Vitalik Buterin Unveils ETH2030 Roadmap to Shield Ethereum From Quantum Threats by 2030

Vitalik Buterin published an ETH2030 roadmap targeting quantum risks to Ethereum's BLS signatures, KZG data availability, ECDSA account signatures, and zero-knowledge proofs, warning that Shor's algorithm could compromise these elliptic curve and discrete-logarithm-based systems, according to the document. The plan introduces six quantum-resistant signature schemes, 13 EVM precompiles including an NTT precompile at address 0x15, recursive STARK aggregation under EIP8141, and dual-signature attestations to enable phased validator migration before full fork activation at the I+ level, following the Ethereum Foundation's creation of a Post-Quantum Security team in January 2026 led by Thomas Coratger with $2 million in research prizes. ETH2030's post-quantum stack spans 46 source files across seven packages and passed more than 20,900 tests across 48 packages, and developers ran the system on a Kurtosis devnet on February 27, 2026, where blocks were produced and all new precompiles verified. The roadmap notes that quantum-safe signatures may raise verification costs from about 3,000 gas for ECDSA to around 200,000 gas, while KZG commitments for data availability are replaced with Merkle- and lattice-based designs that rely on hash security and ModuleLWE assumptions rather than elliptic curves, and cites a Metaculus estimate of a 20% chance that sufficiently powerful quantum computers arrive before 2030, with Buterin warning at Devconnect Buenos Aires that elliptic curve cryptography could fail before the 2028 U.S. election.