A new analysis of Bitcoin’s network infrastructure suggests that the cryptocurrency system is far more resilient to physical internet disruptions than commonly assumed. However, researchers warn that the network could face significant disruption if a small number of major hosting providers were targeted simultaneously.
The findings are based on a study analyzing more than a decade of Bitcoin network data, examining how failures in internet infrastructure—particularly submarine cables and cloud hosting providers—affect the cryptocurrency’s global connectivity. While large-scale cable outages appear unlikely to cripple Bitcoin, the research indicates that centralized hosting services represent a more realistic point of vulnerability.
Bitcoin Network Highly Resilient to Submarine Cable Failures
The study evaluated the impact of undersea internet cable outages using data covering 2014 to 2025, including hundreds of reported disruptions worldwide. Researchers found that even large-scale cable failures generally have minimal impact on Bitcoin’s global network.
In fact, modeling showed that between 72% and 92% of the world’s submarine cables would need to fail simultaneously before more than 10% of Bitcoin nodes become disconnected. Such a scenario is considered extremely unlikely because the internet’s physical infrastructure is widely distributed and includes multiple redundant pathways.
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Historical incidents reinforce this resilience. For example, when several cables were severed off the coast of West Africa in 2024, the disruption affected regional internet connectivity but had only a negligible impact on the Bitcoin network.
Real Vulnerability Lies in Hosting Provider Concentration
While physical cable disruptions appear unlikely to cause major damage, the research identified a more significant risk in the concentration of Bitcoin nodes on a small number of hosting providers and autonomous systems.
The study found that targeted disruptions affecting major hosting networks could disconnect a significant portion of Bitcoin’s visible nodes much more efficiently than random infrastructure failures. In some models, removing only 5% of routing capacity from key hosting providers could cause similar network fragmentation to that produced by widespread cable failures.
Among the major providers hosting large numbers of Bitcoin nodes are Hetzner, OVHcloud, Comcast, Amazon Web Services, and Google Cloud. If several of these providers experienced outages or coordinated shutdowns, the resulting disruption could significantly affect network connectivity and transaction propagation.
Tor Network Adds Additional Layer of Resilience
Another factor strengthening Bitcoin’s resilience is the increasing use of the Tor network, which allows nodes to connect through privacy-focused routing infrastructure.
Research indicates that a majority of Bitcoin nodes now operate through Tor, which distributes connectivity across additional layers of the internet and raises the threshold for large-scale disruptions.
This means that even if the publicly visible network were partially disrupted, many nodes could continue operating through Tor-based connections, maintaining the blockchain’s underlying functionality.
Infrastructure Risks Highlight Centralization Concerns
The findings highlight a broader debate within the cryptocurrency ecosystem about infrastructure centralization. Although Bitcoin’s protocol is decentralized by design, real-world infrastructure—such as cloud hosting providers and internet routing networks—can introduce hidden points of dependency.
Researchers note that these risks are not related to weaknesses in Bitcoin’s cryptography or consensus mechanism. Instead, they stem from the concentration of network infrastructure within a limited number of service providers.
As digital asset adoption grows, experts say improving geographic and infrastructure diversity among Bitcoin nodes could help further strengthen the network’s resilience against targeted disruptions.
About the author – Ayesha Aayat is a law student and contributor covering cybercrime, online frauds, and digital safety concerns. Her writing aims to raise awareness about evolving cyber threats and legal responses.
