In this paper, we present CERTIFY, a research project and software prototype focused on the issue of fake news on social media. We summarize the research in this area, and briefly discuss current actions taken by Facebook, Twitter, and YouTube to stop or slow down the circulation of fake news on their platforms and their shortcomings. Then, we present an overview of CERTIFY, a distributed framework and its architecture that connects end-users, fact-checkers, journalists, and social media platforms. By providing a comprehensive feedback to the reader, as well as aggregating experts and public participation, CERTIFY strengthens news credibility and public participation.