Just thinking out loud here: I think it would require trusted sources (not necessarily a centralized authority) that have validate it and that you trust. You c

Just thinking out loud here: I think it would require trusted sources (not necessarily a centralized authority) that have validate it and that you trust. You can prove two balls are different colors to a colorblind person by having them show you two balls of X color and proving to them that you can differentiate them (watered down example), but it requires validated externalities (ex, you can see colors they can’t). Defining the external validators is the hard part.