Non-fiat fiat money?
> a form of non-fiat digital money
Sorry? I might have my definitions wrong, but how is that non-fiat digital money? Sounds to me like the very definition of "fiat money": A type of currency that is not backed by gold or silver (that would be "representative money") but simply issued by some institution (government, bank) who entirely backs it.
Our quaint old currencies were originally backed up by gold, everybody could go and exchange his dollars for gold. That worked until governments needed to devalue their currency to pay for warfare, so our initially "representative" currencies became "fiat", ie. not worth anything except a promise each government will consider its currency as having some value.
Now the only difference I see with cryptocurrency, is that said cryptocurrency is not even backed up by some nation's government (which always has some financial credibility) but only by some shady fly-by-night company and the greed of people hoping to make a quick buck. It simply lacks the guarantee (as weak as it might be nowadays) that backs up existing currencies, and thus is only a vessel for speculation (and money laundering).
I know I'm going to be downvoted by all the hip kids who have to follow all the current fads lest they lose their street cred, but if you look at it with a cool head, the only advantage cryptocurrencies might have is to not be controlled by any government out there, which might be vital to some, but isn't really important for most. In this perspective government-controlled cryptocurrencies definitely have no advantage or even reason to be, being at the same time government-controlled and volatile... Take the worst of two worlds and market it as progress...