Sepolia Testnet

Contract

0xe3ee440777e7379c5f8f8eD90410EF11C215B60a

Overview

ETH Balance

0.000000006 ETH

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N/A
Transaction Hash
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Block
From
To
Register Public61264052024-06-17 11:17:1225 days ago1718623032IN
0xe3ee4407...1C215B60a
0 ETH0.0040261550
Unregister61234802024-06-17 1:09:3626 days ago1718586576IN
0xe3ee4407...1C215B60a
0 ETH0.000046281.50009588
Register Public61232312024-06-17 0:17:1226 days ago1718583432IN
0xe3ee4407...1C215B60a
0 ETH0.0040261550
Register Public61232292024-06-17 0:16:4826 days ago1718583408IN
0xe3ee4407...1C215B60a
0 ETH0.0040261550
Register Public61232262024-06-17 0:16:0026 days ago1718583360IN
0xe3ee4407...1C215B60a
0 ETH0.0040261550
Register Public61232152024-06-17 0:13:3626 days ago1718583216IN
0xe3ee4407...1C215B60a
0 ETH0.0040261550
Register Public61232132024-06-17 0:13:0026 days ago1718583180IN
0xe3ee4407...1C215B60a
0 ETH0.01267850
0x6080604061231692024-06-17 0:04:1226 days ago1718582652IN
 Create: NodeRegistry
0 ETH0.000001730.00102658

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Contract Source Code Verified (Exact Match)

Contract Name:
NodeRegistry

Compiler Version
v0.8.25+commit.b61c2a91

Optimization Enabled:
Yes with 200 runs

Other Settings:
istanbul EvmVersion, None license

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 7 : NodeRegistry.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;


import "contracts/access/AccessControl.sol";
import "contracts/utils/ReentrancyGuard.sol";

/*


                    .-'''-.                                                                                                  
                   '   _    \ _______                          .---.                                                         
 __  __   ___    /   /` '.   \\  ___ `'.         __.....__     |   |      __.....__                                     .--. 
|  |/  `.'   `. .   |     \  ' ' |--.\  \    .-''         '.   |   |  .-''         '.                                   |__| 
|   .-.  .-.   '|   '      |  '| |    \  '  /     .-''"'-.  `. |   | /     .-''"'-.  `.                                 .--. 
|  |  |  |  |  |\    \     / / | |     |  '/     /________\   \|   |/     /________\   \ ____     _____            __   |  | 
|  |  |  |  |  | `.   ` ..' /  | |     |  ||                  ||   ||                  |`.   \  .'    /         .:--.'. |  | 
|  |  |  |  |  |    '-...-'`   | |     ' .'\    .-------------'|   |\    .-------------'  `.  `'    .'         / |   \ ||  | 
|  |  |  |  |  |               | |___.' /'  \    '-.____...---.|   | \    '-.____...---.    '.    .'     ,.--. `" __ | ||  | 
|__|  |__|  |__|              /_______.'/    `.             .' |   |  `.             .'     .'     `.   //    \ .'.''| ||__| 
                              \_______|/       `''-...... -'   '---'    `''-...... -'     .'  .'`.   `. \\    // /   | |_    
                                                                                        .'   /    `.   `.`'--' \ \._,\ '/    
                                                                                       '----'       '----'      `--'  `"     


https://modelex.ai

*/



contract NodeRegistry is AccessControl, ReentrancyGuard {

    uint public requiredStakeAmount;
    uint public lockUpPeriod;
    address public owner;
    uint256 public constant NAME_MAX_LENGTH = 32;
    uint256 public constant DN_MAX_LENGTH = 128;
    
    mapping(address => Node) public registry;
    address[] public publicNodes;
    address[] public whitelistedNodes;

    event NodeRegistered(address nodeAddress);
    event StakeWithdrawn(address nodeAddress);

    struct Node {
        string name;
        string dn;
        address nodeAddress;
        uint registeredAtBlock;
        uint pingAtBlock;
        uint stake;
        uint lockUpPeriod;
    }

    constructor () {
        requiredStakeAmount = 1 gwei;
        lockUpPeriod = 1000;
        _setupRoles();
    }
    // may need to addres DEFAULT_ADMIN_ROLE in super class
    bytes32 public constant ADMIN_ROLE = keccak256("ADMIN_ROLE");
    bytes32 public constant NODE_ROLE = keccak256("NODE_ROLE");
    bytes32 public constant WHITELISTED_ROLE = keccak256("WHITELISTED_ROLE");

