There are ways to check being introduced C2PA (Content Credentials). Camera adds a digital signature to the image and editing software them maintains the image including records of how it has been manipulated (edit made). As it's all certificate based AI images don't have the certificates.
https://contentcredentials.org using
https://contentcredentials.org/verify/
No image from camera to hand but example of one from years ago been through Adobe LrC and had edit credentials added (just to show the sort of info recorded and checked)
View attachment 9000
I have my camera add the certification to all my images and Adobe LrC maintains the certification and edit/manipulation summaries.
Sony additionally go a step further and embed 3D data from the sensor into the image and anybody questioning the photo can upload to Sony's verification site which will double check the embedded 3D data in relation to the image itself.
All driven to try and protect against AI generated images
Ian