A “backdoor” in Bitmain’s mining equipment was found (and fixed) this week, and the SEC is reviewing its decision to reject a Bitcoin ETF.
BTCC (btcc.com) was launched in Shanghai in 2011 as a provider of Bitcoin exchange services.
Huobi (huobi.com) was launched in Beijing in 2013 as a provider of Bitcoin and Litecoin exchange services.
Segregated witnesses will be activated on Litecoin, and Bitcoin exchange Bitfinex appears to be in serious trouble.
Ever since Bitcoin’s inception its trust-minimizing consensus has been enabled by its proof-of-work algorithm. The work is performed by so-called miners; power hungry machines