The Bitcoin network's mining difficulty dropped by as much as 27% within a single adjustment period during China's 2021 crypto mining ban. Update (2-7-2026) This article has been updated to provide the latest projections for the next Bitcoin mining difficulty adjustment The Bitcoin network mining difficulty, a metric tracking the relative challenge of adding new blocks to the Bitcoin (BTC) ledger, fell by about 11.16% in the last 24 hours, the worst drop in a single adjustment period since China’s 2021 ban on crypto mining. Bitcoin mining difficulty is at 125.86 T and took effect at block 935,429, data from CoinWarz shows. The average block time is about 9.47 minutes, slightly under the 10-minute target. Read more