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//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "./interfaces/IRiver.1.sol";
import "./interfaces/IELFeeRecipient.1.sol";

import "./libraries/LibUint256.sol";

import "./Initializable.sol";

import "./state/shared/RiverAddress.sol";

/// @title Execution Layer Fee Recipient (v1)
/// @author Kiln
/// @notice This contract receives all the execution layer fees from the proposed blocks + bribes
contract ELFeeRecipientV1 is Initializable, IELFeeRecipientV1 {
    /// @inheritdoc IELFeeRecipientV1
    function initELFeeRecipientV1(address _riverAddress) external init(0) {
        RiverAddress.set(_riverAddress);
        emit SetRiver(_riverAddress);
    }

    /// @inheritdoc IELFeeRecipientV1
    function pullELFees(uint256 _maxAmount) external {
        address river = RiverAddress.get();
        if (msg.sender != river) {
            revert LibErrors.Unauthorized(msg.sender);
        }
        uint256 amount = LibUint256.min(_maxAmount, address(this).balance);

        if (amount > 0) {
            IRiverV1(payable(river)).sendELFees{value: amount}();
        }
    }

    /// @inheritdoc IELFeeRecipientV1
    receive() external payable {
        this;
    }

    /// @inheritdoc IELFeeRecipientV1
    fallback() external payable {
        revert InvalidCall();
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "./state/shared/Version.sol";

/// @title Initializable
/// @author Kiln
/// @notice This contract ensures that initializers are called only once per version
contract Initializable {
    /// @notice Disable initialization on implementations
    constructor() {
        Version.set(type(uint256).max);
        emit Initialize(type(uint256).max, msg.data);
    }

    /// @notice An error occured during the initialization
    /// @param version The version that was attempting to be initialized
    /// @param expectedVersion The version that was expected
    error InvalidInitialization(uint256 version, uint256 expectedVersion);

    /// @notice Emitted when the contract is properly initialized
    /// @param version New version of the contracts
    /// @param cdata Complete calldata that was used during the initialization
    event Initialize(uint256 version, bytes cdata);

    /// @notice Use this modifier on initializers along with a hard-coded version number
    /// @param _version Version to initialize
    modifier init(uint256 _version) {
        if (_version != Version.get()) {
            revert InvalidInitialization(_version, Version.get());
        }
        Version.set(_version + 1); // prevents reentrency on the called method
        _;
        emit Initialize(_version, msg.data);
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

/// @title Execution Layer Fee Recipient Interface (v1)
/// @author Kiln
/// @notice This interface exposes methods to receive all the execution layer fees from the proposed blocks + bribes
interface IELFeeRecipientV1 {
    /// @notice The storage river address has changed
    /// @param river The new river address
    event SetRiver(address indexed river);

    /// @notice The fallback has been triggered
    error InvalidCall();

    /// @notice Initialize the fee recipient with the required arguments
    /// @param _riverAddress Address of River
    function initELFeeRecipientV1(address _riverAddress) external;

    /// @notice Pulls ETH to the River contract
    /// @dev Only callable by the River contract
    /// @param _maxAmount The maximum amount to pull into the system
    function pullELFees(uint256 _maxAmount) external;

    /// @notice Ether receiver
    receive() external payable;

    /// @notice Invalid fallback detector
    fallback() external payable;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "../state/river/DailyCommittableLimits.sol";

import "./components/IConsensusLayerDepositManager.1.sol";
import "./components/IOracleManager.1.sol";
import "./components/ISharesManager.1.sol";
import "./components/IUserDepositManager.1.sol";

/// @title River Interface (v1)
/// @author Kiln
/// @notice The main system interface
interface IRiverV1 is IConsensusLayerDepositManagerV1, IUserDepositManagerV1, ISharesManagerV1, IOracleManagerV1 {
    /// @notice Funds have been pulled from the Execution Layer Fee Recipient
    /// @param amount The amount pulled
    event PulledELFees(uint256 amount);

    /// @notice Funds have been pulled from the Coverage Fund
    /// @param amount The amount pulled
    event PulledCoverageFunds(uint256 amount);

    /// @notice Emitted when funds are pulled from the redeem manager
    /// @param amount The amount pulled
    event PulledRedeemManagerExceedingEth(uint256 amount);

    /// @notice Emitted when funds are pulled from the CL recipient
    /// @param pulledSkimmedEthAmount The amount of skimmed ETH pulled
    /// @param pullExitedEthAmount The amount of exited ETH pulled
    event PulledCLFunds(uint256 pulledSkimmedEthAmount, uint256 pullExitedEthAmount);

    /// @notice The stored Execution Layer Fee Recipient has been changed
    /// @param elFeeRecipient The new Execution Layer Fee Recipient
    event SetELFeeRecipient(address indexed elFeeRecipient);

    /// @notice The stored Coverage Fund has been changed
    /// @param coverageFund The new Coverage Fund
    event SetCoverageFund(address indexed coverageFund);

    /// @notice The stored Collector has been changed
    /// @param collector The new Collector
    event SetCollector(address indexed collector);

    /// @notice The stored Allowlist has been changed
    /// @param allowlist The new Allowlist
    event SetAllowlist(address indexed allowlist);

    /// @notice The stored Global Fee has been changed
    /// @param fee The new Global Fee
    event SetGlobalFee(uint256 fee);

    /// @notice The stored Operators Registry has been changed
    /// @param operatorRegistry The new Operators Registry
    event SetOperatorsRegistry(address indexed operatorRegistry);

    /// @notice The stored Metadata URI string has been changed
    /// @param metadataURI The new Metadata URI string
    event SetMetadataURI(string metadataURI);

