Augur is a decentralized protocol for prediction markets and oracle resolution, originally launched on the Ethereum network. Prediction markets allow users to trade on the outcome of future events, while oracles bring real-world results onchain so markets can settle correctly. Augur combines these by using economic incentives to determine outcomes without centralized authorities. Participants stake value on outcomes, and incorrect positions lose funds while correct ones are rewarded. Following a 2025 revival led by the Lituus Foundation, development now spans two tracks: a new prediction market system and Augur Lituus, a generalized oracle designed as infrastructure for other applications.