Terahashes Per Second

Terahashes per second, written TH/s, is a measure of computing power for proof-of-work mining, equal to one trillion (10 to the power of 12) hash calculations every second. A hash is one attempt by a miner to find a block by running data through a hash function, so a higher hashrate means more attempts and a greater chance of earning the block reward. TH/s is the standard unit for rating individual bitcoin mining machines, the specialized chips known as ASICs, which by the mid-2020s typically delivered from roughly one hundred to several hundred TH/s each. It sits in a ladder of units that rise by factors of 1,000: megahashes, gigahashes, terahashes, petahashes and exahashes per second. The Bitcoin network's total hashrate is far larger and is usually quoted in exahashes per second.