Holesky Testnet

Contract

0xB877915d8Ba049e7cAFc1525F85CEc322A362767

Overview

ETH Balance

0 ETH

Multichain Info

N/A
Transaction Hash
Method
Block
From
To
Submit Level Ins...33118042025-02-08 16:11:4836 mins ago1739031108IN
0xB877915d...22A362767
0 ETH0.000000280.00240003
Create Level Ins...33116032025-02-08 15:29:361 hr ago1739028576IN
0xB877915d...22A362767
0 ETH0.000000810.00240002
Submit Level Ins...33109622025-02-08 13:10:363 hrs ago1739020236IN
0xB877915d...22A362767
0 ETH00.00010001
Create Level Ins...33103042025-02-08 10:51:245 hrs ago1739011884IN
0xB877915d...22A362767
0 ETH0.000000840.00200003
Submit Level Ins...33103022025-02-08 10:51:005 hrs ago1739011860IN
0xB877915d...22A362767
0 ETH0.000000470.00200003
Create Level Ins...33102852025-02-08 10:47:126 hrs ago1739011632IN
0xB877915d...22A362767
0 ETH0.00000150.00200003
Create Level Ins...33101832025-02-08 10:25:486 hrs ago1739010348IN
0xB877915d...22A362767
0 ETH0.000000730.00200002
Create Level Ins...33101832025-02-08 10:25:486 hrs ago1739010348IN
0xB877915d...22A362767
0 ETH0.000000840.00200002
Submit Level Ins...33100052025-02-08 9:48:247 hrs ago1739008104IN
0xB877915d...22A362767
0 ETH0.000000480.00220003
Submit Level Ins...33099292025-02-08 9:31:487 hrs ago1739007108IN
0xB877915d...22A362767
0 ETH0.000000260.00200002
Create Level Ins...33099212025-02-08 9:30:127 hrs ago1739007012IN
0xB877915d...22A362767
0 ETH0.00000150.00200003
Submit Level Ins...33048792025-02-07 15:38:1225 hrs ago1738942692IN
0xB877915d...22A362767
0 ETH0.000000370.00200003
Create Level Ins...33048692025-02-07 15:36:1225 hrs ago1738942572IN
0xB877915d...22A362767
0 ETH0.000000770.00200003
Submit Level Ins...33047522025-02-07 15:11:2425 hrs ago1738941084IN
0xB877915d...22A362767
0 ETH0.000000370.00200003
Create Level Ins...33047392025-02-07 15:08:4825 hrs ago1738940928IN
0xB877915d...22A362767
0 ETH0.000000840.00200003
Submit Level Ins...33046202025-02-07 14:43:3626 hrs ago1738939416IN
0xB877915d...22A362767
0 ETH0.000000360.00200003
Submit Level Ins...33045772025-02-07 14:34:4826 hrs ago1738938888IN
0xB877915d...22A362767
0 ETH0.000000470.00200003
Create Level Ins...33045562025-02-07 14:30:2426 hrs ago1738938624IN
0xB877915d...22A362767
0 ETH0.000001260.00200004
Create Level Ins...33044352025-02-07 14:04:2426 hrs ago1738937064IN
0xB877915d...22A362767
0 ETH0.000001260.00200003
Create Level Ins...33044332025-02-07 14:04:0026 hrs ago1738937040IN
0xB877915d...22A362767
0 ETH0.00000150.00200003
Submit Level Ins...33035202025-02-07 10:47:2430 hrs ago1738925244IN
0xB877915d...22A362767
0 ETH00.00010001
Submit Level Ins...33032102025-02-07 9:39:3631 hrs ago1738921176IN
0xB877915d...22A362767
0 ETH0.000000170.00094001
Create Level Ins...33023332025-02-07 6:31:1234 hrs ago1738909872IN
0xB877915d...22A362767
0 ETH0.000000350.00094001
Submit Level Ins...33023282025-02-07 6:30:1234 hrs ago1738909812IN
0xB877915d...22A362767
0 ETH0.000000120.00094001
Create Level Ins...33023022025-02-07 6:25:0034 hrs ago1738909500IN
0xB877915d...22A362767
0 ETH0.000000320.00094001
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Latest 25 internal transactions (View All)

