EIP-7732 Breakout Room Call #22, August 29, 2025

system · August 21, 2025, 6:55pm

Agenda

Payload Post-State Availability in the EVM (EIP-4788 Implications Post-ePBS): Discuss EVM access to beacon state roots post-ePBS, which introduces separate consensus and execution state transitions. EIP-4788 exposes the parent beacon block root (containing a state_root, pre-payload), enabling proofs of pre-payload states (e.g., validator not slashed) but not post-payload states (e.g., consolidation requests processed in payload). Evaluate options:
- a. Leave as-is, using state.state_roots for post-payload access (grandparent payload, sufficient for most cases).
- b. New EIP exposing execution payload envelope root (like EIP-4788, for post-payload proofs).
- c. Add pre_state_root to beacon block (similar functionality to a).
Handling Beacon Block Body Fields Moved to Execution
- Description: Decide on fields shifted from CL to EL (e.g., blob_kzg_commitments, execution_requests) Options:
  - (a) Remove entirely (changes generalized indices; backward compatibility concerns, but no known breakage;
  - (b) Stub as empty, assert in STF (preserves indices, adds tech debt).
  - If removing, consider dropping unused deposits and eth1data (post-Pectra).
PR Reviews and Spec Updates
- Description: Review open PRs:
  - PR-4525: Rename execution payload header to bid. link
  - PR-4527: Remove inclusion proof/signed header from Gloas data column. link
  - Rebase block access list on Gloas spec (add to ExecutionPayload).
  - Consider ePBS rebase on EIP-7688 for SSZ consistency.
Discuss Potential Impact on Builder API: ePBS MEV Relays Design - HackMD
Discuss Process and Timing for Advancing Spec: epbs-devnet-0 spec