Yes. Libgen/Sci-Hub have minimal metadata requirements. And they especially do not require ISBNs/DOIs because there are an incredible number of documents out there with neither one. It would be absurd to ban all pre-1970 books, and lots of journals to this day don't bother issuing DOIs.
creatonez · · focus · HN ↗
Can this actually be done without an ISBN or DOI number?
gwern · · focus · HN ↗