Bitcoin's BTC$64,997.61 options market on the leading exchange, Deribit, is heavily concentrated around two specific price levels, and the positioning tells a clear bullish story. The $70,000 and $72,000 options have together accumulated a notional open interest of nearly $5 billion, representing roughly 18% of the platform's total BTC options open interest of $28 billion. This makes them the two most popular contracts on the exchange, with one contract representing one BTC.