A State Council committee led by Vice Premier Liu He announced the crackdown late on Friday as part of efforts to fend off financial risks. It was the first time China's cabinet has targeted virtual currency mining, a sizable business in the world's second-biggest economy that some estimates say accounts for as much as 70% of the global crypto supply.
Crypto miners use increasingly powerful, specially-designed computer equipment, or rigs, to verify virtual coin transactions in a process that produces newly minted cryptocurrencies such as bitcoin. The latest shakeout in digital currencies also stems from tighter scrutiny in the United States. Last Thursday, U.S. Federal Reserve Chairman Jerome Powell said they pose risks to financial stability, and indicating that greater regulation of the increasingly popular electronic currency may be warranted.