Receive to LN Address in Phoenix

[alltheseas]

user story

As a Phoenix wallet user who receives sats, I would like a way to generate a lightning address in app, so that I can more easily and readily share this easy to write down, share, and remember information with others who would like to send me sats.

acceptance criteria

1. there is a method to generate a LN address in Phoenix app (e.g. dpad85@acinq.co; HappyGiraffe21@acinq.co etc.)
2. there is a way to see my LN address in app
3. I can easily tap copy on the LN address, where the LN address is saved in device memory for easy sharing to other apps

implementation details

https://lightningaddress.com/
https://github.com/andrerfneves/lightning-address/blob/master/README.md
https://github.com/andrerfneves/lightning-address

related

[Improved] Nostr integration #503

[alltheseas]

Tangential: #264

[dpad85]

We're planning to support that through bitcoin/bips#1551 + BOLT12.

This is a bit different from the current Lightning address implementations, which rely on LNURL-pay + an http server and have some drawbacks. You can read more about this here: https://lists.linuxfoundation.org/pipermail/lightning-dev/2023-November/004204.html, as well as on the BIP linked above.