Five Leading Public Miners Capture 21% of Bitcoin Production

A recent TheMinerMag report shows that five major companies—MARA, CleanSpark, Cango, Iris Energy, and Riot—accounted for 21% of all Bitcoin blocks in January 2025. This figure contrasts with 11.4% in January of the previous year, demonstrating a clear consolidation trend as large operators scale up.

The study indicates their combined hashrate exceeded 186 EH/s, setting a new benchmark for the public sector. Experts anticipate further growth for these publicly traded miners, given ongoing data center expansions. Meanwhile, network difficulty remains at record highs, underscoring the growing competitive climate.

Market participants warn that such concentration could eventually affect fee distribution and overall network resilience. However, analysts see minimal risk of monopoly because hundreds of smaller miners still maintain worldwide operations.