Winning odds in a Polymarket prediction market tied to Bitcoin moved sharply over the past hour, with the "yes" option in the "64,000" sub-market rising to 54.5% from 38.5%, according to Catcher Predict monitoring. The 16 percentage-point swing in the market for the event "Bitcoin breaks on August 12" points to a rapid repricing of trader expectations, and the source said related breaking news may be influencing the move.