Contract 0x18afc38b25229b797e2af47b5056a5f98249ef12

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0x4038685482d7636d3d9b32a195cc109674dd471a82b58d8f314fd8704c9d4be4Transmit796667922022-12-01 10:17:4437 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x090dc0fa2a8de2d9f90dfd03ab1023e63f5a25b126cf4edfd3101f9a2e7676f2Transmit796662832022-12-01 10:07:3347 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x35ea9686e9f0c5bab7e8b20e97ea0481d9905734b0719fc0317bddcc683ca697Transmit796657912022-12-01 9:57:2357 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x168214386c6297f9767d05edb6d8e6d691c0612108f70fbd6c5d308bef925454Transmit796652952022-12-01 9:47:151 hr 7 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xf47e25ffbb8a5cabcc55103c4db3ec7ed7342efd91aff420d5611dfe7a13071dTransmit796647832022-12-01 9:37:051 hr 18 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x3793cf6ffd8668d957e04a7ab4c22ab301533cc573e1d940104783554b326d73Transmit796642602022-12-01 9:26:561 hr 28 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x1d56e43032667d4d6a133c4509b30309bb558c463d6348fa3aa84d1244ab4577Transmit796637602022-12-01 9:16:461 hr 38 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x60030354afb5ff097d659c4881e815e204324867f5bc7a6c377bbe5747fa91e2Transmit796632952022-12-01 9:06:361 hr 48 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xc5d83851c20dcbee467c18d2a1bc58c2050d79eba85b533e348d77cfa73ea5e6Transmit796627732022-12-01 8:56:261 hr 58 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x94b58626fd94eec3e8a1dc6b39ba48232ab4b33aa550e05e7b8f4ab460b13334Transmit796622632022-12-01 8:46:162 hrs 8 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x3671bfbc791df6bb715d25b884a1795eca61799e5b7d702a8a49e9daf815b5a4Transmit796617242022-12-01 8:36:052 hrs 19 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xfe4761e5ee8c61a701781144da654f8d310757451637b1a9521abcaf3a1db930Transmit796612242022-12-01 8:25:542 hrs 29 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x03ef512743ebb188557f9347a7c55a16a84c20d03666915e808f1fbd5e4dae46Transmit796606852022-12-01 8:15:452 hrs 39 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xff96d782e66878ac92696af17729ff6b1cdbe04d4f6b2b402da7c6a96e9e8375Transmit796601762022-12-01 8:05:362 hrs 49 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xb30b77119b0c05a2e1f3693ef7a974a432dd1630060d240852ce36df55ab5022Transmit796596542022-12-01 7:55:282 hrs 59 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xf1e0558d760ea3d19b4c1c4b813627485507a190520d0fcef29b851224aa33abTransmit796596472022-12-01 7:55:202 hrs 59 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x2e37e01efd24a6ce6fd7f778282ea29651f3677e51acbe804c669039ee6d4fa6Transmit796591102022-12-01 7:45:103 hrs 10 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xbf67a396210d1cc9a04735b75a9b989e9761ac49c1703505782890db2e50a65dTransmit796585912022-12-01 7:34:593 hrs 20 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x9b8ea10eceaabffceb19c1313d6078413e7811eb31d11054dfa4683671eab892Transmit796580722022-12-01 7:24:513 hrs 30 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0xa155bf408a25707fb122810701d13231ddd3ce90690203aed41a08e2e7d82cf4Transmit796575532022-12-01 7:14:413 hrs 40 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
0x6fa83bc686412d4f90939395a8d957c86a6c1a46d909d847034f6f0555ac0d17Transmit796572232022-12-01 7:08:333 hrs 46 mins ago0x053c335593fd25803acc88a63b93747a33be616d IN  0x18afc38b25229b797e2af47b5056a5f98249ef120 ETH0
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Similar Match Source Code
Note: This contract matches the deployed ByteCode of the Source Code for Contract 0xA8Ac2Fa1D239c7d96046967ED21503D1F1fB2354

Contract Name:
FluxPriceFeed

Compiler Version
v0.8.10+commit.fc410830

Optimization Enabled:
Yes with 800 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 10 : FluxPriceFeed.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "./interface/CLV2V3Interface.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";

/**
 * @title Flux first-party price feed oracle
 * @author fluxprotocol.org
 * @notice Simple data posting on chain of a scalar value, compatible with Chainlink V2 and V3 aggregator interface
 */
contract FluxPriceFeed is AccessControl, CLV2V3Interface {
    bytes32 public constant VALIDATOR_ROLE = keccak256("VALIDATOR_ROLE");
    uint32 public latestAggregatorRoundId;

