A senior U.S. military commander has described Bitcoin as a cybersecurity tool with potential use in national defense. Summary A U.S. military commander said Bitcoin can function as a cybersecurity tool, noting its proof-of-work design raises the cost for potential attackers. Lawmakers examined Bitcoin’s role in national security during a Senate hearing focused on Indo-Pacific threats and cyber risks from state-linked actors. At a Senate Armed Services Committee hearing on Tuesday, Samuel Paparo said Bitcoin’s role goes beyond financial use cases and can support security systems tied to U.S. strategic interests. “It is a valuable computer science tool, as a…