New bounty added:
All people who contributed to the Cloak project.
Considering how ambitious of a project this was from the get-go (or at least, seemingly), somebody who lost a considerable portion of their investment will tweak enough to track these people down IRL. You heard it here first.
And just why would anyone bother to do that? I have invested 15 BTC in Cloak, but I have no urge to "track these people down IRL", what would that help me? Crypto is a gamble and I have been buying very cheap and very expensive, and I still hold most of my coins (90%) so what would it help me or anyone to find "them" (I assume you are referring to the devs)? The only thing that will help is if the devs continue their work.