TheBlock
Bitcoin mining difficulty fell 10.09% over the weekend, dropping from 138.96 trillion to 124.93 trillion at block height 953,568, according to Galaxy Research. The move ranks as the 11th-largest downward adjustment in the network's history and the second-largest negative retarget of 2026, behind only the 11.16% cut on February 7. The new reading is the lowest difficulty level since July 2025.
Why it matters
The cut was triggered by a roughly 15% decline in BTC's price so far in June, which compressed miner margins and pushed some operators to shut off unprofitable machines. As rigs went dark, blocks arrived more slowly: the prior epoch ran about 15.6 days against a 14-day target, the timing condition that produces a downward retarget. Galaxy Research attributed the move to a price-driven margin squeeze — the same driver behind Bitcoin's other major 2026 adjustments.
This adjustment is the third downward move of more than 5% this year, after February's 11.16% cut and a 7.76% reduction in March. Both the February and June moves now rank among the 11 largest negative adjustments on record, pointing to sustained economic stress across the mining sector rather than a one-off shock. Crucially, the February drop coincided with winter-storm shutdowns that eventually reversed, while the June move coincides with BTC's price weakness AND a structural reallocation of hashpower toward artificial intelligence and high-performance computing — capacity that may never come back online.
Market impact
A 10.09% cut raises the bitcoin produced per unit of active hashpower by about 11%. Combined with BTC's bounce off early-June lows, that has pushed spot hashprice back above $30 per petahash per second per day — Hashrate Index put it at $32.31 on Sunday, up from a trough in the high $20s that was widely viewed as near gross breakeven for higher-cost operators. The network's seven-day average hashrate stood at roughly 894 EH/s.
The network is already normalizing: average block times are back near 10 minutes, and Hashrate Index projects the next adjustment at roughly -0.8% around June 27, a sign the offline hashrate has largely stabilized rather than kept bleeding.
Frequently asked questions
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How much did Bitcoin mining difficulty drop in the latest adjustment?
Difficulty fell 10.09%, from 138.96 trillion to 124.93 trillion at block height 953,568. It is the 11th-largest negative adjustment in Bitcoin's history and the second-largest of 2026, behind an 11.16% cut on February 7.
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Why did Bitcoin mining difficulty drop 10%?
Galaxy Research attributed the cut to a price-driven margin squeeze after BTC fell roughly 15% in June. Unprofitable rigs went offline, slowing block production: the prior epoch ran about 15.6 days against a 14-day target, the condition that triggers a downward retarget.
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How does a Bitcoin difficulty drop affect miner economics?
A 10.09% cut raises the bitcoin produced per unit of active hashpower by about 11%. Combined with BTC's bounce off early-June lows, that pushed spot hashprice back to $32.31 per PH/s per day per Hashrate Index, up from a high-$20s trough.
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Is this the largest Bitcoin mining difficulty drop of 2026?
No — it is the second-largest. The largest 2026 cut was 11.16% on February 7, followed by a 7.76% reduction in March. The February and June moves both rank among the 11 largest negative adjustments in Bitcoin's history.
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Could Bitcoin mining difficulty keep falling after this cut?
Likely not immediately. Hashrate Index projects the next adjustment at roughly -0.8% around June 27, and average block times are back near 10 minutes. But a sustained BTC recovery could bring idled rigs back online and push difficulty higher, while renewed price weakness or further miner-to-AI pivots would extend the…
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