Validator Centralization

Validator centralization occurs when a large percentage of a blockchain network's stake or hashing power is concentrated in the hands of a few entities or data centers. This concentration creates a single point of failure, increasing the risk of network censorship, downtime, or coordinated malicious activity.

In financial systems built on these blockchains, centralization threatens the neutrality of settlement and the integrity of collateral management. It often stems from economies of scale, where larger providers can offer lower fees or better infrastructure than individual home stakers.

This dynamic is a critical concern for protocol security, as it contradicts the foundational goal of censorship resistance. Monitoring the Nakamoto coefficient is a standard way to assess the level of centralization within a network.