Bitcoin's network experienced a significant mining difficulty adjustment on March 21, 2026, at block height 941472, with a 7.76% decrease to 133.79 T, according to CloverPool data. During this adjustment period, the average network hashrate was approximately 760.10 EH/s, and the average block time was 12 minutes and 36 seconds. This extended block time, significantly above the 10-minute target, indicates a reduction in active miner hashrate, prompting the substantial difficulty decrease.