Bitcoin mining difficulty fell by about 11% in its latest adjustment, the steepest decline since China’s 2021 crackdown on the sector. Data from Blockchain.com shows the metric dropped from more than 141.6 trillion to roughly 125.86 trillion, pointing to a sharp reduction in the number of machines actively securing the network.
Mining difficulty sets how hard it is to discover new Bitcoin blocks. The network recalibrates it roughly every two weeks to keep block production near a 10-minute average. A downward adjustment is normal in itself, but the size of this move stands out. It followed a rapid slide in hashrate as miners shut down equipment under pressure from lower prices and weather-related outages in the U.S.
Lower Bitcoin price and energy costs squeeze miners
According to the report, Bitcoin has fallen from its $126,000 all-time high in October to around $69,500. That drop has made operations harder for miners using older machines and paying high power costs. Some firms have taken another route and redirected hardware toward artificial intelligence-related business, where large companies are offering steadier contracts and more attractive economics.
Bitfarms (BITF) stood out after saying it is no longer a bitcoin company and is now focused on data center development for high-performance computing and AI workloads. Its shares rose after that statement.
Hashprice drops from nearly $70 to just above $35
Profitability has also weakened on a per-unit basis. Hashprice, a common measure of mining revenue per terahash, has fallen from nearly $70 when Bitcoin was trading at its record level to a little over $35 now. That slide cuts deeply into miner cash flow. For operators already dealing with expensive electricity, the margin pressure is hard to absorb.
Winter storms made the situation worse, especially in Texas. Grid operators asked for power curtailment to preserve electricity for residential use, and public mining companies reduced production. Some saw daily bitcoin output fall by more than 60%. As more machines went offline, the network’s hashrate dropped and difficulty adjusted lower.
Difficulty cuts act as a built-in balancing mechanism
A sharp fall in difficulty can look alarming, but the adjustment is part of Bitcoin’s built-in balancing system. With fewer competitors online, miners that remain active can win block rewards more easily, which can improve profitability and help keep operations viable.
The report also notes that large difficulty declines have historically appeared during miner capitulation. At times, those periods have come before price stabilization or a rebound, as miners often sell mined BTC to cover operating expenses and forced selling pressure starts to ease.