Lightning Specification Meeting 2021/06/21

[t-bast]

The meeting will take place on Monday 2021/06/21 at 8pm UTC on Libera Chat IRC #lightning-dev. It is open to the public.

Pull Request Review

• Replace BIP69 Concretize Output Ordering to be less confusing #876
• Remove HTLC amount restriction Remove HTLC amount restriction #877
• Explicit channel_type negotiation BOLT 2: send channel_type in open/accept #880
• Clarify when max-accepted-htlcs applies clarification: when does max_accepted_htlcs apply? #745

Long Term Updates

• Dual funding interactive-tx: Add dual-funding flow, using the interactive tx protocol (feature 28/29) #851
• Splicing Splice draft (feature 62/63) #863
• Trampoline routing Trampoline Routing (2021 edition) (Feature 56/57) #829 and Trampoline onion format (Feature 56/57) #836 (@t-bast)
• Offers Offers #798 (@rustyrussell)
• Upfront payments / DoS protection Hold fees #843
• Blinded paths Route Blinding (Feature 24/25) #765 (@t-bast)

Backlog

The following are topics that we should discuss at some point, so if we have time to discuss them great, otherwise they slip to the next meeting.

• Hornet (@cfromknecht)
• lnprototest https://github.com/rustyrussell/lnprototest (@rustyrussell)

[t-bast]

As usual, feel free to add topics, especially @rustyrussell if there's a topic you'd like to cover among quiescence, protocol upgrade, or the other PRs you started working on.

[Crypt-iQ]

Would like to add this topic #873 as well, I updated it with a comment to address IRC comments. I'll be available during the spec meeting to talk about it also.

[t-bast]

We can definitely talk about it during the meeting if you think it's necessary.
IMHO we're at the point where someone needs to work on a spec PR and an implementation to make progress, unless there are specific questions that need to be answered?

[t-bast]

Meeting logs can be found here: https://lightningd.github.io/meetings/ln_spec_meeting/2021/ln_spec_meeting.2021-06-21-20.06.log.html