BTC: Cumulative Estimated Proof-of-Work Hashes

Bitcoin Cumulative Estimated Proof-of-Work Hashes was 106,035,523,175,785,751,178,206,746,720.08 estimated hashes on 7 Nov 2026 (latest daily value).

Running total of estimated double-SHA256 hashes behind Bitcoin's blocks since the genesis UTC day, based on block difficulty.

Why use it. Show the scale of accumulated proof-of-work implied by difficulty across Bitcoin's history. How to read it. The total grows with each day's estimated work, and the viewport never restarts it. It is a conventional difficulty-based estimate, not measured physical hashes, exact target-based expected attempts or Bitcoin Core chainwork. The first unknown day makes that date and every later value undefined until the source is repaired; sealed no-block days follow the native zero rule. Only complete UTC days are defined, and provisional labels remain.

Calculation. Each day's work is the accepted daily hash rate estimate in EH/s times 86,400 seconds and 10^18 hashes per exahash; that estimate divides the sum of retained floating-point relative block difficulty times 2^32 by 86,400 and 10^18. Add every daily value from 2009-01-03 through the displayed day. Decimal arithmetic at 40 significant digits does not recover precision lost in the difficulty values. Computed from our own validated Bitcoin Core node.