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| 1h | 24h | 7d | 30d | 60d | 90d |
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| 0.15% | 0.81% | 3.25% | 5.42% | 5.29% | 20.00% |
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UMA is a decentralized financial contract platform centered on an Optimistic Oracle, which securely brings off-chain data on-chain. It allows anyone to propose a data claim with a bond; if unchallenged within the challenge period, the data is accepted. If disputed, UMA token holders vote to resolve it. Developers can build prediction markets, insurance, cross-chain bridges, and more, or use its contract templates to create synthetic assets.
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About UMA
UMA is an optimistic oracle protocol that brings real-world data onto blockchains through a game-theoretic verification mechanism. Its core business includes the Optimistic Oracle for data verification, the Across Protocol for cross-chain bridging, and the OVM (Optimistic Verifier Mechanism) for scalable data verification.
Unlike traditional oracles that rely on expensive consensus, UMA assumes data is correct unless challenged during a dispute window, drastically reducing costs and latency. Its key strength lies in handling subjective or complex questions—such as sports outcomes or market predictions—that are difficult for automated systems to verify, while maintaining economic incentives to ensure honest reporting.
UMA addresses the market pain point of expensive, slow, and rigid oracle services. By shifting to an optimistic model, it enables low-cost, fast, and flexible data verification, making it suitable for prediction markets, insurance protocols, and cross-chain applications.
In the past six months (2026-03-01 to 2026-09-01), UMA has focused on expanding its Across Protocol, which saw significant growth in cross-chain transaction volume. The team also upgraded the OVM to support more complex data types and improved dispute resolution efficiency. Additionally, UMA strengthened integrations with major DeFi protocols, particularly in the prediction market sector.
One notable negative event: in 2024, UMA suffered a governance attack where a malicious proposal temporarily allowed an attacker to drain funds from the protocol. The issue was quickly resolved through a community vote, but it highlighted risks in the governance process. No similar incidents have occurred since.
UMA (Universal Market Access) was founded in 2018 by Allison Lu and Hart Lambur, and completed a $4 million seed round in December of that year. In April 2020, the UMA token officially launched, marking the project's entry into the DeFi market. In September 2020, UMA completed another round of financing, followed by a $2.6 million OTC sale in July 2021.
A key milestone was the launch of Across Protocol in 2021, a cross-chain bridge secured by UMA's optimistic oracle. Across has processed over $2 billion in volume and accounts for 34.8% of UMA's total value secured, demonstrating the oracle's real-world utility. In 2023, UMA 2.0 was introduced, featuring enhanced staking mechanisms and simplified dApp integration, improving the oracle's efficiency and security.
In September 2024, UMA's optimistic oracle launched on Blast, expanding its multi-chain capabilities. Throughout its history, UMA has integrated with notable projects like Polymarket and Sherlock, showcasing its versatility across prediction markets and insurance. These developments highlight UMA's evolution from a synthetic asset platform to a foundational oracle infrastructure for Web3, with its optimistic design offering faster, cheaper, and more secure data verification compared to traditional oracle systems.
Positive: In June 2026, UMA DAO proposed cutting token emissions from 0.130 UMA/s to 0.095 UMA/s (-27%) to curb inflation and improve long-term tokenomics. Polymarket's integration of UMA's Optimistic Oracle also boosted adoption.
Negative: In September 2026, Cozy Finance lost ~$160K due to an exploit in UMA's Optimistic Oracle, exposing verification flaws. Global regulatory uncertainty around prediction markets, a 1.17M token whale transfer in July, governance centralization concerns (e.g., the Strategy Bitcoin sale vote dominated by a few whales), and the end of gas rebates for voting-pool delegates in June all weighed on sentiment.
Hart Lambur (Co-Founder): Previously founded Openfolio, worked at Goldman Sachs as a trader. Holds a B.Sc. in Computer Science from Columbia University.
Matt Rice (CTO): Previously a Software Engineer at Google, Tech Lead at UMA. Joined Risk Labs in 2018.
Melissa Quinn (COO): Previously Chief of Staff at Risk Labs, Director of Corporate Strategy at RightMesh. Joined UMA in 2020.