Well, the film print would be one way of confirming you have the original theatrical presentation. I lack the equipment to transfer something like that to a digital format, though.

I decided to do some tests to see if it would be possible to undo the edits in the blu-ray version using the french version. Since most of the edits are a single frame or only a handful of frames, it might be possible.

Here's a test I did to remove the censorship on the Betty Boop scene since it was only one frame.