Moonbase Alpha Testnet

Contract

0x7F83F5cA2AE4206AbFf8a3C3668e88ce5F11C0B5

Overview

DEV Balance

Moonbase Alpha LogoMoonbase Alpha LogoMoonbase Alpha Logo0 DEV

Multichain Info

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Transaction Hash
Method
Block
From
To
Value
Execute Contract75584492024-06-23 0:00:184 hrs ago1719100818IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75517902024-06-22 12:00:3016 hrs ago1719057630IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75452532024-06-22 0:00:1828 hrs ago1719014418IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75384912024-06-21 12:00:1840 hrs ago1718971218IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75337342024-06-21 3:13:062 days ago1718939586IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000034820.126
Execute Contract75319732024-06-21 0:00:362 days ago1718928036IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000332881.2
Execute Contract75319722024-06-21 0:00:302 days ago1718928030IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75254752024-06-20 12:00:182 days ago1718884818IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75187782024-06-20 0:00:183 days ago1718841618IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75121732024-06-19 12:00:183 days ago1718798418IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract75055712024-06-19 0:00:304 days ago1718755230IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068720.126
Execute Contract75055692024-06-19 0:00:124 days ago1718755212IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000034950.126
Execute Contract74987732024-06-18 12:00:184 days ago1718712018IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract74921802024-06-18 0:00:185 days ago1718668818IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068720.126
Execute Contract74856182024-06-17 12:00:185 days ago1718625618IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract74789002024-06-17 0:01:006 days ago1718582460IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract74789002024-06-17 0:01:006 days ago1718582460IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000034950.126
Execute Contract74721362024-06-16 12:00:186 days ago1718539218IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract74653982024-06-16 0:00:187 days ago1718496018IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126
Execute Contract74587692024-06-15 12:00:187 days ago1718452818IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068720.126
Execute Contract74520662024-06-15 0:00:248 days ago1718409624IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068740.126
Execute Contract74493012024-06-14 18:55:308 days ago1718391330IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000034820.126
Execute Contract74492282024-06-14 18:47:428 days ago1718390862IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000034820.126
Execute Contract74490922024-06-14 18:33:308 days ago1718390010IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000034820.126
Execute Contract74454552024-06-14 12:00:188 days ago1718366418IN
0x7F83F5cA...e5F11C0B5
0 DEV0.000068730.126

Latest 25 internal transactions (View All)

Parent Transaction Hash Block From To Value
75584492024-06-23 0:00:184 hrs ago1719100818
0x7F83F5cA...e5F11C0B5
0 DEV
75517902024-06-22 12:00:3016 hrs ago1719057630
0x7F83F5cA...e5F11C0B5
0 DEV
75452532024-06-22 0:00:1828 hrs ago1719014418
0x7F83F5cA...e5F11C0B5
0 DEV
75384912024-06-21 12:00:1840 hrs ago1718971218
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0 DEV
75337342024-06-21 3:13:062 days ago1718939586
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0 DEV
75319732024-06-21 0:00:362 days ago1718928036
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0 DEV
75319722024-06-21 0:00:302 days ago1718928030
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0 DEV
75254752024-06-20 12:00:182 days ago1718884818
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0 DEV
75187782024-06-20 0:00:183 days ago1718841618
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0 DEV
75121732024-06-19 12:00:183 days ago1718798418
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75055712024-06-19 0:00:304 days ago1718755230
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75055692024-06-19 0:00:124 days ago1718755212
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74987732024-06-18 12:00:184 days ago1718712018
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0 DEV
74921802024-06-18 0:00:185 days ago1718668818
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74856182024-06-17 12:00:185 days ago1718625618
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74789002024-06-17 0:01:006 days ago1718582460
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74789002024-06-17 0:01:006 days ago1718582460
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74721362024-06-16 12:00:186 days ago1718539218
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74653982024-06-16 0:00:187 days ago1718496018
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74587692024-06-15 12:00:187 days ago1718452818
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74520662024-06-15 0:00:248 days ago1718409624
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74493012024-06-14 18:55:308 days ago1718391330
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0 DEV
74492282024-06-14 18:47:428 days ago1718390862
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74490922024-06-14 18:33:308 days ago1718390010
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74454552024-06-14 12:00:188 days ago1718366418
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0 DEV
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xB77A61a2...3a319b1DD
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
Operators

Compiler Version
v0.8.19+commit.7dd6d404

Optimization Enabled:
Yes with 1000000 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 5 : Operators.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IOperators } from '../interfaces/IOperators.sol';
import { Ownable } from './Ownable.sol';

/**
 * @title Operators
 * @notice This contract provides an access control mechanism, where an owner can register
 * operator accounts that can call arbitrary contracts on behalf of this contract.
 * @dev The owner account is initially set as the deployer address.
 */
contract Operators is Ownable, IOperators {
    mapping(address => bool) public operators;

    /**
     * @notice Sets the initial owner of the contract.
     */
    constructor(address initialOwner) Ownable(initialOwner) {}

