Podcast, Season 1 Podcast Episode 5 Mark ‘Rizzn’ Hopkins Interview Posted on November 21, 2017November 17, 2018 by Natasha Nakamoto 21 Nov Interview With Mark Hopkins – What Makes Blockchain Valuable? Into and outro voice over by Zach Lewis realnewscn.com. Natasha Nakamoto Podcast Episode 4 What is Bitcoin Mining? What Is A Bitcoin Hash?