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Parent Transaction Hash Block
From
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32980932025-02-06 15:31:362 days ago1738855896
0xB877915d...22A362767
0.001 ETH
32978422025-02-06 14:39:002 days ago1738852740
0xB877915d...22A362767
0.001 ETH
32975882025-02-06 13:43:002 days ago1738849380
0xB877915d...22A362767
0.001 ETH
32964342025-02-06 9:38:242 days ago1738834704
0xB877915d...22A362767
0.001 ETH
32841302025-02-04 13:42:124 days ago1738676532
0xB877915d...22A362767
0.001 ETH
32841172025-02-04 13:39:244 days ago1738676364
0xB877915d...22A362767
0.001 ETH
32839822025-02-04 13:11:124 days ago1738674672
0xB877915d...22A362767
0.001 ETH
32839552025-02-04 13:05:364 days ago1738674336
0xB877915d...22A362767
0.001 ETH
32784222025-02-03 17:25:124 days ago1738603512
0xB877915d...22A362767
0.001 ETH
32773182025-02-03 13:29:365 days ago1738589376
0xB877915d...22A362767
0.001 ETH
32708632025-02-02 14:02:006 days ago1738504920
0xB877915d...22A362767
0.001 ETH
32656502025-02-01 19:29:366 days ago1738438176
0xB877915d...22A362767
0.001 ETH
32654212025-02-01 18:40:246 days ago1738435224
0xB877915d...22A362767
0.001 ETH
32643362025-02-01 14:49:127 days ago1738421352
0xB877915d...22A362767
0.001 ETH
32642722025-02-01 14:36:007 days ago1738420560
0xB877915d...22A362767
0.001 ETH
32641552025-02-01 14:10:487 days ago1738419048
0xB877915d...22A362767
0.001 ETH
32641152025-02-01 14:02:367 days ago1738418556
0xB877915d...22A362767
0.001 ETH
32547522025-01-31 4:04:008 days ago1738296240
0xB877915d...22A362767
0.001 ETH
32535312025-01-30 23:44:248 days ago1738280664
0xB877915d...22A362767
0.001 ETH
32521722025-01-30 18:54:248 days ago1738263264
0xB877915d...22A362767
0.001 ETH
32521702025-01-30 18:54:008 days ago1738263240
0xB877915d...22A362767
0.001 ETH
32515232025-01-30 16:36:009 days ago1738254960
0xB877915d...22A362767
0.001 ETH
32510192025-01-30 14:50:009 days ago1738248600
0xB877915d...22A362767
0.001 ETH
32501772025-01-30 11:49:369 days ago1738237776
0xB877915d...22A362767
0.001 ETH
32499042025-01-30 10:51:249 days ago1738234284
0xB877915d...22A362767
0.001 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
Ethernaut

Compiler Version
v0.8.12+commit.f00d7308

Optimization Enabled:
Yes with 1000 runs

Other Settings:
default evmVersion, MIT license
/**
 *Submitted for verification at Etherscan.io on 2024-01-12
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)




// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)



/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}


abstract contract Level is Ownable {
  function createInstance(address _player) virtual public payable returns (address);
  function validateInstance(address payable _instance, address _player) virtual public returns (bool);
}

interface IStatistics {
    function saveNewLevel(address level) external;

    function createNewInstance(
        address instance,
        address level,
        address player
    ) external;

    function submitFailure(
        address instance,
        address level,
        address player
    ) external;

    function submitSuccess(
        address instance,
        address level,
        address player
    ) external;
}

contract Ethernaut is Ownable {
    IStatistics public statistics;

    // ----------------------------------
    // Owner interaction
    // ----------------------------------

    mapping(address => bool) public registeredLevels;

    // Only registered levels will be allowed to generate and validate level instances.
    function registerLevel(Level _level) public onlyOwner {
        registeredLevels[address(_level)] = true;
        statistics.saveNewLevel(address(_level));
    }

    function setStatistics(address _statProxy) external onlyOwner {
        statistics = IStatistics(_statProxy);
    }

    // ----------------------------------
    // Get/submit level instances
    // ----------------------------------

    struct EmittedInstanceData {
        address player;
        Level level;
        bool completed;
    }

    mapping(address => EmittedInstanceData) public emittedInstances;

    event LevelInstanceCreatedLog(
        address indexed player,
        address indexed instance,
        address indexed level
    );
    event LevelCompletedLog(
        address indexed player,
        address indexed instance,
        address indexed level
    );

    function createLevelInstance(Level _level) public payable {
        // Ensure level is registered.
        require(registeredLevels[address(_level)], "This level doesn't exists");

        // Get level factory to create an instance.
        address instance = _level.createInstance{value: msg.value}(msg.sender);

        // Store emitted instance relationship with player and level.
        emittedInstances[instance] = EmittedInstanceData(
            msg.sender,
            _level,
            false
        );

        statistics.createNewInstance(instance, address(_level), msg.sender);

        // Retrieve created instance via logs.
        emit LevelInstanceCreatedLog(msg.sender, instance, address(_level));
    }

    function submitLevelInstance(address payable _instance) public {
        // Get player and level.
        EmittedInstanceData storage data = emittedInstances[_instance];
        require(
            data.player == msg.sender,
            "This instance doesn't belong to the current user"
        ); // instance was emitted for this player
        require(data.completed == false, "Level has been completed already"); // not already submitted

        // Have the level check the instance.
        if (data.level.validateInstance(_instance, msg.sender)) {
            // Register instance as completed.
            data.completed = true;

            statistics.submitSuccess(
                _instance,
                address(data.level),
                msg.sender
            );
            // Notify success via logs.
            emit LevelCompletedLog(msg.sender, _instance, address(data.level));
        } else {
            statistics.submitFailure(
                _instance,
                address(data.level),
                msg.sender
            );
        }
    }
}

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"player","type":"address"},{"indexed":true,"internalType":"address","name":"instance","type":"address"},{"indexed":true,"internalType":"address","name":"level","type":"address"}],"name":"LevelCompletedLog","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"player","type":"address"},{"indexed":true,"internalType":"address","name":"instance","type":"address"},{"indexed":true,"internalType":"address","name":"level","type":"address"}],"name":"LevelInstanceCreatedLog","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"contract Level","name":"_level","type":"address"}],"name":"createLevelInstance","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"emittedInstances","outputs":[{"internalType":"address","name":"player","type":"address"},{"internalType":"contract Level","name":"level","type":"address"},{"internalType":"bool","name":"completed","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract Level","name":"_level","type":"address"}],"name":"registerLevel","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"registeredLevels","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_statProxy","type":"address"}],"name":"setStatistics","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"statistics","outputs":[{"internalType":"contract IStatistics","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"_instance","type":"address"}],"name":"submitLevelInstance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

ipfs://b6cdd57c7c4ed65e880fa59c764242d6a66b9aca01b6e2243fcd8f13636158ae

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