Calls to decentralize the Internet have a compelling ring to them. As we noted previously, there are failure risks in having so much dependency on any given (logically) centralized platform, even when those platforms take advantage of the state-of-the-art in scalable and highly available distributed algorithms. But the issue is bigger than the technical question of how resilient the algorithms are. There is a broader issue of trust, and as we explore in this article, blockchains popularized by cryptocurrencies provide a path to decentralizing trust.