Ethereum Foundation researcher Justin Drake has set an ambitious informal target of December 2028 for completing the network’s full post-quantum and post-AI transition. Speaking at Devcon 8 in Mumbai, Drake described the date as a hope rather than a formal commitment and said developers would need to deliver three additional network upgrades within roughly 24 months to reach it.

The proposed timeline sits one year earlier than the Ethereum Foundation’s existing roadmap, which established December 2029 as the deadline for achieving quantum resistance across the execution, consensus and data layers. That roadmap, published in September, remains in force and is scheduled for reassessment in January 2027.

Drake’s Remarks at Devcon 8

Drake told the conference audience that the goal is to finish the broader transition by the end of 2028. He framed the schedule around a compressed sequence of protocol changes rather than a single upgrade event.

The comments do not replace the foundation’s published protocol priorities. Drake had previously outlined related technical milestones, including production-ready leanVM technology targeted for 2027 and subsequent post-quantum deployments across Ethereum’s three layers in 2028.

Why the Earlier Date Matters

Ethereum currently relies on elliptic-curve cryptography for transaction authentication and validator signatures. Standard accounts use the Elliptic Curve Digital Signature Algorithm, while validators rely on Boneh-Lynn-Shacham signatures. Both systems could become vulnerable to sufficiently advanced quantum computers.

The foundation has stated that existing quantum hardware cannot break the network’s cryptography today. The planning focus remains on preparing the protocol before capable machines become available. Research published by Google Quantum AI in March estimated that attacking 256-bit elliptic-curve cryptography could require approximately 1,200 logical qubits, adding urgency to the migration timeline.

Drake’s reference to a post-AI transition introduces an additional security consideration. Artificial intelligence could potentially accelerate certain classes of attacks, although current systems are not described as capable of compromising Ethereum’s signatures.

Technical Path and Upgrade Cadence

Work centers on hash-based signature schemes considered more resistant to quantum attacks. Candidates include leanSPHINCS for transaction authentication and leanXMSS for validators. These are paired with leanVM, a verification system designed to aggregate larger post-quantum signatures efficiently.

An initial public-key registry would allow validators to register post-quantum keys alongside existing credentials. Later upgrades would expand signature verification and strengthen consensus protections. The foundation formed a dedicated Post-Quantum Security team in January 2026, led by Thomas Coratger, to coordinate the research.

Under the original September roadmap, at least five coordinated hard forks after the Glamsterdam upgrade would be required to reach full readiness by December 2029. Drake’s accelerated path envisions three upgrades in two years. A fallback of annual hard forks remains available if the faster cadence proves difficult.

External Scrutiny and Parallel Efforts

The foundation’s earlier 2029 deadline has drawn criticism from other projects. StarkWare CEO Eli Ben-Sasson previously described the target as too late and warned that schedules can slip. In October, the Starknet community backed research into operating as an independent post-quantum layer-1 network, reducing reliance on Ethereum’s timeline.

Recent delays to the Glamsterdam testnet, linked to gas-accounting and security issues, have complicated near-term scheduling. Successful testnet validation remains a prerequisite for mainnet activation of subsequent upgrades.

Implications for Accounts and Infrastructure

Previously used accounts expose public keys through transaction signatures, creating potential long-term risk if quantum capabilities advance. Developers are examining account abstraction proposals that would allow alternative signature schemes without forcing simultaneous migration of all users.

The January 2027 roadmap review will incorporate updated assessments of quantum progress and outside expert input. Until any formal revision is adopted, December 2029 remains the foundation’s published target for quantum resistance across all three protocol layers.