Woofun AI reports that Stanford University researchers detected manipulation in Polymarket's five-minute Bitcoin betting markets. Analysis of two months of data revealed repeated one-way trading pulses on Binance that briefly moved Bitcoin prices seconds before settlement, benefiting aligned positions. The study estimates the suspected manipulator earned approximately $8.2 million, primarily from retail losses. A Polymarket spokesperson stated the platform uses multiple independent price oracles and plans to transition some markets to longer settlement windows next year.