The last point, proof of personhood, should of course be done with parties :)<p><a href="https://www.epfl.ch/research/domains/irgc/spotlight-on-risk-series/using-proof-of-personhood-to-tackle-social-media-risks/" rel="nofollow">https://www.epfl.ch/research/domains/irgc/spotlight-on-risk-...</a>