Sending ecash over nostr between two different Cashu wallets. Ecash is a bearer token, that means you can send it via any communication layer. Turns out, untraceable money and uncensorable speech go really well together
Cashu wallets with Nostr support:
https://github.com/cashubtc/cashu
Nutshell (top): github.com/cashubtc/cashu
Nutstash (bottom): nutstash.app