BTC options expiring 26MAR27, 200 days out, with the forward at $81,416. Open interest is $2B in calls and $931M in puts, put/call 0.57, and max pain is $70,000. At-the-money implied volatility is 40.1%. Where a strike is listed on both venues the cheaper ask and richer bid are visible side by side; the arb scanner flags any gap that exceeds fees. Strikes shown are within 60% of the forward. All BTC expiries.