    /// @notice The system underlying supply increased. This is a snapshot of the balances for accounting purposes
    /// @param _collector The address of the collector during this event
    /// @param _oldTotalUnderlyingBalance Old total ETH balance under management by River
    /// @param _oldTotalSupply Old total supply in shares
    /// @param _newTotalUnderlyingBalance New total ETH balance under management by River
    /// @param _newTotalSupply New total supply in shares
    event RewardsEarned(
        address indexed _collector,
        uint256 _oldTotalUnderlyingBalance,
        uint256 _oldTotalSupply,
        uint256 _newTotalUnderlyingBalance,
        uint256 _newTotalSupply
    );

    /// @notice Emitted when the daily committable limits are changed
    /// @param minNetAmount The minimum amount that must be used as the daily committable amount
    /// @param maxRelativeAmount The maximum amount that can be used as the daily committable amount, relative to the total underlying supply
    event SetMaxDailyCommittableAmounts(uint256 minNetAmount, uint256 maxRelativeAmount);

    /// @notice Emitted when the redeem manager address is changed
    /// @param redeemManager The address of the redeem manager
    event SetRedeemManager(address redeemManager);

    /// @notice Emitted when the balance to deposit is updated
    /// @param oldAmount The old balance to deposit
    /// @param newAmount The new balance to deposit
    event SetBalanceToDeposit(uint256 oldAmount, uint256 newAmount);

    /// @notice Emitted when the balance to redeem is updated
    /// @param oldAmount The old balance to redeem
    /// @param newAmount The new balance to redeem
    event SetBalanceToRedeem(uint256 oldAmount, uint256 newAmount);

    /// @notice Emitted when the balance committed to deposit
    /// @param oldAmount The old balance committed to deposit
    /// @param newAmount The new balance committed to deposit
    event SetBalanceCommittedToDeposit(uint256 oldAmount, uint256 newAmount);

    /// @notice Emitted when the redeem manager received a withdraw event report
    /// @param redeemManagerDemand The total demand in LsETH of the redeem manager
    /// @param suppliedRedeemManagerDemand The amount of LsETH demand actually supplied
    /// @param suppliedRedeemManagerDemandInEth The amount in ETH of the supplied demand
    event ReportedRedeemManager(
        uint256 redeemManagerDemand, uint256 suppliedRedeemManagerDemand, uint256 suppliedRedeemManagerDemandInEth
    );

    /// @notice Thrown when the amount received from the Withdraw contract doe not match the requested amount
    /// @param requested The amount that was requested
    /// @param received The amount that was received
    error InvalidPulledClFundsAmount(uint256 requested, uint256 received);

    /// @notice The computed amount of shares to mint is 0
    error ZeroMintedShares();

    /// @notice The access was denied
    /// @param account The account that was denied
    error Denied(address account);

    /// @notice Initializes the River system
    /// @param _depositContractAddress Address to make Consensus Layer deposits
    /// @param _elFeeRecipientAddress Address that receives the execution layer fees
    /// @param _withdrawalCredentials Credentials to use for every validator deposit
    /// @param _oracleAddress The address of the Oracle contract
    /// @param _systemAdministratorAddress Administrator address
    /// @param _allowlistAddress Address of the allowlist contract
    /// @param _operatorRegistryAddress Address of the operator registry
    /// @param _collectorAddress Address receiving the the global fee on revenue
    /// @param _globalFee Amount retained when the ETH balance increases and sent to the collector
    function initRiverV1(
        address _depositContractAddress,
        address _elFeeRecipientAddress,
        bytes32 _withdrawalCredentials,
        address _oracleAddress,
        address _systemAdministratorAddress,
        address _allowlistAddress,
        address _operatorRegistryAddress,
        address _collectorAddress,
        uint256 _globalFee
    ) external;

    /// @notice Initialized version 1.1 of the River System
    /// @param _redeemManager The redeem manager address
    /// @param _epochsPerFrame The amounts of epochs in a frame
    /// @param _slotsPerEpoch The slots inside an epoch
    /// @param _secondsPerSlot The seconds inside a slot
    /// @param _genesisTime The genesis timestamp
    /// @param _epochsToAssumedFinality The number of epochs before an epoch is considered final on-chain
    /// @param _annualAprUpperBound The reporting upper bound
    /// @param _relativeLowerBound The reporting lower bound
    /// @param _maxDailyNetCommittableAmount_ The net daily committable limit
    /// @param _maxDailyRelativeCommittableAmount_ The relative daily committable limit
    function initRiverV1_1(
        address _redeemManager,
        uint64 _epochsPerFrame,
        uint64 _slotsPerEpoch,
        uint64 _secondsPerSlot,
        uint64 _genesisTime,
        uint64 _epochsToAssumedFinality,
        uint256 _annualAprUpperBound,
        uint256 _relativeLowerBound,
        uint128 _maxDailyNetCommittableAmount_,
        uint128 _maxDailyRelativeCommittableAmount_
    ) external;

    /// @notice Get the current global fee
    /// @return The global fee
    function getGlobalFee() external view returns (uint256);

    /// @notice Retrieve the allowlist address
    /// @return The allowlist address
    function getAllowlist() external view returns (address);

    /// @notice Retrieve the collector address
    /// @return The collector address
    function getCollector() external view returns (address);

    /// @notice Retrieve the execution layer fee recipient
    /// @return The execution layer fee recipient address
    function getELFeeRecipient() external view returns (address);

