The question of decentralization remains a complex and critical subject for the future of blockchain ecosystems. A joint analysis conducted by ARK Invest and Glassnode offers a rigorous technical assessment comparing Bitcoin, Ethereum and Solana through the lens of auditability, security, and governance. While the report ranks Bitcoin at the top, it highlights that each protocol makes distinct architectural trade-offs, positioning decentralization not as a binary state, but rather as a spectrum of technological nuances.
One of the study's fundamental pillars lies in the cost of accessing network verification. The figures reveal striking disparities regarding the hardware required to run a node: while a setup for Bitcoin costs around $289 and Ethereum approximately $730, the infrastructure needed for Solana climbs to over $21,000. This financial gap effectively limits individual participation on Solana, fostering an increased reliance on professional servers, in contrast to the resilience and accessibility observed in its predecessor, Bitcoin.
The concentration of validation power serves as another key indicator. While the Nakamoto coefficient offers an interesting metric, it requires careful interpretation. Bitcoin and Ethereum exhibit notable concentration within certain mining pools or staking services, though these entities are not monolithic blocks. Conversely, Solana shows a higher Nakamoto coefficient on paper, reflecting a different distribution of stake. Furthermore, network geography plays a decisive role: Bitcoin stands out for its massive use of the Tor network, offering better obfuscation and increased resistance to regulatory pressure or localized outages.
Beyond technical aspects, governance and ownership distribution illustrate divergent philosophies. Bitcoin maintains a decentralized decision-making process where no central authority can impose unilateral changes, whereas Ethereum relies on coordinated developer groups and Solana on a more vertical structure led by its foundation. Simultaneously, token holdings confirm a more pronounced dispersion for Bitcoin, a direct consequence of its proof-of-work mechanism, which forces miners to regularly liquidate their rewards to cover operational costs. These conclusions highlight that the quest for performance and scalability often leads to concessions regarding a protocol's native level of decentralization.