[wenc]

One issue is because there are so few CR cameras out there, most people would sign their photos in Lightroom. So the provenance starts from software rather than capture device.

So you can sign a fake photo that you modified and its provenance from that point on is traceable. But you still wouldn’t know if the photo was captured authentically.

I guess it doesn’t matter — this is about traceability rather than authenticity.

[lxgr]

In this use case, it’s arguably the other way around:

The point is to prove that the image was taken in the real world, to stakeholders that might not necessarily take your word for it otherwise.