BTC: Hashprice Volatility (30-Day)
Shown as its 2019–2022 sample; the latest readings and full history are included with Plus.
How much hashprice, the daily mining revenue of one PH/s, has swung over the last 30 days, as annualised volatility.
Why use it. Miners have fixed costs and need steady revenue: volatile hashprice raises the risk of running at a loss and makes hedging hash rate more valuable. How to read it. Higher means bigger day-to-day swings in revenue. It rises with sharp BTC price moves, fee spikes and difficulty jumps.
Calculation. The sample standard deviation of the 30 daily changes of ln(hashprice) ending with the day, × √365 × 100. Daily hashprice as on the Hashprice chart: the day's claimed rewards ÷ its work, per PH/s per day, at the BTC/USD close at the next 00:00 UTC; a day needs the 31 days' hashprices. Computed by CryptoKeyhole from its own Bitcoin node: each block's claimed coinbase value (subsidy plus fees) and difficulty. Periods are UTC hours or days by block header time; a period without a block has no value and the open period is partial. BTC/USD prices are the site's admitted boundary prices: daily closes from The Bitcoin Time Machine (CC BY 4.0) until 2 October 2026, then quotes recorded from Alternative.me at each boundary (within 15 minutes, never carried forward). Hourly values start on 3 October 2026, when hourly quotes begin.