This Group of Four Now Dominates Over 70% of a Key Blockchain Resource

Four Bitcoin mining pools—Foundry Digital, AntPool, ViaBTC, and F2Pool—controlled over 70% of the network's hashrate as of a June 23, 2026 snapshot from miningpoolstats.stream. The concentration creates a two-tier market favoring institutional clients, prompting independent miners to reconsider which pools they use.