DOSNs were introduced several years ago and their main goal is the preservation of the privacy of the users in such a way that the data and the content of a user are always under their control. BOSMs leverage the usage of blockchain either to enforce the privacy of the users or to redistribute the wealth generated by the platform through a rewarding system. Steemit is the most stable and well-known BOSM with more than 1 million registered users, where users can create their own Social Network by following other users. This talk will present the characteristics of decentralization and what DOSNs and BOSMs are by presenting existing platforms.

CV: Barbara Guidi is currently an Assistant Professor at the Department of Computer Science of the University of Pisa. She received her B.Sc. and M.Sc. in Computer Science from the University of Pisa, Italy, in 2007 and 2011, respectively. She received her Ph.D. degree in Computer Science from the University of Pisa, in 2015. In 2014, during her Ph.D., she was a visitor at the Heinrich Heine University of Dusseldorf. She was a Co-Chair for the conference EAI GoodTechs 2017, and Co-Chair of several workshops. She has been involved in the TPC of several International conferences and workshops, and has been a reviewer for relevant journals, such as IEEE Access, and Concurrency and Computation: Practice and Experience (CCPE). She received three Best Paper Awards: at the International Conference DCNET 2013, at the workshop LSDVE 2017, and at LSDVE 2018.