Yeah we've kind of been using the block chain since the end of the 15th century. Something using public "double" book keeping to ensure data integrity across a

Yeah we've kind of been using the block chain since the end of the 15th century. Something using public "double" book keeping to ensure data integrity across a network (digital or otherwise) doesn't magically make that data a currency just because some Japanese guy's pet project became too popular for its own good =)