Catenaa, Friday, July 17, 2026- Ethereum’s decentralization may increasingly depend on geography as much as blockchain technology, with new research showing that nearly one-third of the network’s node activity is concentrated in the United States, a level of geographic clustering that could carry both operational and regulatory implications.
According to research published by the Cambridge Centre for Alternative Finance (CCAF), approximately 31% of Ethereum node activity is hosted in the United States, while roughly 39% is located across the European Union, excluding the United Kingdom. Researchers said the network remains globally distributed overall, but warned that concentration among jurisdictions and cloud hosting providers deserves continued monitoring.
The findings highlight a less-discussed aspect of blockchain decentralization: where the infrastructure actually operates.
Ethereum’s consensus mechanism is designed to tolerate failures across thousands of independent validators. However, researchers noted that if more than one-third of validators simultaneously become unavailable, the network can stop finalizing checkpoints even though it continues producing blocks. Because validators are distributed behind different nodes, the precise relationship between hosting infrastructure and validator concentration remains difficult to measure.
The study also found that Ethereum nodes are heavily concentrated among several commercial cloud providers, including Hetzner, Amazon Web Services (AWS) and OVHcloud, raising broader questions about infrastructure resilience beyond blockchain protocol design.
Official research from the Cambridge Centre for Alternative Finance is available through, while technical information on Ethereum is maintained by the Ethereum Foundation.
The report also revives a legal debate that has followed Ethereum for several years.
In 2022, the US Securities and Exchange Commission argued in court filings that transactions on Ethereum could fall under US securities jurisdiction because a majority of network validation activity occurred within the United States.
While researchers described the current geographic distribution as relatively healthy, they emphasized that decentralization is no longer solely about validator numbers or software diversity. Physical location increasingly influences legal oversight, regulatory exposure and operational resilience.
The observation comes as governments worldwide continue expanding their oversight of blockchain infrastructure rather than simply regulating cryptocurrency trading.
The Cambridge research also updated Ethereum’s environmental profile following the network’s transition to Proof-of-Stake.
Annual electricity consumption is now estimated at approximately 7.9 gigawatt-hours, representing a reduction of roughly 99.98% compared with Ethereum’s energy use before The Merge in 2022. Researchers estimated that more than 56% of the network’s electricity now comes from sustainable energy sources, exceeding the current global average.
Those findings reinforce Ethereum’s transformation from one of the world’s most energy-intensive blockchain networks into one with comparatively modest operational requirements.
The Cambridge findings complement a broader institutional trend that Catenaa has tracked in recent weeks.
As reported in SWIFT Makes Blockchain Invisible to Global Banking, financial institutions are increasingly embedding blockchain into existing banking infrastructure rather than replacing traditional financial systems.
Similarly, Catenaa recently examined how SBI Holdings is building Asia’s on-chain financial ecosystem, while Japan’s stablecoin economy continues expanding through regulated payments and lending services.
Together, these developments suggest the next phase of blockchain adoption will increasingly focus on infrastructure, governance and operational resilience rather than transaction throughput alone.
Ethereum has long measured decentralization by the number of validators securing its network. The Cambridge research suggests another measure may be becoming equally important: geography. As blockchain networks become part of mainstream financial infrastructure, where nodes operate, which cloud providers host them and which legal jurisdictions oversee them may prove as important as the code itself. Decentralization is evolving from a technical concept into a geopolitical one.
Ethereum transitioned from Proof-of-Work to Proof-of-Stake during The Merge in September 2022, reducing the network’s energy consumption by more than 99%. Since then, institutional adoption of Ethereum has accelerated through tokenization, stablecoins and decentralized finance.
The Cambridge Centre for Alternative Finance periodically studies blockchain infrastructure, energy consumption and network decentralization to assess how public blockchain systems evolve as they become increasingly integrated into global financial markets. The latest report expands that analysis by examining both infrastructure concentration and geographic distribution.
