Vitalik: Ethereum will enter a "Lean Ethereum" phase, and the core protocol may undergo a comprehensive restructuring in the next 3–4 years.

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Mars Finance News, July 5 - Ethereum co-founder Vitalik Buterin stated that Ethereum researchers recently held a meeting in Berlin, continuing discussions from April in Svalbard with client teams, updating the long-term protocol roadmap. Buterin said that "Lean Ethereum" is not a single upgrade but a series of protocol evolutions that will be gradually implemented over the next 3 to 4 years, with an impact comparable to "The Merge" as the second major iteration, and the current phase may constitute the third major evolution. He pointed out that future core changes to Ethereum may include: replacing direct execution verification with recursive STARK verification, introducing quantum-resistant cryptography, adjusting the consensus mechanism to a decoupled availability chain and finality design, as well as a multi-dimensional gas model and state structure restructuring. At the state level, Ethereum may form a "dual-layer state structure" around 2030, including approximately 2TB of traditional dynamic state and about 100TB of new scalable state, to support expansion needs for different application scenarios. Buterin emphasized that privacy capabilities will no longer be an add-on feature but one of the core goals of protocol design, while the system will rely more on formal verification to enhance security, and promote the EVM to shift towards higher-level abstraction in the future, with the underlying layer potentially transitioning to RISC-V or leanISA architecture. Additionally, he mentioned that key parameters such as gas limit, blob capacity, and block time will be adjusted multiple times in the coming years, and Ethereum will continue to achieve scaling through client optimization and protocol upgrades. Buterin concluded that Ethereum is entering a phase of continuous restructuring and expansion, with the goal of completing underlying system upgrades without disrupting the existing application ecosystem.
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