And the tip part: when they ask for two pieces of 'proof', they mean some evidence that you have been residing in Canada. You do not need to 'prove' that you've been in Canada for every day in your residency obligation. Do not provide too much - just what they ask for. Don't overthink: provide what they ask for andno more (unless you have some very compelling reason to provide more, a case which should be rare).
Evidence that you've been living here. In my view, the simplest is employment, NOA and/or paystubs and the like - a couple of them should be fine. For those living and working (or studying) in Canada it's dead simple and one should not overthink it.
If it really makes you feel better to provide a couple things more than they request, fine - but recognise you're doing it for your own piece of mind and not for them.
Sorry, you're going to have to use your own judgment.
I repeat my comment from before that NOAs seems the most logical - as they will show if one has been living and working in Canada (for most applicants anyways). If for some reason you can't submit those - you decide what best demonstrates the situation.
