Ethereum Foundation shifts zkEVM roadmap to 128-bit provable security targets for 2026

After a year-long push to cut zkEVM proving latency, block proofs on Ethereum fell from around 16 minutes to 16 seconds with a 45-fold cost reduction, and most mainnet blocks now verify in under 10 seconds. On Dec. 18, the Ethereum Foundation announced that real-time proving goals have been met and unveiled a 2026 roadmap that prioritizes 128-bit provable security, explicit proof-size caps, and formal verification of recursion architectures. The new milestones require all zkEVM teams to adopt EF’s soundcalc tool, reach at least 100-bit provable security by May 2026, and hit full 128-bit security with sub-300 kilobyte proofs by the end of 2026.