Mainnet / TestnetLow impactTentative
Bitcoin Difficulty Adjustment at Block 971,712
Bitcoin mining difficulty adjusts at block 971,712, estimated for Saturday, October 17, 2026.
About this event
Bitcoin retargets mining difficulty every 2,016 blocks. The next change comes at block height 971,712, which is estimated to fall on Saturday, October 17, 2026 in UTC. The adjustment before it came at block 969,696 on October 3, 2026.
The October 17, 2026 date comes from recent block times, so it moves as blocks are mined and the exact time is not fixed.
Key facts
Adjustment block height971,712
RuleBitcoin retargets mining difficulty every 2,016 blocks
Time basisestimate from recent block times (moves as blocks are mined)
Blocks left when read1,530
Estimated difficulty change when read3.55%
What to watch
- 1Whether the date moves from October 17, 2026
- 2The block times used to estimate the adjustment date