    /**
     * @notice Modifier that requires the `msg.sender` to be an operator.
     * @dev Reverts with a NotOperator error if the condition is not met.
     */
    modifier onlyOperator() {
        if (!operators[msg.sender]) revert NotOperator();
        _;
    }

    /**
     * @notice Returns whether an address is an operator.
     * @param account Address to check
     * @return boolean whether the address is an operator
     */
    function isOperator(address account) external view returns (bool) {
        return operators[account];
    }

    /**
     * @notice Adds an address as an operator.
     * @dev Can only be called by the current owner.
     * @param operator address to be added as operator
     */
    function addOperator(address operator) external onlyOwner {
        if (operator == address(0)) revert InvalidOperator();
        if (operators[operator]) revert OperatorAlreadyAdded();

        operators[operator] = true;

        emit OperatorAdded(operator);
    }

    /**
     * @notice Removes an address as an operator.
     * @dev Can only be called by the current owner.
     * @param operator address to be removed as operator
     */
    function removeOperator(address operator) external onlyOwner {
        if (operator == address(0)) revert InvalidOperator();
        if (!operators[operator]) revert NotAnOperator();

        operators[operator] = false;

        emit OperatorRemoved(operator);
    }

    /**
     * @notice Allows an operator to execute arbitrary functions on any smart contract.
     * @dev Can only be called by an operator.
     * @param target address of the contract to execute the function on. Existence is not checked.
     * @param callData ABI encoded function call to execute on target
     * @param nativeValue The amount of native asset to send with the call. If `nativeValue` is set to `0`, then `msg.value` is forwarded instead.
     * @return data return data from executed function call
     */
    function executeContract(
        address target,
        bytes calldata callData,
        uint256 nativeValue
    ) external payable onlyOperator returns (bytes memory) {
        if (nativeValue == 0) {
            nativeValue = msg.value;
        }

        (bool success, bytes memory data) = target.call{ value: nativeValue }(callData);
        if (!success) {
            revert ExecutionFailed();
        }

        return data;
    }

    /**
     * @notice This function enables the contract to accept native value transfers.
     */
    receive() external payable {}
}

File 2 of 5 : IContractExecutor.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IContractExecutor Interface
 * @notice This interface defines the execute function used to interact with external contracts.
 */
interface IContractExecutor {
    /**
     * @notice Executes a call to an external contract.
     * @dev Execution logic is left up to the implementation.
     * @param target The address of the contract to be called
     * @param callData The calldata to be sent
     * @param nativeValue The amount of native token (e.g., Ether) to be sent along with the call
     * @return bytes The data returned from the executed call
     */
    function executeContract(
        address target,
        bytes calldata callData,
        uint256 nativeValue
    ) external payable returns (bytes memory);
}

File 3 of 5 : IOperators.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IOwnable } from './IOwnable.sol';
import { IContractExecutor } from './IContractExecutor.sol';

/**
 * @title IOperators Interface
 * @notice Interface for an access control mechanism where operators have exclusive
 * permissions to execute functions.
 */
interface IOperators is IOwnable, IContractExecutor {
    error NotOperator();
    error InvalidOperator();
    error OperatorAlreadyAdded();
    error NotAnOperator();
    error ExecutionFailed();

    event OperatorAdded(address indexed operator);
    event OperatorRemoved(address indexed operator);

    /**
     * @notice Check if an account is an operator.
     * @param account Address of the account to check
     * @return bool True if the account is an operator, false otherwise
     */
    function isOperator(address account) external view returns (bool);

    /**
     * @notice Adds an operator.
     * @param operator The address to add as an operator
     */
    function addOperator(address operator) external;

    /**
     * @notice Removes an operator.
     * @param operator The address of the operator to remove
     */
    function removeOperator(address operator) external;

    /**
     * @notice Executes an external contract call.
     * @dev Execution logic is left up to the implementation.
     * @param target The contract to call
     * @param callData The data to call the target contract with
     * @param nativeValue The amount of native asset to send with the call
     * @return bytes The data returned from the contract call
     */
    function executeContract(
        address target,
        bytes calldata callData,
        uint256 nativeValue
    ) external payable returns (bytes memory);
}

File 4 of 5 : IOwnable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title IOwnable Interface
 * @notice IOwnable is an interface that abstracts the implementation of a
 * contract with ownership control features. It's commonly used in upgradable
 * contracts and includes the functionality to get current owner, transfer
 * ownership, and propose and accept ownership.
 */
interface IOwnable {
    error NotOwner();
    error InvalidOwner();
    error InvalidOwnerAddress();

    event OwnershipTransferStarted(address indexed newOwner);
    event OwnershipTransferred(address indexed newOwner);

    /**
     * @notice Returns the current owner of the contract.
     * @return address The address of the current owner
     */
    function owner() external view returns (address);

    /**
     * @notice Returns the address of the pending owner of the contract.
     * @return address The address of the pending owner
     */
    function pendingOwner() external view returns (address);

    /**
     * @notice Transfers ownership of the contract to a new address
     * @param newOwner The address to transfer ownership to
     */
    function transferOwnership(address newOwner) external;

