Ethereum researchers propose quantum-resistant accounts by 2027, with higher transaction costs until scaling upgrades arrive.

Ethereum research group Ethlabs has proposed giving users a route to quantum-resistant accounts before Ethereum can process those transactions at full scale.

Its Nov. 11 plan would let users adopt the protection earlier, but their quantum-enabled transactions would cost more than ordinary transactions because they take up more space.

The proposal pqai27 targets readiness for quantum-resistant accounts and consensus in 2027. Full-capacity support is a stretch goal for that year, and the target remains a proposal.

At “pqai-ready,” Ethereum would have post-quantum consensus and every user would have a post-quantum route for their account. At “pqai-scaled,” it would support full-capacity quantum-enabled transactions and blobs, the data objects used by rollups.

The first stage would allow users to migrate to post-quantum accounts and transact with a larger footprint. Signature aggregation and post-quantum data availability would provide the later path to full scale.

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Ethlabs proposes readiness in 2027, with full-scale post-quantum transactions and blobs as a stretch goal. Users would still need wallet support and migration.

Rollups could choose PQ calldata at readiness. PQ blobs belong to the proposed full-scale stage.

Early protection would carry a transaction cost premium; full scale needs additional protocol work.

The 2027 goal is a proposal; full scale is a stretch goal. Wallet migration is separate work. The proposal supplies no numerical fee premium, and full-capacity support does not establish fee parity.

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