Yeah. Technically that should be possible. But why would you do that is the real question. Afaik you won’t be able to use GNU Taler without an existing backend. Your backend would be a bank and why not just withdraw coins from there. I don’t know whether you can self host the backend. There would be no reason to be afraid of the bank knowing where you send the coins to as that is pretty much hidden from the bank. I explained GNU Taler to my best abilities in this comment: lemmy.world/comment/10414943