Blockchain goes mainstream. Bitmain, the Chinese company responsible for roughly 30% of the world's Bitcoin mining operations, has filed for a Hong Kong IPO, revealing details about the company's earnings. The company reported profit of $742.7 million for H1 this year, almost eight times growth on the same period last year, but analysts suggest the company suffered a massive decline in Q2 this year. A huge percentage of Bitmain's assets are highly volatile cryptocurrencies, many of which have plummeted in value this year. TechCrunch