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Vitalik Unveils Ethereum's Five-Year Roadmap: Focus on Post-Quantum Security, ZK-EVM, and Ultimate Resilience of the "World Computer"

2 hours ago

April 20, 2026 — On the opening day of the 2026 Hong Kong Web3 Carnival, Ethereum co-founder Vitalik Buterin delivered a keynote titled *The Future Direction of the Ethereum Protocol*, laying out a five-year technical evolution roadmap for the network. Buterin emphasized Ethereum’s core mission is not to compete as a high-frequency trading platform, but to become the world’s most secure, decentralized, and always-on “world computer” — a global shared layer ensuring user sovereignty, security, and verifiability. The roadmap is split into three phases: short-term milestones, mid-term state optimizations, and long-term protocol ossification, with a focus on quantum resistance, zero-knowledge proof verification (ZK-EVM), and protocol anti-fragility. For execution-layer scalability, short-term gains will come from Ethereum Improvement Proposals (EIPs) driving aggressive optimizations: these include a block-level access list to enable transaction parallelization, a revised gas pricing mechanism, and ePBS (execute block proposer separation) to support longer yet more efficient block validation. Node state synchronization improvements will also significantly boost download efficiency. Buterin highlighted EIP-8141 (Account Abstraction) as a key priority: the proposal redefines transactions as a series of calls, natively supporting smart contract wallets, gas fee delegation, and more complex privacy protocols at the protocol layer. On quantum security, Buterin noted quantum-resistant signature algorithms have existed for 20 years, but efficiency remains the main bottleneck: current quantum-resistant signatures are 2–3KB (vs. 64 bytes today) and cost ~200,000 gas on-chain (vs. 3,000 currently). Solutions will rely on hash-based signatures and a “lattice + vectorization” optimization scheme to cut resource overhead while maintaining security. State-layer scalability is the more challenging “deep end,” Buterin said. The mid-term roadmap will focus on optimizing the state tree and exploring alternatives that avoid permanent storage of the entire historical state to curb infinite state expansion. Looking ahead, he expects ZK-EVM to become the primary Ethereum chain validation method by ~2028, delivering single-slot finality in 10–20 seconds and enabling lightweight devices (like mobile phones) to independently verify on-chain data.
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