Scanless Silent Payments tl:dr: We built a complete silent payment notification system into Sparrow Wallet using Nostr encrypted DMs. When you send a silent payment to a Nostr identity, the recipient is automatically notified via NIP-17 with everything they need to claim the UTXO — no blockchain scanning required. This is a proof of concept and almost certainly has security issues.

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This is cool. Although, sending something to your nostr identity could open up some correlation and timing attacks, I suppose. I wonder if we could do something just like in silent payments where you create a shared private key, and send payment details over Nostr to that instead encrypted. That way they can be correlation and timing attacks but there's nothing correlating these payments to anyone's specific identity and nothing tying them together. People still probably want to access these over tour with unique identities. to ensure that there's no correlation being tracked by nostr relays.
I never mind I just realized I'm just bringing back the scanning problem except now that you have to query relays to scan. Making the whole situation worse. Ignore me. 😄
Yegor Lapshov's avatar
Yegor Lapshov 2 months ago
Should we promote share as the primary way to onboard users from the web? It seems like the most effective tool to replace manual copy-pasting, making the transition from a browser to a Nostr client seamless for new users. I’m building a project right now and hit this exact wall. It’s easy to fix. I’ve just drafted a solution and shared it as NIP-222 on GitHub: This would be a massive win for your client and the ecosystem as a whole. Take a look, would love to hear your thoughts on pushing this forward.