As July came to a close, the Bitcoins options market saw significant changes. On Deribit, the world’s largest cryptocurrency options exchange, the August-expiring Bitcoin put option (a position that hedges against price declines) with a strike price of $60,000 has become the most popular bet, with a notional open interest value of $1.17 billion.Previously, call options with strike prices of $70,000 and $72,000 had been the most popular, but following the Federal Reserve meeting, the notional value of open interest in these call options dropped sharply.