The bitcoin exchange rate recovers after falling more than $400 after the recent historic high. The decrease was due to the message about the theft of a $31 million tokens bitcoin tether. This post has renewed fears about the safety of digital currencies. On the American stock exchange Bitfinex, bitcoin at 13:50 MSK was trading at position $8170,20, stepping back from previously achieved a session low of $7790,00. On Monday the bitcoin exchange rate reached a historic high of $8310,20.