I am currently developing a decentralized messenger that might fit this description. I&#x27;ve developed Ensichat [1] as a messenger that works over Bluetooth and Internet, by sending messages peer to peer. At the moment, I&#x27;m adding additional functionality to this app as part of my Bachelor thesis (improved routing, and relays that hold messages while the destination is not reachable).<p>Does anyone have experience with DARPA projects, and if individuals can apply for it? (I&#x27;m not from the US)<p>Edit: My app does not use a blockchain because the data, bandwidth and power usage aren&#x27;t an option for mobile devices.<p>[1] <a href="https:&#x2F;&#x2F;github.com&#x2F;Nutomic&#x2F;ensichat" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Nutomic&#x2F;ensichat</a>