I've posted a pull request for the JSON Schema and the work I've done so far. This request consists of: The JSON schema that validates the (modified) example instance files, and mostly supports the data of the CVRF 1.2 specification. Updated example instances, incorporating changes that met with agreement on this mailing list Notes on a few of the concerns identified, as well as design choices I made and that we made. A few errata on the existing specification document that I observed during my work. What is missing; I consider the schema "good enough" to start useful discussion about what next. However, I only did one pass through the CVRF specification to try to get the details correct. I'm sure I missed details that I intended to catch. I deliberately skipped over the "product group" and "product relationship" related content. Ideally, we could get a few more instances of XML document that uses these, and that will let us explore how to represent it. I also have concerns about the product tree, so I didn't spend a lot of time on this, as I see it as a place for considerable change. I don't have an implementation that parses the files to see if it presents any obvious challenges to the implementation of the schema. I have more to come. I have additional design suggestions to propose - presumably if not resolved over the mailing list, these will be fodder for discussion at the next meeting. Stay tuned for additional emails. Eric.