    /// @notice Retrieve the coverage fund
    /// @return The coverage fund address
    function getCoverageFund() external view returns (address);

    /// @notice Retrieve the redeem manager
    /// @return The redeem manager address
    function getRedeemManager() external view returns (address);

    /// @notice Retrieve the operators registry
    /// @return The operators registry address
    function getOperatorsRegistry() external view returns (address);

    /// @notice Retrieve the metadata uri string value
    /// @return The metadata uri string value
    function getMetadataURI() external view returns (string memory);

    /// @notice Retrieve the configured daily committable limits
    /// @return The daily committable limits structure
    function getDailyCommittableLimits()
        external
        view
        returns (DailyCommittableLimits.DailyCommittableLimitsStruct memory);

    /// @notice Resolves the provided redeem requests by calling the redeem manager
    /// @param _redeemRequestIds The list of redeem requests to resolve
    /// @return withdrawalEventIds The list of matching withdrawal events, or error codes
    function resolveRedeemRequests(uint32[] calldata _redeemRequestIds)
        external
        view
        returns (int64[] memory withdrawalEventIds);

    /// @notice Set the daily committable limits
    /// @param _dcl The Daily Committable Limits structure
    function setDailyCommittableLimits(DailyCommittableLimits.DailyCommittableLimitsStruct memory _dcl) external;

    /// @notice Retrieve the current balance to redeem
    /// @return The current balance to redeem
    function getBalanceToRedeem() external view returns (uint256);

    /// @notice Performs a redeem request on the redeem manager
    /// @param _lsETHAmount The amount of LsETH to redeem
    /// @param _recipient The address that will own the redeem request
    /// @return redeemRequestId The ID of the newly created redeem request
    function requestRedeem(uint256 _lsETHAmount, address _recipient) external returns (uint32 redeemRequestId);

    /// @notice Claims several redeem requests
    /// @param _redeemRequestIds The list of redeem requests to claim
    /// @param _withdrawalEventIds The list of resolved withdrawal event ids
    /// @return claimStatuses The operation status results
    function claimRedeemRequests(uint32[] calldata _redeemRequestIds, uint32[] calldata _withdrawalEventIds)
        external
        returns (uint8[] memory claimStatuses);

    /// @notice Changes the global fee parameter
    /// @param _newFee New fee value
    function setGlobalFee(uint256 _newFee) external;

    /// @notice Changes the allowlist address
    /// @param _newAllowlist New address for the allowlist
    function setAllowlist(address _newAllowlist) external;

    /// @notice Changes the collector address
    /// @param _newCollector New address for the collector
    function setCollector(address _newCollector) external;

    /// @notice Changes the execution layer fee recipient
    /// @param _newELFeeRecipient New address for the recipient
    function setELFeeRecipient(address _newELFeeRecipient) external;

    /// @notice Changes the coverage fund
    /// @param _newCoverageFund New address for the fund
    function setCoverageFund(address _newCoverageFund) external;

    /// @notice Sets the metadata uri string value
    /// @param _metadataURI The new metadata uri string value
    function setMetadataURI(string memory _metadataURI) external;

    /// @notice Input for execution layer fee earnings
    function sendELFees() external payable;

    /// @notice Input for consensus layer funds, containing both exit and skimming
    function sendCLFunds() external payable;

    /// @notice Input for coverage funds
    function sendCoverageFunds() external payable;

    /// @notice Input for the redeem manager funds
    function sendRedeemManagerExceedingFunds() external payable;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

/// @title Consensys Layer Deposit Manager Interface (v1)
/// @author Kiln
/// @notice This interface exposes methods to handle the interactions with the official deposit contract
interface IConsensusLayerDepositManagerV1 {
    /// @notice The stored deposit contract address changed
    /// @param depositContract Address of the deposit contract
    event SetDepositContractAddress(address indexed depositContract);

    /// @notice The stored withdrawal credentials changed
    /// @param withdrawalCredentials The withdrawal credentials to use for deposits
    event SetWithdrawalCredentials(bytes32 withdrawalCredentials);

    /// @notice Emitted when the deposited validator count is updated
    /// @param oldDepositedValidatorCount The old deposited validator count value
    /// @param newDepositedValidatorCount The new deposited validator count value
    event SetDepositedValidatorCount(uint256 oldDepositedValidatorCount, uint256 newDepositedValidatorCount);

    /// @notice Not enough funds to deposit one validator
    error NotEnoughFunds();

    /// @notice The length of the BLS Public key is invalid during deposit
    error InconsistentPublicKeys();

    /// @notice The length of the BLS Signature is invalid during deposit
    error InconsistentSignatures();

    /// @notice The internal key retrieval returned no keys
    error NoAvailableValidatorKeys();

    /// @notice The received count of public keys to deposit is invalid
    error InvalidPublicKeyCount();

    /// @notice The received count of signatures to deposit is invalid
    error InvalidSignatureCount();

    /// @notice The withdrawal credentials value is null
    error InvalidWithdrawalCredentials();

    /// @notice An error occured during the deposit
    error ErrorOnDeposit();

    /// @notice Returns the amount of ETH not yet committed for deposit
    /// @return The amount of ETH not yet committed for deposit
    function getBalanceToDeposit() external view returns (uint256);

    /// @notice Returns the amount of ETH committed for deposit
    /// @return The amount of ETH committed for deposit
    function getCommittedBalance() external view returns (uint256);

    /// @notice Retrieve the withdrawal credentials
    /// @return The withdrawal credentials
    function getWithdrawalCredentials() external view returns (bytes32);

