Vitalik Buterin Proposes ‘Extremely Lean’ Ethereum with Near-Zero State Using ZK Proofs
Ethereum co-founder Vitalik Buterin has proposed a radical plan to make Ethereum much lighter and more scalable by shrinking its on-chain state to almost zero using zero-knowledge proofs.
Key Details of the Proposal
In a detailed Ethereum Research forum post titled “The Extremely Lean Chain”, Buterin outlined a two-step plan for “Extremely Lean” Ethereum.
Phase 1:
Validators will submit a single daily ZK-STARK proof instead of per-epoch balance updates. This reduces each validator’s on-chain state to roughly 6 bytes.
Phase 2:
Validators will use fresh anonymous keys daily, improving privacy and making the validator set unlinkable.
These changes aim to allow Ethereum to scale to millions of validators while keeping the chain extremely lightweight.
What is Lean Ethereum?
Buterin described “Lean Ethereum” as the network’s third major iteration, following the transition to Proof-of-Stake (The Merge). The long-term vision includes:
- Lean Consensus
- Lean Data (post-quantum features)
- Lean Execution (minimal, SNARK-friendly VM)
The goal is to make Ethereum more secure, decentralized, efficient, and quantum-resistant.
Timeline and Impact
Buterin estimates that implementing these major upgrades could take 3 to 4 years. He mentioned that the upcoming Hegota upgrade will likely be the last major fork before the full Lean Ethereum transition begins.
