Spanish term (edited): levantada por el Ciudadano Oficial 1 del registro civil para lo cual expido

la siguiente constancia certificada de: the following certified record of:

No need for all caps.

Vital Records in AmE, as opposed to BMD: BrE/ Birth, Marriages(*) & Deaths, as (*almost) recorded at the GRO - General *Register* vs. Registry Office.

C. / Ciudadano : Honorary Mexican Title, so ProZ advice is to 'omit'.

Levantada translated as recorded might clash with constancia as a record.

No 1. in superiority rather than the district serial number of the Registry usualy counting, like courts of law or notarial offices, from the city or town center / centre outwards.

Not the number of the "registrar", but of the physical office or department.

I've answered this previously and explained why here:
https://www.proz.com/kudoz/spanish-to-english/law-contracts/...

I do however agree with Allegro's point about not translating "Registro Civil" as "Office of Vital Records" or along those lines.

It would be helpful to read the information before the beginning of the line. This "levantada" refers to an essential term or idea, which might be critical to accurately determining the rest of it.