- Investigation The Wall Street Journal reported that participants in the controversial markets polymarket perform the role of those who resolve them.
- Thus, the dispute resolution system contains a conflict of interest.
Subscriptions polymarket has once again found itself at the center of a scandal involving controversial market situations. A Wall Street Journal analysis of blockchain data showed, that anonymous token holders making decisions on controversial bets are often the people who made them.
Dispute resolution polymarket outsources to the decentralized oracle protocol UMA, run by token holders. The Wall Street Journal found that at least 60% of active UMA voters are linked to accounts polymarketIn approximately one in five disputes, one voter had a direct financial interest in the outcome of the dispute.
Voting power is also concentrated: more than 50% is held by the 10 largest wallets, which undermines the system’s “decentralized” status.
polymarket began collaborating with UMA in 2022, thereby confirming that the platform operates as a decentralized offshore system outside the jurisdiction of the CFTC. A competing platform Kalshi handles disputes internally and is a CFTC-registered exchange.
As platforms evolve, the number of disputes grows. In 2026, arbitration proceedings were initiated in 1150 markets. polymarket, which exceeds the annual figure for 2025.
Every dispute requires expert assessment of controversial real-world events, often by anonymous token holders who may hold positions in the same markets.
Some users polymarket and cryptocurrency market participants criticized UMA’s governance structure, claiming, that it gives large token holders incentives to influence outcomes in markets where they hold positions.
Dispute resolution directly impacts settlement outcomes. It determines whether a contract will pay out 0 or 1. As prediction markets approach the scale where institutional capital becomes a significant factor, the question of who decides on outcomes and by what rules becomes especially important.
Founder polymarket Shane Coplan described the current process as “chaotic” and pointed to improvements to come.
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