How legitimate is the rise of virtual currencies - all of them, and not just Bitcoin?
Not very, if research published this month by Tel Aviv and Tulsa university researchers in the Journal of Monetary Economics is correct.
The reseachers' story goes back to the Mt. Gox Bitcoin exchange in Tokyo that was originally set up as a trading post for fantasy-based game cards. It features two Bitcoin trading bots or automated programs, Markus and Willy, which the researchers believe kicked off the cryptocurrency's spectacular rise in value.
Taken over by Frenchman Mark Karpeles in 2011, Mt. Gox rose to become the world's largest Bitcoin exchange that handled well over two-thirds of all trades in the crypto currency.
Mt. Gox collapsed in 2014 after some 850,000 Bitcoins went walkabouts, Karpeles has pleaded not guilty to embezzlement charges and creditors around the world are chasing the dizzying amount of NZ$3.3 trillion that they say was lost by the exchange.