[jonah]

Yup, Canon as you mention, also Nikon, Sony, Panasonic, etc. The membership is pretty extensive.

https://c2pa.org/membership/

https://www.nikonusa.com/content/nikon-authenticity-service

https://authenticity.sony.net/camera/

https://www.msn.com/en-us/lifestyle/shopping/panasonic-is-th...