Netbill is a business model, set of protocols, and software implementation for commerce in information goods and other network delivered services. It has very low transaction costs for micropayments (around 1¢ for a 10¢ item), protects the privacy of the transaction, and is highly scalable. Of special interest is our new certified delivery mechanism which delivers information goods if and only if the customer has paid for them. This paper discusses the design of the NetBill protocol and our World Wide Web (WWW) prototype implementation
Marvin A. Sirbu, J. D. Tygar