    function _setupRoles() internal {
        _grantRole(ADMIN_ROLE, msg.sender);
    }

    function baseURI() public pure returns (string memory) {
        return "https://modelex.ai/node";
    }

    function registerPublic(string memory name, string memory dn) public payable {
        require(bytes(name).length <= NAME_MAX_LENGTH, "Name exceeds maximum length");
        require(bytes(dn).length <= NAME_MAX_LENGTH, "Domain name exceeds maximum length");
        require(msg.value >= requiredStakeAmount, "Incorrect stake amount");
        Node memory node = Node (
            name,
            dn,
            msg.sender,
            block.number,
            block.number,
            msg.value,
            lockUpPeriod
        );
        registry[msg.sender] = node;
        publicNodes.push(msg.sender); 
        _grantRole(NODE_ROLE,msg.sender);
        emit NodeRegistered(msg.sender);
    }

    function ping() public onlyRole(NODE_ROLE){
        Node memory node = registry[msg.sender];
        require(node.nodeAddress != address(0), "Node not in registry");
        node.pingAtBlock = block.number;
        registry[msg.sender] = node;
    }

    function registerWhitelisted(string memory name, string memory dn) public payable onlyRole(WHITELISTED_ROLE) {
        require(bytes(name).length <= NAME_MAX_LENGTH, "Name exceeds maximum length");
        require(bytes(dn).length <= NAME_MAX_LENGTH, "Domain name exceeds maximum length");
        Node memory node = Node (
            name,
            dn,
            msg.sender,
            block.number,
            block.number,
            msg.value,
            lockUpPeriod
        );
        registry[msg.sender] = node;
        whitelistedNodes.push(msg.sender);
        _grantRole(NODE_ROLE,msg.sender);     
        emit NodeRegistered(msg.sender);
    }

    function listPublic() public view returns (address[] memory) {
        return publicNodes;
    }

    function listWhitelist() public view returns (address[] memory) {
        return whitelistedNodes;
    }

    function forceUnregister(address nodeAddress) public nonReentrant onlyRole(ADMIN_ROLE) {
        _revokeRole(WHITELISTED_ROLE, msg.sender);
        _revokeRole(NODE_ROLE, msg.sender); 
        _removeNode(nodeAddress, publicNodes);
        _removeNode(nodeAddress, whitelistedNodes);   
    }

    function _withdrawStake() internal {
        require(block.number > registry[msg.sender].registeredAtBlock + lockUpPeriod, "Stake is locked");
        payable(msg.sender).transfer(registry[msg.sender].stake);
    }

    function withdrawStake() public nonReentrant {
        _withdrawStake();
    }

    function unregister() public nonReentrant {
        _withdrawStake();
        _revokeRole(WHITELISTED_ROLE, msg.sender);
        _revokeRole(NODE_ROLE, msg.sender);

        _removeNode(msg.sender, publicNodes);
        _removeNode(msg.sender, whitelistedNodes);

    }

    function lookup(address nodeAddress) public view returns (Node memory node) {
        return registry[nodeAddress];
    }

    // Function to add an node to the whitelist (to be called by the contract owner or designated administrator)
    function addToWhitelist(address nodeAddress) public onlyRole(ADMIN_ROLE) {
        _grantRole(WHITELISTED_ROLE,nodeAddress);   
    }

    // Function to remove an node from the whitelist
    function removeFromWhitelist(address nodeAddress) public onlyRole(ADMIN_ROLE) {
        _revokeRole(WHITELISTED_ROLE, nodeAddress);
    }

    function _removeNode(address nodeAddress, address[] storage nodeArray) internal {
        for (uint i = 0; i < nodeArray.length; i++) {
            if (nodeArray[i] == nodeAddress) {
                nodeArray[i] = nodeArray[nodeArray.length - 1];
                nodeArray.pop();
                break;
            }
        }
        delete registry[nodeAddress];
    }

