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Meta engineer's sworn statement describes stripping ISBN and copyright lines; Meta's own expert puts uploads at up to about 30% of what it torrented in 2024
Two declarations Meta filed with its summary judgment papers describe its handling of pirate-library data. A Meta research engineer states that his team obtained LibGen for Llama 3 around spring 2023, taking the fiction and science collections by direct download and torrenting only the journal-article collection, with a script that removed finished files "typically within 60 seconds" to limit seeding. He states that a cleaning script removed rows containing ISBN, copyright, the copyright symbol, All rights reserved and DOI from the first and last quarter of each book file, and that there was no intent to hide anything. Meta's retained expert states that the 2024 torrenting of LibGen, Z-Library and Internet Archive data ran on Amazon cloud machines, and that Amazon's usage data shows uploads of no more than about 30% of the volume downloaded. Her later report gives 134.6 TB downloaded and 40.42 TB uploaded. She concludes that upload of complete, usable pieces of the plaintiffs' books was unlikely.
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