Bitcoin Network Difficulty Drops Year Over Year for Second Time Due to Mining Challenges
The Bitcoin network difficulty has fallen year over year for only the second time in its history, according to data provider Hashrate Index. The decline is attributed to weak mining economics and competition from AI/HPC infrastructure expansion, as well as regional disruptions including power curtailments in Texas and Iran-related outages. Bitcoin's hashprice — miner revenue per unit of hashrate — reached a near-record low of $27.67 per PH/s/day in June 2026, pushing many mining operations to or below break-even levels. This led to two significant difficulty reductions during the first half of the year: an 11.16% drop in February and another 10.09% decline in June. The rise of AI/HPC infrastructure has created a structural competitor for capital and electricity previously used for Bitcoin mining, with public miners repurposing sites or reserving power capacity for alternative workloads.
Topics: AI/HPC competition Bitcoin hashrate mining difficulty