Centralized Trust in Decentralized Systems: Unveiling Hidden Contradictions in Blockchain and Cryptocurrency

TL;DR

This paper interrogates the centralization–decentralization paradox in blockchain and cryptocurrency ecosystems by combining 13 semi-structured interviews with a large-scale Reddit content analysis (over 3,000 posts). It finds that users rely on centralized anchors (exchanges, key figures, development teams) despite decentralization rhetoric, driven by a need for accountability and ease of self-custody. The study highlights barriers to adoption (technical complexity, interfaces, education gaps) and calls for hybrid trust models, transparent evaluation metrics, and user-centered design to reconcile decentralization ideals with practical usability and inclusion. The findings have implications for how future blockchain systems balance security, privacy, and usability while maintaining core decentralization principles.

Abstract

Blockchain technology promises to democratize finance and promote social equity through decentralization, but questions remain about whether current implementations advance or hinder these goals. Through a mixed-methods study combining semi-structured interviews with 13 diverse blockchain stakeholders and analysis of over 3,000 cryptocurrency discussions on Reddit, we examine how trust manifests in cryptocurrency ecosystems despite their decentralized architecture. Our findings uncover that users actively seek out and create centralized trust anchors, such as established exchanges, prominent community figures, and recognized development teams, contradicting blockchain's fundamental promise of trustless interactions. We identify how this contradiction arises from users' mental need for accountability and their reluctance to shoulder the full responsibility of self-custody. The study also reveals how these centralized trust patterns disproportionately impact different user groups, with newer and less technical users showing stronger preferences for centralized intermediaries. This work contributes to our understanding of the inherent tensions between theoretical decentralization and practical implementation in cryptocurrency systems, highlighting the persistent role of centralized trust in supposedly trustless environments.