Researchers from several institutes worldwide recently developed Quarks, a new, decentralized messaging network based on blockchain technology. Their proposed system could overcome the limitations of most commonly used messaging platforms, allowing users to retain control over their personal data and other information they share online.
I don’t see how blockchain (in this case) adds any value over a federation like Matrix.
It adds value by helping convince clueless investors to give you money. I’m entirely serious. There’s a significant number of investors that think blockchain technology is a good thing. Doesn’t matter that it’s a terrible solution to practically every problem. The goal isn’t to be a good solution. The goal is to make money. They only need to convince a few clueless people to give them that.
This system is federated.
The blockchain means that you can access your encrypted messages even if your server goes down.
you and everyone can access those encrypted messages. You are the only one that can decrypt them, sure, but as others have already mentioned, the history of encrypted messages is almost as bad as the actual content.