Blaze accepts any government-issued letter, bank statement, electricity bill, water bill, gas bill, lease agreement. Whichever document you choose, make sure the document was issued less than three months ago and that your name is clearly visible.
Most banks provide documents proving address, contact yours. Examples of documents offered by banks are: invoice, statement of account, card sending letter, etc.
Send the document at https://blaze.com/en/account/documents/proof-of-address