ETH Price: $3,389.32 (-1.65%)
 

Overview

ETH Balance

0 ETH

ETH Value

$0.00

Sponsored

Transaction Hash
Method
Block
From
To
0x61018060114454532024-03-05 23:10:53134 days ago1709680253IN
 Contract Creation
0 ETH0.004088323.00000219

Parent Transaction Hash Block From To
View All Internal Transactions

Loading...
Loading

Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x2005c585...0C0F1764E
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
L2OutputOracle

Compiler Version
v0.8.15+commit.e14f2714

Optimization Enabled:
Yes with 999999 runs

Other Settings:
london EvmVersion
File 1 of 6 : L2OutputOracle.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

import { Initializable } from "@openzeppelin/contracts/proxy/utils/Initializable.sol";
import { Semver } from "../universal/Semver.sol";
import { Types } from "../libraries/Types.sol";

/// @custom:proxied
/// @title L2OutputOracle
/// @notice The L2OutputOracle contains an array of L2 state outputs, where each output is a
///         commitment to the state of the L2 chain. Other contracts like the OptimismPortal use
///         these outputs to verify information about the state of L2.
contract L2OutputOracle is Initializable, Semver {
    /// @notice The interval in L2 blocks at which checkpoints must be submitted.
    ///         Although this is immutable, it can safely be modified by upgrading the
    ///         implementation contract.
    uint256 public immutable SUBMISSION_INTERVAL;

    /// @notice The time between L2 blocks in seconds. Once set, this value MUST NOT be modified.
    uint256 public immutable L2_BLOCK_TIME;

    /// @notice The address of the challenger. Can be updated via upgrade.
    address public immutable CHALLENGER;

    /// @notice The address of the proposer. Can be updated via upgrade.
    address public immutable PROPOSER;

    /// @notice The minimum time (in seconds) that must elapse before a withdrawal can be finalized.
    uint256 public immutable FINALIZATION_PERIOD_SECONDS;

    /// @notice The number of the first L2 block recorded in this contract.
    uint256 public startingBlockNumber;

    /// @notice The timestamp of the first L2 block recorded in this contract.
    uint256 public startingTimestamp;

    /// @notice An array of L2 output proposals.
    Types.OutputProposal[] internal l2Outputs;

    /// @notice Emitted when an output is proposed.
    /// @param outputRoot    The output root.
    /// @param l2OutputIndex The index of the output in the l2Outputs array.
    /// @param l2BlockNumber The L2 block number of the output root.
    /// @param l1Timestamp   The L1 timestamp when proposed.
    event OutputProposed(
        bytes32 indexed outputRoot,
        uint256 indexed l2OutputIndex,
        uint256 indexed l2BlockNumber,
        uint256 l1Timestamp
    );

    /// @notice Emitted when outputs are deleted.
    /// @param prevNextOutputIndex Next L2 output index before the deletion.
    /// @param newNextOutputIndex  Next L2 output index after the deletion.
    event OutputsDeleted(uint256 indexed prevNextOutputIndex, uint256 indexed newNextOutputIndex);

    /// @custom:semver 1.3.1
    /// @notice Constructs the L2OutputOracle contract.
    /// @param _submissionInterval  Interval in blocks at which checkpoints must be submitted.
    /// @param _l2BlockTime         The time per L2 block, in seconds.
    /// @param _startingBlockNumber The number of the first L2 block.
    /// @param _startingTimestamp   The timestamp of the first L2 block.
    /// @param _proposer            The address of the proposer.
    /// @param _challenger          The address of the challenger.
    constructor(
        uint256 _submissionInterval,
        uint256 _l2BlockTime,
        uint256 _startingBlockNumber,
        uint256 _startingTimestamp,
        address _proposer,
        address _challenger,
        uint256 _finalizationPeriodSeconds
    ) Semver(1, 3, 1) {
        require(_l2BlockTime > 0, "L2OutputOracle: L2 block time must be greater than 0");
        require(
            _submissionInterval > 0,
            "L2OutputOracle: submission interval must be greater than 0"
        );

