Week 14 Update

tldr;

• Reached out to Chainsafe to seek feedback on Lodestar issue
• Reviewing latest changes to ephemery specs (draft EIP)

Progress:

Genesis

• I created the above Lodestar issue as a basis for discussing the addition of the ephemery network. The current status of ephemery genesis in my Lodestar work is:
  • checkpointSyncUrl working with the existing Lodestar --checkpointSyncUrl flag
  • backup download url working without --checkpointSyncUrl flag
  • custom genesis file via CLI working with the existing--genesisStateFile flag
  • I have a genesis script draft working, and a draft PR for this in progress. It may be overkill to include this script in Lodestar itself (at packages/ephemery) since this just generates a genesis.ssz for ephemery. TBD
• Updating the draft PR following feedback from Chainsafe team

Reset

• Chainsafe team is keen to understand how reset would look from a UX perspective, especially how there would be alignment across clients (el + bn + vc)
• They shared the lodestar-quickstart script in the thread and suggested it could be a useful approach to reset, since it enables hard restart for both Lodestar and the selected EL when a new genesis is detected
• This could be a useful first step while investigating how clients can integrate their native approach to integrating ephemery reset, which is a higher implementation effort. Note Lodestar (Chainsafe) comment from nflaig: "The more I am thinking about this the more I see this solution implemented in tooling that manages the EL / CL, like dappnode, rocketpool, eth-docker etc., as the client acting as a process manager to restart itself might not be a practical for all client implementations."

---

Dev notes:

I encountered errors when I did not manually clear the Lodestar datadir (this would need to become a part of reset).

Default usage using checkpoint sync can be run as follows:
./lodestar beacon --network ephemery --checkpointSyncUrl https://checkpointz.bordel.wtf/

After cleared datadir (go to datadir then: rm -r ephemery) the stateroot is correctly downloaded using --checkpointSyncUrl flag

---

Reading list:

• https://github.com/ethpandaops/checkpointz
• https://eth2book.info/capella/part3/forkchoice/phase0/
• https://github.com/ethereum/annotated-spec/blob/master/phase0/fork-choice.md
• reth PR by Teri https://github.com/paradigmxyz/reth/pull/5124
• Lighthouse PR by Teri https://github.com/sigp/lighthouse/pull/4764