The Polymarket platform is implementing a new Managed Optimistic Oracle V2 (MOOV2) contract from UMA, which changes the principle of submitting proposals for market closures. From now on, such proposals can only be submitted by addresses included in a special whitelist. This decision was made on August 6, 2025, through a governance vote by UMA (UMIP-189).
This is reported by Finway
Purpose of the Changes and Features of the New Model
The transition from the previous version OOV2 to MOOV2 aims to reduce the number of unfounded and premature proposals, which previously often led to disputes and delays lasting up to four days. Now, only verified authors will be able to submit proposals, while the option to contest them remains open to all users.
According to information from PolymarketGuide, the new model requires discussion of the idea before submission. Currently, 37 addresses are included in the whitelist, among them employees of Risk Labs and Polymarket, as well as users who have more than 20 confirmed proposals with an accuracy above 95%.
“MOOV2 is designed to reduce the number of unfounded and premature proposals that in the old OOV2 system often caused disputes and delays of up to four days. Now, only verified authors will be able to submit proposals, while contesting them remains allowed for all users.”
Advantages and Criticism of the Update
According to UMA and Polymarket, involving an experienced group of authors should reduce the likelihood of errors, especially in low-conflict markets — for example, in sports, weather, or cryptocurrency prices. At the same time, this innovation has sparked discussions among users who fear centralization. Critics believe that the issue should be addressed by developing clearer rules rather than restricting access to proposal submissions.
The update also aims to enhance protection against manipulation and attacks on the governance system. Currently, the transition to MOOV2 is taking place in test mode: Polymarket has already launched the first requests on the main Polygon network with real rewards for proposal authors.
Additionally, UMA and Polymarket, in collaboration with EigenLayer, are working on creating next-generation oracles that are expected to improve the reliability and functionality of the prediction market. Polymarket also plans to generate profit from USDC reserves by launching its own stablecoin.