How it works
One diagram, three actors, one loop.
ISSUER WALLET VERIFIER
(university) (student's choice) (admissions office)
| | |
| -- delivers --> | |
| diploma VC | |
| | <-- asks for -- |
| | proof of diploma |
| | -- presents --> |
| | diploma VC |
| | verifies (ok)
- A credential is just signed JSON the holder carries.
- Delivery (issuer → wallet) and presentation (wallet → verifier) are the same simple exchange loop: POST, read what the server wants, POST back.
- That loop is the entire "VCALM delivery" surface — the part that competes with OID4VCI/OID4VP, and it's short.