Catenaa, Wednesday, August 13, 2025-Oracle provider UMA (Universal Market Access) announced an update to Polymarket’s oracle system, restricting resolution proposals to whitelisted members.
The change follows approval of UMIP-189 and transitions the platform from Optimistic Oracle V2 (OOV2) to Managed Optimistic Oracle V2 (MOOV2).
MOOV2 limits who can propose market resolutions, aiming to improve due diligence and reduce disputes, especially in straightforward markets like sports and crypto prices.
Only approved proposers, selected for experience and accuracy, will be allowed to submit resolution requests, while others can tag whitelisted users to do so. However, anyone retains the right to dispute proposals.
The update addresses past issues where inexperienced or premature proposals caused market delays and bond losses.
PolymarketGuide noted that OOV2’s open system often led to disputes and slow settlements, whereas MOOV2 centralizes proposal rights to a trusted group of about 37 addresses, including Risk Labs and Polymarket employees and proven proposers.
Critics argue the update risks centralization and reduces community participation. Some say clearer market rules could better resolve disputes than limiting proposer access.
Polymarket and UMA are also collaborating with EigenLayer to explore next-generation oracle solutions aimed at improving reliability and functionality.
