Every export is watermarked by shuffling the row order in a way unique to that download. On the Export Log, under Identify a leaked file, paste the record IDs from the recovered file in the order the file lists them (separated by spaces, commas or new lines) and click Identify. Sprwt recomputes the fingerprint from that order and shows the matching export(s) with their token, type, row count, date, user, email, IP and network. Cell values do not matter, only the order, so the match survives copies and re-saves; it fails if the rows were re-sorted ("No export matches that row order...") or if you paste fewer than two IDs.