The total computational power being applied to a proof-of-work blockchain network, measured in hashes per second - a key indicator of network security and miner confidence.
Hash rate measures the aggregate speed at which all miners on a PoW network are generating hashes in the race to find the next valid block. It is expressed in multiples of hashes per second: exahashes (EH/s) for Bitcoin, which now exceeds 600 EH/s, meaning miners collectively attempt over 600 quintillion random calculations every second.
Hash rate is significant as a network security indicator: a higher hash rate means a 51% attack (gaining enough mining power to rewrite transaction history) becomes more expensive. It also reflects miner economics: rational miners only run hardware when the block reward plus transaction fees exceeds their operational costs (primarily electricity). When BTC prices rise, mining becomes more profitable, attracting new miners and increasing hash rate. When prices fall, marginal miners switch off, reducing hash rate.
For traders, hash rate trends have been used as a contrarian indicator. Hash rate typically peaks after BTC price peaks as miners who expanded capacity in the bull market continue running. Hash rate bottoms can precede price recoveries as the weakest miners capitulate. The Puell Multiple (ratio of daily miner revenue to its 365-day moving average) is a derived metric that identifies miner stress periods associated with macro price lows.
Worked Example
Bitcoin's hash rate reaches a new all-time high of 650 EH/s in January 2025, two months after BTC hit a price high of USD 108,000. This lag is expected: miners ordered hardware during the bull run and deployment takes months. Traders who track the Puell Multiple note that peak hash rate often coincides with elevated miner sell pressure - miners operating newly deployed equipment sell BTC to cover hardware debt. Historically, such conditions have aligned with price distribution zones, providing a bearish on-chain signal to overlay with technical analysis.