I need urgent revision on translation:"para demostrar parentesco..."

Good morning,

I would greatly appreciate revision on the following English translation at bottom of a birth certificate:

Source text in Spanish reads:"PARA DEMOSTRAR PARENTESCO ART.115 DECRETO DE LEY 1260 OF 1970. ESTE REGISTRO TIENE VALIDEZ PERMANENTE."

Draft English translation:"THIS BIRTH CERTIFICATE IS ISSUED IN VIRTUE OF ARTICLE 115, LAW DECREE 1260 OF 1970, THIS ENTRY IS PERMANENTLY VALID".

Thanks in advance for your help.

Hi everyone, So far, I've come up with:

"...to show proof of parenthood."
"...to show kinship at request of ...."

"...to establish identity of a registrant...."
"...to establish legal paternity..." (not thrilled about this one)

Any help or suggestion will be great!
Thank you

"to prove parenthood/kinship" seems most appropriate here