Patent ID: 7039616

Claim:
A method for proof of transactions in a digital network, especially on the internet, where the acceptance of a bid presented via a bid server comprises: a) a digital form is requested from the bid server by a customer's computer connected to the network, b) the digital form is transmitted from the bid server to the customer's computer and c) form data which comprises the data required for acceptance of the bid, are sent to an order acceptance server, wherein d) the form sent from the bid server to the customer's computer contains the network address of a transaction proof server, e) the form data are sent from the customer's computer to the transaction proof server, f) the form data are provided with a digital time specification, g) at least one check digit code is generated for the form data and the digital time specification, and this check digit code is encoded with a key to create a time signature, and h) the form data are transmitted from the transaction proof server together with the digital time specification and the time signature to the order acceptance server.