“Who you gonna believe” – as the comics say – “me, or your lyin’ eyes?” When it comes to politics, cognitive bias has always given citizens a strong push to believe “their side,” whatever the evidence to the contrary suggests. As disinformation swamps the internet, the problem has become much worse with lyin’ evidence that’s all too easy to believe. Increasingly, information is forged or manipulated. Convincing but fake, this disinformation fuels hyper-partisan hatred, bolsters conspiracy theories and undermines critical democratic institutions. But identifying disinformation is only one piece of the puzzle. What we need is a way to stop forged information entirely; a way to prove that content is original and legitimate.