The answer is the lightning protocol, isn't it?
Is it?
Does it use nostr?
How does it show on nostr?
No I don't understand anything.
At all
Discussion
Yes it uses lightning. I'm not sure how lightning payments on nostr work, presumably it looks up in the nostr profile the lnaddress and then your wallet makes a payment to that address.
Then they call it a zap because, nostr.
But the note you can attach to a zap, that also appears in Nostr clients. Is that a 'note' in the same way a post on nostr is a note? Or is that another note that just somehow appears here?
Here is some reading on it:
https://github.com/nostr-protocol/nips/blob/master/57.md
Yes they are kind of nostr note.
I'm pretty sure you can add a message to any lightning network transaction because my wallet of Satoshi would show me what was written in zaps when I was using that to receive zaps