China’s central bank said all cryptocurrency-related transactions are illegal and must be banned, sending the strongest signal yet on its determination to crack down on the industry. All cryptocurrencies, including Bitcoin and Tether, are not fiat currency and cannot be circulated on the market, the People’s Bank of China said on its website. All crypto-related transactions, including services provided by offshore exchanges to domestic residents, are illicit financial activities, the PBOC said in the statement. This latest harsh directive, which sent Bitcoin dropping as much as 5.5% on Friday, comes as global markets grow increasingly concerned over a debt crisis...