Vitalik’s 2026 Hong Kong Speech: A Complete Breakdown of Ethereum’s Five-Year Roadmap — Scaling, Quantum Resistance, and ZK Verification Advancing in Tandem Vitalik Buterin @VitalikButerin delivered a speech at the 2026 Hong Kong Web3 Carnival, outlining Ethereum’s five-year technical roadmap. The focus centers on short-term scaling and quantum resistance, medium-term state management optimization, and long-term ZK-EVM verification—aiming to build a decentralized, quantum-resistant, and easily verifiable world computer. I. Short-Term Goals: Scaling, Quantum Resistance, and Account Abstraction To address Ethereum’s current scaling bottlenecks and quantum computing threats, the following short-term technical upgrades were identified: 1. Data and Compute Scaling Enhance Data Availability: Continuously increase on-chain data publication capacity through solutions like Danksharding, while aggressively raising the Gas limit. Optimize Computational Efficiency: Introduce parallelized processing and Gas re-pricing (via EIP proposals) to improve node state download capabilities, ensuring compute scaling without compromising composability between applications. 2. Quantum Resistance and Account Abstraction Quantum-Safe Signature Algorithms: In response to quantum threats, plan to adopt hash-based or lattice-based signature schemes, optimizing efficiency through vectorization—reducing signature size from 2–3 KB and Gas cost from 200,000. Account Abstraction (EIP-8141): Native support for smart contract wallets, sponsored transactions, and privacy protocols by redefining transactions as call lists, enhancing Ethereum’s generality. II. Medium- and Long-Term Vision: State Management, Consensus Security, and ZK-EVM 1. State Management and Consensus Mechanism State Size Control: Acknowledge that state scaling is more challenging than execution scaling; require technical solutions to curb state storage growth. Maximize Consensus Security: Aim to tolerate 49% node failures during synchronous network conditions and maintain 33% safety under asynchronous conditions, pursuing “Lean Consensus” that combines availability with BFT advantages. 2. ZK-EVM and Lightweight Verification ZK-EVM Roadmap: Target secure ZK-EVM verification by 2024, and by 2028 make it the primary on-chain verification method, enabling single-slot finality (10–20 seconds). Lightweight Verification: Leverage ZK technology to enable lightweight nodes—such as smartphones and IoT devices—to independently verify on-chain data, breaking centralization in verification. III. Core Philosophy: Decentralization and Anti-Fragility Vitalik Buterin emphasized Ethereum’s foundational values that distinguish it from high-frequency trading platforms: 1. Anti-Fragility and Future-Proofing The “Walk Test”: Ethereum must be capable of long-term survival—even if the core development team vanishes—ensuring the protocol continues to operate securely without reliance on any single team. Formal Verification: Use AI-assisted generation of mathematical proofs to formally verify long-term Ethereum software versions, guaranteeing predefined security properties. 2. The World Computer Vision Global Shared Layer: Position Ethereum as a globally shared layer for data publication and rule execution, ensuring provable existence or non-existence of data to safeguard user sovereignty. Application Ecosystem Vision: Strive to become the foundational infrastructure for high-value decentralized applications—including DeFi, social networks, identity, and prediction markets—by default providing security and verifiability.