A solo Bitcoin miner operating through the Solo CK pool successfully mined block 910,440 on a recent Sunday, claiming a full reward of 3.137 BTC worth approximately $371,000 at the time. The reward comprised the standard 3.125 BTC block subsidy plus 0.012 BTC in transaction fees ($1,455) from 4,913 processed transactions.
This achievement is exceptionally rare, with odds estimated at 1 in 650,000 per block for a miner contributing 1 petahash per second (PH/s) of computational power. Despite Bitcoin's network difficulty hovering near all-time highs of 129 trillion and industrial-scale operations dominating the hashrate, this marks the fourth solo mining success in 2025 alone. Previous instances include wins in February, July 4 ($350,000), and July 27 ($373,000).
Samuel Li, CTO of ASICKey, emphasized that while modern hardware enables such victories, solo mining remains "mostly a lottery" without tens of PH/s capacity. The rising network difficulty has pressured even professional miners, prompting diversification into AI and high-performance computing. Though theoretically accessible, solo mining demands substantial hardware investment and cheap electricity, rendering consistent profitability unlikely for most individuals.