        SUBMISSION_INTERVAL = _submissionInterval;
        L2_BLOCK_TIME = _l2BlockTime;
        PROPOSER = _proposer;
        CHALLENGER = _challenger;
        FINALIZATION_PERIOD_SECONDS = _finalizationPeriodSeconds;

        initialize(_startingBlockNumber, _startingTimestamp);
    }

    /// @notice Initializer.
    /// @param _startingBlockNumber Block number for the first recoded L2 block.
    /// @param _startingTimestamp   Timestamp for the first recoded L2 block.
    function initialize(uint256 _startingBlockNumber, uint256 _startingTimestamp)
        public
        initializer
    {
        require(
            _startingTimestamp <= block.timestamp,
            "L2OutputOracle: starting L2 timestamp must be less than current time"
        );

        startingTimestamp = _startingTimestamp;
        startingBlockNumber = _startingBlockNumber;
    }

    /// @notice Deletes all output proposals after and including the proposal that corresponds to
    ///         the given output index. Only the challenger address can delete outputs.
    /// @param _l2OutputIndex Index of the first L2 output to be deleted.
    ///                       All outputs after this output will also be deleted.
    // solhint-disable-next-line ordering
    function deleteL2Outputs(uint256 _l2OutputIndex) external {
        require(
            msg.sender == CHALLENGER,
            "L2OutputOracle: only the challenger address can delete outputs"
        );

        // Make sure we're not *increasing* the length of the array.
        require(
            _l2OutputIndex < l2Outputs.length,
            "L2OutputOracle: cannot delete outputs after the latest output index"
        );

        // Do not allow deleting any outputs that have already been finalized.
        require(
            block.timestamp - l2Outputs[_l2OutputIndex].timestamp < FINALIZATION_PERIOD_SECONDS,
            "L2OutputOracle: cannot delete outputs that have already been finalized"
        );

        uint256 prevNextL2OutputIndex = nextOutputIndex();

        // Use assembly to delete the array elements because Solidity doesn't allow it.
        assembly {
            sstore(l2Outputs.slot, _l2OutputIndex)
        }

        emit OutputsDeleted(prevNextL2OutputIndex, _l2OutputIndex);
    }

    /// @notice Accepts an outputRoot and the timestamp of the corresponding L2 block.
    ///         The timestamp must be equal to the current value returned by `nextTimestamp()` in
    ///         order to be accepted. This function may only be called by the Proposer.
    /// @param _outputRoot    The L2 output of the checkpoint block.
    /// @param _l2BlockNumber The L2 block number that resulted in _outputRoot.
    /// @param _l1BlockHash   A block hash which must be included in the current chain.
    /// @param _l1BlockNumber The block number with the specified block hash.
    function proposeL2Output(
        bytes32 _outputRoot,
        uint256 _l2BlockNumber,
        bytes32 _l1BlockHash,
        uint256 _l1BlockNumber
    ) external payable {
        require(
            msg.sender == PROPOSER,
            "L2OutputOracle: only the proposer address can propose new outputs"
        );

        require(
            _l2BlockNumber == nextBlockNumber(),
            "L2OutputOracle: block number must be equal to next expected block number"
        );

        require(
            computeL2Timestamp(_l2BlockNumber) < block.timestamp,
            "L2OutputOracle: cannot propose L2 output in the future"
        );

        require(
            _outputRoot != bytes32(0),
            "L2OutputOracle: L2 output proposal cannot be the zero hash"
        );

