Hello Student

To some extent the character certificate issued by all India Institute of Medical sciences and Delhi University are same. Character certificate obtained from Delhi University is signed by the principal and the chief administrative officer of the university university. And  a character certificate given by  AIIMS office of authority  is duly signed by the director of the institution. The format  is almost the same and language used in both of the certificates almost same, other than some substitute words has been used in the character certificate issued by Delhi University.

In general character certificate is issued by local administration after some verification by the local police station . Certificate issuing authority are the office of district magistrate, office of the superintendent of police or MLA or MPS.

Hope this helps.