From CIC website it says exactly this:
For proof, you must get official letters from any banks or financial institutions where you are keeping money.
Letter(s) must:
- be printed on the financial institution’s letterhead
- include their contact information (address, telephone number and email address)
- include your name
- list outstanding debts such as credit card debts and loans
- include, for each current bank and investment account:
- account numbers
- the date each account was opened
- the current balance of each account
- the average balance for the past six months
