Form of Bank Confirmation Letter. A bank confirmation letter (BCL) is a correspondence between banks that confirms the existence of a valid line of credit to one of its customers.To whom it concern: The following account is open at Wells Fargo Bank and is in Good Standing. Name: Bank Account Name. Find out more about eCertify and place your order online. This letter is often required in various financial transactions and is an important document for both individuals and businesses. Sections 322.051 and 322.08, Florida Statutes, require that applicants provide proof of residential address documents to obtain a Florida Class E. Are you or someone you know out of work? We're not just the unemployment office. When submitting your refund application online, a confirmation page will be displayed with a confirmation number on it.