"It’s a matter of when, not if, the Bitcoin bubble will pop, according to Allianz Global Investors. “In our view, its intrinsic value must be zero,” Stefan Hofrichter, the company’s head of global economics and strategy, wrote in a recent web post. “A bitcoin is a claim on nobody – in contrast to, for instance, sovereign bonds, equities or paper money – and it does not generate any income stream.”"