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Re: Definition of claim

From: David Chadwick <d.w.chadwick@kent.ac.uk>
Date: Mon, 13 Jun 2016 08:57:57 +0100
To: public-credentials@w3.org
Message-ID: <2c9fafeb-d98b-716d-0ab9-b8fe445c412d@kent.ac.uk>


On 12/06/2016 22:13, Steven Rowat wrote:
> On 6/12/16 1:32 PM, David Chadwick wrote:
>> I believe the latest definition of claim in the architecture document
>>
>> http://w3c.github.io/webpayments-ig/VCTF/architecture/
>>
>> is fundamentally wrong. It says
>>
>> Claim
>>     A statement made by an entity about a subject. For example: "Jane is
>> a doctor."
>>
>> The example is not one claim, but two claims. It claims that the subject
>> is a doctor and that the subject is called Jane. We should rewrite this
>> to say
>>
>> Claim
>>     A statement made by an entity about a holder. For example: "The
>> holder is a doctor."
> 
> +1
> So, "The holder's name is Jane" is separate claim.
> 
> Then, sorry to partially hijack your thread, but as an interesting
> extension, I can relate this to my other concern about pseudonyms
> (aliases), and make a third claim:
> 
> "The holder has a pseudonym 'George'".
> 
> This leads specifically to the interesting fact that the simple 'name'
> of Jane is implied to be the 'legal name' (unless stated otherwise).
> 
> So perhaps it would be best to always make that explicit. Otherwise it's
> ambiguous -- what sort of name is it? Who calls Jane Jane?
> 
> Claim: The holder has legal name 'Jane'.
> Claim: The holder has pseudonym 'George'.

This can be addressed in a couple of ways (at least)

1. Who is the issuer? If the issuer is a legal entity, this implies the
name is a legal one, whereas if the issuer is the holder, it implies a
pseudonym.
2. The attribute can be subclassed so that the holder/issuer can decide
to issue either a generic name claim, or a specialised name claim (such
as pseudonym, legal name etc.)

regards

David


> Claim: The holder is a doctor.
> 
> Steven
> 
>>
>>
>> regards
>>
>> David
>>
>>
>>
>>
> 
> 
Received on Monday, 13 June 2016 07:58:21 UTC

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