        if (_l1BlockHash != bytes32(0)) {
            // This check allows the proposer to propose an output based on a given L1 block,
            // without fear that it will be reorged out.
            // It will also revert if the blockheight provided is more than 256 blocks behind the
            // chain tip (as the hash will return as zero). This does open the door to a griefing
            // attack in which the proposer's submission is censored until the block is no longer
            // retrievable, if the proposer is experiencing this attack it can simply leave out the
            // blockhash value, and delay submission until it is confident that the L1 block is
            // finalized.
            require(
                blockhash(_l1BlockNumber) == _l1BlockHash,
                "L2OutputOracle: block hash does not match the hash at the expected height"
            );
        }

        emit OutputProposed(_outputRoot, nextOutputIndex(), _l2BlockNumber, block.timestamp);

        l2Outputs.push(
            Types.OutputProposal({
                outputRoot: _outputRoot,
                timestamp: uint128(block.timestamp),
                l2BlockNumber: uint128(_l2BlockNumber)
            })
        );
    }

    /// @notice Returns an output by index. Needed to return a struct instead of a tuple.
    /// @param _l2OutputIndex Index of the output to return.
    /// @return The output at the given index.
    function getL2Output(uint256 _l2OutputIndex)
        external
        view
        returns (Types.OutputProposal memory)
    {
        return l2Outputs[_l2OutputIndex];
    }

    /// @notice Returns the index of the L2 output that checkpoints a given L2 block number.
    ///         Uses a binary search to find the first output greater than or equal to the given
    ///         block.
    /// @param _l2BlockNumber L2 block number to find a checkpoint for.
    /// @return Index of the first checkpoint that commits to the given L2 block number.
    function getL2OutputIndexAfter(uint256 _l2BlockNumber) public view returns (uint256) {
        // Make sure an output for this block number has actually been proposed.
        require(
            _l2BlockNumber <= latestBlockNumber(),
            "L2OutputOracle: cannot get output for a block that has not been proposed"
        );

        // Make sure there's at least one output proposed.
        require(
            l2Outputs.length > 0,
            "L2OutputOracle: cannot get output as no outputs have been proposed yet"
        );

        // Find the output via binary search, guaranteed to exist.
        uint256 lo = 0;
        uint256 hi = l2Outputs.length;
        while (lo < hi) {
            uint256 mid = (lo + hi) / 2;
            if (l2Outputs[mid].l2BlockNumber < _l2BlockNumber) {
                lo = mid + 1;
            } else {
                hi = mid;
            }
        }

        return lo;
    }

    /// @notice Returns the L2 output proposal that checkpoints a given L2 block number.
    ///         Uses a binary search to find the first output greater than or equal to the given
    ///         block.
    /// @param _l2BlockNumber L2 block number to find a checkpoint for.
    /// @return First checkpoint that commits to the given L2 block number.
    function getL2OutputAfter(uint256 _l2BlockNumber)
        external
        view
        returns (Types.OutputProposal memory)
    {
        return l2Outputs[getL2OutputIndexAfter(_l2BlockNumber)];
    }

    /// @notice Returns the number of outputs that have been proposed.
    ///         Will revert if no outputs have been proposed yet.
    /// @return The number of outputs that have been proposed.
    function latestOutputIndex() external view returns (uint256) {
        return l2Outputs.length - 1;
    }

    /// @notice Returns the index of the next output to be proposed.
    /// @return The index of the next output to be proposed.
    function nextOutputIndex() public view returns (uint256) {
        return l2Outputs.length;
    }

    /// @notice Returns the block number of the latest submitted L2 output proposal.
    ///         If no proposals been submitted yet then this function will return the starting
    ///         block number.
    /// @return Latest submitted L2 block number.
    function latestBlockNumber() public view returns (uint256) {
        return
            l2Outputs.length == 0
                ? startingBlockNumber
                : l2Outputs[l2Outputs.length - 1].l2BlockNumber;
    }

    /// @notice Computes the block number of the next L2 block that needs to be checkpointed.
    /// @return Next L2 block number.
    function nextBlockNumber() public view returns (uint256) {
        return latestBlockNumber() + SUBMISSION_INTERVAL;
    }

