Ledger CTO disputes 30% Bitcoin quantum risk estimate

Ledger CTO Charles Guillemet challenged the claim that only about 30% of Bitcoin is at risk from quantum computing attacks. He noted that public keys can be exposed through various means, including xpubs, devices, PSBTs, logs, and backups, rather than solely through spent on-chain outputs. Guillemet referenced Glassnode data indicating that approximately 30.2% of Bitcoin has spent public keys exposed on-chain. He also pointed out that public keys are revealed during Bitcoin transfers before transaction confirmations. He emphasized that if sufficiently fast quantum computers become available, merely hiding public keys will not suffice, and Bitcoin will need to transition to a quantum-resistant cryptographic system.

This content is provided for general informational purposes only and doesn't constitute financial, investment, legal, or tax advice. Any events, rewards, online promotions, or related information mentioned herein should not be considered a recommendation, solicitation, or invitation to purchase, sell, trade, or otherwise deal in any crypto assets. Crypto assets are highly volatile and may result in loss. The availability of WEEX services, products, and related events may vary by region. You are responsible for ensuring that your participation is in accordance with applicable local laws and regulations.