So currencies in your book is government issued money?
Shouldn't matter the version, when you say don't open, the app won't open at all? Try to use wallet= and point to the database file specifically
Usd also not stable itself but ok, if you know more then better for you, if crypto is not currency than what do you call El Salvador and btc?
Would the merchant need tap to pay for Dashdirect? can they produce physical gift debit card?
And so is the rock currency then?