The Bitcoin mining revenue decline in 2025 stems from plunging hashprices to structural lows around $35 per PH/s, rising operational costs, and Bitcoin prices dropping below $80,000, extending payback periods beyond 1,000 days and challenging even major operators' profitability. Hashprice falls sharply from $55 to $35 per PH/s, marking the harshest margin environment in Bitcoin [...]