JAN3 CEO criticizes Bitcoin quantum security proposals as too hasty: Warns that blind upgrades could trigger computational attack risks

According to Odaily, JAN3 CEO Samson Mow stated on the X platform that the current response to the Bitcoin quantum computing (QC) threat should not be rushed. He emphasized that blindly and hastily shifting from the existing signature mechanism to a post-quantum (PQ) solution could, in fact, expose Bitcoin to risks of classical computing attacks in the short term. PQ signature sizes could expand by 10 to 125 times, which would significantly reduce network throughput and could potentially lead to a resurgence of scaling debates similar to the "block size wars" in the early days of Bitcoin. Furthermore, Samson Mow warned that some PQ solutions may contain potential backdoor risks. The quantum computing threat remains a mid- to long-term concern (possibly requiring 10 to 20 years), so the more reasonable path at present is continued research rather than hasty deployment. He also singled out a certain exchange, pointing out that its wallet’s address reuse poses a risk of quantum attack and advised prioritizing the resolution of related infrastructure issues.