Hash Rate

Hash rate is measured in hashes per second, scaled by SI prefixes: TH/s, PH/s, EH/s, ZH/s. As of 2025 the Bitcoin network sits in the 600–700 EH/s range — six hundred quintillion guesses per second, every second, around the clock.

Network hash rate is a proxy for security. More hash rate means a 51%-attack requires more capital expenditure on ASICs and more electricity. The difficulty adjustment ensures blocks still arrive every ~10 minutes regardless of hash rate, so growth in mining capacity translates directly into security, not faster blocks.

Individual miner hash rate, divided by network hash rate, gives the miner's share of expected block rewards. A 1 EH/s farm against a 600 EH/s network expects to mine roughly 1/600 of the daily issuance.