How dare this blogger question the claim made by von Muses that money must arise out of an already existing commodity!?
I don't view the regression theory of von Mises as a claim that money must arise from a commodity. That, IMHO, is a bad interpretation.
I view such theory as an explanation of how money economies started from previous barter economies.
Bitcoin does nothing to invalidate such explanation, nor such theory implies that bitcoin could not exist/work.
The link between the bitcoin money economy and previous barter economies was made the day some people decided to exchange bitcoins for dollars. There's a topic on this forum about it.