}

File 2 of 7 : AccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/AccessControl.sol)

pragma solidity ^0.8.20;

import {IAccessControl} from "contracts/access/IAccessControl.sol";
import {Context} from "contracts/utils/Context.sol";
import {ERC165} from "contracts/utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address account => bool) hasRole;
        bytes32 adminRole;
    }

    mapping(bytes32 role => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with an {AccessControlUnauthorizedAccount} error including the required role.
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual returns (bool) {
        return _roles[role].hasRole[account];
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `_msgSender()`
     * is missing `role`. Overriding this function changes the behavior of the {onlyRole} modifier.
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Reverts with an {AccessControlUnauthorizedAccount} error if `account`
     * is missing `role`.
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert AccessControlUnauthorizedAccount(account, role);
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address callerConfirmation) public virtual {
        if (callerConfirmation != _msgSender()) {
            revert AccessControlBadConfirmation();
        }

        _revokeRole(role, callerConfirmation);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Attempts to grant `role` to `account` and returns a boolean indicating if `role` was granted.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual returns (bool) {
        if (!hasRole(role, account)) {
            _roles[role].hasRole[account] = true;
            emit RoleGranted(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Attempts to revoke `role` to `account` and returns a boolean indicating if `role` was revoked.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual returns (bool) {
        if (hasRole(role, account)) {
            _roles[role].hasRole[account] = false;
            emit RoleRevoked(role, account, _msgSender());
            return true;
        } else {
            return false;
        }
    }
}

File 3 of 7 : IAccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/IAccessControl.sol)

pragma solidity ^0.8.20;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev The `account` is missing a role.
     */
    error AccessControlUnauthorizedAccount(address account, bytes32 neededRole);

    /**
     * @dev The caller of a function is not the expected one.
     *
     * NOTE: Don't confuse with {AccessControlUnauthorizedAccount}.
     */
    error AccessControlBadConfirmation();

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `callerConfirmation`.
     */
    function renounceRole(bytes32 role, address callerConfirmation) external;
}

File 4 of 7 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

File 5 of 7 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol)

pragma solidity ^0.8.20;

import {IERC165} from "contracts/utils/introspection/IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 6 of 7 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol)

pragma solidity ^0.8.20;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 7 of 7 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    uint256 private _status;

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    constructor() {
        _status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if (_status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        _status = ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        return _status == ENTERED;
    }
}

Settings
{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "libraries": {
    "NodeRegistry.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AccessControlBadConfirmation","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"bytes32","name":"neededRole","type":"bytes32"}],"name":"AccessControlUnauthorizedAccount","type":"error"},{"inputs":[],"name":"ReentrancyGuardReentrantCall","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nodeAddress","type":"address"}],"name":"NodeRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"nodeAddress","type":"address"}],"name":"StakeWithdrawn","type":"event"},{"inputs":[],"name":"ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DN_MAX_LENGTH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"NAME_MAX_LENGTH","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"NODE_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"WHITELISTED_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nodeAddress","type":"address"}],"name":"addToWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"nodeAddress","type":"address"}],"name":"forceUnregister","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"listPublic","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"listWhitelist","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lockUpPeriod","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nodeAddress","type":"address"}],"name":"lookup","outputs":[{"components":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"dn","type":"string"},{"internalType":"address","name":"nodeAddress","type":"address"},{"internalType":"uint256","name":"registeredAtBlock","type":"uint256"},{"internalType":"uint256","name":"pingAtBlock","type":"uint256"},{"internalType":"uint256","name":"stake","type":"uint256"},{"internalType":"uint256","name":"lockUpPeriod","type":"uint256"}],"internalType":"struct NodeRegistry.Node","name":"node","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ping","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"publicNodes","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"dn","type":"string"}],"name":"registerPublic","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"dn","type":"string"}],"name":"registerWhitelisted","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"registry","outputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"dn","type":"string"},{"internalType":"address","name":"nodeAddress","type":"address"},{"internalType":"uint256","name":"registeredAtBlock","type":"uint256"},{"internalType":"uint256","name":"pingAtBlock","type":"uint256"},{"internalType":"uint256","name":"stake","type":"uint256"},{"internalType":"uint256","name":"lockUpPeriod","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"nodeAddress","type":"address"}],"name":"removeFromWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"callerConfirmation","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"requiredStakeAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unregister","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"whitelistedNodes","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdrawStake","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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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.