# The Application of Blockchain in Social Media: A Systematic Literature Review
## 1 Introduction  
Social media invoke digital platforms reachable by the internet and permit users to form and interact in virtual groups. People can easily share information, which greatly strengthens communication and contact. They can find old classmates and acquaintances, connect with novel groups, or find persons with similar attractions across political, financial, and geographic boundaries. Thus, social media enable millions of internet users around the world to exchange information. They deliver access to a massive data source on an incredible ratio [1; 2; 3]. However, there are certain limitations to social media. Academics, officials, and users have recognized several crucial problems, including massive control by limited firms, the publication of false content, discussions around restricted or unrestricted dialog, compromised confidentiality, and political restrictions [4]. Using private details on social media increases apprehension with respect to confidentiality and involves security issues. Netizens face considerable exposure to several kinds of attacks in light of the variety and particularity of the private materials exchanged on different sites [5]. Netizens can be exposed to a loss of privacy and control over their personal information. It is inexpensive to deliver news over a network, and quicker and simpler to distribute it via social media; large amounts of bogus content with deliberately incorrect articles form online for a variety of reasons, including to obtain economic and political advantage [6]. Researchers have discovered that fake articles are disseminated more quickly on Twitter than factual content by a considerable margin, that fallacious content is 70% more likely to be retweeted on Twitter than trustworthy content, and that it influences the first 1500 users six times as quickly [7]. These societal issues pose a substantial challenge in contemporary times. Manyresearchers have been working in this area in order to resolve these issues. Text analysis, labeling, artificial intelligence, and machine learning methods can be used to detect fake articles. However, recognizing the source of such news for liability purposes remains a major challenge for which no concrete method exists today. Several specialists have already started working on ways of responding to this problem by deploying Blockchain technologies in connection with social media. As an outcome, diverse entities have collaborated on developing prominent inventions towards obtaining a blockchain deployed on social media. In recent years, the decentralization of social services has been considered an opportunity to overcome the main privacy issues in social media, fake news, and censorship. Blockchain technology represents the most well-known decentralized technique today, and has been considered in developing the new generation of decentralized social platforms [8]. In the beginning, Blockchain was used only for Bitcoin; nowadays, however, it is being implemented on many other platforms and used for several different objectives [9]. The application of Blockchain in social media brings several benefits, including improved user privacy, bypassing of restrictions, and the possibility for participants to engage in cryptocurrency transactions through social media platforms [10]. Privacy protection is a very complex concept, usually referring to the protection of data that entities such as individuals or groups do not want to be known by outsiders. In a blockchain, a decentralized data repository is generated where critical information is secured, making it very difficult for anyone to crack the data [11]. For those in repressive regimes or where censorship is an issue, blockchains deployed in a social networking context offer the benefits of secure authentication while ensuring anonymity [12]. A transparent autonomous process can be implemented that allows connections to be verified by different participants [13]. Blockchains make it very easy for an entity to be tokenized and exchanged on the Blockchain.