Payment tokens designed for display on a consumer's mobile device include dynamic trust data (e.g., transaction history and/or token generation date) along with financial account information, enabling merchants to make an informed decision about whether to accept payment without communication with the central processing system, and also protecting the consumer's account information from theft. In particular embodiments, a displayed token is used for payment via one communication channel (i.e., the merchant's network) but tokens are flagged for expiration via a different network (i.e., a public wireless telephone network).