This week, Don Tapscott and Alex Tapscott about their new book “Blockchain Revolution.” DisrupTV is a weekly Web series with hosts R “Ray” Wang and Vala Afshar. The show airs live at 11:00 a.m. PT/ 2:00 p.m. ET every Friday. Brought to you by Constellation Executive Network: Learn more about DisrupTV and Constellation Executive Network.