Is there a Global Justice XML Data Model (GJXDM) data registry?

Not at the moment. However, the ultimate intent of the XML Structure Task Force (XSTF) is to establish a Global Justice Data Registry capability. This would provide a single logical point of access to all GJXDM artifacts, including the GJXDM content, the schema releases, reference document schemas, tools, and additional capabilities.

These may be stored in a local repository or in multiple distributed networked repositories. The registry would be standards-based and present multiple interfaces (e.g. browser, Web services) to enable both users and other servers to access, navigate, view, and retrieve metadata from the GJXDM. The data registry may be implemented with commercial registry software, depending upon requirements and cost-effectiveness. The XSTF and the Office of Justice Programs (OJP)  are evaluating requirements and alternatives

OJP Website: http://www.ojp.usdoj.gov/