divide x * y by the denominator. z := div(mul(x, y), denominator) } } function mulDivUp( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // If x * y modulo the denominator is strictly greater than 0, // 1 is added to round up the division of x * y by the denominator. z := add(gt(mod(mul(x, y), denominator), 0), div(mul(x, y), denominator)) } } function rpow( uint256 x, uint256 n, uint256 scalar ) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { switch x case 0 { switch n case 0 { // 0 ** 0 = 1 z := scalar } default { // 0 ** n = 0 z := 0 } } default { switch mod(n, 2) case 0 { // If n is even, store scalar in z for now. z := scalar } default { // If n is odd, store x in z for now. z := x } // Shifting right by 1 is like dividing by 2. let half := shr(1, scalar) for { // Shift n right by 1 before looping to halve it. n := shr(1, n) } n { // Shift n right by 1 each iteration to halve it. n := shr(1, n) } { // Revert immediately if x ** 2 would overflow. // Equivalent to iszero(eq(div(xx, x), x)) here. if shr(128, x) { revert(0, 0) } // Store x squared. let xx := mul(x, x) // Round to the nearest number. let xxRound := add(xx, half) // Revert if xx + half overflowed. if lt(xxRound, xx) { revert(0, 0) } // Set x to scaled xxRound. x := div(xxRound, scalar) // If n is even: if mod(n, 2) { // Compute z * x. let zx := mul(z, x) // If z * x overflowed: if iszero(eq(div(zx, x), z)) { // Revert if x is non-zero. if iszero(iszero(x)) { revert(0, 0) } } // Round to the nearest number. let zxRound := add(zx, half) // Revert if zx + half overflowed. if lt(zxRound, zx) { revert(0, 0) } // Return properly scaled zxRound. z := div(zxRound, scalar) } } } } } /*////////////////////////////////////////////////////////////// GENERAL NUMBER UTILITIES //////////////////////////////////////////////////////////////*/ function sqrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { let y := x // We start y at x, which will help us make our initial estimate. z := 181 // The "correct" value is 1, but this saves a multiplication later. // This segment is to get a reasonable initial estimate for the Babylonian method. With a bad // start, the correct # of bits increases ~linearly each iteration instead of ~quadratically. // We check y >= 2^(k + 8) but shift right by k bits // each branch to ensure that if x >= 256, then y >= 256. if iszero(lt(y, 0x10000000000000000000000000000000000)) { y := shr(128, y) z := shl(64, z) } if iszero(lt(y, 0x1000000000000000000)) { y := shr(64, y) z := shl(32, z) } if iszero(lt(y, 0x10000000000)) { y := shr(32, y) z := shl(16, z) } if iszero(lt(y, 0x1000000)) { y := shr(16, y) z := shl(8, z) } // Goal was to get z*z*y within a small factor of x. More iterations could // get y in a tighter range. Currently, we will have y in [256, 256*2^16). // We ensured y >= 256 so that the relative difference between y and y+1 is small. // That's not possible if x < 256 but we can just verify those cases exhaustively. // Now, z*z*y <= x < z*z*(y+1), and y <= 2^(16+8), and either y >= 256, or x < 256. // Correctness can be checked exhaustively for x < 256, so we assume y >= 256. // Then z*sqrt(y) is within sqrt(257)/sqrt(256) of sqrt(x), or about 20bps. // For s in the range [1/256, 256], the estimate f(s) = (181/1024) * (s+1) is in the range // (1/2.84 * sqrt(s), 2.84 * sqrt(s)), with largest error when s = 1 and when s = 256 or 1/256. // Since y is in [256, 256*2^16), let a = y/65536, so that a is in [1/256, 256). Then we can estimate // sqrt(y) using sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2^18. // There is no overflow risk here since y < 2^136 after the first branch above. z := shr(18, mul(z, add(y, 65536))) // A mul() is saved from starting z at 181. // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough. z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) // If x+1 is a perfect square, the Babylonian method cycles between // floor(sqrt(x)) and ceil(sqrt(x)). This statement ensures we return floor. // See: https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division // Since the ceil is rare, we save gas on the assignment and repeat division in the rare case. // If you don't care whether the floor or ceil square root is returned, you can remove this statement. z := sub(z, lt(div(x, z), z)) } } function unsafeMod(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Mod x by y. Note this will return // 0 instead of reverting if y is zero. z := mod(x, y) } } function unsafeDiv(uint256 x, uint256 y) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { // Divide x by y. Note this will return // 0 instead of reverting if y is zero. r := div(x, y) } } function unsafeDivUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Add 1 to x * y if x % y > 0. Note this will // return 0 instead of reverting if y is zero. z := add(gt(mod(x, y), 0), div(x, y)) } } }
