Protect the emitter. Keep the message readable. Stop deceptive QR codes from wearing your name.
Patent Pending — authenticity for issuers, not encryption of the payload.
Try the DemoSeal matches a known issuer. This exact readable message was authorized by that emitter — safe to treat as regulated.
No seal, or an issuer you do not recognize. The message is still visible; it is simply not vouched for by a known emitter.
Looks sealed, but the tag does not match. Someone may have altered the payload after sealing — do not trust it as that emitter.
The payload stays cleartext. The seal only proves you authorized it.
Ask: did this emitter authorize this exact message?
King's Seal is not about hiding the message. It is about regulating who can put an official name on a QR code, so emitters are not blamed for deceptive or inconvenient links they never sent.
Three layers, like physical mail: personal trust, official seal, and caution for everything else. The payload stays readable. The HMAC tag only answers one question — did this issuer authorize this exact content?