Lightning Specification Meeting 2022/03/14

[Roasbeef]

The meeting will take place on Monday 2022/02/28 at 7pm UTC (5:30am Adelaide time) on Libera Chat IRC #lightning-dev. It is open to the public.

A video link is available for higher bandwidth communication: https://meet.jit.si/Lightning-Spec-Meeting

Pull Request Review

• Finalize legacy sphinx format BOLT 4: Remove legacy format, make var_onion_optin compulsory. #962
• Reach possible conclusion re mutual close requirements bolt 2: coop-closing clarification #964
• ports for mainnet/testnet, etc BOLT 1: introduce port convention for different network #968
• Onion messages BOLT 7: Onion message support (features 38/39) #759
• Blinded fees Blinded fees #967
• Route blinding Route Blinding (Feature 24/25) #765
• Dual funding interactive-tx: Add dual-funding flow, using the interactive tx protocol (feature 28/29) #851
• Offers Offers #798
• Add dust exposure threshold Add a max_dust_htlc_exposure_msat #919

Waiting for interop

• p2p websockets websocket address type: allow transport over RFC6455 #891
• Finalize channel_type behavior in accept_channel Echo channel_type in accept_channel #960
• Simple turbo channels enablement Explicitly allow funding_locked early, and support alias scids (feat 46/47/50/51) #910
• don't force close until error is received for chan reest Nodes shouldn't publish their commitment when receiving outdated channel_reestablish #934
• Dynamic DNS support in gossip messages BOLT 7: add gossip address descriptor type DNS hostname #911

Long Term Updates

• Liquidity ads option_will_fund: liquidity ads #878
• Splicing Splice draft (feature 62/63) #863
• Simplified commitment Feature 106/107: option_simplified_update. #867
• Trampoline routing Trampoline Routing (2021 edition) (Feature 56/57) #829 and Trampoline onion format (Feature 56/57) #836
• Upfront payments / DoS protection Hold fees #843
• Peer storage backup Peer backup storage (feature 40/41/42/43) #881
• Anonymous gossip
• Taproot updates

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.

• lnprototest (https://github.com/rustyrussell/lnprototest)

[Roasbeef]

t-bast won't be at this spec meeting, so I copied over some items from the last meeting, and added some of the newer PRs near the top of the list.

[t-bast]

Thanks @Roasbeef!

[michaelfolkson]

Transcript: https://github.com/michaelfolkson/bitcointranscripts/blob/lightning-2022-03-14/lightning-specification/2022-03-14-specification-call.md

[t-bast]

Thanks @michaelfolkson!