TechFlow News, April 5: Samson Mow, CEO of JAN3, posted on X stating that the current response to the quantum computing (QC) threat against Bitcoin should not be rushed. Blindly and hastily migrating from existing signature schemes to post-quantum (PQ) alternatives could instead expose Bitcoin to classical computing attacks in the short term. PQ signatures may increase in size by 10 to 125 times, significantly reducing network throughput and potentially reigniting scalability disputes reminiscent of the early “block size wars.” Additionally, Samson Mow warned that certain PQ schemes may harbor potential backdoor risks. The quantum computing threat remains a medium- to long-term concern—potentially requiring 10 to 20 years—and the more rational path forward is continued research rather than hasty deployment. He also called out Coinbase, noting that its wallet poses quantum attack risks due to address reuse, and recommended prioritizing fixes to related infrastructure issues.
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