Model of Claims

Hil all,

Rereading vc-data-model I'm getting ab bit confused and I would appreciate someone helping me understand.

In section 3.1 it seem that the claim is a graph. What confused me a bit is the statement that "To make the claim verifiable, more information must be added to the graph of information", because I would have imagined this graph being kind of the payload of the verifiable claim with a separation of the graph with the actual claim "Pat is over 21 and knows Sam, a student" from the statements making the authorship of this claim verifiable. Since nested graphs are not yet supported in RDF I wanted to look at the JSON-LD to see how this is solved (named graph or reification?).

The JSON-LD however confused me even more. Looking at the example 12 in section 7.2.1 there is the triple:

<http://example.gov/credentials/3732> <https://w3id.org/credentials#claim> <did:example:ebfeb1f712ebc6f1c276e12ec21> .

But I don't see any other triple describing <did:example:ebfeb1f712ebc6f1c276e12ec21>.  The JSON-Key "ageOver" doesn't resolves to a property. 

Shouldn't <did:example:ebfeb1f712ebc6f1c276e12ec21> be a named graph containing something: like :Pat :ageOver 21 ?

A side question: what is the URI scheme "did"? 

As you can see, I'm a bit lost...

Cheers,
Reto


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Received on Saturday, 21 October 2017 09:38:11 UTC