    // Transmission records the answer from the transmit transaction at
    // time timestamp
    struct Transmission {
        int192 answer; // 192 bits ought to be enough for anyone
        uint64 timestamp;
    }
    mapping(uint32 => Transmission) /* aggregator round ID */
        internal transmissions;

    /**
     * @param _validator the initial validator that can post data to this contract
     * @param _decimals answers are stored in fixed-point format, with this many digits of precision
     * @param __description short human-readable description of observable this contract's answers pertain to
     */
    constructor(
        address _validator,
        uint8 _decimals,
        string memory __description
    ) {
        _setupRole(VALIDATOR_ROLE, _validator);
        decimals = _decimals;
        _description = __description;
    }

    /*
     * Versioning
     */
    function typeAndVersion() external pure virtual returns (string memory) {
        return "FluxPriceFeed 1.1.0";
    }

    /*
     * Transmission logic
     */

    /**
     * @notice indicates that a new report was transmitted
     * @param aggregatorRoundId the round to which this report was assigned
     * @param answer value posted by validator
     * @param transmitter address from which the report was transmitted
     */
    event NewTransmission(uint32 indexed aggregatorRoundId, int192 answer, address transmitter);

    /**
     * @notice details about the most recent report
     * @return _latestAnswer value from latest report
     * @return _latestTimestamp when the latest report was transmitted
     */
    function latestTransmissionDetails() external view returns (int192 _latestAnswer, uint64 _latestTimestamp) {
        require(msg.sender == tx.origin, "Only callable by EOA");
        return (transmissions[latestAggregatorRoundId].answer, transmissions[latestAggregatorRoundId].timestamp);
    }

    /**
     * @notice transmit is called to post a new report to the contract
     * @param _answer latest answer
     */
    function transmit(int192 _answer) external {
        require(hasRole(VALIDATOR_ROLE, msg.sender), "Caller is not a validator");

        // Check the report contents, and record the result
        latestAggregatorRoundId++;
        transmissions[latestAggregatorRoundId] = Transmission(_answer, uint64(block.timestamp));

        emit NewTransmission(latestAggregatorRoundId, _answer, msg.sender);
    }

    /*
     * v2 Aggregator interface
     */

    /**
     * @notice answer from the most recent report
     */
    function latestAnswer() public view virtual override returns (int256) {
        return transmissions[latestAggregatorRoundId].answer;
    }

    /**
     * @notice timestamp of block in which last report was transmitted
     */
    function latestTimestamp() public view virtual override returns (uint256) {
        return transmissions[latestAggregatorRoundId].timestamp;
    }

    /**
     * @notice Aggregator round in which last report was transmitted
     */
    function latestRound() public view virtual override returns (uint256) {
        return latestAggregatorRoundId;
    }

    /**
     * @notice answer of report from given aggregator round
     * @param _roundId the aggregator round of the target report
     */
    function getAnswer(uint256 _roundId) public view virtual override returns (int256) {
        if (_roundId > 0xFFFFFFFF) {
            return 0;
        }
        return transmissions[uint32(_roundId)].answer;
    }

    /**
     * @notice timestamp of block in which report from given aggregator round was transmitted
     * @param _roundId aggregator round of target report
     */
    function getTimestamp(uint256 _roundId) public view virtual override returns (uint256) {
        if (_roundId > 0xFFFFFFFF) {
            return 0;
        }
        return transmissions[uint32(_roundId)].timestamp;
    }

    /*
     * v3 Aggregator interface
     */

    string private constant V3_NO_DATA_ERROR = "No data present";

    /**
     * @return answers are stored in fixed-point format, with this many digits of precision
     */
    uint8 public immutable override decimals;

    /**
     * @notice aggregator contract version
     */
    uint256 public constant override version = 1;

    string internal _description;

    /**
     * @notice human-readable description of observable this contract is reporting on
     */
    function description() public view virtual override returns (string memory) {
        return _description;
    }

    /**
     * @notice details for the given aggregator round
     * @param _roundId target aggregator round. Must fit in uint32
     * @return roundId _roundId
     * @return answer answer of report from given _roundId
     * @return startedAt timestamp of block in which report from given _roundId was transmitted
     * @return updatedAt timestamp of block in which report from given _roundId was transmitted
     * @return answeredInRound _roundId
     */
    function getRoundData(uint80 _roundId)
        public
        view
        virtual
        override
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        )
    {
        require(_roundId <= 0xFFFFFFFF, V3_NO_DATA_ERROR);
        Transmission memory transmission = transmissions[uint32(_roundId)];
        return (_roundId, transmission.answer, transmission.timestamp, transmission.timestamp, _roundId);
    }

