Ethereum Researchers Propose Quantum-Resistant Key Registry to Secure Network Share: BitcoinWorld Ethereum Researchers Propose Quantum-Resistant Key Registry to Secure Network Ethereum researchers, including prominent contributors Thomas Coratger and Justin Drake, have proposed a new design for a key registry that could serve as the first concrete step toward making the Ethereum network resistant to attacks from quantum computers. The proposal, reported by The Defiant, addresses a growing concern in the blockchain industry: the eventual ability of quantum computers to break the cryptographic keys that currently secure billions of dollars in digital assets. Why Quantum Resistance Matters for Ethereum Quantum computers, once sufficiently advanced, could theoretically break the Elliptic Curve Digital Signature Algorithm (ECDSA) and BLS (Boneh-Lynn-Shacham) signature schemes that underpin Ethereum’s security. This would allow an attacker to derive private keys from public ones, potentially stealing funds or disrupting validator operations. While large-scale, fault-tolerant quantum computers are likely years away, the Ethereum research community has begun proactive planning to ensure the network can transition smoothly before such a threat materializes. The Proposed Solution: A Post-Quantum Key Registry The research team’s proposal introduces a ‘PQ key registry’ (post-quantum key registry) that would allow validators to register new, quantum-resistant public keys while continuing to use their existing BLS-based keys for current operations. This dual-key approach is conceptually similar to issuing a more secure form of identification that is held in reserve until it is needed. The registry would be a smart contract on Ethereum that stores these new keys, ensuring transparency and decentralization. Two-Phase Transition Plan The transition is designed to occur in two distinct phases. In the first phase, validators voluntarily register their quantum-resistant keys. This phase imposes no immediate change to network operations. The second phase would be triggered once a supermajority of validators have registered their new keys. At