A contentious prediction market contract on Polymarket regarding whether Strategy sold Bitcoin by May 31 officially resolved to 'No' following two rounds of disputes, despite subsequent disclosure confirming the transaction occurred within the specified window. Blockchain data indicates that UMA Optimistic Oracle token holders cast the final decision during a resolution cycle closing at 12:34 am UTC on Thursday. The outcome was driven by an overwhelming 98.6% majority of the 607 participants voting for the 'No' outcome, while only 1.4% supported 'Yes,' according to data compiled by Woofun AI. Polymarket maintained that no onchain data or credible reporting confirmed a sale within the market's strict timeframe, asserting that confirmation achieved outside the deadline does not qualify for a positive resolution.

Strategy executed the sale of 32 BTC between May 26 and May 31 but did not publicly disclose the transaction until a Monday filing, which fell after the market's expiration date. This timing discrepancy has intensified scrutiny regarding Polymarket's token-weighted dispute resolution mechanism, where voting power is directly proportional to UMA token holdings. Multiple market participants expressed outrage, arguing the resolution should have reflected the actual timing of the sale rather than the administrative timing of its confirmation. The financial impact was severe for some, with one trader reporting a loss of $500,000 tied to the event contract, amidst total wagers exceeding $80 million on the outcome.

Galaxy Research highlighted the systemic risk in a Wednesday X post, stating that prediction markets should price actual events rather than how oracles reinterpret rules retroactively. The firm emphasized that resolution integrity must trump any single outcome, while also disclosing its own financial interest in the market by purchasing 'Yes' shares as part of a routine hedging strategy. Data monitored by Woofun AI reveals that the largest voting influence came from the wallet borntoolate.eth, holding 3.11 million UMA tokens, followed by Kevin Chan's wallet '0xd2a' with 1.53 million tokens. These large holders stand to gain significantly from dispute resolutions, with borntoolate.eth netting over $299,000 and Kevin Chan's wallet securing over $370,000 from voting on various event contract disputes.

Critics have pointed to this incident as evidence of broader vulnerabilities within UMA's token-weighted voting model, citing previous controversial resolutions. A notable example involved a contract on whether Ukraine would agree to US President Donald Trump's mineral deal before April 2025, which resolved as 'Yes' in March despite the agreement being signed on April 30. Trader fr1ko.eth characterized such outcomes as a 'governance attack and whale manipulation,' noting that Polymarket took no action to address the manipulation. Woofun AI notes that these recurring disputes suggest a fundamental misalignment between on-chain reality and oracle-based resolution logic.

The controversy unfolds against a backdrop of increasing regulatory attention in the United States. Just a day prior to the resolution, nine Democratic lawmakers in the US House of Representatives urged the Federal Trade Commission to investigate how prediction markets advertise to customers and present themselves to regulators. This legislative pressure coincides with growing internal friction regarding the fairness and accuracy of decentralized oracle systems. As the industry grapples with these governance challenges, the incident underscores the critical need for robust verification mechanisms that can distinguish between transaction execution and public disclosure timelines.