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Bitfari is a Secure and Decentralized Network for Peer-to-Peer Advertising. Bitfari sits atop Bitcoin to create a civil network where users can publish, collaborate, self-organize, and pool resources all while acting anonymously.The system deploys the concept of an adaptive matrix of blockchain connected screens to display contextual real-world ads and information systems at the command of the citizens.

With Bitfari installed on your smartphone you could press a button and translate ads in the city to your native language, for example. You could also vote to block political ads, see products relevant to you without entering a store and, most importantly, place your own ads and calls for action allowing you to start a movement or recruit locals that can help you. Learn more about Bitfari in the following links: