After old mining machines shut down in large numbers, but before the difficulty adjusts, the Bitcoin network goes through a period where blocks are actually produced more slowly. This window can last from a few days to two weeks, depending on the scale and timing of the shutdown.
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Step 1: Understand How the Network Reacts After a Shutdown
Bitcoin's difficulty adjustment is not real-time. The protocol only adjusts difficulty after every 2016 blocks (about two weeks) are mined. When mining machines shut down and the total network hash rate drops, block production slows down immediately — instead of an average of 10 minutes per block, it might now take 12, 15 minutes, or even longer.
A real example from February 2026: Winter Storm Fern caused Texas hash rate to drop from 1.13 ZH/s to about 663 EH/s, and block production was noticeably slower than planned. The network did not execute a difficulty adjustment until February 7, two weeks later, with an 11.16% difficulty reduction. During those 12 days, miners were indeed operating in "slow motion."
Step 2: What Happens During This Period
| Phenomenon | What It Looks Like | How Long It Lasts |
|---|---|---|
| Longer block times | From 10 minutes to 15-20 minutes or even longer | Until the next 2016-block cycle ends |
| Slower transaction confirmations | Users may see temporary increases in gas fees because they need to "bid" to get their transactions prioritized | Continues for the same period |
| Pressure on miner revenue | With the same hash rate, miners earn fewer blocks per unit of time | Continues for the same period |
In June 2026, after miner profit margins were continuously squeezed, difficulty dropped from 138.96 trillion to 124.93 trillion (a single reduction of 10.09%), the second-largest drop of 2026. During that window, about 20% of miners were operating at a loss, and the slower block production further squeezed cash flow for the remaining miners.
Step 3: What Happens After the Difficulty Adjustment
When the 2016 blocks are finally mined, the network recalculates difficulty based on the actual time taken. If blocks were indeed slower (actual time > 20160 minutes), difficulty will be reduced.
On June 15, 2026, Galaxy Research confirmed that miners had entered a "capitulation phase," with cumulative difficulty down more than 20% from its peak — the largest peak-to-trough decline since China's ban in 2021.
After the reduction, the remaining miners will find mining "easier" — the same hash rate can mine more coins, and profitability recovers. But this "recovery" only takes effect when the next cycle begins, not immediately.
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How You Can Check This Yourself
Open BTC.com or mempool.space and look for the "Next Difficulty Adjustment" countdown and estimated adjustment percentage. If the estimate is negative, it means the current cycle is indeed producing blocks more slowly, and there are X days and X hours left until the adjustment takes effect. This countdown itself tells you how much longer the "pain period" from miner shutdowns will last.
