In a nutshell, Blockchain possesses a very special feature: the transmission of data does not require an intermediary to confirm the information. The Blockchain system has many independent nodes that can authenticate information without requiring a "sign of trust". The information in Blockchain cannot be changed and only be added with the consent of all nodes in the system. This is a high-security system against the possibility of data theft. Even if part of the Blockchain system collapses, the computers and other nodes will continue to protect the information and keep the network going.