Ethlabs Proposes 2027 Target For Ethereum’s Post-Quantum Upgrade

Ethlabs has proposed making Ethereum (ETH) ready to withstand quantum attacks in 2027 and said it would withdraw its quick slots proposal from Hegotá, a planned network upgrade, to focus its resources on that goal.

The Ethereum Magicians forum post, published by user caspar on 11th November 2026 at 20:51 UTC, calls the plan pqai27. It sets out Ethlabs’ position and asks core developers to make the security target their priority.

Ethlabs says it will redirect its resources from quick slots, which would shorten the time between blocks, to its proposed security work. In its 17th September article, Ethlabs proposed moving to 10-second blocks from the 12-second interval, with any further shortening requiring tests and agreement. Its new post says it will instead work towards quicker slots in 2028.

Account protection before full capacity

Ethlabs separates its proposed security upgrade into two stages. The first would make the network’s consensus, the process for agreeing its transaction history, resistant to quantum attacks and give every user a route to a protected account. Running transactions with that protection at full capacity is a stretch goal for 2027.

For holders, that route would mean being able to migrate to an account using a quantum-resistant signature, the cryptographic proof that authorises a transaction. It would still require migration tools and wallet support, which Ethlabs includes in its plan.

Ethereum.org’s security guide, last updated on 23rd October 2026, explains that individual accounts could switch signature schemes through account abstraction, which lets accounts change how they authorise transactions. It describes quantum attacks as a future threat and says they are not imminent.

The Ethereum roadmap lists Hegotá for 2027 and includes frame transactions, a proposed transaction type that lets an account determine what makes a transaction valid. The page says this gives accounts a path to quantum-resistant signatures, while warning that the upgrade’s scope is not final.

Ethlabs also wants protection against threats from artificial intelligence (AI), which it calls plausibly post-AI. Its proposed approach combines cryptography resting on “as few assumptions as possible” with software hardened against AI models that search for bugs. It does not claim that protection against future AI capabilities can be proved.

The post says Glamsterdam, the preceding upgrade, should proceed as planned. A major unresolved choice is whether to adapt Ethereum’s existing consensus system for quantum resistance or move directly to a new design. Ethlabs says that choice needs further assessment.