Key Facts
Ethereum Foundation researcher Justin Drake said at Devcon 8 that he hopes Ethereum’s post-quantum and post-AI transition will be complete by December 2028, a year ahead of the Foundation’s published December 2029 target.
The Foundation’s own Sept. 7 roadmap set December 2029 as a self-imposed deadline for quantum resistance across Ethereum’s execution, consensus, and data layers, while warning that Q-day could arrive as early as 2030.
The Foundation plans to reassess the timeline in January 2027 with outside quantum experts, and the December 2029 date holds until then regardless of Drake’s remark.
Ethereum Foundation researcher Justin Drake said at Devcon 8 that he hopes Ethereum’s post-quantum and post-AI transition will be complete by December 2028, a year ahead of the Foundation’s published December 2029 target.
The Foundation’s own Sept. 7 roadmap set December 2029 as a self-imposed deadline for quantum resistance across Ethereum’s execution, consensus, and data layers, while warning that Q-day could arrive as early as 2030.
The Foundation plans to reassess the timeline in January 2027 with outside quantum experts, and the December 2029 date holds until then regardless of Drake’s remark.
How Drake’s Date Compares to the Foundation’s Roadmap
Why Ethereum Is Racing to Upgrade Its Cryptography
The Foundation’s blog post said the December 2029 deadline is fixed at least until January 2027, when the timeline will be reassessed with outside quantum experts. Drake’s 2028 target has not replaced that date in any published Foundation document.



