Glossary · deep dive

Hashrate

The total number of hash guesses per second that miners perform; a measure of the computing power securing Bitcoin.

Hashrate counts how many hash attempts the whole network makes per second. Miners search for a block hash below a target; more guesses per second means more chances to win.

Scale (mempool.space, 23 Oct 2026)

About 1,070 EH/s, i.e. 1.07 × 1021 hashes per second. Hashrate is estimated from how quickly blocks are found, so short-term figures are noisy.

Why it matters

To rewrite recent blocks an attacker would need to outpace this hashrate. Higher hashrate means more energy an attacker must spend.