[CZ: Sign is a company in YZiLabs' portfolio] BlockBeats news, on September 23, CZ retweeted a post about 'Sign launching the blockchain technology stack S.I.G.N. designed specifically for sovereign nations,' stating, 'I might have helped a little bit with this. Of course, just by having some conversations, not writing any code. I made a few connections and introductions in a few countries. Sign is a company in YZiLabs' portfolio (YZiLabs is a minority shareholder).'