Hash Rate
Total computational power securing a Proof-of-Work network — Bitcoin's is the largest computing effort ever assembled.
Hash rate measures how many hash computations a network’s miners perform per second. Bitcoin’s runs in the hundreds of exahashes — hundreds of quintillion attempts every second — making it, by raw compute, the largest coordinated computing project in history.
Hash rate is the security budget made visible: attacking the chain means out-computing it (a 51% attack), so higher hash rate means costlier attacks. It’s also an industrial confidence index — miners add expensive ASICs when they expect profitability, and hash rate hitting new highs during price downturns signals long-horizon conviction from the sector holding the most operational skin in the game.