Andrea Bartz

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What this report shows. A line means a matching record appears in a dated source: one or more of the 25 LibGen catalog snapshots (2015–2025), the 2022 PiLiMi index of Z-Library, later Z-Library catalogs (to January 2025), the Books3 file list, or the Internet Archive’s lending library (a nonprofit library, listed for comparison); each line names its source and date. It does not show that any person or company downloaded, copied or used a file or dataset. Copyright Office results are candidate matches to verify against the linked record, not findings of authorship or ownership, and “ISBN in Books3” is supporting, not conclusive. See the PDF’s Method and limits section, what a match means in plain English, or the Methodology for sources and matching.

Counts

Your editions on the timeline

Documented downloads above the line; our dated catalog snapshots below it; the bottom row shows how many editions under this name each snapshot listed. Hover a mark for the source.

Every catalog record

Grouped by title. Each line is one edition as the catalog records it (LibGen), one Z-Library record (PiLiMi or later), one Internet Archive lending-library item or one Books3 file name, with the snapshots that list it, its file IDs and MD5 checksums (every catalog entry combined into the line) and any candidate registration with the Copyright Office record.

Show only lines whose matched registration is dated before copying could have begun in a documented event (court record or the company's own paper)