I think folks attempting to build a unicorn could just do what nextdoor did -- require a modicum of proof of life -- but for clones of twitter, reddit, etc. Th

I think folks attempting to build a unicorn could just do what nextdoor did -- require a modicum of proof of life -- but for clones of twitter, reddit, etc. The idea that I might get in a fight with a robot or some state agent on -- gasp -- Hacker News... it makes me want to pull my hair out. I would happily receive a postcard with code once every few years to quasi-prove my location.