Hey Felipe,
Thank you for your interest in the Non Profit program! I’m sorry to bear the news that I am not a lawyer or anything like that, and don’t know with certainty what the specific document is for Canadian proof-of-status for Non Profit entities.
We have, however, approved many Canadian non-profits in the past, as well as ones from all over the world. In my experience, we’ve received documents that are basically like tax returns, showing no taxes were owed for that year because of non-profit status. So something like that, or any of the documents here except for the one about revocation of status would be sufficient → http://www.cra-arc.gc.ca/chrts-gvng/chrts/formspubs/menu-eng.html
It doesn’t have to be a specific form – just something that is:
• Real, i.e. not counterfeit – that’s a crime!
• From some level of the Canadian government
• Has your organization name
• Has some indicator of your non-profit status, like “0 taxes owed” on a return or a “non-profit application accepted” letter or something of that sort.
Does this information help? I hope so! Let me know if it does or if you have further questions.
Cheers,
George