Ammon News – Bitcoin fell nearly 5 percent on Friday after China’s central bank said it would crack down on cryptocurrency trading, banning overseas exchanges from providing services to mainland investors. In response to the latest move, Bitcoin, the world’s largest cryptocurrency, dropped over 6 percent to $42,2167, having earlier been down about 1 percent. Smaller coins, which typically rise and fall in tandem with Bitcoin, also tumbled. Ether fell 10 percent while XRP a similar amount. China’s central bank on Friday said all financial transactions involving cryptocurrencies are illegal, sounding the death knell for digital currencies in China after…