AI watermarking / C2PA
C2PA vs AI watermarking: what each tells you
Compare C2PA, AI watermarks, visible labels and AI detectors. Learn what each signal can establish, its limits, and what missing evidence means.
Free educational resources
Free C2PA, AI watermarking and Content Credentials explainers
An AI label, a watermark and a signed credential answer different questions. These short guides explain what each signal can show, where it stops, and how to check the file you share.
Read every guide here or keep a PDF. For practical document work, follow the PDF, PowerPoint and Keynote instructions, with references to Adobe, Microsoft and Apple. No signup required.
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Content Credentials / Digital provenance
Content Credentials, provenance and authenticity explained
Understand Content Credentials, digital provenance and content authenticity, then use a practical checklist to assess a signed file and its limits.
PDF EXPLAINER
PDF watermarking: visible labels and verifiable provenance
Learn how to add a visible PDF watermark in Acrobat, distinguish signatures from provenance, and check the file your recipients actually receive.
PRESENTATION EXPLAINER
PowerPoint and Keynote watermarks explained
Add repeating watermark text or a logo in PowerPoint and Keynote, learn the limits of slide layouts, and inspect your exported PDF before sharing.
Download the collection
Free, direct downloads. No email address or account required, and downloading does not subscribe you to anything.
- Complete resource pack (ZIP)
All four guide PDFs, the editable guide collection, and the presentation with PDF copies.
- Editable guide collection (DOCX)
All four explainers in one editable document.
- Guide collection (PDF)
Read or print all four guides together.
- Provenance presentation (PPTX)
An editable educational deck for PowerPoint. Keynote can import PPTX; check the imported layout. This is not a native .key file.
- Provenance presentation (PDF)
A fixed-layout copy of the presentation for reading and sharing.
Check the signed files
The PDF, DOCX, PPTX and ZIP files carry C2PA Content Credentials identifying the Encypher Official signing profile (encypher.official), not the public demo identity. Open the exact downloaded file in the public Encypher verifier and inspect signature, content integrity and signer trust results. A credential records provenance; it does not establish factual truth, ownership or legal compliance.
The ZIP contains the same individually signed documents offered above. Verify the archive itself, or extract it and check each document separately.
Editing or exporting creates a different file. Check that copy separately rather than assuming it retains the original credential. See the verification guide for how to read the results.