>This includes protection against misattribution.
What does the case law say on what counts as "misattribution"? If a paste the "BLOPER" signature onto a jpeg, did I commit a crime right then and there? What if I put a notice next to it saying "btw it's not actually Brendan Loper"? What if I took that image (with the notice), uploaded it for the whole world to see, then some guy cropped out the "btw it's not actually Brendan Loper"?
In this scenario it sounds like you're fine, and if there's confusion then the guy that cropped it out is the source of the problem.
This reminds me of the Helen Green David Bowie Gif image (https://dollychops.tumblr.com/post/107517113745/happy-birthd... ) that got changed, tweaked, cropped, distorted and distributed by humans without attribution in all sorts of places [0] over ten years ago. I recall Mediachain (which was later acqui-hired by Spotify to help address attribution and licensing) would talk about this problem and proposing blockchain ledger approaches to help validate a media files similarity to existing content and notification to the original artist of its use. Didn’t follow them closely, but Spotify saw some value in their attribution ideas.
[0]. https://www.newsweek.com/2016/09/16/digital-images-photos-gi...