dlcspecs/meeting/meeting_may_6_2020.md

May 6th (7 PM CST)/7th (9 AM JST) Meeting

On-boarding Contributors

• Adding intro doc (should this go into the top of readme instead?)
  • https://github.com/discreetlogcontracts/dlcspecs/issues/16
  • Tibo has a md for this! Review needed
• Add new blog posts (lightning dlc related) to resources page
• Anything else for the resources page?
  • Chris suggests we add links to reference implementations
  • Antoine suggests a glossary like BOLT 0

Rust DLC

• Overview
  • Yancy has a PR in for basic functionality and simple unit tests in Rust
  • Next step is to make it look more like something that belongs in Rust BTC and will go there eventually
• Where should code go?
  • https://github.com/discreetlogcontracts/dlcspecs/issues/17
  • rust-bitcoin
• Initial DLC functions
  • https://github.com/p2pderivatives/rust-dlc/pull/1
• How do we want to do bindings to secp256k1?
  • Fork of rust-btc's secp256k1
    • maintained in that repo
  • We want to have commits everyone uses off of libsecp for compatibility
• Goals for first DLC project on rust-lightning?
  • https://github.com/rust-bitcoin/rust-lightning/issues/605
• LN Hackathon
  • Antoine is going to post a write-up of changes that need to be implemented
  • DLC output on LN commitment tx
  • We need to figure out build stuff wrt libsecp256k1 beforehand if possible
    • Actually Lloyd has us covered with a branch where we can just implement sigpoint computation

Oracle Standards

• Signature serialization standard (tagged hashes?)
  • https://github.com/discreetlogcontracts/dlcspecs/issues/21
• Signing numbers (prices)
  • Tibo is working on a proposal that he wants to post next week for discussion
• Maybe look into https://blog.coinbase.com/introducing-the-coinbase-price-oracle-6d1ee22c7068

Tweaked Public Key/Point Computation for CETs

• Privacy against mempool observer
  • https://github.com/discreetlogcontracts/dlcspecs/issues/35
  • Everyone likes the resolution of this, PR to come soon
• Is this relevant? https://github.com/LNP-BP/LNPBPs/blob/master/lnpbp-0001.md

Re-writing Specification (to be BOLT-like)

• Transactions.md
  • https://github.com/discreetlogcontracts/dlcspecs/pull/14
• Make sure to define everything before use. Maybe a glossary?
  • https://github.com/discreetlogcontracts/dlcspecs/issues/29
• Perhaps we want a layered design picture first, and then make spec modules follow this
  • Nadav will open issue for this

Interoperability and Testing

• Coming up with test vectors for edge cases
  • https://github.com/discreetlogcontracts/dlcspecs/issues/30
    • We should have separate files for unit and integration test vectors
      • integration test vectors for things like timeouts
• What do we need to do to become inter-operable?
  • Low R signing
  • Schnorr/BIP 340 updates
  • Fee stuff?
  • Any diffs left after that?
    • Hard to tell but nothing we know of

DLC Coordination

• Copying wasabi