I don't know how the Canadian consulate works, having never been to Canada myself, but whenever I have needed a 'carta de banco' it states how long the person has been a customer of the bank, the date the account was opened and the average balance within the last year. IIRC, when I got my US visa, some time in the ice age, I also needed to show copies of my last 3 bank statements. Luckily I have been a customer of the same bank since I was a minor
Things could be done differently nowadays, but it is the same with all other visas I have requested.