    /// @notice Returns the L2 timestamp corresponding to a given L2 block number.
    /// @param _l2BlockNumber The L2 block number of the target block.
    /// @return L2 timestamp of the given block.
    function computeL2Timestamp(uint256 _l2BlockNumber) public view returns (uint256) {
        return startingTimestamp + ((_l2BlockNumber - startingBlockNumber) * L2_BLOCK_TIME);
    }
}

File 2 of 6 : Initializable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/Address.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized < type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }
}

File 3 of 6 : Semver.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";

/// @title Semver
/// @notice Semver is a simple contract for managing contract versions.
contract Semver {
    /// @notice Contract version number (major).
    uint256 private immutable MAJOR_VERSION;

    /// @notice Contract version number (minor).
    uint256 private immutable MINOR_VERSION;

    /// @notice Contract version number (patch).
    uint256 private immutable PATCH_VERSION;

    /// @param _major Version number (major).
    /// @param _minor Version number (minor).
    /// @param _patch Version number (patch).
    constructor(
        uint256 _major,
        uint256 _minor,
        uint256 _patch
    ) {
        MAJOR_VERSION = _major;
        MINOR_VERSION = _minor;
        PATCH_VERSION = _patch;
    }

    /// @notice Returns the full semver contract version.
    /// @return Semver contract version as a string.
    function version() public view returns (string memory) {
        return
            string(
                abi.encodePacked(
                    Strings.toString(MAJOR_VERSION),
                    ".",
                    Strings.toString(MINOR_VERSION),
                    ".",
                    Strings.toString(PATCH_VERSION)
                )
            );
    }
}

File 4 of 6 : Types.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

/// @title Types
/// @notice Contains various types used throughout the Optimism contract system.
library Types {
    /// @notice OutputProposal represents a commitment to the L2 state. The timestamp is the L1
    ///         timestamp that the output root is posted. This timestamp is used to verify that the
    ///         finalization period has passed since the output root was submitted.
    /// @custom:field outputRoot    Hash of the L2 output.
    /// @custom:field timestamp     Timestamp of the L1 block that the output root was submitted in.
    /// @custom:field l2BlockNumber L2 block number that the output corresponds to.
    struct OutputProposal {
        bytes32 outputRoot;
        uint128 timestamp;
        uint128 l2BlockNumber;
    }

    /// @notice Struct representing the elements that are hashed together to generate an output root
    ///         which itself represents a snapshot of the L2 state.
    /// @custom:field version                  Version of the output root.
    /// @custom:field stateRoot                Root of the state trie at the block of this output.
    /// @custom:field messagePasserStorageRoot Root of the message passer storage trie.
    /// @custom:field latestBlockhash          Hash of the block this output was generated from.
    struct OutputRootProof {
        bytes32 version;
        bytes32 stateRoot;
        bytes32 messagePasserStorageRoot;
        bytes32 latestBlockhash;
    }

    /// @notice Struct representing a deposit transaction (L1 => L2 transaction) created by an end
    ///         user (as opposed to a system deposit transaction generated by the system).
    /// @custom:field from        Address of the sender of the transaction.
    /// @custom:field to          Address of the recipient of the transaction.
    /// @custom:field isCreation  True if the transaction is a contract creation.
    /// @custom:field value       Value to send to the recipient.
    /// @custom:field mint        Amount of ETH to mint.
    /// @custom:field gasLimit    Gas limit of the transaction.
    /// @custom:field data        Data of the transaction.
    /// @custom:field l1BlockHash Hash of the block the transaction was submitted in.
    /// @custom:field logIndex    Index of the log in the block the transaction was submitted in.
    struct UserDepositTransaction {
        address from;
        address to;
        bool isCreation;
        uint256 value;
        uint256 mint;
        uint64 gasLimit;
        bytes data;
        bytes32 l1BlockHash;
        uint256 logIndex;
    }

