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- Vitalik Buterin’s proposal introduces a universal light client to improve Ethereum’s L2 verification and decentralization.
- If implemented, this upgrade could strengthen Ethereum’s dominance while reducing reliance on centralized intermediaries.
Vitalik Buterin recently outlined Ethereum’s next major upgrades and long-term roadmap at a conference. As highlighted by Crypto News Flash in 2024, Buterin shared a forward-looking plan aimed at enhancing Ethereum’s scalability and decentralization.
His latest proposal addresses the growing complexity of light clients within Ethereum’s rollup-centric ecosystem. By leveraging Ethereum Improvement Proposal (EIP) 3668, Buterin envisions a more efficient and decentralized approach to verifying Layer-2 (L2) network states.
My preferred approach is an ERC similar to https://t.co/RwYNOuuEUM by which L2s can declare an onchain config contract that specifies how to verify state proofs (as a piece of EVM code)
So you can write a universal L2 light client that asks for proofs over a p2p network and then…
— vitalik.eth (@VitalikButerin) February 15, 2025
A Solution for Ethereum’s Growing Complexity
As Ethereum scales horizontally through rollups, developers have raised concerns about how wallets and decentralized applications (dApps) will efficiently manage multiple light clients without relying on centralized intermediaries.
As described in a motivation statement from Ethereum Improvement Proposals (EIP):
Minimizing storage and transaction costs on Ethereum has driven contract authors to adopt a variety of techniques for moving data off-chain, including hashing, recursive hashing (e.g., Merkle Trees/Tries), and L2 solutions. While each solution has unique constraints and parameters, they all share in common the fact that enough information is stored on-chain to validate the externally stored data when required.
To address these concerns, Buterin proposes an Ethereum Request for Comment (ERC) model similar to EIP-3668. This would enable L2 networks to establish on-chain configuration contracts, specifying the Ethereum Virtual Machine (EVM) code used to validate state proofs.
How the Universal Light Client Works
The proposed universal light client would function on a peer-to-peer (P2P) network, where it would request proofs and verify them using on-chain EVM code. This approach enhances efficiency and decentralization while reducing reliance on third-party intermediaries.
Ensuring Flexibility and Decentralization
To ensure flexibility, Buterin suggests using a byte-based proof format, allowing each L2’s proof verification function to interpret data as needed. This ensures that Ethereum’s rollup ecosystem remains adaptable and prevents any single entity from controlling verification processes.
What This Means for Ethereum’s Future
If the proposal is successfully implemented, this upgrade could strengthen Ethereum’s position as the dominant smart contract platform while maintaining its decentralized structure.
As of now, Ethereum is trading at $2,665.50, with a 1.25% decrease in the past day and a 1.42% increase over the past week. See Ethereum price chart below.
