EPF Dev Update #4

This week

• Investigate Lighthouse code base, with a focus on beacon node and block processing.
• Look into project ideas and work on project proposal, more below
• EPF meeting notes

Lighthouse Beacon Node

I spent some time going through Lighthouse beacon node code base this week, and put together some notes and a high level diagram (still a WIP). More detailed notes can be found on this page.

This diagram is not complete. My goal right now is to try to understand how the Lighthouse consensus layer works at a high level, so I have intentionally skipped some functionalities (metrics, validator etc), error paths and details. Any feedback is welcomed!

Project update

I will most likely be making small contributions within Lighthouse EIP-4844 implementation, tooling and testing. I will be catching up with my mentors from Lighthouse team to figue out some next steps. and I plan to have a draft project proposal soon.

Areas I'm currently looking into:

• EF Consensus Tests for EIP-4844
  • capella tests passing, not much to do atm
• Builder API updates for EIP-4844
  • potential option, opportunity to contribute to the specification as it hasn't been started
  • reading through some discussions on discord, it looks like the main changes in CL are:
    1. handling blobs_sidecar in the submitBlindBlock response; and
    2. validator to validate the blob with the returned blob_kzg_commitments
  • my notes here
  • next steps:
    1. look into how CL currently interact with the builder APIs
    2. participate in spec discussions where possible
• Network simulation with blobs using Testground
• Unit testing in Lighthouse on EIP-4844 related modules
• Potentially look into some good first issues, such as this one
• Other tasks listed in 4844 tracking issue

Looking forward to writing some code soon!