    /// @notice Struct representing a withdrawal transaction.
    /// @custom:field nonce    Nonce of the withdrawal transaction
    /// @custom:field sender   Address of the sender of the transaction.
    /// @custom:field target   Address of the recipient of the transaction.
    /// @custom:field value    Value to send to the recipient.
    /// @custom:field gasLimit Gas limit of the transaction.
    /// @custom:field data     Data of the transaction.
    struct WithdrawalTransaction {
        uint256 nonce;
        address sender;
        address target;
        uint256 value;
        uint256 gasLimit;
        bytes data;
    }
}

File 5 of 6 : Address.sol
// 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 functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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);
            }
        }
    }
}

File 6 of 6 : Strings.sol
// 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);
    }
}

Settings
{
  "remappings": [
    "@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/",
    "@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/",
    "@rari-capital/solmate/=node_modules/@rari-capital/solmate/",
    "@cwia/=node_modules/clones-with-immutable-args/src/",
    "forge-std/=node_modules/forge-std/src/",
    "ds-test/=node_modules/ds-test/src/",
    "clones-with-immutable-args/=node_modules/clones-with-immutable-args/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "none"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"uint256","name":"_submissionInterval","type":"uint256"},{"internalType":"uint256","name":"_l2BlockTime","type":"uint256"},{"internalType":"uint256","name":"_startingBlockNumber","type":"uint256"},{"internalType":"uint256","name":"_startingTimestamp","type":"uint256"},{"internalType":"address","name":"_proposer","type":"address"},{"internalType":"address","name":"_challenger","type":"address"},{"internalType":"uint256","name":"_finalizationPeriodSeconds","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"outputRoot","type":"bytes32"},{"indexed":true,"internalType":"uint256","name":"l2OutputIndex","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"l2BlockNumber","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"l1Timestamp","type":"uint256"}],"name":"OutputProposed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"prevNextOutputIndex","type":"uint256"},{"indexed":true,"internalType":"uint256","name":"newNextOutputIndex","type":"uint256"}],"name":"OutputsDeleted","type":"event"},{"inputs":[],"name":"CHALLENGER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"FINALIZATION_PERIOD_SECONDS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"L2_BLOCK_TIME","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"SUBMISSION_INTERVAL","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_l2BlockNumber","type":"uint256"}],"name":"computeL2Timestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_l2OutputIndex","type":"uint256"}],"name":"deleteL2Outputs","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_l2OutputIndex","type":"uint256"}],"name":"getL2Output","outputs":[{"components":[{"internalType":"bytes32","name":"outputRoot","type":"bytes32"},{"internalType":"uint128","name":"timestamp","type":"uint128"},{"internalType":"uint128","name":"l2BlockNumber","type":"uint128"}],"internalType":"struct Types.OutputProposal","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_l2BlockNumber","type":"uint256"}],"name":"getL2OutputAfter","outputs":[{"components":[{"internalType":"bytes32","name":"outputRoot","type":"bytes32"},{"internalType":"uint128","name":"timestamp","type":"uint128"},{"internalType":"uint128","name":"l2BlockNumber","type":"uint128"}],"internalType":"struct Types.OutputProposal","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_l2BlockNumber","type":"uint256"}],"name":"getL2OutputIndexAfter","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_startingBlockNumber","type":"uint256"},{"internalType":"uint256","name":"_startingTimestamp","type":"uint256"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"latestBlockNumber","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestOutputIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextBlockNumber","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nextOutputIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_outputRoot","type":"bytes32"},{"internalType":"uint256","name":"_l2BlockNumber","type":"uint256"},{"internalType":"bytes32","name":"_l1BlockHash","type":"bytes32"},{"internalType":"uint256","name":"_l1BlockNumber","type":"uint256"}],"name":"proposeL2Output","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"startingBlockNumber","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"startingTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

Deployed Bytecode

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

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
[ Download: CSV Export  ]

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.