But how would it be proven that the file being hosted is the Copyrighted file? For example, say there are 100 files on a hosting site, and when they are XORed t

But how would it be proven that the file being hosted is the Copyrighted file? For example, say there are 100 files on a hosting site, and when they are XORed together they create a copyrighted file. Is this illegal? What about if there are only 99/100 files? Would it be considered illegal based on intent?