Digicash is mentioned. He also mentions bitcoin, "a fiat currency".

   https://youtu.be/P49CuntfNGk 9 minutes

   If that delivery is too flat for you, try

    https://youtu.be/0xZ4dHffdqw

   When To Kill Your Rulers. This is the short form synopsis version. Four
   minutes. There's a thirty minute version available that goes into
   excruciatingly torturous detail about the topic too.

   Rr