Changpeng Zhao: Sign is a company in the YZi Labs portfolio

When Zhao Changpeng retweeted the tweet about "Sign launching SIGN, a blockchain technology stack designed for sovereign states," he said: "I may have helped a little bit in this matter. Of course, it was just a chat, no code was written. I made a few connections and introductions in several countries. Sign is a company in the YZi Labs portfolio (YZi Labs is a minority shareholder)."