Ethereum Targets Post-Quantum by 2028
At Devcon 8, Justin Drake set December 2028 for a post-quantum Ethereum, but that means three forks in 24 months, and Glamsterdam has stalled and may slip into 2027.

At Devcon 8 in Mumbai, Justin Drake set December 2028 for post-quantum Ethereum, a year ahead of the EF's formal December 2029 deadline. The plan requires three hard forks in 24 months, while recent intervals ran 7–14 months. Glamsterdam stalled after Sepolia: EIP-8037's gas repricing breaks eight contract invariants, affects 13 DeFi projects, and likely pushes mainnet to 2027. The cryptography is near ready—hash-based signatures, leanVM aggregation, real-time proofs—but assurance and release cadence are the bottleneck. A March paper estimates ECDSA breaks with under 1,200 logical qubits; Anthropic reported an AI-found attack on HAWK-256.

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