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.
Web3 dapps and developer tools related to UMA
Discover blockchain applications that are frequently used with UMA.
Acurast
Flare Network
Alchemy Prices API
Chainflip
Developer resources from Alchemy
What is the Ethereum Fusaka upgrade? Dev guide to 12 EIPs
A practical breakdown of the Fusaka upgrade, explaining the 12 core EIPs and how they change data availability, cryptography, gas costs, and validator operations across the Ethereum stack.
DeFi without limits: Ink Mainnet launches on the superchain
Today marks a big milestone for the world of DeFi and rollups: Ink mainnet is now available on the Superchain.
How Axal built 9% APY automated savings with smart wallets
Axal: 9% APY DeFi savings via smart wallets. Sub-400ms deposits, 99% lower fees, automated multi-protocol diversification.
UMA alternatives
Explore web3 competitors and apps like UMA.
Chainlink
API3
Switchboard
DIA
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.
