What Is Block Chain and How Does It Relate to the World Computer?

Jeffrey Toobin is a professor at am university of maryland. He teaches human computer interaction and has written a curriculum for students to learn about the emerging technology of block chain. In black chain, computers are tied together by cryptographically-secured blocks that can only be accessed through consensus from other nodes in the system. The information held on these blocks becomes part of what's known as decentralized leger technology or crypto currency.