TLDR
Ethereum co-founder Vitalik Buterin has presented a comprehensive plan to address one of the most pressing challenges in the cryptocurrency ecosystem: cross-chain interoperability between Ethereum layer-2 (L2) networks.* 7683 (cross-L2 sends via liquidity providers)
* 3668 (L2 light clients)
* Cross-L2-replayable account state updates* Keystore rollups
* Proof aggregation
