Key Takeaways Unknown miners hold 230,770 bitcoin blocks, 24.03% of all blocks, per Cloverpool data. Antpool ranks second with 109,004 blocks; Foundry USA leads current hashrate despite fewer historic blocks. Poolin filed Chapter 11 bankruptcy in New Jersey in July 2026 after ceasing Texas operations. Onchain statistics tracked by Cloverpool, the mining pool and platform formerly known as btc.com, show an entity labeled “unknown” sitting atop the all-time block count with 230,770 blocks mined, equal to 24.03% of every block the network has ever produced. That figure places the unknown category ahead of every named pool operating today, including industry …