UMA Oracle

UMA (Universal Market Access) is the optimistic oracle Polymarket uses to resolve markets on its international platform.

Here's how it works:

When a market is ready to resolve, users can propose an outcome through the UMA Oracle by posting a bond, typically $750. If the proposal goes unchallenged, the market resolves to that outcome and the proposer receives their bond back plus a reward.

If the proposal is disputed, it goes to a vote, where UMA voters determine how the market should resolve. If the proposer loses, they lose their bond.

Watch: UMA's Optimistic Oracle Explained (3 min)