ArbiterOperator Contract¶

// Multi-word response fulfillment
function fulfillOracleRequestV(
    bytes32 requestId,
    uint256 payment,
    address callbackAddress,
    bytes4 callbackFunctionId,
    uint256 expiration,
    bytes calldata data
) external returns (bool success)

// Add a ReputationKeeper to the allowlist
function addReputationKeeper(address rkAddr) external onlyOwner

// Remove a ReputationKeeper from the allowlist
function removeReputationKeeper(address rkAddr) external onlyOwner

// Check if address is a registered ReputationKeeper
function isReputationKeeper(address rkAddr) external view returns (bool)

// Check if the allowlist is empty (gate disabled)
function isReputationKeeperListEmpty() external view returns (bool)

// ERC-165 interface detection
function supportsInterface(bytes4 interfaceId) 
    external view returns (bool)

// Reputation Keeper management
event ReputationKeeperAdded(address indexed rk);
event ReputationKeeperRemoved(address indexed rk);

// Callback execution tracing
event OracleCallbackAttempt(
    bytes32 indexed requestId,
    address callback,
    bytes4 selector,
    uint256 gasBefore
);

event OracleCallbackResult(
    bytes32 indexed requestId,
    bool success,
    bytes returnData,
    uint256 gasAfter
);

// Inherited from standard Chainlink operator
event OracleRequest(/* ... */);
event OracleResponse(bytes32 indexed requestId);

pragma solidity ^0.8.19;

import "./ArbiterOperator.sol";

contract OracleDeployment {
    ArbiterOperator public operator;
    address public owner;

    constructor(address linkToken) {
        operator = new ArbiterOperator(linkToken);
        owner = msg.sender;
    }

    function setupReputationKeepers(address[] memory keepers) external {
        require(msg.sender == owner, "Only owner");

        for (uint256 i = 0; i < keepers.length; i++) {
            operator.addReputationKeeper(keepers[i]);
        }
    }

    function getOperatorInfo() external view returns (
        address operatorAddress,
        bool hasReputationKeepers,
        bool isArbiterOperator
    ) {
        return (
            address(operator),
            !operator.isReputationKeeperListEmpty(),
            operator.supportsInterface(type(IArbiterOperator).interfaceId)
        );
    }
}

pragma solidity ^0.8.19;

contract OracleRegistration {
    ArbiterOperator public operator;
    ReputationKeeper public reputationKeeper;

    function registerWithSystem(
        bytes32 jobId,
        uint256 fee,
        uint64[] memory classes
    ) external {
        // First, register operator with reputation system
        reputationKeeper.registerOracle(
            address(operator),
            jobId,
            fee,
            classes
        );

        // Ensure operator recognizes the reputation keeper
        require(
            operator.isReputationKeeper(address(reputationKeeper)) ||
            operator.isReputationKeeperListEmpty(),
            "Operator doesn't recognize ReputationKeeper"
        );
    }

    function checkCompatibility() external view returns (bool) {
        // Verify the operator is compatible with Verdikta system
        return operator.supportsInterface(type(IArbiterOperator).interfaceId);
    }
}

pragma solidity ^0.8.19;

import "@chainlink/contracts/src/v0.8/ChainlinkClient.sol";

contract VerdiktaClient is ChainlinkClient {
    using Chainlink for Chainlink.Request;

    ArbiterOperator public arbiterOperator;
    bytes32 public jobId;
    uint256 public fee;

    constructor(
        address _operator,
        address _link,
        bytes32 _jobId,
        uint256 _fee
    ) {
        _setChainlinkToken(_link);
        arbiterOperator = ArbiterOperator(_operator);
        jobId = _jobId;
        fee = _fee;
    }

    function requestEvaluation(string memory cid) external returns (bytes32) {
        // Verify this contract is approved
        require(
            arbiterOperator.isReputationKeeperListEmpty() ||
            _isApprovedByReputationKeepers(),
            "Contract not approved for oracle requests"
        );

        Chainlink.Request memory req = _buildOperatorRequest(
            jobId,
            this.fulfill.selector
        );
        req._add("cid", cid);

        return _sendOperatorRequestTo(address(arbiterOperator), req, fee);
    }

    function fulfill(
        bytes32 requestId,
        uint256[] memory likelihoods,
        string memory justificationCID
    ) external recordChainlinkFulfillment(requestId) {
        // Handle the multi-word response
        // Process likelihoods array and justification
    }

    function _isApprovedByReputationKeepers() internal view returns (bool) {
        // Implementation would check with known ReputationKeeper contracts
        // This is simplified for the example
        return true;
    }
}

interface IArbiterOperator is IERC165 {
    // Multi-word fulfillment
    function fulfillOracleRequestV(
        bytes32 requestId,
        uint256 payment,
        address callbackAddress,
        bytes4 callbackFunctionId,
        uint256 expiration,
        bytes calldata data
    ) external returns (bool success);

    // Allowlist queries
    function isReputationKeeper(address rkAddr) external view returns (bool);
    function isReputationKeeperListEmpty() external view returns (bool);
}

// Check operator configuration
function diagnoseOperator(address operatorAddr) external view returns (
    bool isArbiterOperator,
    bool hasReputationKeepers,
    address[] memory registeredKeepers
) {
    ArbiterOperator op = ArbiterOperator(operatorAddr);

    isArbiterOperator = op.supportsInterface(type(IArbiterOperator).interfaceId);
    hasReputationKeepers = !op.isReputationKeeperListEmpty();

    // Note: registeredKeepers would need additional enumeration logic
    // This is simplified for the example
}