Bitcoin mining difficulty climbed 14.7% to 144.4 trillion at block height 937,440, marking the largest absolute increase ever recorded on the network. The adjustment follows a sharp rebound in hashrate after widespread weather related power curtailments across the United States temporarily disrupted mining operations.
Mining difficulty, a relative measure of how hard it is to produce a new block, automatically adjusts every 2,016 blocks roughly two weeks to maintain an average 10 minute block interval on the Bitcoin network. During the most recent epoch, blocks were mined at an average of 8 minutes and 47 seconds, significantly faster than the protocol’s target, triggering the upward revision.
Network hashrate rose from approximately 884 exahashes per second to 1,030 EH/s over the same period, reflecting the return of substantial mining capacity.
U.S. Winter Storm Disruptions Reversed
An estimated 200 EH/s had gone offline during severe winter conditions, slowing block production and leading to an 11% downward difficulty adjustment in the prior cycle. Major pools, including Foundry USA, saw significant temporary declines in connected hashrate.
Mempool developer “Mononaut” noted that;
As weather conditions improved, miners reactivated equipment, restoring output and pushing difficulty higher. While the 14.7% increase ranks among the largest modern adjustments, it remains below the network’s all-time peak above 155 trillion reached in November 2025.
Disclaimer
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