Major public miners' BTC output fell in June despite lower difficulty

Three U.S.-listed Bitcoin mining companies—CleanSpark, BitFuFu, and Canaan—all reported a decrease in their BTC production in June compared to May, despite a significant drop in network difficulty, according to The Block. CleanSpark's output fell to 614 BTC from 671 BTC, BitFuFu's dropped to 125 BTC from 177 BTC, and Canaan's declined to 64 BTC from 90 BTC. The report noted varied reasons for the decline: CleanSpark's average operating hashrate fell from 46 EH/s to around 43 EH/s; BitFuFu's total hashrate dropped from 19.5 EH/s to 15 EH/s due to a reduction in hosted capacity; and Canaan cited power grid maintenance. The production decrease came as Bitcoin's mining difficulty saw a downward adjustment of over 10% in mid-June, reaching its lowest level of 2026.