Documentation

Harbinger Price Feed

Harbinger is a signed price feed for the Tezos blockchain which provides a trusted price oracle for digital assets.

Harbinger's design was inspired by Compound's Open Price Feed. Separate entities provide signed price updates and post the signed price data on chain. This separation of responsibility leads to a decentralized solution where anyone can post signed prices on-chain, reducing dependencies on a single poster that might be offline.

Harbinger stores "candles" of prices of assets. Specifically, each data point for an asset in a Harbinger price oracle contains the following data: (1) start time, (2) end time, (3) open price, (4) high price, (5) low price, (6) close price, and (7) volume. Typically, the signed price data originates from a market order book on an exchange, where the most recent historical 1-minute candle can be retrieved and signed.

Read more about Harbinger on Github

Credits

Harbinger is written and maintained by Luke Youngblood and Keefer Taylor.