Replying to Avatar Dan Gould

Serverless Payjoin BIP draft has been submitted

A few questions to reach consensus on:

- WebTransport or Nostr or WebSockets or ?

- Is the IK cryptosystem ideal?

- Take this opportunity to ship long lived contacts?

- How should pubkeys be encoded?

If you think it's Nostr's time to shine or you want to see BIP 47 (or some alternate?) contact system baked in, now's the time to speak up so we have a unified front moving forward.

https://github.com/bitcoin/bips/pull/1483

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josie 2y ago

had a quick read, not clear to me why you would need BIP47 or something like it (the PR also mentions silent payments).

what is the static payment code used for?

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Dan Gould 2y ago

definitely wound not need a static payment code. However, a cryptographic handshake could initiate keys with strong forward secrecy (unlike the first message of 0-rtt) for subsequent and could be used as an identifier for a persistent contact. Might be overkill & out of scope.