    /**
     * @notice aggregator details for the most recently transmitted report
     * @return roundId aggregator round of latest report
     * @return answer answer of latest report
     * @return startedAt timestamp of block containing latest report
     * @return updatedAt timestamp of block containing latest report
     * @return answeredInRound aggregator round of latest report
     */
    function latestRoundData()
        public
        view
        virtual
        override
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        )
    {
        roundId = latestAggregatorRoundId;

        // Skipped for compatability with existing FluxAggregator in which latestRoundData never reverts.
        // require(roundId != 0, V3_NO_DATA_ERROR);

        Transmission memory transmission = transmissions[uint32(roundId)];
        return (roundId, transmission.answer, transmission.timestamp, transmission.timestamp, roundId);
    }
}

File 2 of 10 : CLV2V3Interface.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

import "./CLInterface.sol";
import "./CLV3Interface.sol";

interface CLV2V3Interface is CLInterface, CLV3Interface {}

File 3 of 10 : AccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../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:
 *
 * ```
 * 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}:
 *
 * ```
 * 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.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @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 override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @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 override 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.
     */
    function grantRole(bytes32 role, address account) public virtual override 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.
     */
    function revokeRole(bytes32 role, address account) public virtual override 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 granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @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);
    }

    function _grantRole(bytes32 role, address account) private {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    function _revokeRole(bytes32 role, address account) private {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

File 4 of 10 : CLInterface.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

interface CLInterface {
    function latestAnswer() external view returns (int256);

    function latestTimestamp() external view returns (uint256);

    function latestRound() external view returns (uint256);

    function getAnswer(uint256 roundId) external view returns (int256);

    function getTimestamp(uint256 roundId) external view returns (uint256);

    event AnswerUpdated(int256 indexed current, uint256 indexed roundId, uint256 updatedAt);
    event NewRound(uint256 indexed roundId, address indexed startedBy, uint256 startedAt);
}

File 5 of 10 : CLV3Interface.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;

interface CLV3Interface {
    function decimals() external view returns (uint8);

    function description() external view returns (string memory);

    function version() external view returns (uint256);

    // getRoundData and latestRoundData should both raise "No data present"
    // if they do not have data to report, instead of returning unset values
    // which could be misinterpreted as actual reported values.
    function getRoundData(uint80 _roundId)
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );

    function latestRoundData()
        external
        view
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        );
}

File 6 of 10 : IAccessControl.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @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.
     *
     * _Available since v3.1._
     */
    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 `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 7 of 10 : Context.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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;
    }
}

File 8 of 10 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @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);
    }
}

File 9 of 10 : ERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./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);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 10 of 10 : IERC165.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @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);
}

Settings
{
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"address","name":"_validator","type":"address"},{"internalType":"uint8","name":"_decimals","type":"uint8"},{"internalType":"string","name":"__description","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"int256","name":"current","type":"int256"},{"indexed":true,"internalType":"uint256","name":"roundId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"updatedAt","type":"uint256"}],"name":"AnswerUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"roundId","type":"uint256"},{"indexed":true,"internalType":"address","name":"startedBy","type":"address"},{"indexed":false,"internalType":"uint256","name":"startedAt","type":"uint256"}],"name":"NewRound","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint32","name":"aggregatorRoundId","type":"uint32"},{"indexed":false,"internalType":"int192","name":"answer","type":"int192"},{"indexed":false,"internalType":"address","name":"transmitter","type":"address"}],"name":"NewTransmission","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"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VALIDATOR_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"description","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_roundId","type":"uint256"}],"name":"getAnswer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint80","name":"_roundId","type":"uint80"}],"name":"getRoundData","outputs":[{"internalType":"uint80","name":"roundId","type":"uint80"},{"internalType":"int256","name":"answer","type":"int256"},{"internalType":"uint256","name":"startedAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint80","name":"answeredInRound","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_roundId","type":"uint256"}],"name":"getTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":"latestAggregatorRoundId","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestAnswer","outputs":[{"internalType":"int256","name":"","type":"int256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRound","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestRoundData","outputs":[{"internalType":"uint80","name":"roundId","type":"uint80"},{"internalType":"int256","name":"answer","type":"int256"},{"internalType":"uint256","name":"startedAt","type":"uint256"},{"internalType":"uint256","name":"updatedAt","type":"uint256"},{"internalType":"uint80","name":"answeredInRound","type":"uint80"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"latestTransmissionDetails","outputs":[{"internalType":"int192","name":"_latestAnswer","type":"int192"},{"internalType":"uint64","name":"_latestTimestamp","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","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":[{"internalType":"int192","name":"_answer","type":"int192"}],"name":"transmit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"typeAndVersion","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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