I'm trying to understand this myself so I hope my note doesn't come across as if I am criticising something about which I don't have full knowledge. As far as I can see the lightning tip bot is based in telegram and I imagine that many of the nostr users have now set up their "zapping" ability using that telegram setup. Is it the only way to setup that ability? I understand that nip 57 is a way of showing receipts for the payments made and may not be in of itself related to telegram but, and I may be totally wrong and happy to be corrected, looking at both https://github.com/LightningTipBot/LightningTipBot and https://www.massmux.com/howto-complete-lightningtipbot-lnbits-setup-vps/ telegram is featured in both. Again I want to point out I'm not criticising, I'm trying to verify whether a user has the ability to set up and integrate with "zapping" without using telegram.