Just ten days after a 2.73% difficulty dip, Bitcoin’s network is once again on the verge of a major adjustment. With approximately 81% of the 2,016 blocks in the current epoch already mined, the next retarget is expected on October 29, 2025. If miners maintain their current pace, the difficulty could surge by 6.77% — a move that would secure the bronze medal among this year’s largest increases.
Hashrate and Block Intervals
A week ago, Bitcoin’s computing power peaked at 1,164 exahash per second (EH/s). Although it has since eased to around 1,122 EH/s, the network remains exceptionally robust. Average block intervals have dropped to 9 minutes and 21 seconds, well below the 10-minute target. This sustained speed underpins the projected difficulty hike, though with roughly 390 blocks remaining in the epoch, the final figure could still shift slightly.
2025 Difficulty Adjustment Review
So far in 2025, Bitcoin has undergone 21 difficulty adjustments: 15 increases and 6 decreases, resulting in a net gain of approximately 32.8%. If the current 6.77% projection holds, it will rank as the third-largest adjustment of the year. The current leader is the 7.96% increase on July 12 (block 905184), followed by the 6.81% rise on April 5 (block 891072). The third-place is currently held by October 1’s 5.97% bump (block 917280), meaning the upcoming change could easily surpass it.
Miner Dynamics and Outlook
Miner behavior remains the key variable. If hashrate climbs further and block intervals shrink, the difficulty adjustment could exceed 6.77% and challenge the records set in April and July. Conversely, a slowdown in mining activity would reduce the adjustment magnitude. Daily revenue per petahash (PH/s) has dropped compared to a month ago, but elevated hashrate levels indicate miners are still competing aggressively for block rewards.
FAQ
- What is Bitcoin’s current hashrate? As of Oct. 26, 2025, it stands at around 1,122 EH/s.
- When is the next difficulty adjustment? Expected on October 29, 2025.
- How much could difficulty rise? Preliminary estimates suggest a 6.77% increase.
- How many adjustments have occurred in 2025? 21 in total, including 15 increases and 6 decreases.
Regardless of the final outcome, this adjustment will mark another milestone in Bitcoin’s relentless mining competition. With hashrate records and difficulty peaks being constantly rewritten, the world’s largest blockchain continues to demonstrate its resilience and growth.