    /// @notice Get the deposited validator count (the count of deposits made by the contract)
    /// @return The deposited validator count
    function getDepositedValidatorCount() external view returns (uint256);

    /// @notice Deposits current balance to the Consensus Layer by batches of 32 ETH
    /// @param _maxCount The maximum amount of validator keys to fund
    function depositToConsensusLayer(uint256 _maxCount) external;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "../../state/river/CLSpec.sol";
import "../../state/river/ReportBounds.sol";

/// @title Oracle Manager (v1)
/// @author Kiln
/// @notice This interface exposes methods to handle the inputs provided by the oracle
interface IOracleManagerV1 {
    /// @notice The stored oracle address changed
    /// @param oracleAddress The new oracle address
    event SetOracle(address indexed oracleAddress);

    /// @notice The consensus layer data provided by the oracle has been updated
    /// @param validatorCount The new count of validators running on the consensus layer
    /// @param validatorTotalBalance The new total balance sum of all validators
    /// @param roundId Round identifier
    event ConsensusLayerDataUpdate(uint256 validatorCount, uint256 validatorTotalBalance, bytes32 roundId);

    /// @notice The Consensus Layer Spec is changed
    /// @param epochsPerFrame The number of epochs inside a frame
    /// @param slotsPerEpoch The number of slots inside an epoch
    /// @param secondsPerSlot The number of seconds inside a slot
    /// @param genesisTime The genesis timestamp
    /// @param epochsToAssumedFinality The number of epochs before an epoch is considered final
    event SetSpec(
        uint64 epochsPerFrame,
        uint64 slotsPerEpoch,
        uint64 secondsPerSlot,
        uint64 genesisTime,
        uint64 epochsToAssumedFinality
    );

    /// @notice The Report Bounds are changed
    /// @param annualAprUpperBound The reporting upper bound
    /// @param relativeLowerBound The reporting lower bound
    event SetBounds(uint256 annualAprUpperBound, uint256 relativeLowerBound);

    /// @notice The provided report has beend processed
    /// @param report The report that was provided
    /// @param trace The trace structure providing more insights on internals
    event ProcessedConsensusLayerReport(
        IOracleManagerV1.ConsensusLayerReport report, ConsensusLayerDataReportingTrace trace
    );

    /// @notice The reported validator count is invalid
    /// @param providedValidatorCount The received validator count value
    /// @param depositedValidatorCount The number of deposits performed by the system
    /// @param lastReportedValidatorCount The last reported validator count
    error InvalidValidatorCountReport(
        uint256 providedValidatorCount, uint256 depositedValidatorCount, uint256 lastReportedValidatorCount
    );

    /// @notice Thrown when an invalid epoch was reported
    /// @param epoch Invalid epoch
    error InvalidEpoch(uint256 epoch);

    /// @notice The balance increase is higher than the maximum allowed by the upper bound
    /// @param prevTotalEthIncludingExited The previous total balance, including all exited balance
    /// @param postTotalEthIncludingExited The post-report total balance, including all exited balance
    /// @param timeElapsed The time in seconds since last report
    /// @param annualAprUpperBound The upper bound value that was used
    error TotalValidatorBalanceIncreaseOutOfBound(
        uint256 prevTotalEthIncludingExited,
        uint256 postTotalEthIncludingExited,
        uint256 timeElapsed,
        uint256 annualAprUpperBound
    );

    /// @notice The balance decrease is higher than the maximum allowed by the lower bound
    /// @param prevTotalEthIncludingExited The previous total balance, including all exited balance
    /// @param postTotalEthIncludingExited The post-report total balance, including all exited balance
    /// @param timeElapsed The time in seconds since last report
    /// @param relativeLowerBound The lower bound value that was used
    error TotalValidatorBalanceDecreaseOutOfBound(
        uint256 prevTotalEthIncludingExited,
        uint256 postTotalEthIncludingExited,
        uint256 timeElapsed,
        uint256 relativeLowerBound
    );

    /// @notice The total exited balance decreased
    /// @param currentValidatorsExitedBalance The current exited balance
    /// @param newValidatorsExitedBalance The new exited balance
    error InvalidDecreasingValidatorsExitedBalance(
        uint256 currentValidatorsExitedBalance, uint256 newValidatorsExitedBalance
    );

    /// @notice The total skimmed balance decreased
    /// @param currentValidatorsSkimmedBalance The current exited balance
    /// @param newValidatorsSkimmedBalance The new exited balance
    error InvalidDecreasingValidatorsSkimmedBalance(
        uint256 currentValidatorsSkimmedBalance, uint256 newValidatorsSkimmedBalance
    );

    /// @notice Trace structure emitted via logs during reporting
    struct ConsensusLayerDataReportingTrace {
        uint256 rewards;
        uint256 pulledELFees;
        uint256 pulledRedeemManagerExceedingEthBuffer;
        uint256 pulledCoverageFunds;
    }

