Question: can a canadian passport be used as proof of citizenship

Answer: No, Documents other than those listed above, including Canadian passports, are not considered as proof of citizenship, but a passport is issued only after review of other documentary proof, as noted above. Church-issued baptismal certificates and birth certificates issued by an authority other than a provincial or territorial government are also not proof of Canadian citizenship. Such certificates were common in Quebec, as the provincial government did not start to issue birth certificates until 1994.