Bitcoin mining difficulty plunged by nearly 8% at block height 941,472 on March 20 to 133. 79 trillion, according to CloverPool data. This signals a wave of capitulation among miners who are increasingly repurposing their massive energy infrastructure for artificial intelligence. Bitcoin Hashrate Sinks Below 1 Zetahash as Unprofitable Miners Pull the Plug The decline marks the second-largest downward adjustment of 2026