# EPF-5 | Week 2
This week collaborated with people building on Lodestar and and understanding Lodestar Architecture and deep diving about EIP-7657 and EIP-4881.
Gained basic understanding of EIP-7657. Understood EIP-4881 code of people who have been working on it and collaborated with them on how that can be integrated in Lodestar.Attended the EPF lectures and understood some of the concepts mentioned in it after the call. Went through some light clients codebase that have already implemented 4881 on surface level planning to deep dive into the same in the coming week.
## References
https://eips.ethereum.org/EIPS/eip-7657
https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/deposit-contract.md
https://ethereum-magicians.org/t/eip-7657-sync-committee-slashings/19288
https://blog.chainsafe.io/the-road-ahead-for-ethereum-light-clients/
https://archive.devcon.org/archive/watch/6/lodestar-metrics-driven-development/?playlist=Devcon%206&tab=YouTube
## Next Weeks Plan
* Deep dive into Lodestar codebase
* Get in touch with the mentor and start integrating EIP 4881 into lodestar
* Collaborate with fellow developers and plan out integration of 7657 after 4881.