Lightning Specification Meeting 2020/06/22

[t-bast]

The meeting will take place on Monday 2020/06/22 at 8pm UTC on IRC #lightning-dev. It is open to the public.

Pull Request Review

• Update BOLT 3 transaction test vectors to use static_remotekey Update BOLT 3 transaction test vectors to use static_remotekey #758
• CLTV expiry delta recommendations More conservative cltv_expiry_delta recommendations #785
• Clarification on the occurences of TLV records with the same type Clarification on the occurences of TLV records with the same type #777
• BOLT 3: fix definition of flip(B) in P BOLT 3: fix definition of flip(B) in P. #779

Long Term Updates

• Anchor outputs Anchor outputs #688 (@joostjager)
• Mempool tx pinning attack (@ariard @TheBlueMatt)
• [ ] Trampoline routing Trampoline Routing #654 (@t-bast)
• [ ] Blinded paths Route Blinding (Feature 24/25) #765 (@t-bast)
• [ ] FoaF and rebalancing [WIP] BOLT14: Sharing x bit of Liquidity Information in the Friend of a Friend Network of Sender and Receiver #780 (@renepickhardt)

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.

• Upfront payments / DoS protection
• Hornet (@cfromknecht)

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Post-Meeting notes:

Action items

• summarize the security loss the two-anchors proposal creates @ariard
• find voice/video meeting time to discuss anchors security @t-bast
• verify static_remotekey test vectors Update BOLT 3 transaction test vectors to use static_remotekey #758
• address multiple feedback on More conservative cltv_expiry_delta recommendations #785 @t-bast

The full logs can be found here

[ariard]

There is a long-term subject we should also track it's better support for enforcing standardness or normalizing feerates on Core-side. See bitcoin/bitcoin#18797 or bitcoin/bitcoin#13283

[t-bast]

In order to follow up on @ariard's security concern for the two-anchors proposal, are you available next tuesday (june 30) at 8:30pm UTC (early morning for rusty)?

We'd need some people from the following group (not necessarily everyone): @ariard @TheBlueMatt @Roasbeef @joostjager @rustyrussell @niftynei @cdecker.

This meeting will be open to anyone who wants to join and we'll provide a summary.