Wences Casares explains Xapo’s custody model to EconTalkRuss Roberts questions Casares about Bitcoin access, reliance on a custodian and Xapo’s approach to safeguarding customer assets.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