Polymarket Adds Five-Minute Crypto Contracts to US App

The shift toward five-minute settlement turns Polymarket's crypto offering into a much higher-frequency product, which matters most for active traders and for the platform's fee economics rather than for long-horizon users. Using CF Benchmarks prices gives these short-dated contracts an institutional-grade reference point, a meaningful choice for a venue whose crypto markets have historically leaned on looser resolution sources. The tie-goes-Up rule and separately charged taker fees are the details worth watching: whether they hold up under fast-moving conditions, and whether this cadence draws volume away from longer-dated markets, is the open question.