Birth Certificate for I-485

Hi Sathiharu, I am applying for I-485 I asked Birth Certificate (BC) from Nepal but VDC Secretary gave in a general paper in VDC letter pad writing (TO Whom it my concern bla bla........including my parents name and my date of birth as a premenant resisent of ...( VDC name)of Nepal. But some of my friends told me that such a letter seems fake coz most of Nepalease people use the standard format (anusuchi 2 sth like) with nepali font and notarized by notary club. So if I submit letter pad version that too in all english USCIS officer might think is not authentic . So he/she knows what the format of Nepal BC is. I am kind of in confusion. Does any one has used letter pad BC for I-1485? Please share your ideas or experience.