Polymarket US launched five-minute binary markets on October 27, 2026, allowing users to predict whether Bitcoin, Ether, Solana or XRP will end the period above or below their opening prices. Automated settlement relies on Chainlink’s 60-second time-weighted average price, which has served as the settlement oracle since August 14, 2026. The method is designed to reduce manipulation risk by avoiding reliance on a single spot price or a well-timed trade. The app is available in most US states and operates under CFTC oversight through QCX LLC, separately from the international Polymarket.com platform. These contracts are rapid, binary wagers on short-term price direction.
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