# EIP-7732 (ePBS) Breakout #17 Meeting Notes ### Current Status: - **Happy Case:** Prysm and Teku are finalizing the ePBS devnet successfully. - **Edge Case Under Investigation:** - Prysm does not receive the payload from Teku over gossip. - Ensuring that the payload can be requested through a sync RPC request and processed in a timely manner. - This issue is more challenging with a **6-second slot time**. --- ### Next Steps / Updates to the Spec: - **Planned Changes (to be done within a week):** - Add `slot` to the **payload envelope**. - Remove **payload withheld** for payload attestation. - Switch to **Francesco's all-in-one fork-choice design**. --- ### Edge Cases Discussed: 1. Receiving a **beacon block** but the corresponding **execution block** is unknown, while the **parent beacon block** is known. 2. Receiving an **execution block** without knowing the associated **beacon block**. 3. After receiving a **beacon block**, the **execution block** never arrives within **8 seconds**. 4. Syncing a parent block that **reorgs the previous block's full status**, which has been a source of bugs. --- ### Open Questions: - **Payload Request:** Should the payload request use **block hash** instead of **block root** for easier lookup? --- ### Client Participation: - **Nimbus** contributor will start work next week. - **Lighthouse**, **Lodestar**, and **Grandine** are currently missing from participation.