    /// @notice The format of the oracle report
    struct ConsensusLayerReport {
        // this is the epoch at which the report was performed
        // data should be fetched up to the state of this epoch by the oracles
        uint256 epoch;
        // the sum of all the validator balances on the consensus layer
        // when a validator enters the exit queue, the validator is considered stopped, its balance is accounted in both validatorsExitingBalance and validatorsBalance
        // when a validator leaves the exit queue and the funds are sweeped onto the execution layer, the balance is only accounted in validatorsExitedBalance and not in validatorsBalance
        // this value can decrease between reports
        uint256 validatorsBalance;
        // the sum of all the skimmings performed on the validators
        // these values can be found in the execution layer block bodies under the withdrawals field
        // a withdrawal is considered skimming if
        // - the epoch at which it happened is < validator.withdrawableEpoch
        // - the epoch at which it happened is >= validator.withdrawableEpoch and in that case we only account for what would be above 32 eth as skimming
        // this value cannot decrease over reports
        uint256 validatorsSkimmedBalance;
        // the sum of all the exits performed on the validators
        // these values can be found in the execution layer block bodies under the withdrawals field
        // a withdrawal is considered exit if
        // - the epoch at which it happened is >= validator.withdrawableEpoch and in that case we only account for what would be <= 32 eth as exit
        // this value cannot decrease over reports
        uint256 validatorsExitedBalance;
        // the sum of all the exiting balance, which is all the validators on their way to get sweeped and exited
        // this includes voluntary exits and slashings
        // this value can decrease between reports
        uint256 validatorsExitingBalance;
        // the count of activated validators
        // even validators that are exited are still accounted
        // this value cannot decrease over reports
        uint32 validatorsCount;
        // an array containing the count of stopped validators per operator
        // the first element of the array is the sum of all stopped validators
        // then index 1 would be operator 0
        // these values cannot decrease over reports
        uint32[] stoppedValidatorCountPerOperator;
        // flag enabled by the oracles when the buffer rebalancing is activated
        // the activation logic is written in the oracle specification and all oracle members must agree on the activation
        // when active, the eth in the deposit buffer can be used to pay for exits in the redeem manager
        bool rebalanceDepositToRedeemMode;
        // flag enabled by the oracles when the slashing containment is activated
        // the activation logic is written in the oracle specification and all oracle members must agree on the activation
        // This flag is activated when a pre-defined threshold of slashed validators in our set of validators is reached
        // This flag is deactivated when a bottom threshold is met, this means that when we reach the upper threshold and activate the flag, we will deactivate it when we reach the bottom threshold and not before
        // when active, no more validator exits can be requested by the protocol
        bool slashingContainmentMode;
    }

    /// @notice The format of the oracle report in storage
    /// @notice These fields have the exact same function as the ones in ConsensusLayerReport, but this struct is optimized for storage
    struct StoredConsensusLayerReport {
        uint256 epoch;
        uint256 validatorsBalance;
        uint256 validatorsSkimmedBalance;
        uint256 validatorsExitedBalance;
        uint256 validatorsExitingBalance;
        uint32 validatorsCount;
        bool rebalanceDepositToRedeemMode;
        bool slashingContainmentMode;
    }

    /// @notice Get oracle address
    /// @return The oracle address
    function getOracle() external view returns (address);

    /// @notice Get CL validator total balance
    /// @return The CL Validator total balance
    function getCLValidatorTotalBalance() external view returns (uint256);

    /// @notice Get CL validator count (the amount of validator reported by the oracles)
    /// @return The CL validator count
    function getCLValidatorCount() external view returns (uint256);

    /// @notice Verifies if the provided epoch is valid
    /// @param epoch The epoch to lookup
    /// @return True if valid
    function isValidEpoch(uint256 epoch) external view returns (bool);

    /// @notice Retrieve the block timestamp
    /// @return The current timestamp from the EVM context
    function getTime() external view returns (uint256);

    /// @notice Retrieve expected epoch id
    /// @return The current expected epoch id
    function getExpectedEpochId() external view returns (uint256);

    /// @notice Retrieve the last completed epoch id
    /// @return The last completed epoch id
    function getLastCompletedEpochId() external view returns (uint256);

    /// @notice Retrieve the current epoch id based on block timestamp
    /// @return The current epoch id
    function getCurrentEpochId() external view returns (uint256);

    /// @notice Retrieve the current cl spec
    /// @return The Consensus Layer Specification
    function getCLSpec() external view returns (CLSpec.CLSpecStruct memory);

    /// @notice Retrieve the current frame details
    /// @return _startEpochId The epoch at the beginning of the frame
    /// @return _startTime The timestamp of the beginning of the frame in seconds
    /// @return _endTime The timestamp of the end of the frame in seconds
    function getCurrentFrame() external view returns (uint256 _startEpochId, uint256 _startTime, uint256 _endTime);

    /// @notice Retrieve the first epoch id of the frame of the provided epoch id
    /// @param _epochId Epoch id used to get the frame
    /// @return The first epoch id of the frame containing the given epoch id
    function getFrameFirstEpochId(uint256 _epochId) external view returns (uint256);

    /// @notice Retrieve the report bounds
    /// @return The report bounds
    function getReportBounds() external view returns (ReportBounds.ReportBoundsStruct memory);

    /// @notice Retrieve the last consensus layer report
    /// @return The stored consensus layer report
    function getLastConsensusLayerReport() external view returns (IOracleManagerV1.StoredConsensusLayerReport memory);

    /// @notice Set the oracle address
    /// @param _oracleAddress Address of the oracle
    function setOracle(address _oracleAddress) external;

    /// @notice Set the consensus layer spec
    /// @param _newValue The new consensus layer spec value
    function setCLSpec(CLSpec.CLSpecStruct calldata _newValue) external;

    /// @notice Set the report bounds
    /// @param _newValue The new report bounds value
    function setReportBounds(ReportBounds.ReportBoundsStruct calldata _newValue) external;

    /// @notice Performs all the reporting logics
    /// @param _report The consensus layer report structure
    function setConsensusLayerData(ConsensusLayerReport calldata _report) external;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";

/// @title Shares Manager Interface (v1)
/// @author Kiln
/// @notice This interface exposes methods to handle the shares of the depositor and the ERC20 interface
interface ISharesManagerV1 is IERC20 {
    /// @notice Emitted when the total supply is changed
    event SetTotalSupply(uint256 totalSupply);

