> At least there's a chance to prove the source was filmed with camera X, if its public key is known. To be fair, the only thing that can be proven is that it

> At least there's a chance to prove the source was filmed with camera X, if its public key is known. To be fair, the only thing that can be proven is that it was either filmed with that camera, or someone has extracted the private key from the device (or just tricked the signing chip to sign a custom data packet).