Ethereum Foundation Sets a December 2029 Deadline to Beat the Quantum Clock

The Ethereum Foundation has committed to making Ethereum (ETH) resistant to quantum computers by December 2029, treating the date as a fixed deadline rather than a research goal.

The Protocol cluster published that target alongside its scoring of 62 proposals for Hegotá, the hard fork after Glamsterdam.  Ethereum Fixes a Deadline It Cannot Schedule The Foundation wants Ethereum’s base layer to be quantum-resistant across execution, consensus, and data.

Its priorities blog says the network should plan for Q-day arriving as early as 2030. That target matches migration timelines independently set by Google, Cloudflare, and Microsoft. The Foundation acknowledged that it is front-running most credible forecasts.

“Planning for Q-day in 2030 is a deliberately aggressive assumption,” the blog reads. The cluster will treat the deadline as non-negotiable at least until January 2027, when outside experts help reassess quantum progress.