I see a lot of talk about finding a unicode currency symbol for BTC and so on.
Has anyone thought about just adopting the Spesmilo for Bitcoin?
http://en.wikipedia.org/wiki/SpesmiloBitcoin could be THE new spesmilo.
There's also the Stelo which was a revival attempt of the Spesmilo,
http://en.wikipedia.org/wiki/SteloBitcoin would then get automatic promotion from Esperanto speakers/community too.