PeerDAS Breakout Room - Call #28 | May 06, 2025

[will-corcoran]

PeerDAS Breakout Room - Call #28 | May 06, 2025

• May 06 (Tues), 2025, 14:00 UTC
• Zoom link: https://ethereumfoundation.zoom.us/j/82523885094?pwd=mIBXul5QcwwmXU31ssZpogkOblGM4g.1

Resources

• Ethereum Protocol Call calendar
• PeerDAS-PM.md
• Google Doc Meeting Notes
• Previous call
• Facilitator email: [email protected]
• Facilitator Telegram: @corcoranwill

Agenda Overview

A. Client Updates
B. Devnet / Testing Updates
C. Spec / EIP Discussion
D. Open Discussion
E. Schedule

Agenda Details

A. Client Updates

CL Client Teams

Team	Active ICs	Previous Update
Lighthouse	Jimmy, Pawan + J	Fixing sync issues on Sunnyside
Prysm	Manu, Terence & Radek + Francis & Niram from Base	Working on merging PeerDAS branch into main
Teku	Dmitrii + Jerone Ost from Soneium	Completed cell proof, getBlobsv2. Working to get ready to merge into main
Nimbus	Agnish & Dustin	Improving column sync performance
Lodestar	Matt K, Katya + Derek & Hugh from Base	Working on integration testing with Kurtosis
Grandine	Hangleang & Saulius Grigaitis	Investigating column sync issues

EL Client Teams

Team	Active ICs	Pervious Update
Geth	Felix, Marius, Lightclient	Updating Fusaka to remove EOF. Working on issues with v1 blobs in payload
Nethermind	FLCL, Marcin	Working on internal reviews to prepare PR for master branch
Reth	Roman, Dan	Rebasing banch on top of main
Besu	Justin	-
Erigon	tbd	-
ethereumjs	Gajinder	Ready to test with Kurtosis and join devnet-7

B. Devnet / Testing Updates

Topic	Subtopic	Details
PandaOps	devnet-7	- Planning launch after Pektra upgrade - Spec: consensus-spec v1.5.0 (includes post-beta.5 changes) - Include validator custody unless implementation would cause significant delays - Fix sync issues from devnet-6 - Include PR #4284 (Improve DataColumnSidecarsByRoot request)
	devnet-6	- Client sync issues status update - Addressing issue with clients reporting unavailable subnet capabilities
Sunnyside Labs	Column Reconstruction	- Grandine considering implementing reconstruction during sync - Prysm working on similar implementation for emergency sync - Lighthouse performs reconstruction at head but not during range sync - Discussion on strategy for unhealthy networks where columns aren't reliably served
ProbeLab	EL Mempool	- Review results from our El mempool hit-rate study, complementing previous ethresear.ch post. - This includes extra insights on the engine_GetBlobV1 req/resp between the CL and the EL.

Spec / EIP Discussion

Spec	Number	Topic	Opened by	Status	Status / Discussion
consensus	#4291	Make *_REQUESTS_PER_PAYLOAD the same for mainnet/minimal	Justin Traglia	MERGED ✅	-
consensus	#4284	Improve DataColumnSidecarsByRoot request	Justin Traglia	MERGED ✅	-
consensus + EIP	#4277	Blob schedule PR (addresses #4267 and #4266)	Gabe	Open	- PLEASE REVIEW. Goal is to merge by Friday. "Ignore table parsing code btw" - Related: Update EIP-7594: Add blob count per tx limit via blobSchedule (link) [FLCL]
consensus	#4235	Additional PR for discussion: Release v1.5.0-beta.4	Justin Traglia	MERGED ✅
consensus	#4286	Fulu BlobSidecarsByRange/Root Deprecation Support	SunnysideJ	Open	Ready to merge?
consensus	#4284	Improve DataColumnSidecarsByRoot request	Justin Traglia	MERGED ✅	- Previous: single uint64 column index; New: list of indices with max_slots_per_sidecar (~128) - Discussion on inclusion in peerdas-devnet-7 due to incompatible implementations
beacon API	#524	Add new getBlobSidecars spec	Francis	Open	- Debate about all-or-nothing approach to blob retrieval - API primarily supports local block building where blobs are in public mempool - Data shows 60% success rate with current getBlobsV1 on mainnet
execution API	#630	Add EIP-7594 (PeerDAS) related changes	Francis	MERGED ✅	Cell Proof Computation, moved to tx-sender
builder	#117	builder-specs: Add EIP-7594 (PeerDAS) related changes	Francis	Open	-
EIPs	#9588	Update EIP-7594: Polish EIP, expand rationale	Alex	Open	Reviewing security w/ Francesco and Marco

D. Open Discussion

• Validator Custody Implementation

  • Most teams haven't had time to fully implement
  • Agnish from Nimbus: implement validator custody with column refill mechanism (link)
  • Decision needed on inclusion in peerdas-devnet-7

• Builder Support (Terence)

  • Builders serving as super nodes to help with blob retrieval
  • Possibility of adding this to builder specification

• Roadmap to Fusaka

  • Confirm plan: peerdas-devnet-7 → peerdas-devnet-8 → fusaka-devnet-0
  • peerdas-devnet-8 to include BPO feature
  • fusaka-devnet-0 to be based on devnet-8 spec

• PeerDAS Breakout Room

  • Depreciate this call and cover PeerDAS in ACD(?)
  • If so, what is the schedule for making this change?

E. Schedule

Date(s)	Item	Done
May ~7th	Pektra Mainnet	-
May ~7th	consensus-spec Release v1.5.0	-
Mid-May	peerdas-devnet-7	-
Late May	peerdas-devnet-8 (with BPO feature)	-
~June 1st	fusaka-devnet-0 (based on devnet-8)	-
June 8-14	EL / CL Interop	-
Post June 14	Audits: KZG libraries (c-kzg-4844, rust-eth-kzg, go-eth-kzg)	-

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[ralexstokes]

leaving a quick summary from ACDC #156:

proposal for next steps on peerdas/fusaka

• fix issues with devnet-6
• make devnet-7 spec with:
  • v1.5.0 (includes some minor changes after beta.5)
  • should include validator custody, unless implementation complexity would delay launching devnet-7 significantly
• make devnet-8 spec on top of devnet-7 with BPO feature

devnet-8 would form the basis for fusaka-devnet-0

[ralexstokes]

this isn't quite ready to merge, but is in a place for initial review

ethereum/EIPs#9588

[cortze]

The ProbeLab team would like to show some results from our El mempool hit-rate study, complementing our previous ethresear.ch post.
This includes extra insights on the engine_GetBlobV1 req/resp between the CL and the EL.