```\ncontract StableOracleWBTC is IStableOracle {\n    AggregatorV3Interface priceFeed;\n\n    constructor() {\n        priceFeed = AggregatorV3Interface(\n            0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419\n\n        );\n    }\n\n    function getPriceUSD() external view override returns (uint256) {\n        (, int256 price, , , ) = priceFeed.latestRoundData();\n        // chainlink price data is 8 decimals for WBTC/USD\n        return uint256(price) * 1e10;\n    }\n}\n```\n