Yes, I'm working on software that will allow for verification of identity, among other things.

I don't call it proof-of-truth, because it doesn't guarantee truth on its own, it's just a tool to help (but it should be able to be about 100% correct for relatively simple stuff like identity).

We've been exploring the ideas around it for around two years now I guess, and we just finally started on the software itself. Here's more info on the overall goals of the project: https://wiki.peerverity.info/wiki/Main_Page