Cryptographic touch
NFC 424 validates the physical object before any claim.
The demo explains why SUN, UID and tenant policy come before ownership, rewards or warranty. The buyer sees a verdict, not raw cryptography.
Public proofVisible: verdict, physical state and masked UID.
Private in nexIDPrivate: secret material, replay controls and tenant KMS.
Decision path
- 1Fresh tapRead SUN/UID from the real item.
- 2Tenant policyCheck replay, channel and batch rules.
- 3VerdictOnly then unlock claim, reward or support.
Business outcomeBlocks copy/replay before warranty, claim or reward activation.