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The Ethereum Foundation has announced a strategic pivot for zero-knowledge Ethereum Virtual Machines (zkEVMs), emphasizing cryptographic security over additional speed optimizations, with a roadmap culminating in 128-bit provable security by the end of 2026.
Following breakthroughs in 2025—reducing block proving times from 16 minutes to 16 seconds and slashing costs dramatically—the Foundation declared real-time proving achieved. Now, attention turns to soundness: recent cryptanalytic advances revealed vulnerabilities in existing proof systems, making high-speed proving without robust security a potential liability.
A new blog post outlines three milestones:
– By February 2026: All zkEVM teams integrate with “soundcalc,” a standardized tool for measuring concrete security levels.
– By May 2026 (“Glamsterdam”): At least 100-bit provable security, proofs ≤600 kilobytes, and public explanations of recursion architectures.
– By December 2026 (“H-star”): Full 128-bit security, proofs ≤300 kilobytes, and formal soundness arguments.
This non-negotiable standard aligns with mainstream cryptographic recommendations, enabling formal verification and long-term resilience for mainnet-grade zkEVMs securing billions in value.
The shift underscores Ethereum’s maturation: stabilizing architectures for institutional trust while Layer 2 solutions handle scaling. It reinforces reliability amid growing tokenized assets and enterprise adoption, positioning Ethereum as a secure foundation for decentralized applications.
