Hashrate
Hashrate is the total computing power being used to perform hashing, most often to mine and secure proof-of-work blockchains like Bitcoin.
Hashrate measures how many hash calculations a computer, mining pool, or entire proof-of-work network can perform per second. In Bitcoin, miners repeatedly hash block data with different inputs, trying to find a result that meets the network’s difficulty target. Hashrate is usually expressed in units like hashes per second, terahashes per second, or exahashes per second, because modern mining involves enormous numbers of guesses.
Hashrate matters because it is a key signal of mining power and network security. A higher network hashrate generally means it would take more computing power and energy for an attacker to reorganize blocks or attempt a 51% attack. For an individual miner, hashrate helps estimate the chance of earning mining rewards, though profitability also depends on electricity costs, hardware efficiency, fees, and Bitcoin’s mining difficulty. A useful comparison is a lottery: each hash is like one ticket, and more hashrate means more tickets entered, but no single ticket is guaranteed to win.
Other terms in Bitcoin
ASIC
A specialized computer chip built to do one task very efficiently, commonly used in Bitcoin mining to perform hashing calculations.
BTC
The ticker symbol for bitcoin, the native currency of the Bitcoin network.
Bitcoin
A decentralized digital currency and payment network that lets people send value without relying on a bank or central authority.
Block Height
A block height is the number that shows a block’s position in a blockchain, counted from the first block.