Take this as a ***long term*** task but, as a sovereign nation, I think we should have our own currency too.
Ministry of Finance will sure agree we'll must have exchange rates to other world's currencies.
Even if it may sound strange, having an internal currency which is related to external ("normal") ones is not so hard task: someone did it even if not being a nation (look at SecondLife's "***Linden dollar***", ***L$***, which is having exchange rates with USD and, thus, all other currencies in the world.
No need to say what we can do, with our currency: I'm not an economist but you may figure it easily.
I'll propose some ***names*** even:
1. ***Asgardia's crown***: coming from Norse's actual currency, adapted to our Nation's name: the "***crown***".
2. ***Asgardia's Credit***: a fair used Sci-Fi currency, the "***credit***".
3. ***Asgard***: same as before but more compact name.
4. ***Solar***: with **XSL** as currency symbol. *@petrv* proposal.
Currency code ISO-4217: **XAS** (
) which is currently free to use.
All of this will hopefully be useful to develop ***internal commerce*** (eBanking) and finance.