After China’s persecution of bitcoin miners, some mining farms reportedly tried to disguise themselves as data researchers and storage facilities to stay in business. This month, China has intensified the hunt and is looking for miners hiding in colleges, research institutions and data centers, according to information from Bloomberg. The reason for the urgency is concerns about the country’s energy supply for the coming winter season, said unnamed sources. The new round of scrutiny could further decrease the amount of bitcoin mining taking place in China, which for years was the industry’s biggest country and, until April, had a 46%...