Thử nghiệm · đánh giá C2PA · Hàn 3/2027 · Nhật 6/2027 · luật Hàn
Bản quyền C-2026-036487 · Đơn bằng sáng chế 10-2026-0100026 (chưa đăng ký)
Applied · try it yourself in the sandbox
Make a signature, put a provenance record into a file, and see how a changed file shows up. The certificate is a practice one, so mistakes are fine.
Chapters in this level
- Chapter 4
A signature tells you who made it
How does a digital signature prove “who”?Some steps need sign-inDoneOpen this chapter - Chapter 5
Trust links together like a chain
How can you trust the person who signed?Some steps with your mentorDoneOpen this chapter - Chapter 6
The stamp you see and the stamp you don't
If you shrink or re-save a photo, does the stamp stay?Some steps with your mentorDoneOpen this chapter