qaz

Yes, several large AI companies themselves are “watermarking” their images. https://www.nytimes.com/2024/02/08/business/media/google-ai.html

Camera companies have been working on this. They have been trying to create a system that makes it possible to detect if an image has been tampered with https://www.lifewire.com/camera-makers-authentication-prevent-deepfakes-8422784

However this signature probably just uses assymetric encryption which could mean that the signing key on the device could be extracted and abused.