All other journalists who received the DVD's have complied with the t&c's imposed under Portuguese law. They are not able to reproduce the originals in any form & have to use their own words when reporting on any aspect within the files. That is the sheer cleverness of what Levy did - knowing the files could not be challenged online without Portuguese law being broken. Heaven only knows how he escaped prosecution.
Anyone with a copy can cross-check whether the on-line files are correct or not, so any significant error can be challenged.
I would find it amazing if the DVDs were restricted to Portugal. So any investigative journalist can have a look at the original.
The bulk of the files are in .jpg format, which is not easy to alter.
The rogs etc are in English, and can be checked by those involved in making the documents.
And Kate McCann claims to have an original.
I am not aware of any of these parties challenging the authenticity of the PJ Files we can see on-line.