Bitcoin Surge Is Driven by People Leaving Riskier Digital Currencies, Say Execs Bitcoin’s dramatic surge may be more than just a speculative frenzy. The recent rally is being driven partially by enthusiasts rotating out of riskier digital assets and into the more established cryptocurrency, according to industry executives. "A lot of the volume into bitcoin right now is actually not dollar or yen or euro into bitcoin, but is rather alt digital assets," said Peter Smith, co-founder and CEO of…