# RollCall #8 ## Details - Recording: https://www.youtube.com/watch?v=VVS9XBHrH2E&t=1s - Agenda: https://github.com/ethereum/pm/issues/1170 - Moderated by: [Carl Beekhuizen](https://github.com/CarlBeek) ## RIP 7755 - Contract standard for cross L2-calls - Presented by [Wilson Cusack](https://github.com/wilsoncusack) from the Base team - PR link: https://github.com/ethereum/RIPs/pull/31 - The goal of this RIP is to provide low level specification for arbitrary cross-chain calls, to be maximally on chain, and to provide a proof system with minimal trust assumptions - Discussion - [Andreas Freund](https://github.com/Therecanbeonlyone1969) raised the question regarding the max time duration to fulfil a call, especially for time-sensitive txns, and another regarding the time frame of finalityDelaySeconds. - [Elizas Tazartes](https://github.com/Eikix) raised the question regarding the relationship of storage proof & state root, and what exactly the storage proof tries to prove. - Another suggestion on the finality delay is to include values boundaries as an indication to the wallets. - Areas need further exploration: Standardization of the pieces needed for the proofs - Unified way of exposing a trusted L1 block hash/ state root on L2 - Standardize where state roots live on L1 - Common way of describing pending vs finalized state roots on L1 ## L1 & Pectra updates - Presented by [Ansgar](https://github.com/adietrichs) ![pectra](https://hackmd.io/_uploads/SkW6_yml1e.png) ## Other discussion - Breakout on the Future of the EVM on L2 - Link: https://github.com/ethereum/pm/issues/1171 - Date: Oct 23rd 14-15 UTC - Topic: Update on the thinking around Rollcall, broader RIP process, the future of EVM on L2 (will be presented by [Ansgar](https://github.com/adietrichs) & [Carl](https://github.com/CarlBeek)) - Breakout on the L2 transaction fee API specs - Date: Oct 30th - Topic: L2 transaction fee API specs (will be presented by [Andreas](https://github.com/Therecanbeonlyone1969))