Can you point me toward _any_ proof-of-concepts for Chaum's scheme as applied to digital currency? Hell, there's still people on Bitcointalk trying to figure out how to bootstrap off of Bitcoin with some of those ideas. I don't think it's fair to throw "amateur" around like that, Bitcoin solves separate problems entirely. Crypto-anarchists spent decades theorizing things but never solving problems.

Bitcoin shipped and that shouldn't upset you so much.