Pyth Network (pyth)

Oracle network providing price feeds from institutional sources. Uses a pull-based model for on-chain price updates.

What it offers

Pull-based oracle: users must call updatePriceFeeds before reading prices
Sub-second latency from institutional market data providers
Actual price = price * 10^expo (e.g. price=12345, expo=-2 means $123.45)
Price feed IDs are bytes32 - see Pyth docs for specific feed IDs per asset
updatePriceFeeds requires sending ETH to pay the update fee (use getUpdateFee to check)
Get price update data from Pyth Hermes API off-chain, then submit on-chain

On Ethereum, Pyth is a namespace: its contracts need no import.

function main() {
  // Ethereum's oracle, `0x4305FB66699C3B2702D4d05CF36551390A4c69C6`.
  require(Pyth.Oracle != 0);
}

Chain	Contract	Address	In a program
Ethereum	oracle	`0x4305FB66699C3B2702D4d05CF36551390A4c69C6`	`Pyth.Oracle`

import PythOracleABI from "./protocols/pyth/PythOracleABI.json"; Speaks for: oracle.

updatePriceFeeds(bytes[] updateData) payable
getPrice(bytes32 id) view returns ((int64 price, uint64 conf, int32 expo, uint256 publishTime) price)
getUpdateFee(bytes[] updateData) view returns (uint256 feeAmount)