Why not unspool a fresh roll before putting it in the camera and cut off the first few inches of film and inspect it to see if it has the scratches before developing. If no scratches, then develop it. If still no scratches then you know its the camera. Otherwise, you'll see its either on the film from the get go, or caused by developing.
You'd need to cut the last few inches not the first because the film is taped at the start.