Interesting idea - can we make a cryptocurrency whose tokens have an expiry date, like the Zimbabwe dollars?

I like it. Another idea I had would be to make the client show the balance multiplied by some derivative of network hash rate. Since network hash rate is pretty closely correlated to fiat exchange rate (through mining profitability) this might result in a currency that was more easy to reason about for most people.

(instead of a coin being worth 5 times as much as when you bought it, your wallet would contain ~5x as many coins, with the balance increasing and decrease with market volatility)

Dogecoin actually will inflate indefinitely by 5% a year. Mining will never stop.

Really? Wikipedia claims there's a finite limit.

>Well we could always make a new worthless currency. And set it so it intentionally inflates infinitely so that this can't happen. Zimbabwe-coin maybe.

Yeah that might work. If you could somehow decay the value of held currency to encourage spending directly that would be even better though I can't imagine it being feasible.

> If you could somehow decay the value of held currency to encourage spending directly

Freicoin has a demurrage fee, based on the theories of Silvio Gesell:

http://freico.in/

https://en.wikipedia.org/wiki/Silvio_Gesell

Looking at http://en.wikipedia.org/wiki/List_of_radioactive_isotopes_by..., californium-253 has a nice 17 day half-life. I propose we make this our new value of currency.

That reminds me of a suggestion by Charles Eisenstein in his book Sacred Economics - decaying currency, along with zero or negative interest. It would be interesting to see such a "funcoin"! It might not even have to decay that fast to fend off speculators.

I'll buy into a cryptocurrency as soon as I see one that doesn't have the extreme built-in deflation of bitcoin etc. With the cornucopia of alternates surely there should be one.