Vitalik: Moving L2 configuration to the chain will help realize universal lightweight clients

On October 20th, Vitalik Buterin replied to a netizen, saying: "For years, I have been talking about the need for (L1 and L2) lightweight clients. I think a solution will emerge when @NoahCitron Helios (or an alternative) creates a convenient javascript library to handle wallets that can be easily imported. In addition, it is important to move L2 configuration to the chain, as this will make it easier for lightweight clients to verify state proofs and make universal L2 lightweight clients possible."