Citizenship may already be available to you if you were born abroad to at least one Canadian parent. The citizenship application process does not require you to undergo the physical presence, knowledge test, or citizenship ceremony requirements if you are already eligible to become a citizen. A citizenship certificate is what you need instead of proof of citizenship. https://www.visaexperts.com/news/How-Do-You-Become-A-Canadian-With-Proof-Of-Citizenship.aspx