UMA
UMA's Optimistic Oracle allows contracts to quickly request and receive data information.
What is UMA?
UMA's Optimistic Oracle allows contracts to quickly request and receive data information. The oracle proposes prices and these prices are sent to their Data Verification Mechanism only if disputed. Developers can use their contracts to obtain price information for any length of time without the price needing to be written on-chain. The Optimistic Oracle works in stages: a statement is proposed as true with a bond, and if undisputed during the challenge period, it is accepted. Anyone can dispute a statement and earn a reward for doing so successfully. UMA tokenholders vote on disputes and earn rewards, with stakers earning up to 16% APR. Use cases include prediction markets, insurance, cross-chain communication, and real-world assets.
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App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.