    /**
     * @notice Proposes to transfer the contract's ownership to a new address.
     * The new owner needs to accept the ownership explicitly.
     * @param newOwner The address to transfer ownership to
     */
    function proposeOwnership(address newOwner) external;

    /**
     * @notice Transfers ownership to the pending owner.
     * @dev Can only be called by the pending owner
     */
    function acceptOwnership() external;
}

File 5 of 5 : Ownable.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IOwnable } from '../interfaces/IOwnable.sol';

/**
 * @title Ownable
 * @notice A 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.
 *
 * The owner account is set through ownership transfer. This module makes
 * it possible to transfer the ownership of the contract to a new account in one
 * step, as well as to an interim pending owner. In the second flow the ownership does not
 * change until the pending owner accepts the ownership transfer.
 */
abstract contract Ownable is IOwnable {
    // keccak256('owner')
    bytes32 internal constant _OWNER_SLOT = 0x02016836a56b71f0d02689e69e326f4f4c1b9057164ef592671cf0d37c8040c0;
    // keccak256('ownership-transfer')
    bytes32 internal constant _OWNERSHIP_TRANSFER_SLOT =
        0x9855384122b55936fbfb8ca5120e63c6537a1ac40caf6ae33502b3c5da8c87d1;

    /**
     * @notice Initializes the contract by transferring ownership to the owner parameter.
     * @param _owner Address to set as the initial owner of the contract
     */
    constructor(address _owner) {
        _transferOwnership(_owner);
    }

    /**
     * @notice Modifier that throws an error if called by any account other than the owner.
     */
    modifier onlyOwner() {
        if (owner() != msg.sender) revert NotOwner();

        _;
    }

    /**
     * @notice Returns the current owner of the contract.
     * @return owner_ The current owner of the contract
     */
    function owner() public view returns (address owner_) {
        assembly {
            owner_ := sload(_OWNER_SLOT)
        }
    }

    /**
     * @notice Returns the pending owner of the contract.
     * @return owner_ The pending owner of the contract
     */
    function pendingOwner() public view returns (address owner_) {
        assembly {
            owner_ := sload(_OWNERSHIP_TRANSFER_SLOT)
        }
    }

    /**
     * @notice Transfers ownership of the contract to a new account `newOwner`.
     * @dev Can only be called by the current owner.
     * @param newOwner The address to transfer ownership to
     */
    function transferOwnership(address newOwner) external virtual onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @notice Propose to transfer ownership of the contract to a new account `newOwner`.
     * @dev Can only be called by the current owner. The ownership does not change
     * until the new owner accepts the ownership transfer.
     * @param newOwner The address to transfer ownership to
     */
    function proposeOwnership(address newOwner) external virtual onlyOwner {
        if (newOwner == address(0)) revert InvalidOwnerAddress();

        emit OwnershipTransferStarted(newOwner);

        assembly {
            sstore(_OWNERSHIP_TRANSFER_SLOT, newOwner)
        }
    }

    /**
     * @notice Accepts ownership of the contract.
     * @dev Can only be called by the pending owner
     */
    function acceptOwnership() external virtual {
        address newOwner = pendingOwner();
        if (newOwner != msg.sender) revert InvalidOwner();

        _transferOwnership(newOwner);
    }

    /**
     * @notice Internal function to transfer ownership of the contract to a new account `newOwner`.
     * @dev Called in the constructor to set the initial owner.
     * @param newOwner The address to transfer ownership to
     */
    function _transferOwnership(address newOwner) internal virtual {
        if (newOwner == address(0)) revert InvalidOwnerAddress();

        emit OwnershipTransferred(newOwner);

        assembly {
            sstore(_OWNER_SLOT, newOwner)
            sstore(_OWNERSHIP_TRANSFER_SLOT, 0)
        }
    }
}

Settings
{
  "evmVersion": "london",
  "optimizer": {
    "enabled": true,
    "runs": 1000000,
    "details": {
      "peephole": true,
      "inliner": true,
      "jumpdestRemover": true,
      "orderLiterals": true,
      "deduplicate": true,
      "cse": true,
      "constantOptimizer": true,
      "yul": true,
      "yulDetails": {
        "stackAllocation": true
      }
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"initialOwner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ExecutionFailed","type":"error"},{"inputs":[],"name":"InvalidOperator","type":"error"},{"inputs":[],"name":"InvalidOwner","type":"error"},{"inputs":[],"name":"InvalidOwnerAddress","type":"error"},{"inputs":[],"name":"NotAnOperator","type":"error"},{"inputs":[],"name":"NotOperator","type":"error"},{"inputs":[],"name":"NotOwner","type":"error"},{"inputs":[],"name":"OperatorAlreadyAdded","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"}],"name":"OperatorAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"operator","type":"address"}],"name":"OperatorRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferStarted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"addOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"},{"internalType":"uint256","name":"nativeValue","type":"uint256"}],"name":"executeContract","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"isOperator","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"operators","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"owner_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pendingOwner","outputs":[{"internalType":"address","name":"owner_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"proposeOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"removeOperator","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

Deployed Bytecode

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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.