Abstract: Systems and methods directed to a service that analyzes media and outputs an evaluation of the media based on inconsistencies within media and differences between source media and the media, are described. In one aspect, a media file may be obtained at a computing resource service provider. The media may be analyzed to generate media results that indicate inconsistencies within the media file and/or differences between the media file and corresponding source media registered with the computing resource service provider. An indication of a significance of the inconsistencies within the media file and/or differences between the registered source media and the media may be generated based on the media results. In some aspects, source media may be registered and one or more artifacts inserted into the media to enable more efficient comparisons of whether other media is consistent with the registered source media.