Statement 1 is correct: Aadhaar is a 12-digit unique identification number issued by the Unique Identification Authority of India (UIDAI) to all residents of India. Statement 2 is correct: Aadhaar is linked to the demographic and biometric information (fingerprints and iris scans) of the individual. Statement 3 is incorrect: Aadhaar is explicitly stated as a proof of residence and identity, but not proof of citizenship. Holding an Aadhaar card does not automatically confer citizenship rights.