Bitcoin's estimated US mining footprint shrank as Russia's grew, with little change in top-three country concentration.
Hashrate Index's Oct. 5 country estimates put the US at about 335 EH/s, down from 345 EH/s in the previous edition, while Russia rose from 162 to 170 EH/s.
The US, Russia and China still account for roughly 66% of the estimated network. Their combined share slipped by about 0.8%, even as the global hashrate estimate stayed almost flat.
