Ethereum Foundation AMA Highlights Quantum Resistance Progress and Challenges Ahead

The Ethereum Foundation's Protocol team held an AMA on Reddit to discuss their progress on scaling, privacy, post-quantum security, and other key areas of development. One major focus area is quantum-resistant Ethereum L1, which the team aims to achieve by December 2029. This involves coordinating across multiple layers of the chain, including user accounts, consensus layer, and data availability layer.

Frames, a programmable transaction validation logic, will allow users to move their accounts away from control by secp256k1 keys and update signature schemes in the future. However, there is still a significant gap between supporting new signature schemes and making them affordable and practical. ECDSA signatures require approximately 4,000 gas, while SPHINCS+ quantum-resistant signatures need between 100,000 to 250,000 gas.

Researchers are also exploring ZK-EVM (Zero-Knowledge Ethereum Virtual Machine) which is converging with L1-quantum-resistant migration. Both approaches leverage RISC-V zkVMs, enabling shared investment in proof systems and optimization tools. Justin Drake is optimistic about real-time proofs, believing performance risks have been significantly reduced, but others emphasize engineering conditions that may alter the proof burden.

Formal verification is providing stronger security foundations for these changes. The team has already identified and fixed real bugs using formal verification, but end-to-end verification remains incomplete. Notably, this work is forming a more complete toolchain for automated research and performance optimization.