Postmodernism is a theoretical paradigm and a trend of social thought that emerged and prevailed in the Western world. It subverts the order of traditional Western values and the way of discourse and moves towards a theory and social-cultural trend of thought. Postmodernism appears in architecture, literature, music, painting, and technology and affects philosophical concepts, thinking context, and social value orientation. It emphasizes the diversity and fragmentation of the world and believes that the "centre" and authority are the products of traditional rationality. In the history of Western thought, there has always been a concept of universal unity that seeks to eliminate differences and seek common ground. Enlightenment thinkers and modernists have never given up the notion that "true knowledge must be universal and based on a certain metadiscourse." In the postmodern theoretical paradigm, the issue of eternity or universal basis has been opposed. Richard Rorty said: No eternal, neutral, trans-historical framework guides us. (Rorty, 1979) Rory emphasized the need to abandon the previous concept of classifying everything into a certain universality and move towards a postmodern philosophy. In the "Post-Modern Spirit", Foucault proposed the centralized norms that rejected unconditional acceptance of the traditional external authority. (An, 2001). 11Postmodernism abandons the emphasis on a central authority, identity, and certainty; it pursues pluralism, difference and uncertainty; it advocates a realistic and tolerant view of various value standards and theoretical disputes. This theory denies absolute ideas, transcendental settings, and ultimate values. It emphasizes going to specific history, publicizing individuality and subjective thinking, which has positive significance in emancipating the mind and emphasizing equality for all. S. Seidman agrees with the radical decentering of science. He proposed that social science knowledge bears the mark of civilization in a broad sense and the national culture as a part of it and bears the impact of its producers' more specific class, race, gender, or sexual orientation. Therefore, any attempt to establish a general theoretical proposition is deconstructed or revealed through its basic concepts and explanations to indicate the author's specific social position and interest. A decentralized view of social science emphasizes the practice of social science, moral and political significance. (An, 2001)
Postmodernism opposes the notion of centrality and absolute truth and insists on the proposition of uncertainty. In modernism, people are regarded as subjects and society as objects, and the cognitive ability of human beings is the inevitable logical process of understanding nature. From the perspective of postmodernism, it is wrong to use logic to summarize the world of life. In the lifeworld, human cognition is the same as human activities. Postmodernism believes that there is no permanent and universal value and has given up pursuing "ultimate truth". Truth is relative because the truth is constructed. Second, postmodernism criticizes "meta-discourse" and opposes "grand narrative". From the perspective of postmodernism, those basic categories in traditional philosophy, such as rationality, wholeness, wealth creation, and human liberation, belong to "meta-discourse" and "grand narrative". They are all on the dissolution list because they are all related to daily life. The scientific living language of different discourses exists in search of rationality. The modern era is embodied in the distrust of "meta-discourse" and "grand narrative", and its main task is to dispel them. Third, the postmodern transforms the function of knowledge and the power to dissolve understanding. Since the enlightenment, Western intellectuals have pursued universality, and their theories seek universal discourse power. Because knowledge has become a symbol of power in modernism, power constitutes the basis of social domination and is hidden in various cultural forms and social relations. (Foucault, 2002)
Counting from the birth of the World Wide Web in 1989, the Internet has a history of 30 years. Today, Internet development seems to have deviated from the original spirit of "equality and freedom." Internet giants such as Google, Facebook, Twitter, and Amazon have formed new "monopolies." It has become a monopoly marketing tool for a few large companies. Mainstream Internet platforms have enormous resources and monopolize the power of human information access. When facing the vast Internet information, human beings no longer can navigate autonomously. They can only rely on search engines passively, and search engines have become the gatekeepers of the Internet. When people visit the Internet, they will be censored and filtered by search engines. The same is true for news. People can no longer easily see the information they want to watch. Instead, news computing, push engines, and big data decide what news they want you to see. Under the guise of the report, the so-called intelligent recommendation algorithm is used to determine what news you can see. Similarly, social media controls people's behaviour and various types of private data on the Internet, and they are also misusing these data in multiple ways to achieve their commercial purposes.
The birth of Blockchain, first of all, as a decentralized postmodern philosophical discourse, is a transformative technology created by a cyberpunk.12 (Michaud, 2008)to resist the trend of continuous centralization and monopoly of the Internet. Blockchain technology has developed to cater to the philosophical context of postmodernity as an "inevitable appearance". Blockchain aims to reconstruct the current Internet virtual society. As McLuhan said, "We created the tools, and the tools, in turn, shaped us." The creation of Blockchain aims to solve the problem of increasing centralization of the Internet and realize genuinely free and equal cyberspace.
On the other hand, the application and penetration of the Blockchain have also profoundly affected the economy and modern human society. The currency revolution centred on the Blockchain has sounded the clarion call for economic and social reshaping through trust structure (using encrypted proof instead of faith). The Blockchain essentially constructs a kind of "system trust". Based on this new currency and trust system, Blockchain reconstructs the entire economic and social system, smart contracts become the pillar of the whole of an economic and social system, and decentralized autonomous organizations gradually rise.