Check a RupeeCase certificate ID.

01What this checks

Three checks, all on this page.

1. Format. RC, then P01 to P11 or SI (the master certificate), the issue date as YYYYMMDD, six characters and a check character.
2. Check character. A Luhn check over the path, the date and the six characters. A mistyped or altered character fails it.
3. Name. With the name printed on the certificate, the ID is computed again from the name, the path and the date. A match means the ID belongs to that name.

02What it cannot check yet

A records lookup is planned.

These checks run in your browser. They show that an ID is genuine in form and consistent with a name, a path and a date. They cannot show that the test was passed: the ID method is published on the certificates page, so anyone could compute an ID for any name. RupeeCase logs every certificate with its ID when it is created; checking an ID against that log needs a lookup on the server, which is planned. Until then, treat a match here as a consistency check, not as proof.