A citizenship certificate is a document issued by the government in a given country that shows proof of citizenship in that country. Individuals who are eligible to apply for the citizenship certificate in their given country include those who obtained citizenship while residing in the country or those individuals who may have been born outside of the country but were born to citizens of that country. The criteria may differ a bit from country to country, but the certificate is the same as it shows that there is true citizenship present in this individual. This was developed so that citizens have a way of showing proof of their status as needed and can be used as an identification source as well.