Bitcoin Network Proves Highly Resilient to Submarine Cable Failures

A new study examining Bitcoin's exposure to failures in global internet infrastructure found that the cryptocurrency network remains highly resilient even when critical submarine communication cables experience disruptions.

The research, conducted by Wenbin Wu and Alexander Neumueller of the Cambridge Centre for Alternative Finance, analyzed Bitcoin's peer-to-peer network between 2014 and 2025 alongside 68 verified submarine cable fault events.

The study found that random failures affecting global internet cables would need to disrupt between 72% and 92% of inter-country network connections before causing significant disconnection across Bitcoin nodes.

Submarine cables carry the vast majority of international internet traffic, but despite this dependence, Bitcoin's distributed architecture makes it highly resistant to disruptions caused by cable faults.

The researchers modeled the system using a cascade framework to evaluate how failures propagate through interconnected networks. Their results indicate that Bitcoin's underlying architecture prevents most disruptions from spreading widely enough to fragment the network.