That’s some 2030 shit right there. 🤯

Honestly this is what I'm waiting for.

That would be so awesome

Every nsec is an onchain wallet, when creating a nostr account you could create an xpub for the user, the user could keep it private in a nsec bunker, other user would send an event asking the npub for an address and the bunker would give it. Or the xpub can just be public if the user wants.

that would be cool, but slow

Yes Supertestnet built a tool similar to what you're requesting I believe Could modify one of his repos if needed check his github https://github.com/supertestnet

I support anything with default npub bitcoin, whether on-chain, lightning, or ecash! Not meant to be cold storage but zero setup nostr hot wallet. 🤓