In early November 2026, around Devcon and ethereum.org updates, researchers restated Ethereum’s quantum-resistance goals. Justin Drake floated an ambitious full transition by end-2028, while the Foundation roadmap still points near December 2029 across execution, consensus and data layers. Plans discuss hash-based signatures such as leanXMSS/leanSPHINCS and aggregation. This is network engineering planning, not a commercial product launch.

What it means: A post-quantum signature migration will hit wallets, custodians, L2s and enterprise stacks that sign Ethereum transactions. Greek firms with on-chain payments or tokenisation should track hard-fork timelines and key-upgrade requirements so they are not stuck on unsupported schemes. The dual 2028/2029 horizon shows researcher ambition versus the official target; planning should follow network decisions, not single quotes. This is not a recommendation to hold ether. For Greek businesses and public bodies this means a practical review of contracts, timelines and compliance duties, and it is not investment or legal advice. IT, finance and compliance teams should document owners, review cycles and fallback processes before wider adoption or a vendor change. For Greek businesses and public bodies this means a practical review of contracts, timelines and compliance duties, and it is not investment or legal advice. IT, finance and compliance teams should document owners, review cycles and fallback processes before wider adoption or a vendor change.

Read the original on ethereum.org / Devcon reporting

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