    /// @notice Balance too low to perform operation
    error BalanceTooLow();

    /// @notice Allowance too low to perform operation
    /// @param _from Account where funds are sent from
    /// @param _operator Account attempting the transfer
    /// @param _allowance Current allowance
    /// @param _value Requested transfer value in shares
    error AllowanceTooLow(address _from, address _operator, uint256 _allowance, uint256 _value);

    /// @notice Invalid empty transfer
    error NullTransfer();

    /// @notice Invalid transfer recipients
    /// @param _from Account sending the funds in the invalid transfer
    /// @param _to Account receiving the funds in the invalid transfer
    error UnauthorizedTransfer(address _from, address _to);

    /// @notice Retrieve the token name
    /// @return The token name
    function name() external pure returns (string memory);

    /// @notice Retrieve the token symbol
    /// @return The token symbol
    function symbol() external pure returns (string memory);

    /// @notice Retrieve the decimal count
    /// @return The decimal count
    function decimals() external pure returns (uint8);

    /// @notice Retrieve the total token supply
    /// @return The total supply in shares
    function totalSupply() external view returns (uint256);

    /// @notice Retrieve the total underlying asset supply
    /// @return The total underlying asset supply
    function totalUnderlyingSupply() external view returns (uint256);

    /// @notice Retrieve the balance of an account
    /// @param _owner Address to be checked
    /// @return The balance of the account in shares
    function balanceOf(address _owner) external view returns (uint256);

    /// @notice Retrieve the underlying asset balance of an account
    /// @param _owner Address to be checked
    /// @return The underlying balance of the account
    function balanceOfUnderlying(address _owner) external view returns (uint256);

    /// @notice Retrieve the underlying asset balance from an amount of shares
    /// @param _shares Amount of shares to convert
    /// @return The underlying asset balance represented by the shares
    function underlyingBalanceFromShares(uint256 _shares) external view returns (uint256);

    /// @notice Retrieve the shares count from an underlying asset amount
    /// @param _underlyingAssetAmount Amount of underlying asset to convert
    /// @return The amount of shares worth the underlying asset amopunt
    function sharesFromUnderlyingBalance(uint256 _underlyingAssetAmount) external view returns (uint256);

    /// @notice Retrieve the allowance value for a spender
    /// @param _owner Address that issued the allowance
    /// @param _spender Address that received the allowance
    /// @return The allowance in shares for a given spender
    function allowance(address _owner, address _spender) external view returns (uint256);

    /// @notice Performs a transfer from the message sender to the provided account
    /// @param _to Address receiving the tokens
    /// @param _value Amount of shares to be sent
    /// @return True if success
    function transfer(address _to, uint256 _value) external returns (bool);

    /// @notice Performs a transfer between two recipients
    /// @param _from Address sending the tokens
    /// @param _to Address receiving the tokens
    /// @param _value Amount of shares to be sent
    /// @return True if success
    function transferFrom(address _from, address _to, uint256 _value) external returns (bool);

    /// @notice Approves an account for future spendings
    /// @dev An approved account can use transferFrom to transfer funds on behalf of the token owner
    /// @param _spender Address that is allowed to spend the tokens
    /// @param _value The allowed amount in shares, will override previous value
    /// @return True if success
    function approve(address _spender, uint256 _value) external returns (bool);

    /// @notice Increase allowance to another account
    /// @param _spender Spender that receives the allowance
    /// @param _additionalValue Amount of shares to add
    /// @return True if success
    function increaseAllowance(address _spender, uint256 _additionalValue) external returns (bool);

    /// @notice Decrease allowance to another account
    /// @param _spender Spender that receives the allowance
    /// @param _subtractableValue Amount of shares to subtract
    /// @return True if success
    function decreaseAllowance(address _spender, uint256 _subtractableValue) external returns (bool);
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

/// @title User Deposit Manager (v1)
/// @author Kiln
/// @notice This interface exposes methods to handle the inbound transfers cases or the explicit submissions
interface IUserDepositManagerV1 {
    /// @notice User deposited ETH in the system
    /// @param depositor Address performing the deposit
    /// @param recipient Address receiving the minted shares
    /// @param amount Amount in ETH deposited
    event UserDeposit(address indexed depositor, address indexed recipient, uint256 amount);

    /// @notice And empty deposit attempt was made
    error EmptyDeposit();

    /// @notice Explicit deposit method to mint on msg.sender
    function deposit() external payable;

    /// @notice Explicit deposit method to mint on msg.sender and transfer to _recipient
    /// @param _recipient Address receiving the minted LsETH
    function depositAndTransfer(address _recipient) external payable;

    /// @notice Implicit deposit method, when the user performs a regular transfer to the contract
    receive() external payable;

    /// @notice Invalid call, when the user sends a transaction with a data payload but no method matched
    fallback() external payable;
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

/// @title Lib Basis Points
/// @notice Holds the basis points max value
library LibBasisPoints {
    /// @notice The max value for basis points (represents 100%)
    uint256 internal constant BASIS_POINTS_MAX = 10_000;
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

/// @title Lib Errors
/// @notice Library of common errors
library LibErrors {
    /// @notice The operator is unauthorized for the caller
    /// @param caller Address performing the call
    error Unauthorized(address caller);

    /// @notice The call was invalid
    error InvalidCall();

    /// @notice The argument was invalid
    error InvalidArgument();

    /// @notice The address is zero
    error InvalidZeroAddress();

    /// @notice The string is empty
    error InvalidEmptyString();

