JAN3 CEO Criticizes Bitcoin Quantum Security Proposal as Too Hasty: Blind Upgrades Could Trigger Computational Attack Risks

Odaily News JAN3 CEO Samson Mow posted on platform X, stating that the current response to the quantum computing (QC) threat to Bitcoin should not be rushed. If there is a blind and hasty switch from the existing signature mechanism to a post-quantum (PQ) scheme, it could instead expose Bitcoin to risks from classical computing attacks in the short term. PQ signatures could increase in size by 10 to 125 times, significantly reducing network throughput and potentially reigniting scaling debates similar to the "block size wars" of earlier years. Additionally, Samson Mow warned that some PQ schemes might carry potential backdoor risks. The quantum computing threat remains in the medium to long term (possibly requiring 10 to 20 years), and the more reasonable path currently is continuous research rather than hasty deployment. He also singled out Coinbase, stating that its wallet has quantum attack vulnerabilities due to address reuse, and suggested prioritizing the fixing of related infrastructure issues.