Now that we're talking about a heisted copy; that would be as useful as a menu from a restaurant in Beijing. The only way to prove the copy was a real copy would be the legal release of the original. Full circle back to where we are.
Good enough. Anyone heisting the original would seemingly be rendering the document worthless, I agree. But copying the original & leaving the original in place would not necessarily render the original worthless because the “chain of custody” is not broken... And a copy would be worth more than a restaurant menu just like the inadmissible Monica Lewinsky tapes were valuable in their own right. No one ever proved they were “real”, they probably would not have been able to. They just used the information as leverage.