The Blockchain for your privacy

Soon new cyberattacks could endanger the internet (Russia could influence next U.S. election and false accounts publish fake news on Facebook) but the Blockchain could represent a tool able to defend users by manipulation.
Jim Preissler on Forbes conjectures if the Blockchain can actually verify and certify the authenticity of profiles and news sources preserving anonymity and privacy of them. At the moment it is just a hypothesis. However, if it will be true it could make better the internet experience of all the stakeholders.