{ "remappings": [ "ds-test/=lib/solmate/lib/ds-test/src/", "forge-std/=lib/forge-std/src/", "solmate/=lib/solmate/src/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "london", "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"owner_","type":"address"},{"internalType":"address","name":"operator_","type":"address"},{"internalType":"address","name":"depositContract_","type":"address"},{"internalType":"address","name":"treasury_","type":"address"},{"internalType":"uint256","name":"oneTimeFee_","type":"uint256"},{"internalType":"uint256","name":"performanceFee_","type":"uint256"},{"internalType":"uint256","name":"refundDelay_","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BeforeRefundDelay","type":"error"},{"inputs":[],"name":"InvalidAmount","type":"error"},{"inputs":[],"name":"InvalidLength","type":"error"},{"inputs":[],"name":"IsPaused","type":"error"},{"inputs":[],"name":"NoDeposit","type":"error"},{"inputs":[],"name":"NotPaused","type":"error"},{"inputs":[],"name":"PendingValidators","type":"error"},{"inputs":[],"name":"SameValue","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"validators","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldOperator","type":"address"},{"indexed":true,"internalType":"address","name":"newOperator","type":"address"}],"name":"NewOperator","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"NewOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldTreasury","type":"address"},{"indexed":true,"internalType":"address","name":"newTreasury","type":"address"}],"name":"NewTreasury","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"nominatedOwner","type":"address"}],"name":"NominatedOwner","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"","type":"uint256"}],"name":"OneTimeFeeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"","type":"uint256"}],"name":"PerformanceFeeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"validators","type":"uint256"}],"name":"Refund","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"","type":"uint256"}],"name":"RefundDelaySet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"bytes[]","name":"pubkeys","type":"bytes[]"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"feeRecipient","type":"address"}],"name":"UserRegistered","type":"event"},{"inputs":[],"name":"FEE_BASIS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user_","type":"address"}],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"depositContract","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"lastDepositTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nominatedOwner_","type":"address"}],"name":"nominateOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"nominatedOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"oneTimeFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"operator","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"pendingValidators","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"performanceFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"refund","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"refundDelay","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user_","type":"address"},{"internalType":"uint256","name":"validators_","type":"uint256"}],"name":"refundUser","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"registry","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"oneTimeFee_","type":"uint256"}],"name":"setOneTimeFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator_","type":"address"}],"name":"setOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"performanceFee_","type":"uint256"}],"name":"setPerformanceFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"refundDelay_","type":"uint256"}],"name":"setRefundDelay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"treasury_","type":"address"}],"name":"setTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"user_","type":"address"},{"components":[{"internalType":"bytes","name":"pubkey","type":"bytes"},{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"bytes32","name":"deposit_data_root","type":"bytes32"}],"internalType":"struct IStaking.DepositData[]","name":"data_","type":"tuple[]"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalPendingValidators","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","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)
0000000000000000000000003b373f51cea611f92d1deb2adb354bf2c11e3c980000000000000000000000003b373f51cea611f92d1deb2adb354bf2c11e3c9800000000000000000000000000000000219ab540356cbb839cbe05303d7705fa0000000000000000000000001c064ea662365c09c8e87242791dacbb9000260500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000064000000000000000000000000000000000000000000000000000000000003f480
-----Decoded View---------------
Arg [0] : owner_ (address): 0x3B373F51cea611f92d1dEb2ADB354bF2c11E3C98
Arg [1] : operator_ (address): 0x3B373F51cea611f92d1dEb2ADB354bF2c11E3C98
Arg [2] : depositContract_ (address): 0x00000000219ab540356cBB839Cbe05303d7705Fa
Arg [3] : treasury_ (address): 0x1C064EA662365c09c8E87242791dAcbb90002605
Arg [4] : oneTimeFee_ (uint256): 0
Arg [5] : performanceFee_ (uint256): 100
Arg [6] : refundDelay_ (uint256): 259200
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000003b373f51cea611f92d1deb2adb354bf2c11e3c98
Arg [1] : 0000000000000000000000003b373f51cea611f92d1deb2adb354bf2c11e3c98
Arg [2] : 00000000000000000000000000000000219ab540356cbb839cbe05303d7705fa
Arg [3] : 0000000000000000000000001c064ea662365c09c8e87242791dacbb90002605
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000064
Arg [6] : 000000000000000000000000000000000000000000000000000000000003f480
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Multichain Portfolio | 26 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.