Bitcoin can survive 72% of the world's submarine cables being cut, but a targeted attack on five hosting providers could cripple it

A Cambridge study spanning 11 years and 68 verified cable failures found that Bitcoin's physical infrastructure is far more resilient than previously understood, with TOR adoption actually strengthening the network. What to know : A new Cambridge study finds that 72% to 92% of the world's submarine cables would need to fail simultaneously before Bitcoin's network suffers significant global node disconnection. While random cable faults have historically had negligible impact on Bitcoin, targeted attacks on key submarine chokepoints or major hosting providers could disrupt the network with far less damage. The growing use of TOR by Bitcoin nodes has unexpectedly increased the network's physical resilience, as relay infrastructure is concentrated in highly connected European countries that are difficult to isolate.