They allow people generating fake images to sign them so that people believe they are human-generated.
Oh, sorry. I meant "They allow independent sources of truth to do the meticulous work of validating the pedigree of creations, so that with their cryptographically-secured seal you can be confident a human originated the content and a human authenticated it. Only after such work is done would a work be cryptographically signed as authentic."
You know, just like you can always trust the presence of an SSL certificate means a site is who they say they are. /s
Oh, sorry. I meant "They allow independent sources of truth to do the meticulous work of validating the pedigree of creations, so that with their cryptographically-secured seal you can be confident a human originated the content and a human authenticated it. Only after such work is done would a work be cryptographically signed as authentic."
You know, just like you can always trust the presence of an SSL certificate means a site is who they say they are. /s