I'm confused as to what you're getting at.

This is the cid of a picture add with with default settings.  https://ipfs.io/ipfs/QmcFkGWWv3m7FaMEdJ9LiPgb7it89sWojp6jqbD6kuftw6

And here is a cid of the same picture added with non-default settings https://ipfs.io/ipfs/Qmf6YT5GGrJ47Y7B73bN5dxgo2UGBJJYtS1Gtq91usZff1

You can download each of them via `ipfs get` just fine and there is no way anyone can trick you into downloading the wrong file. Again, I can't even convince you to download Qmf.. instead of Qmc... or vice versa.