They are already doing it e.g. Sony. https://amateurphotographer.com/latest/photo-news/sony-announces-new-in-camera-authenticity-technology/ https://amateurpho

They are already doing it e.g. Sony. https://amateurphotographer.com/latest/photo-news/sony-announces-new-in-camera-authenticity-technology/ https://amateurphotographer.com/latest/photo-news/sony-annou... It needs a certificate issuance and validation system https://c2pa.org/ https://c2pa.org/