Bitcoin's mining difficulty dropped 9.13 percent at block 975,744, resetting to 134.82 terahashes from 148.36T. The adjustment took effect Saturday at 12:02 AM EST.
This is the largest downward move since June 14, when the network cut difficulty 10.09 percent. Adjustments occur every 2,016 blocks—roughly two weeks—to maintain a constant 10-minute average block time.
When hash rate falls, the protocol lowers difficulty automatically to keep block production steady. For miners, lower difficulty means less competition and better margins per unit of hash rate. The relief is critical: older rigs like some S19 models turn unprofitable if Bitcoin's price drops or electricity costs spike. A significant difficulty cut can keep marginal hardware online.
Miner capitulation has likely driven the hash rate decline. The Crypto Fear & Greed Index sits at 13, signaling extreme fear. Rising energy prices in mining-heavy regions, seasonal power constraints, and equipment shutdowns all contribute. Miners holding underwater positions have been powered down or sold off.
The immediate winner: miners who stayed online through the period of elevated difficulty. They now need less energy and compute to claim the same block rewards. Network stability holds—difficulty adjusts algorithmically regardless of miner count, ensuring blocks process reliably and Bitcoin's supply schedule remains predictable.
