A payment method and apparatus wherein a customer sends a transaction message from a customer account for a current transaction to a payment processor and to a supplier including a hash of transaction information from a previous transaction of the customer with the payment processor, a hash of transaction information from the current transaction and an encryption of transaction information for the current transaction including a state of the transaction. The transaction information from the current transaction along with the hash of the transaction information from the previous transaction is stored in a stream of transaction data in the customer account by the customer. The payment processor compares the hash of the transaction information from the previous transaction with a stored hash of the transaction information from the previous transaction to authenticate the customer.