The Ethereum Foundation's Protocol Cluster published a Sept. 7 roadmap committing to a fully quantum-resistant Layer 1 by December 2029, with the Hegotá fork scoped around FOCIL and Frame Transactions as the first implementation milestone.
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Ethereum targets quantum-resistant L1 by 2029 in new roadmap
Ethereum's Protocol Cluster set a December 2029 deadline for a quantum-resistant Layer 1, publishing a roadmap Sept. 7 that spans five hard forks after the upcoming Hegotá upgrade. The commitment covers Ethereum's execution, consensus and data layers, each requiring different cryptographic changes.
"The Protocol Cluster is aggressively targeting a quantum-resistant L1 no later than December 2029," Fredrik Svantes, who leads protocol coordination at the Ethereum Foundation, said in a post on X. The target is treated as non-negotiable until at least January 2027, when quantum progress will be reassessed with external experts.
The roadmap assumes "Q-day" — when quantum computers could break conventional cryptography — could arrive as early as 2030, a deliberately aggressive assumption given that most credible estimates place it later. A minimum viable post-quantum (MV-PQ) milestone at a fork codenamed J* would provide temporary safeguards before full resistance at a later fork, L*. Reaching the deadline from Glamsterdam's planned Q4 2026 mainnet launch requires an average cadence of 7.2 months per fork, with development cycles overlapping across upgrades.
The timeline aligns Ethereum with migration targets set by Google, Cloudflare and Microsoft, which have flagged the mid-2030s as a critical window for post-quantum cryptography adoption. It also falls within the U.S. National Institute of Standards and Technology's transition plan, which calls for quantum-vulnerable algorithms to be removed from federal standards by 2035.
Hegotá narrows around two headliners
The Protocol Cluster's tier list for Hegotá, its first unified ranking of proposals for a single upgrade, rated only two of 62 EIPs as S-tier "must-ship" items. EIP-7805, known as Fork-Choice Enforced Inclusion Lists (FOCIL), would allow a committee of validators to force inclusion of valid transactions, reducing the influence of dominant block builders. EIP-8141, Frame Transactions, would make account abstraction native to Ethereum, splitting transactions into programmable frames for validation, gas payment and execution.
The tier list drew on 397 individual assessments from about 60 researchers and engineers across nine teams. Fifteen proposals received A-tier status, eight were placed in B-tier and seven in C-tier, while 28 were declined for inclusion and two remain unranked pending further evidence.
Frame Transactions are central to the quantum-resistance plan because they would let Ethereum support new signature schemes without requiring a separate hard fork for each change. The Foundation said Frames could eventually help Ethereum move away from secp256k1 keys, the current signature scheme for user accounts.
Post-quantum cryptography still evolving
Ethereum researchers are reconsidering which hash functions to use in post-quantum work. Earlier research favored specialized functions such as Poseidon for their efficiency in zero-knowledge proofs, but advances in binary-field SNARKs have made established functions such as SHA-2 and BLAKE more practical for proof systems, according to the Protocol Cluster.
The research does not rule out Poseidon or other specialized options, but shows Ethereum's post-quantum design is still evolving as proof technology improves. Account-level experiments have already begun — in June, Ethereum researcher Nico said users could add post-quantum protection through smart contract logic for about $0.07 per account using SPHINCS-based signatures.
The Protocol Cluster identified five multi-fork research arcs beyond quantum resistance: fast finality, privacy, state scaling and zkEVM. Privacy work is expected to begin with Hegotá through EIP-8250 (Keyed Nonces) and EIP-8272 (Recent Roots), which would allow private transactions to receive the same censorship-resistance guarantees as conventional Ethereum activity.
"Shipping post-quantum readiness early is the secure thing to do," the Protocol Cluster wrote. "It is the clearest signal we can send that Ethereum intends to exist 50, 100, and 1,000 years from now."
The Foundation will host a Reddit AMA on Sept. 16 at 14:00 UTC to answer questions about the Hegotá rankings and the priorities outlined in the two articles.
This article is for informational purposes only and does not constitute investment advice.
