Ethereum sets 2029 deadline as quantum resistance becomes top priority

Ethereum's Foundation has made quantum resistance a top priority, aiming to harden the network before a quantum computer capable of breaking today's cryptography could plausibly arrive, and setting 2029 as the target for full protection. Upcoming upgrades will be judged against that clock, signaling a firm timeline for the previously incremental migration effort.

The plan extends earlier work, including a draft proposal to let validators deposit with quantum-resistant keys and gradually phase out the current key format. The target aligns with similar post-quantum roadmaps published by Bitcoin and the XRP Ledger as AI-assisted cryptanalysis accelerates the threat timeline.