KYC of Directors requires DIN, PAN, identity and address verification with mandatory attachments and professional certification. Form DIR-3-KYC requires directors to submit DIN, full personal particulars, PAN (mandatory for Indian nationals), identity and address details (Aadhaar, passport, voter ID, driving licence), OTP verification of contact details, and specified attachments. Directors must declare ownership of attached documents, absence of status as a proclaimed offender, and lack of any other DIN or DPIN; they must digitally sign and acknowledge liability for false statements. A practising professional must certify verification from originals (or attested foreign documents), confirm attachments, and sign, with criminal penalties indicated for false certification.