The conceptual issue here is that most attempts at denying the legitimacy of content are not by people who actually operate the given equipment.
If a celebrity claims some third party footage is fake, that celebrity is not the one that would vouch/not vouch for it. If a paparazzi does something wrong, they’d sign it and say “yes it’s authentic”.
Now maybe you can say “Canon genuine” to say it’s not the person, but the camera vendor, but again, with the right setup, you can good old analog feed doctored stuff into a legitimate sensor and get that signature.
Since the anchor for the signature almost never rests with the person who would ever contest the content, it’s of limited use.
Traditional signing is enough to say “If I trust the AP, then I trust this image that the AP signed”, no distributed ledger really suggested in this use case, since the trust is entirely around the identity of the originator, not based on consensus.
The conceptual issue here is that most attempts at denying the legitimacy of content are not by people who actually operate the given equipment.
If a celebrity claims some third party footage is fake, that celebrity is not the one that would vouch/not vouch for it. If a paparazzi does something wrong, they’d sign it and say “yes it’s authentic”.
Now maybe you can say “Canon genuine” to say it’s not the person, but the camera vendor, but again, with the right setup, you can good old analog feed doctored stuff into a legitimate sensor and get that signature.
Since the anchor for the signature almost never rests with the person who would ever contest the content, it’s of limited use.
Traditional signing is enough to say “If I trust the AP, then I trust this image that the AP signed”, no distributed ledger really suggested in this use case, since the trust is entirely around the identity of the originator, not based on consensus.