Study: 72%–92% submarine cable failure required to impact Bitcoin network nodes

Chainthink

Release Time: 03/16/2026 05:11:22

BTC

$73,185.101.4%

Summary

A Cambridge Centre for Alternative Finance study on Bitcoin news reveals that more than 72%–92% of submarine cables would need to fail to affect over 10% of Bitcoin network nodes. Using P2P data from 2014 to 2025 and analyzing 68 cable failures, the research found that even 5%–20% failure rates at key bottlenecks could still cause significant disruption. Tor enhances network resilience by obscuring 64% of nodes. Most cable failures had less than a 5% impact, with no clear correlation to Bitcoin price movements. Network upgrades such as Tor adoption are helping nodes remain hidden and secure.

ChainThink reports that research from the Cambridge Centre for Alternative Finance shows that more than 10% of Bitcoin network nodes would disconnect only if approximately 72% to 92% of transoceanic submarine fiber-optic cables failed simultaneously; if a targeted attack were launched on critical cable bottlenecks, the critical failure threshold would be between 5% and 20%.

The study is based on P2P network data from 2014 to 2025 and 68 verified cable failure incidents.

The study also reveals that Tor enhances network resilience, with approximately 64% of Bitcoin nodes currently "invisible"; historical data shows that 87% of cable outage events affected fewer than 5% of nodes and showed almost no correlation with BTC price (correlation coefficient of -0.02).

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