Rick Song recounts work at Square and starting Persona with Charles Yeh after seeing repeated identity-verification needs.Founder recollection; the business origin does not imply authorship of a later token.TIBBIR UNIVERSE THIS IS TIBBIR How to get TIBBIR Ribbit in numbers Connected clues Account archive Bridge & contracts On-chain research Connections Community The story Reading room Network map Timeline Findings Source library Conversations People & companies Open questions Export & reuse