> Doesn't the bitcoin blockchain provide the same service roughtime does, and without the centralized authority (cloudflare in this case) problem? Oh god, I ca

> Doesn't the bitcoin blockchain provide the same service roughtime does, and without the centralized authority (cloudflare in this case) problem? Oh god, I can only imagine the horror of trying to use Bitcoin as a public notary service. The whole point of an append-only data structure is that you can replicate it and if someone's node is being dishonest, they cannot do so silently. You'd be better off with something like Trillian (and/or Certificate Transparency; see https://wiki.mozilla.org/Security/Binary_Transparency https://wiki.mozilla.org/Security/Binary_Transparency for more). I wrote something in this vein called Chronicle: https://github.com/paragonie/chronicle https://github.com/paragonie/chronicle Main selling point? It's not a blockchain, but it solves a lot of the problems that cause people to point to blockchain solutions. My goal with Chronicle is to ween the industry off of poorly thought-out blockchain projects by demonstrating that they don't need a blockchain after all.