Ethereum Foundation Sets December 2029 Deadline to Harden Network Against Quantum Computing

The Ethereum Foundation said on its official blog that it has set December 2029 as a binding deadline for hardening the Ethereum blockchain against threats from quantum computers, ArzDigital reported. According to the report, the date is being treated not as a flexible research goal but as a binding program tracked across the execution, consensus and data layers, so the network is ready before the arrival of advanced quantum computing. The timeline is based on estimates that so called Q day could arrive around 2030, which the foundation said aligns with assessments from companies such as Google and Microsoft. Data cited in the report shows about 65 percent of Ethereum's supply currently sits in addresses vulnerable to quantum attacks. The upcoming Hegota hard fork will serve as the first benchmark for the roadmap's progress, and the foundation said achieving full quantum resistance will require five consecutive hard forks spaced an average of 7.2 months apart, including phasing out the current cryptographic signature scheme and securing validators' withdrawal credentials.