Bahrain Personal Number / Identification Card Number (CPR) — الرقم الشخصي.
Format: YYMMSSSSC (9 digits). A check digit (C) exists but the official
algorithm is not publicly documented; validation is format-only, matching
the Python upstream (idnumbers/nationalid/bhr/personal_number.py).
See docs/research/bahrain-cpr-checksum.md for the research record.
https://en.wikipedia.org/wiki/National_identification_number#Bahrain
Bahrain Personal Number / Identification Card Number (CPR) — الرقم الشخصي. Format: YYMMSSSSC (9 digits). A check digit (C) exists but the official algorithm is not publicly documented; validation is format-only, matching the Python upstream (
idnumbers/nationalid/bhr/personal_number.py). Seedocs/research/bahrain-cpr-checksum.mdfor the research record. https://en.wikipedia.org/wiki/National_identification_number#Bahrain