TrustPaper for forged PDF with Issuer Fingerprints

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arXiv:2610.14132v1 Announce Type: new Abstract: Sick leave certificates are increasingly delivered as PDF files by online teleconsultation platforms, and can be altered in minutes with free editors. Generic PDF scanners report how a file was built, but cannot tell whether that construction is legitimate: an incremental update, an embedded font or a given producer string is normal for one issuer and anomalous for another. We present TrustPaper solution, an issuer aware forensic approach that com