    /// @notice The fee is invalid
    error InvalidFee();
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

import "./LibErrors.sol";
import "./LibBasisPoints.sol";

/// @title Lib Sanitize
/// @notice Utilities to sanitize input values
library LibSanitize {
    /// @notice Reverts if address is 0
    /// @param _address Address to check
    function _notZeroAddress(address _address) internal pure {
        if (_address == address(0)) {
            revert LibErrors.InvalidZeroAddress();
        }
    }

    /// @notice Reverts if string is empty
    /// @param _string String to check
    function _notEmptyString(string memory _string) internal pure {
        if (bytes(_string).length == 0) {
            revert LibErrors.InvalidEmptyString();
        }
    }

    /// @notice Reverts if fee is invalid
    /// @param _fee Fee to check
    function _validFee(uint256 _fee) internal pure {
        if (_fee > LibBasisPoints.BASIS_POINTS_MAX) {
            revert LibErrors.InvalidFee();
        }
    }
}

//SPDX-License-Identifier: MIT
pragma solidity 0.8.10;

/// @title Lib Uint256
/// @notice Utilities to perform uint operations
library LibUint256 {
    /// @notice Converts a value to little endian (64 bits)
    /// @param _value The value to convert
    /// @return result The converted value
    function toLittleEndian64(uint256 _value) internal pure returns (uint256 result) {
        result = 0;
        uint256 tempValue = _value;
        result = tempValue & 0xFF;
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        result = (result << 8) | (tempValue & 0xFF);
        tempValue >>= 8;

        assert(0 == tempValue); // fully converted
        result <<= (24 * 8);
    }

    /// @notice Returns the minimum value
    /// @param _a First value
    /// @param _b Second value
    /// @return Smallest value between _a and _b
    function min(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return (_a > _b ? _b : _a);
    }

    /// @notice Returns the max value
    /// @param _a First value
    /// @param _b Second value
    /// @return Highest value between _a and _b
    function max(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return (_a < _b ? _b : _a);
    }

    /// @notice Performs a ceiled division
    /// @param _a Numerator
    /// @param _b Denominator
    /// @return ceil(_a / _b)
    function ceil(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return (_a / _b) + (_a % _b > 0 ? 1 : 0);
    }
}

// SPDX-License-Identifier:    MIT

pragma solidity 0.8.10;

/// @title Lib Unstructured Storage
/// @notice Utilities to work with unstructured storage
library LibUnstructuredStorage {
    /// @notice Retrieve a bool value at a storage slot
    /// @param _position The storage slot to retrieve
    /// @return data The bool value
    function getStorageBool(bytes32 _position) internal view returns (bool data) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            data := sload(_position)
        }
    }

    /// @notice Retrieve an address value at a storage slot
    /// @param _position The storage slot to retrieve
    /// @return data The address value
    function getStorageAddress(bytes32 _position) internal view returns (address data) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            data := sload(_position)
        }
    }

    /// @notice Retrieve a bytes32 value at a storage slot
    /// @param _position The storage slot to retrieve
    /// @return data The bytes32 value
    function getStorageBytes32(bytes32 _position) internal view returns (bytes32 data) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            data := sload(_position)
        }
    }

    /// @notice Retrieve an uint256 value at a storage slot
    /// @param _position The storage slot to retrieve
    /// @return data The uint256 value
    function getStorageUint256(bytes32 _position) internal view returns (uint256 data) {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            data := sload(_position)
        }
    }

    /// @notice Sets a bool value at a storage slot
    /// @param _position The storage slot to set
    /// @param _data The bool value to set
    function setStorageBool(bytes32 _position, bool _data) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(_position, _data)
        }
    }

    /// @notice Sets an address value at a storage slot
    /// @param _position The storage slot to set
    /// @param _data The address value to set
    function setStorageAddress(bytes32 _position, address _data) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(_position, _data)
        }
    }

    /// @notice Sets a bytes32 value at a storage slot
    /// @param _position The storage slot to set
    /// @param _data The bytes32 value to set
    function setStorageBytes32(bytes32 _position, bytes32 _data) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(_position, _data)
        }
    }

    /// @notice Sets an uint256 value at a storage slot
    /// @param _position The storage slot to set
    /// @param _data The uint256 value to set
    function setStorageUint256(bytes32 _position, uint256 _data) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(_position, _data)
        }
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

/// @title Consensus Layer Spec Storage
/// @notice Utility to manage the Consensus Layer Spec in storage
library CLSpec {
    /// @notice Storage slot of the Consensus Layer Spec
    bytes32 internal constant CL_SPEC_SLOT = bytes32(uint256(keccak256("river.state.clSpec")) - 1);

    /// @notice The Consensus Layer Spec structure
    struct CLSpecStruct {
        /// @custom:attribute The count of epochs per frame, 225 means 24h
        uint64 epochsPerFrame;
        /// @custom:attribute The count of slots in an epoch (32 on mainnet)
        uint64 slotsPerEpoch;
        /// @custom:attribute The seconds in a slot (12 on mainnet)
        uint64 secondsPerSlot;
        /// @custom:attribute The block timestamp of the first consensus layer block
        uint64 genesisTime;
        /// @custom:attribute The count of epochs before considering an epoch final on-chain
        uint64 epochsToAssumedFinality;
    }

    /// @notice The structure in storage
    struct Slot {
        /// @custom:attribute The structure in storage
        CLSpecStruct value;
    }

    /// @notice Retrieve the Consensus Layer Spec from storage
    /// @return The Consensus Layer Spec
    function get() internal view returns (CLSpecStruct memory) {
        bytes32 slot = CL_SPEC_SLOT;

