Witnet example: read Bitcoin price from Witnet price feed on Ethereum Rinkeby

witnet-bitcoin-price-feed-example.sol

// SPDX-License-Identifier: MIT
pragma solidity >=0.5.0 <0.9.0;

import "witnet-solidity-bridge/contracts/interfaces/IWitnetPriceFeed.sol";

contract MyContract {

    function readBitcoinPriceFromWitnetPriceFeed() external view returns(int256) {
        // The address below shall be different for each price feed and blockchain
        IWitnetPriceFeed IWitnetPriceFeed = IERC2362(address("0xccAe308C9b91a3e3De8E0Dd4136Ce0Bb608e6ea4"));
        int256 value = priceFeed.lastPrice();

        return value;
    }

}