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As quantum ‘Q-Day’ jumps to 2029, Ethereum faces a new fight over what to do with coins left in old wallets

  • Gino Matos--CryptoSlate
  • published date: 2026-03-26 15:00:29 UTC

The crypto industry has framed its quantum reckoning as a single catastrophic “Q-Day” moment when a sufficiently powerful machine arrives, old cryptographic keys shatter, and blockchain history unravels. This week, that moment may have been brought forward in…

The crypto industry has framed its quantum reckoning as a single catastrophic “Q-Day” moment when a sufficiently powerful machine arrives, old cryptographic keys shatter, and blockchain history unrav… [+9502 chars]