        Slot storage r;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }

        return r.value;
    }

    /// @notice Set the Consensus Layer Spec value in storage
    /// @param _newCLSpec The new value to set in storage
    function set(CLSpecStruct memory _newCLSpec) internal {
        bytes32 slot = CL_SPEC_SLOT;

        Slot storage r;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }

        r.value = _newCLSpec;
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "../../libraries/LibSanitize.sol";

/// @title Daily Committable Limits storage
/// @notice Utility to manage the Daily Committable Limits in storage
library DailyCommittableLimits {
    /// @notice Storage slot of the Daily Committable Limits storage
    bytes32 internal constant DAILY_COMMITTABLE_LIMITS_SLOT =
        bytes32(uint256(keccak256("river.state.dailyCommittableLimits")) - 1);

    /// @notice The daily committable limits structure
    struct DailyCommittableLimitsStruct {
        uint128 minDailyNetCommittableAmount;
        uint128 maxDailyRelativeCommittableAmount;
    }

    /// @notice The structure in storage
    struct Slot {
        /// @custom:attribute The structure in storage
        DailyCommittableLimitsStruct value;
    }

    /// @notice Retrieve the Daily Committable Limits from storage
    /// @return The Daily Committable Limits
    function get() internal view returns (DailyCommittableLimitsStruct memory) {
        bytes32 slot = DAILY_COMMITTABLE_LIMITS_SLOT;

        Slot storage r;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }

        return r.value;
    }

    /// @notice Set the Daily Committable Limits value in storage
    /// @param _newValue The new value to set in storage
    function set(DailyCommittableLimitsStruct memory _newValue) internal {
        bytes32 slot = DAILY_COMMITTABLE_LIMITS_SLOT;

        Slot storage r;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }

        r.value = _newValue;
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

/// @title Report Bounds Storage
/// @notice Utility to manage the Report Bounds in storage
library ReportBounds {
    /// @notice Storage slot of the Report Bounds
    bytes32 internal constant REPORT_BOUNDS_SLOT = bytes32(uint256(keccak256("river.state.reportBounds")) - 1);

    /// @notice The Report Bounds structure
    struct ReportBoundsStruct {
        /// @custom:attribute The maximum allowed annual apr, checked before submitting a report to River
        uint256 annualAprUpperBound;
        /// @custom:attribute The maximum allowed balance decrease, also checked before submitting a report to River
        uint256 relativeLowerBound;
    }

    /// @notice The structure in storage
    struct Slot {
        /// @custom:attribute The structure in storage
        ReportBoundsStruct value;
    }

    /// @notice Retrieve the Report Bounds from storage
    /// @return The Report Bounds
    function get() internal view returns (ReportBoundsStruct memory) {
        bytes32 slot = REPORT_BOUNDS_SLOT;

        Slot storage r;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }

        return r.value;
    }

    /// @notice Set the Report Bounds in storage
    /// @param _newReportBounds The new Report Bounds value
    function set(ReportBoundsStruct memory _newReportBounds) internal {
        bytes32 slot = REPORT_BOUNDS_SLOT;

        Slot storage r;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            r.slot := slot
        }

        r.value = _newReportBounds;
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "../../libraries/LibSanitize.sol";
import "../../libraries/LibUnstructuredStorage.sol";

/// @title River Address Storage
/// @notice Utility to manage the River Address in storage
library RiverAddress {
    /// @notice Storage slot of the River Address
    bytes32 internal constant RIVER_ADDRESS_SLOT = bytes32(uint256(keccak256("river.state.riverAddress")) - 1);

    /// @notice Retrieve the River Address
    /// @return The River Address
    function get() internal view returns (address) {
        return LibUnstructuredStorage.getStorageAddress(RIVER_ADDRESS_SLOT);
    }

    /// @notice Sets the River Address
    /// @param _newValue New River Address
    function set(address _newValue) internal {
        LibSanitize._notZeroAddress(_newValue);
        LibUnstructuredStorage.setStorageAddress(RIVER_ADDRESS_SLOT, _newValue);
    }
}

//SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.10;

import "../../libraries/LibUnstructuredStorage.sol";

/// @title Version Storage
/// @notice Utility to manage the Version in storage
library Version {
    /// @notice Storage slot of the Version
    bytes32 public constant VERSION_SLOT = bytes32(uint256(keccak256("river.state.version")) - 1);

    /// @notice Retrieve the Version
    /// @return The Version
    function get() internal view returns (uint256) {
        return LibUnstructuredStorage.getStorageUint256(VERSION_SLOT);
    }

    /// @notice Sets the Version
    /// @param _newValue New Version
    function set(uint256 _newValue) internal {
        LibUnstructuredStorage.setStorageUint256(VERSION_SLOT, _newValue);
    }
}

// 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);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"name":"InvalidCall","type":"error"},{"inputs":[{"internalType":"uint256","name":"version","type":"uint256"},{"internalType":"uint256","name":"expectedVersion","type":"uint256"}],"name":"InvalidInitialization","type":"error"},{"inputs":[],"name":"InvalidZeroAddress","type":"error"},{"inputs":[{"internalType":"address","name":"caller","type":"address"}],"name":"Unauthorized","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"version","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"cdata","type":"bytes"}],"name":"Initialize","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"river","type":"address"}],"name":"SetRiver","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[{"internalType":"address","name":"_riverAddress","type":"address"}],"name":"initELFeeRecipientV1","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxAmount","type":"uint256"}],"name":"pullELFees","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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