As an innovative technology architecture, the block chain is compared to the Internet basic protocol TCP/IP in 1990s, and a new Internet based on the block chain is called a value network, and some people compare the block chain to a more specific SMTP protocol, and the Internet has realized information transmission and the Internet is transmitting information. It is well understood that our daily WeChat sends messages to each other, and the block chain transfers value, and further, the Internet achieves efficient transmission of information, and the block chain realizes the quantitative interconnection of value. The value transfer can be understood as: the subjective level, the Internet through the centralization of institutional guarantee records to complete the transfer of value, block chain through the intelligent contract to complete the value transfer. The intelligent contract is equivalent to the centralized organization, the intelligent contract is completed by the machine execution, and the central organization is ultimately executed by the human. In contrast, the machine efficiency is higher, the machine is not easy to make mistakes, the machine is more reliable, and there is no need to worry about artificial factors such as fraud. On the objective level, the Internet achieves the transmission and sharing of information. It is open and is WYSIWYG. What articles do you see on the web page can be copied, pasted, and saved directly. This brings convenience to information acquisition, but at the same time it creates a problem: how to authenticate information to whom? Because of the defects of the underlying mechanism of the Internet, the current Internet world is beset by copyright problems. The block chain technology has achieved a real breakthrough. If you create a specific content and write it in the block chain, you will create a unique encryption address that no one can change. In this way, you can prove that you have copyright in the content. In this sense, the block chain provides the value that the Internet can not provide. The Internet can only transmit information, while the block chain can transmit value. In the era of block chain 2, the financial sector will form a set of industry chain standards, so as to improve the efficiency of bank settlement and payment, and reduce the cost of cross-border transactions. In the era of block chain 3, the tentacles of the block chain will extend to all aspects of human life, such as block chain + government management, + medical treatment, + copyright, + charity, + medical treatment, and so on. The new trust system is established, and the efficiency of the whole social system will be greatly improved. We have reason to believe that with the development of block chain technology and the improvement of related infrastructure, the value range of block chain can be expanded continuously, and the future potential of block chain will be immeasurable.