Pyth (Oracle)

Overview

is one of the largest first-party Oracle network, delivering real-time data across . The network comprises some of the world’s . These publish proprietary data on-chain for aggregation and distribution to smart contract applications.

Using Pyth Network on Cronos zkEVM

The Pyth introduces an innovative low-latency , where users can pull price updates onchain when needed, enabling everyone in the onchain environment to access that data point most efficiently. Pyth network updates the prices every 400ms.

Developers Cronos zkEVM have permissionless access to any of for equities, ETFs, commodities, foreign exchange pairs, and cryptocurrencies.

Example

Here is a working example of a contract that fetches the latest price of ETH/USD on the Cronos zkEVM. You have to pass for Cronos zkEVM mainnet/testnet and the desired to fetch the latest price.

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import "@pythnetwork/pyth-sdk-solidity/IPyth.sol";
import "@pythnetwork/pyth-sdk-solidity/PythStructs.sol";

contract MyFirstPythContract {
    IPyth pyth;

    constructor(address _pyth) {
        pyth = IPyth(_pyth);
    }

    function fetchPrice(
        bytes[] calldata updateData,
        bytes32 priceFeed
    ) public payable returns (int64) {
		    // Fetch the priceUpdate from hermes.
        uint updateFee = pyth.getUpdateFee(updateData);
        pyth.updatePriceFeeds{value: updateFee}(updateData);

        // Fetch the latest price
        PythStructs.Price memory price = pyth.getPrice(priceFeed);
        return price.price;
    }
}

Pyth on Cronos zkEVM

Deployment status

Using Pyth as a PUSH Oracle

Developers and community

Check out the following links to get started with Pyth.

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Last updated 5 months ago