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Polymarket’s $350 Million Iran Peace Market Hangs on UMA Vote

A dispute over whether a temporary U.S.–Iran agreement meets Polymarket’s “permanent” contract wording hands settlement power to a small group of UMA token holders.

Overview

  • Polymarket’s large market tied to a U.S.–Iran peace deal has roughly $345–$354 million in open volume and remains unresolved because its contracts require an explicit permanent end to hostilities.
  • Both governments announced an interim deal to reopen the Strait of Hormuz for 60 days, but the temporary nature of that arrangement is central to the dispute over whether the contract condition is met.
  • Donald Trump’s public comments that negotiations were “now complete” prompted some traders to push for a quick affirmative settlement, which triggered a formal UMA dispute proposal and counter-arguments.
  • UMA’s optimistic-oracle process gives token holders the final say on contested outcomes, and a Bloomberg analysis cited in coverage shows nine wallets control more than half of voting power, creating conflict-of-interest concerns.
  • On-chain forensics from Bubblemaps and other firms flagged clusters of tightly timed profitable bets and prompted congressional probes, raising the prospect of KYC rules or other regulatory limits on geopolitics markets.