WSJ: 20% of Polymarket dispute judges bet on cases they ruled on
A Wall Street Journal investigation found that nearly 20% of disputed outcomes on Polymarket involved judges who had placed bets on the cases they were deciding, raising conflict-of-interest concerns. The findings put scrutiny on Polymarket's dispute resolution system, a critical infrastructure component for settling market outcomes. The report found that 20% of addresses acting as dispute judges held direct stakes in the markets they helped adjudicate. The findings raise questions about the independence of Polymarket's decentralized arbitration system, which resolves betting outcomes when outcomes are disputed.
Polymarket's UMA oracle system is now under direct scrutiny from traders who wagered at scale. Any erosion of confidence in resolution finality threatens the platform's ability to maintain deep liquidity on corporate-event contracts.
Joins a recent Polymarket oracle controversy in which a trader lost $500,000 after a late rules change on a $150 million MicroStrategy market, deepening platform-level scrutiny over how disputed outcomes are adjudicated and whether resolution finality can sustain institutional liquidity.