PQ-Vault: Provably Quantum-Safe Asset Custody for Unmodified Ethereum
PQ-Vault proves that Ethereum accounts with on-chain public keys cannot be quantum-safeguarded by sidechains alone, and proposes a smart-contract custody scheme providing post-quantum protection without protocol changes.
Summary written by editorial AI · Source link below
arXiv:2610.29230v1 Announce Type: cross Abstract: A quantum computer could recover the key of any Ethereum account whose public key appears on chain. We prove that no sidechain or bridge that leaves Ethereum's rules unchanged can protect such accounts: their funds must move into a contract whose release condition relies only on quantum-safe primitives. We design \emph{PQ-Vault}, a custody system for unmodified Ethereum combining this vault, a quantum-safe proof-of-stake sidechain whose checkpoi
Editorial Analysis
Organisations holding significant Ethereum assets should begin planning quantum-resilient custody strategies, as PQ-Vault demonstrates current sidechain approaches are provably insufficient.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
External link — opens at arXiv Crypto & Security in a new tab.
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