Director Identification Number requirement: online provisional DIN and attested identity and residence proofs required for application. Application for allotment of a Director Identification Number requires online generation of a provisional DIN before physical submission. Form DIN-1 collects mandatory personal particulars, identity and residence proofs, attested photograph, and a declaration of non-possession of any other DIN. Proofs must be certified by an authorised attesting authority who must provide signature, full name, registration number if applicable, and seal; non-English/Hindi documents need certified translations. Date of birth on identity proof must match the application or be supported by additional attested proof. Special certification rules apply to applicants abroad and foreign nationals, who must enclose a certified passport copy.