What is mining difficulty?
Mining difficulty is the number that sets how hard it is to find a valid Bitcoin block. The network raises or lowers it so that blocks keep arriving about every ten minutes.
How it works
A block is valid only if its hash is below a target. Difficulty expresses how small that target is compared with the easiest one ever allowed. More hashrate on the network finds blocks faster, so the protocol makes the target smaller to compensate.
Why it matters
Difficulty is the miner's competition, written as one number. When it goes up, every machine earns less bitcoin per day.
Live figures: Bitcoin difficulty and the next adjustment.
Related terms
All terms: the Bitcoin mining glossary.
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Three days. One floor. The whole industry.
March 22–24, 2027 · Irving Convention Center · Dallas
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