A prediction market is a marketplace where participants trade contracts tied to the outcome of a future event. The contract price reflects the crowd’s aggregated belief about how likely an outcome is, which is why prediction markets are often described as “probability markets.”
How prediction markets work
In a typical setup, a market is created for a clear question with defined outcomes, such as “Will a particular candidate win an election?” or “Will a sports team win a match?” Traders buy and sell outcome contracts, and the current trading price becomes a real time signal of expected likelihood. For example, if a “Yes” share trades around 0.70 in a market priced from 0 to 1, many traders interpret that as roughly a 70 percent implied probability, though the exact interpretation depends on the platform’s payoff rules and fees.
Markets usually settle after an external result is known. Settlement requires an agreed data source, often called an oracle, to confirm what happened. Because these markets are typically zero-sum, profits for correct predictions come from those who took the other side of the trade.
Prediction markets in crypto
Crypto prediction markets use blockchain and smart contracts to manage trading, custody, and settlement. Instead of relying solely on a central operator, decentralized platforms can escrow funds on-chain and automatically pay out based on oracle reported outcomes. This can improve transparency and composability, since market positions can sometimes be integrated with wallets, DeFi protocols, or other on-chain tools.
Why it matters
Prediction markets matter in the crypto ecosystem because they translate dispersed information into a single, trackable price signal. They can support hedging, forecasting, and research, while also highlighting the importance of good market design and reliable oracles for fair settlement.