Recent research by the Cambridge Centre for Alternative Finance has uncovered intriguing insights about Bitcoin‘s resilience in the face of major internet infrastructure disruptions. Utilizing over ten years of historical data, the study highlights cryptocurrency’s capacity to withstand large-scale breakdowns in the global internet web, bringing a fresh perspective to Bitcoin’s reliability.
How Does Bitcoin Handle Random Outages?
At the center of this study is Bitcoin’s impressive resilience against unexpected failures within the internet’s physical structures. The research simulated scenarios where a vast majority of international submarine cables, vital for digital communications globally, became inoperative. Results revealed that only the failure of 72% to 92% of these cables could potentially disrupt more than 10% of Bitcoin nodes—demonstrating its robust network stability.
A review of 68 real-life cable malfunction events over the past decade showed that almost 90% did little to hinder Bitcoin, impacting less than 5% of its nodes during each incident. For example, when several West African cables were cut in 2024, regional disruptions were evident, but the global node network of Bitcoin remained stable, reflecting its remarkable resilience.
Can Targeted Threats Undermine Bitcoin’s Stability?
Targeted attacks on critical submarine cables, however, pose a more significant threat. The study explored potential targeted disruptions on cables identified as “high-betweenness,” which are integral to international data flow. Researchers found that disabling just 20% of these vital cables could result in disruptions comparable to taking down nearly all global cables randomly.
Additionally, Bitcoin faces risks from hosting reliance. Large internet service providers and cloud firms like Hetzner, Amazon, and Google Cloud host many of Bitcoin’s nodes. A mere 5% reduction in capacity within these networks could severely affect connectivity, signaling a critical point of vulnerability.
However, the network’s increasing adoption of the Tor network significantly boosts its resilience. By 2025, over 60% of Bitcoin nodes utilized Tor, offering alternative pathways that enhance redundancy. With many relays located in Europe, which boasts strong fiber networks, Tor provides a crucial alternative for communication continuity amidst internet failures.
“Bitcoin survives massive random cable outages. Targeting key hosting providers could disrupt the network with minimal infrastructure damage,” concluded the analysis.
The findings underline Bitcoin’s complex but robust architecture, capable of withstanding various disruptions while protecting its integrity.
