OCOP product certification marks: 3 and 4 stars

These marks are not covered by the MIT license of qrcode.vn or its reference
repository. They identify the corresponding recognized product; they do not
certify a shop, payee, bank account, QR code, payment or qrcode.vn itself.

The two local PNGs are exact decoded-pixel crops from the official 1162/2020
Appendix II. They retain the original letters, tagline and star geometry.
No star was added, redrawn, recolored or generated. The original is a scan,
not vector artwork or a color-production master. Source URL, hashes, crop
coordinates and display constraints are at /ocop-marks/provenance.json.

The feature is optional and off by default. The user identifies the specific
recognized product and effective validity date, and attests to authorization.
The application does not independently verify those assertions. The expired
mark is blocked for new generated exports; downloaded historical files cannot
be revoked. Use must follow the applicable recognition and trademark rules.

No national five-star logo or officially issued traceability seal is included.
No affiliation, blanket redistribution license or brand approval is claimed.