UMA Restricts Resolution Proposers to 37 Whitelisted Addresses on Polymarket

UMA, the oracle provider for the decentralized prediction market platform Polymarket, has introduced a new oracle update designed to restrict the submission of market resolution proposals to a limited set of whitelisted users. This change is part of an ongoing effort to improve the accuracy and reliability of market outcomes, particularly in non-contentious events such as sports results, weather, and cryptocurrency prices. The update was enacted following the approval of the UMIP-189 governance proposal on August 6 [1].

The transition involves moving from the Optimistic Oracle V2 (OOV2) to the Managed Optimistic Oracle V2 (MOOV2) contract. The new system limits the ability to submit resolution proposals to a pre-approved list of experienced proposers, aiming to reduce disputes and improve due diligence. This change is intended to address past issues with premature and inaccurate proposals that led to market delays and financial losses for proposers [1].

Under the new MOOV2 framework, only whitelisted addresses can submit proposals, while non-whitelisted users can still request proposals by tagging approved users. The ability to dispute a proposal remains open to the broader community. UMA’s Risk Labs has already compiled an initial list of 37 whitelisted addresses, including Risk Labs and Polymarket employees, as well as proposers with a strong track record of over 20 proposals at more than 95% accuracy [1].

The update has been met with mixed reactions. While some view it as a necessary step to enhance data integrity and reduce the risk of market manipulation or governance attacks, others argue it could lead to centralization by limiting community participation. Critics suggest that clearer market rules might be a more effective solution than restricting who can propose resolutions [1].

The UMA oracle system plays a critical role in Polymarket’s operations by providing real-world data—such as event outcomes or prices—to resolve bets on the blockchain. Traditionally, any user could submit a resolution, which was then subject to a dispute window. If challenged, UMA’s decentralized voting mechanism would determine the correct outcome. The shift to MOOV2 marks a departure from this open model, favoring a more controlled approach where only experienced users can initiate resolution proposals [1].

The update was implemented on July 1, 2025, and has already been tested on Polygon mainnet with real proposal rewards. UMA and Polymarket have stated that the next step is to begin migrating production requests to the new system. According to PolymarketGuide, an independent knowledge base on Polymarket, the new system is expected to reduce early proposal disputes and improve market efficiency [1].

Analysts suggest that the move reflects a broader trend in decentralized finance (DeFi) toward balancing security with accessibility. While the change is likely to improve market stability and data integrity, it may also reduce the diversity of input sources. This trade-off will need to be closely monitored to ensure that the benefits of decentralization are not undermined [1].

Source:

[1] title1.............................(https://www.coinlive.com/en/news-flash/869510)

[2] title2.............................(https://www.coingecko.com/en/coins/aiapis)

[3] title3.............................(https://www.ainvest.com/news/uma-restricts-resolution-proposals-whitelisted-entities-polymarket-2508/)