Bitcoin Difficulty Slides to September 2025 Levels as Miner Margins Stay Squeezed

Bitcoin’s mining difficulty eased on Thursday, sliding 3.28% from 146.47 trillion to 141.67 trillion—a level not seen since September 2025, and a welcome breather after months of grind. The adjustment should favor bitcoin miners, especially as revenue per petahash (PH/s) has slipped 5.45% over the past week, making this recalibration feel less like charity and more like overdue arithmetic.

Bitcoin’s Self-Correction Kicks In as Mining Difficulty Falls Again in 2026

At block height 933408, Bitcoin’s mining difficulty setting slipped by 3.28%, and for the next two weeks—or precisely 2,016 blocks—it will sit at 141.67 trillion, a quieter dial setting that gives miners a brief moment to catch their breath.

Basically, Bitcoin’s mining difficulty is a native network setting that recalibrates about every two weeks, keeping new blocks arriving at roughly ten-minute intervals, no matter how much computing muscle is vying for the prize.

As miners and hashpower flood in, block intervals speed up and the difficulty tightens; when that power recedes, the difficulty parameter loosens when block times are slower, preserving Bitcoin’s issuance schedule as steady, predictable, and stubbornly resistant to gamesmanship.

So far, 2026 has seen two difficulty changes, and both of them were reductions. The last difficulty change was a drop of 1.20% which was preceded by a modest 0.04% increase last year on Dec. 24.

The last time the difficulty was in this same range was 18,144 blocks prior to block height 933408, when the difficulty change led to 142.34 trillion for two weeks on Sept. 18, 2025. The latest difficulty dip offers bitcoin miners a modest reprieve, arriving as revenue has been sliding steadily over the past eight days.

Also read: 11 EH/s: Bitmain Eyes a New Bitcoin Mining Proxy? – Miner Weekly

On Jan. 14, hashrateindex.com stats show the estimated value of a single petahash per second (PH/s), known as hashprice, was $42.20, and by Jan. 22 it had slid to $39.90—down 5.45% over the week, a tidy reminder that mining can turn unfriendly in a hurry.

For miners, the window ahead offers a narrow but meaningful chance to steady operations while margins remain under pressure, even as the broader economics of securing the network continue to shift beneath their feet.

FAQ ❓

• What caused Bitcoin’s latest mining difficulty change? Bitcoin’s difficulty adjusted lower after a decline in network hashpower, triggering an automatic recalibration at block 933,408.
• How much did Bitcoin’s mining difficulty drop?The difficulty fell by 3.28%, setting the new level at 141.67 trillion for the next 2,016 blocks.
• Why does Bitcoin adjust mining difficulty every two weeks?The network recalibrates difficulty roughly every two weeks to keep block times near 10 minutes regardless of hashpower changes.
• Does the difficulty drop help bitcoin miners right now?Yes, the reduction offers short-term relief as miner revenue per petahash has declined over the past week.