3 Meeting Notes 2022 02 07

Elias Rohrer edited this page 2022-08-11 10:53:34 +02:00

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Table of Contents

• Releases
• Roadmap Progress
• Dependent Projects
• Spec
• Misc

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Releases

• 0.0.105 (https://github.com/lightningdevkit/rust-lightning/milestone/22)
  • Users are waiting on some java fixes
  • Unsure if bindings changes needed for this release. Matt to try it out this week
  • #1268 is there, would be nice to get it in, but not necessary (debug-only panic, makes it nicer for fuzzing)

Roadmap Progress

• Developer support

  • Jeff did a livestream with conor for blocksources with ldk
    • JC: note that lightning docs are not aware of features
    • MC: will need to update the docs to specify which parts require which features. Rust-bitcoin does this, can check them for reference
  • Today conor+jeff working on summer of bitcoin stuff

• Payment protocols

  • Val+steve to lead some charge on this
  • Val can speak to some coding on this, but i’m working on more bigger picture of payment protocols
  • Diff wallets in the space are going in diff directions, it’s a mess rn
  • We plan to interface with cash app, BW, breez, etc to make sense of things and engage with other lightning impls
  • VW coding onion messages
  • Focus on preserving serverless, client-side payment protocols
    • May be tradeoffs, medium term using some type of server, but long term p2p is the goal
  • Focus on improving ux for payments
    • Lightning should be hidden from users

• Language bindings

  • JS/TS
    • No update
    • Seems to work
    • Need default impl of networking using websockets, which means MC needs to chat more w rusty about c-lightning websocket support, maybe add websockets to peerhandler
      • Chunk of medium prio work
  • Java
    • Fixed bug of freeing sth early, will be in next release
  • Swift
    • No update, prob will need to update for this release
  • Taproot support
    • Zkps for gossip
      • AA: talked to some experts on zkps, proof approaches.
      • Found that w everything besides zksnarks, proof sizes are big and verification times long and libraries immature
      • Zksnarks, which require trusted setup, libs are still immature
      • Now looking for sth simpler that wouldn’t require as much complexity as a snark
      • Field is moving quickly, mature impls rare
    • Lnd taproot work by laolu
      • Had to impl in btcd first
      • Rust-bitcoin has taproot basically landed so we get to skip that part
      • Now working on some experimentation

• Anchor outputs

  • Anchor was not on the immediate roadmap late last year during planning, bc we have a lot of other stuff
  • One concern tho is without anchor lightning has concerns about confirmability of force closes when peer has been offline (feerate estimates out of date)
  • Some amount of that can be remedied in other ways, but if we start to see more on chain congestion, this may be a bigger concern for us due to being unable to confirm commitment txs

• Lightning Service Provider (LSP)

  • Steve: will need to see whether we push forward with this project (with a separate team within spiral org)
    • Leaning towards yes atm

Dependent Projects

• lightning-signer (https://gitlab.com/lightning-signer)

  • The project name is now “Validating Lightning Signer” – VLS as a cool acronym
    • Differentiates from blind signers that are external but don’t do validation
    • The name was also colliding with LSP previously
  • Ksedgwick: working on verifying what’s on chain and what’s not, adding block sourcing basically
  • KS: working on pushing thru some PRs to CL too, need to push them

• BDK-LDK (https://github.com/johncantrell97/bdk-ldk)

  • Jcantrell: will release the lightning node ive been working on tmrw, so that repo will be available
    • “Full fledged” node w cli tool, grpc, rpc apis, and web admin console
    • Example of using bdk for all chain stuff and ldk for all lightning

Spec

• 0-conf channels (https://github.com/lightning/bolts/pull/910)
• payment metadata (https://github.com/lightning/bolts/pull/912)
• No updates here

Misc

• review begs?

• Matt: got a bunch of papercut issues building up. Given we just landed a big PR from jeff, now landing phantom nodes, would be nice to do a release where we focus on that and clean up a bunch of smaller stuff and backlog. So doing that and going towards 0.1 would be nice

  • Bc cash app just launched, so hopefully we can focus on other things soonish
  • Good opp to do catchup work, spend a few weeks closing out small stuff

• Steve: officially announced today for cash app ldk launch