Blaze accepts any government issued letter, bank statement, electricity bill, water bill, utility bill, rental agreement. Whatever document you choose, please make sure the document is not older than 3 months, and your name is clearly visible.
Most banks provide documents that prove address, contact yours. Examples of documents offered by banks that may fit are: card statement, account ownership statement, the letter in which your card was sent, etc.
Send the chosen document at https://blaze.com/en/account/documents/proof-of-address