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XENLOOK C2PA验证

试点·C2PA 审核中 · 韩国 2027.03 · 日本 2027.06 · 模范法为韩国法

版权 C-2026-036487 · 专利申请 10-2026-0100026（尚未注册）

法律与政策 →
Course contents
Chapter 7 of 10

Chapter 7A practice certificate is not a real one

In this chapter your mentor demonstrates issuing a real certificate. You put a practice (SAMPLE) certificate and a real one side by side, and learn why a technical score of A+ and the official trust level are different things.

  • Official session name · Integrated path test: SAMPLE vs real issuance
  • 5 practice steps
  • Some steps need you to sign in
What you will learn in this chapter
  • You can explain the difference between a SAMPLE certificate and a really issued one in a table.
  • You know that the technical score (A+) and the official trust level are different.
  • You know which parts of real issuance a trainee does not do.

The idea in plain words

Like a cooking contest score and a hygiene certificate
A restaurant's food can score A+ in a tasting, but it can only show a hygiene mark after a separate inspection by the designated body. The technical score A+ is the tasting score — “every step was done well.” The official trust level is the hygiene mark — “listed by a recognized body.”

A SAMPLE certificate is the practice certificate the practice page shows. Its serial number starts with XPC-DEMO-, and it is not added to the official issuance record (the issuance registry). The card itself says “Demo sample certificate · not proof of a delivered service.”

A really issued certificate is signed by the pilot certificate authority and registered in the issuance registry, so anyone can look it up publicly by its serial number (chapter 8).

A technical score (PipelineScore) of A+ means the file went through all five processing layers. On the practice page any file you put in gets an A+. So an A+ does not mean the file can be trusted.

The official trust level (TrustLevel) says whether the certificate authority that signed is on the international official trust list. This site is currently “pilot · not listed.”

Mixing the two, as in “A+ officially certified,” is an exaggerated claim. It can cause legal problems and harm the company's name, so the two are always stated separately.

Real issuance handles secret keys and operating records, so only the mentor does it. Trainees watch the screen and do not touch the admin screens or the keys.

See the picture

  1. SAMPLEpractice · not registered
  2. Real issuancementor demo · registered
  3. Technical scoreA+ = steps passed
  4. Trust levelpilot · not listed
The left two answer “what kind of certificate is it”; the right two answer “what was evaluated.” Keep all four apart.

Try it yourself

Work from the top, one step at a time. After each step, check that your screen matches “What you should see.”
  1. Make the SAMPLE certificate from chapter 2 again and read the badge text and the technical score on its card.
    What you should see You see the text “Demo sample certificate · not proof of a delivered service” and an A+ score.
    Open the practice pageNo sign-inPartly in Korean
  2. On the certificate preview page, see which fields a real certificate contains.
    What you should see You see fields such as the issuer, the serial number and the validity period.
    Open the certificate previewSign-in needed
  3. Your mentor demonstrates real issuance. Watch the screen and write down what happens at each step. Do not touch the keys or the admin screens.
    What you should see A serial number starting with XPC-2026- is issued.
    With your mentor
  4. Make a comparison table. The rows are SAMPLE and real issuance; the columns are serial number format, registry entry, signer, technical score and trust level.
    What you should see The difference between the two rows is clear at a glance. The trust level is “not listed” for both.
    No sign-in
  5. On the limits page, find the explanation about scores and trust levels and copy it in one line under your comparison table.
    What you should see You found the explanation that the technical score is not an official certification.
    Open the limits pageNo sign-in
The part you do with your mentor · The mentor does the real issuance; trainees only watch. After the demo you check the differences between SAMPLE and real issuance in the comparison table together with the mentor.

Check your work

If you can answer “yes” to everything below, you have finished this chapter.
  • Can you describe how the serial numbers of SAMPLE and real issuance differ?
  • Can you explain why an A+ is not an official certification?
  • Do you know what a trainee does not do during real issuance?

Easy to mix up

  • Common misunderstandingIt got an A+, so it is an officially certified file.
    What is actually trueA+ is a technical score that means every processing step was done. The official trust level is a separate question.
  • Common misunderstandingA really issued certificate is on the international official list.
    What is actually trueThis site's really issued certificates are also signed by the pilot certificate authority, so for now they are not listed.

Review questions

  1. Question 1What does a SAMPLE certificate's serial number start with?Show answerHide answer
    XPC-DEMO-. A real issuance starts like XPC-2026-.
  2. Question 2The practice page gives an A+ to any file you put in. What does that tell you?Show answerHide answer
    That an A+ does not mean a file can be trusted; it only means the file went through the processing steps.
  3. Question 3Why must the phrase “A+ officially certified” never be used?Show answerHide answer
    It mixes the technical score with the official trust level and overstates both. The current trust level is pilot · not listed.

Key terms

Issuance registry
The official list that records every certificate actually issued.
Technical scorePipelineScore
A score for how many processing steps a file went through.
Trust levelTrustLevel
Says whether the signing certificate authority is on the official list.
Pilot
A trial stage of operation before the service runs for real.

Practice log

Print it and write by hand, or copy the same items into a document. Once your mentor has checked it, you are done.
Chapter 7 practice logA practice certificate is not a real one
Practice date
Written by
Mentor check
  1. The badge text and score of the SAMPLE certificate
  2. The steps you saw in the mentor's demo (in order)
  3. Your SAMPLE vs real issuance comparison table
  4. The difference between technical score and trust level, in your own words
  5. Questions you had during the demo