The Ethereum Foundation has set December 2029 as the hard deadline for delivering a quantum-resistant Layer 1, formalizing one of the most ambitious security commitments in the network’s history and signaling that post-quantum cryptography will reshape Ethereum’s core architecture well before the end of the decade.
The Ethereum Foundation’s Protocol Cluster has published its first shared tier list for a single network upgrade, ranking all 62 Ethereum Improvement Proposals under consideration for the upcoming Hegotá hard fork. Around 60 researchers, engineers, and specialists drawn from nine Protocol Cluster teams submitted a total of 397 individual assessments, with teams holding live discussions to compare technical benefits, development costs, and potential conflicts before Hegotá’s scope is finalized.
The Foundation noted that the ratings reflect how members of the Protocol Cluster view each proposal, not a guarantee that all 62 EIPs will reach mainnet. Client developers, independent researchers, and the wider Ethereum community continue to evaluate which changes can realistically be built and tested within Hegotá’s development schedule. Execution client teams were also asked to rank their preferred Hegotá proposals by Sept. 10, adding another layer of feedback ahead of scope finalization.
Hegotá itself is currently positioned in Ethereum’s public roadmap for 2027, following the Glamsterdam upgrade planned for the fourth quarter of 2026. Only one feature, EIP-7805, also known as Fork Choice-enforced Inclusion Lists (FOCIL), is officially scheduled for inclusion at this stage. FOCIL would allow a committee of validators to publish lists of eligible transactions that block builders must include, with attesters able to reject blocks that improperly omit listed transactions, a design intended to blunt the influence of concentrated block-building infrastructure over transaction inclusion.
Beyond Hegotá, the Protocol Cluster’s second article, titled Current and Emerging Priorities, sets out long-running research tracks and commitments. Chief among them is the December 2029 target for making Ethereum’s base layer resistant to attacks from quantum computers. Fredrik Svantes, who leads protocol coordination at the Ethereum Foundation, said the cluster is “aggressively targeting” a quantum-resistant L1 no later than that date, framing the work as a multi-year cryptographic migration rather than a single hard fork.
Reaching that goal will require Ethereum to swap out the elliptic-curve signature schemes that currently secure every external account and smart contract for post-quantum alternatives. Hash-based signature schemes such as SPHINCS+ are widely viewed as a likely candidate because they rely only on the security of cryptographic hash functions, which are believed to remain hard even for future quantum machines. The trade-off is size: SPHINCS+ signatures are considerably larger than their elliptic-curve counterparts, which has direct implications for storage, bandwidth, and gas costs on-chain.
To size that trade-off, researchers have been running account-level experiments to estimate how much users would actually pay to migrate a wallet to a post-quantum scheme. In one configuration, signing every transaction with SPHINCS+ works out to roughly $0.07 per account, a figure that frames the upgrade as a manageable one-time cost rather than a prohibitive tax on everyday users. The same research direction is forcing a redesign of the validator deposit contract, since thousands of existing deposits are locked under the current signature scheme and would need a clean migration path before quantum adversaries become a practical threat.
That account-level work feeds directly into another of Hegotá’s most-debated proposals: native account abstraction. By making accounts into programmable smart contracts at the protocol level rather than at the application layer, Ethereum could let users rotate signature schemes without moving funds to a new address. A user who today holds a single secp256k1 key could, after native account abstraction lands, upgrade their wallet to require a quantum-resistant signature, or even a combination of classical and post-quantam schemes, in a single transaction.
Supporters argue this turns the quantum migration from a disruptive emergency into a routine wallet upgrade, since the contract account enforces whatever signature policy its owner configures. Critics point out that native account abstraction still needs careful specification around replay protection, gas payment, and key rotation before it can underpin a network-wide cryptographic transition.
With the December 2029 deadline now on the record, quantum resistance has shifted from a research curiosity to a scheduled deliverable, and the Ethereum Foundation’s latest round of Hegotá ratings shows the upgrade pipeline that will have to carry it there. Getting the world’s second-largest blockchain to a quantum-resistant posture by the end of the decade would set a precedent that few other major crypto networks are currently positioned to match, and it puts Ethereum on a collision course with a cryptographic transition that will define the next era of the crypto industry.
Beyond Ethereum, the quantum threat extends to nearly every major blockchain, and the exposure varies dramatically by architecture. A sufficiently powerful cryptographically relevant quantum computer running Shor’s algorithm could derive a private key from any exposed public key in roughly eight hours, putting an estimated $2.6 trillion in on-chain assets at theoretical risk across the industry. EVM-based chains are particularly vulnerable because they rely on BLS signature aggregation for consensus, a scheme that quantum adversaries can break with half the operations needed to crack standard ECDSA, and because their account-based model keeps public keys persistently visible on-chain rather than hiding them behind hash preimages like UTXO systems. Cardano’s extended UTXO design and its ongoing Plomin hard fork work offer one alternative path, while Solana’s EdDSA keys and aggressive 400-millisecond slot times create a different and arguably harder migration surface. Avalanche’s primary network is similarly exposed, with no post-quantum roadmap yet announced. If Ethereum holds its December 2029 migration deadline and ships a working STARK-based signature scheme, every L1 and L2 that anchors security to Ethereum inherits that protection by default, a cascade effect that could make 2030 the first year the majority of crypto settles onto genuinely quantum-resistant rails.