In January 1999, Differential, Inc. posted an online draft version (0.9) of the annotated specification for the "Digital Receipt XML Data Type Definition." The document is available from the Digital Receipt Consortium Web Site.
The Digital Receipt Consortium "consists of representatives from various financial institutions, accounting firms, and software development companies (see the partial membership list below). The consortium is developing an open standard relevant to the electronic commerce and data interchange infrastructure. The standard will describe the content, creation, exchange, and management of digital receipts. Digital receipts will provide authenticated evidence of e-commerce transactions, much as paper receipts have done in the past. The digital receipt standard will address the issues of risk management, legal liability, and auditing for effective management of business-to-business transactions over the Internet." An initiative to accelerate the development of a Digital Receipt Infrastructure (DRI) for electronic commerce was recently announced by David Jevans, president and CEO of Differential, Inc. Kent Davidson, vice president of engineering at Differential, is currently working with members of the Trade Working Group of the Internet Engineering Task Force (IETF) on the Open Trading Protocol specification. 'Differential is working closely with this group regarding submission of DRI to the IETF to ensure that the Digital Receipt initiative incorporates IETF drafts for digital signing of XML'."
"Annotated Digital Receipt XML Data Type Definition." By Kent M. Davidson. Revision 0.9. [local archive copy]
Digital Receipt SDK Download (Early Developer Release 0.9).
[January 19, 1999] "Differential Announces Digital Receipt Infrastructure Initiative to Take E-commerce to the Next Level. Differential Initiates Industry Discussion on Digital Receipts at RSA 99." - ". . . announced an initiative for the accelerated development of a Digital Receipt Infrastructure (DRI) for electronic commerce. Differential's DRI initiative will allow corporations to track a broad class of enterprise transactions in a non-forgeable, auditable and notarized format. By implementing a digital receipt infrastructure, corporations and consumers will have definitive proof that electronic transactions and events have occurred. DRI also provides a standardized infrastructure for remote electronic auditing and real-time transaction assurance on the Internet with comparable levels of protection found in private networks."
[January 19, 1999] "Datum Inc Announces Support of Differential's Digital Receipt Infrastructure Initiative." - "DRI is an XML-based specification that allows corporations to track a broad class of enterprise transactions in a non-forgeable, auditable and notarizable format, which gives corporations irrefutable proof that electronic transactions and events have occurred. Datum Inc. has a long history in the timing industry with over 28 years of experience designing, manufacturing and marketing high precision time and frequency products."
See also: "Digital Signatures for XML." By Richard D. Brown (GlobeSet, Inc.). January 1999. "A syntax and procedures for the computation and verification of XML digital signatures is specified." [local archive copy]
See also (earlier version): "Digital Signatures for XML." From the IETF TRADE Working Group. Richard D. Brown, GlobeSet, Inc. November 1998. - "The objective of this document is to propose syntax and procedures for the computation and verification of digital signatures applicable to general XML documents." [local archive copy]
Contact: Kent M. Davidson