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تجريبي · مراجعة C2PA · كوريا مارس 2027 · اليابان يونيو 2027

حقوق النشر C-2026-036487 · طلب براءة 10-2026-0100026 (غير مسجّل بعد)

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Learn C2PA content provenance in 10 chapters

Learn from scratch how to check who made a photo, video, song or document, when, and with which tool. Each chapter starts with a plain explanation. Then you try it yourself on this site.

Start with chapter 1Watch the intro film
  • Oct 15 – Dec 15, 2026
  • 10 chapters · a concept and a practice in each
  • Co-taught by an industry mentor and a faculty advisor

Intro film

About 54 seconds · no sound · Follow one photo to preview the flow of all 10 chapters.
Read the film as text
  1. Here is one photo. Who made it, when, and with which tool?
  2. A file has a fingerprint, called a hash. Change one spot and the hash changes completely. 63 of 64 characters changed.
  3. Five layers protect the source: hidden mark, trace mark, fingerprint, C2PA credential, archive.
  4. A signature tells you who made it. A trust chain tells you whether you can trust that signer.
  5. Shrink or re-save a photo, and some marks stay while others disappear. The hash changes, the C2PA credential is often removed, a hidden mark can weaken, and a fingerprint (look-alike) stays similar.
  6. A practice (SAMPLE) certificate is not a real one. A technical score of A+ is not an official certification.
  7. When you check a file for someone else, say what was confirmed and what was not. Confirmed: the signer, and no change since signing. Not confirmed: whether the scene is true, and what happened before signing.
  8. The 10-chapter C2PA practice course. Start with chapter 1.

How the course flows

You move in this order: learn, try, watch an issuance, then check.
  1. LearnChapters 1–3 · get the ideas
  2. TryChapters 4–6 · practice in a safe setting
  3. IssueChapter 7 · your mentor demonstrates a real issuance
  4. CheckChapters 8–10 · check and sum up
Each chapter uses what the one before it taught. That is why it is easiest to go in order, starting at chapter 1.

The 10 chapters at a glance

Each chapter answers one question. Select a card to open that chapter.

Three goals of this course

After ten chapters, you can do the three things below. Each goal leaves you with something you made.
  • Goal 1

    See how provenance attaches to each kind of content

    • Understand how a hidden mark, a file fingerprint and a C2PA credential attach to images, video, audio and documents.
    • Shrink or re-save a photo and run a short experiment: what stays, and what changes?
    You will makeA comparison table of provenance methods by content type, and a summary table of your alteration experiments
  • Goal 2

    Check it hands-on

    • Walk through learn, try, issue and check by hand, together with your mentor.
    • Look up a certificate by its serial number, and see whether the check fails when a file is slightly changed.
    • Practice sorting your findings into “what was confirmed” and “what was not confirmed.”
    You will makeA practice log for each chapter, and a summary of your certificate check results
  • Goal 3

    Plan ahead and write honest wording

    • Find out what it takes to get onto the international official trust list, and compare that with where this site is now (a pilot).
    • Look at the rules at home and abroad that ask for labels on AI-generated content, such as Korea's AI Basic Act.
    • Write sample wording that shares trust information without exaggeration.
    You will makeA gaps-and-improvements report, and sample trust-information wording

Practice rules

You practice on the live site, so please keep these six rules.
  • You practice in a practice setting (a sandbox) with SAMPLE practice certificates.
  • Real certificates are issued only while your mentor is watching.
  • The secret key (private key) used for signing is kept offline, in a dedicated security device (an HSM). Never touch it or ask for it.
  • Do not change any manifest or evidence material that is under review.
  • A signature only tells you who signed. It does not guarantee that the content is true.
  • Do not mix up the technical score A+ with the official trust level (for now: pilot, not listed).
An industry mentor (pipeline, PKI and watermark fields) and a faculty advisor teach the course together. You get feedback on your results from each step at regular reviews.

What you leave with

The notes you write in each chapter add up to your final deliverables.
  • Comparison table of provenance methods by content typeYou make it in chapter 3
  • Summary table of alteration experimentsYou make it in chapter 6
  • Practice logOne sheet for each chapter
  • Summary of certificate check resultsYou make it in chapter 8
  • Gaps-and-improvements reportYou make it in chapter 10
  • Sample trust-information wordingYou make it in chapter 10
The SAMPLE certificates and demo results in this course are for practice. This site's pilot certificate authority (CA) is not yet on the international official trust list (the C2PA Trust List).
Start with chapter 1Read more about the limits