Trust is a very delicate concept. We trust instinctively, routinely and at times mindlessly in a wide variety of situations. It is the core foundation on which our relationships, our society is built on and very much our commerce. We have come to believe that to transact with you I should trust you. To verify our trust, we use intermediaries. For example, banks ensure that we deal with the right parties with sufficient funds. We rely on lawyers to ensure that our products are not copied or distributed by unauthorised persons. Hence generally, the use of intermediaries is complex, time-consuming and costly and carry many security risks.