The GPO currently ensures the authenticity of the congressional information it disseminates to the public through its Federal Digital System and the Library Congress’s THOMAS system by the use of digital signature technology applied to the Portable Document Format (PDF) version of the document, which matches the printed document. The use of this technology attests that the digital version of the document has not been altered since it was authenticated and disseminated by GPO. At this time, only PDF files can be digitally signed in native format for authentication purposes. There currently is no comparable technology for the application and verification of digital signatures on XML documents.
At this point, however, the challenge of authenticating downloads of bulk data legislative data files in XML remains unresolved, and there continues to be a range of associated questions and issues:
Which Legislative Branch agency would be the provider of bulk data downloads of legislative information in XML, and how would this service be authorized. How would ‘‘House’’ information be differentiated from ‘‘Senate’’ information for the purposes of bulk data downloads in XML? What would be the impact of bulk downloads of legislative data in XML on the timeliness and authoritativeness of congressional information? What would be the estimated timeline for the development of a system of authentication for bulk data downloads of legislative information in XML? What are the projected budgetary impacts of system development and implementation, including potential costs for support that may be required by third party users of legislative bulk data sets in XML, as well as any indirect costs, such as potential requirements for Congress to confirm or invalidate third party analyses of legislative data based on bulk downloads in XML? Are there other data models or alternative that can enhance congressional openness and transparency without relying on bulk data downloads in XML?
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