Dear aspirant,

It is quite hard to get the caste certificate without any of the blood relative's proof of caste certificate. You need the following to apply for one

The documents required for applying caste certificate are as follows:

1. Proof of identity (Aadhar, PAN, Ration Card, Student ID etc)
2. Proof of Address
3. Community certificate of either parents or siblings/ blood relatives.
4. Self declaration.

If you have your/ your father's school TC that has your caste mentioned in it, that also is accepted.

Hope this helps