W3C

- DRAFT -

Verifiable Claims Working Group

03 Oct 2017

Agenda

See also: IRC log

Attendees

Present
Benjamin_Young, Dan_Burnett, Dave_Longley, David_Chadwick, David_Ezell, David_Lehn, Gregg_Kellogg, Matt_Stone, Nathan_George, Reto_Gmür, Ted_Thibodeau, Tzviya_Siegman, Liam_Quin
Regrets
Chair
Matt_Stone, Dan_Burnett, Richard_Varn
Scribe
burn

Contents


<DavidC> I have just circulated my first go at answering the privacy questions to the list

<scribe> scribeNick: burn

<stonematt> Agenda: https://lists.w3.org/Archives/Public/public-vc-wg/2017Oct/0000.html

Agenda review, Introductions

matt: any mods to agenda?

(silence)

reto: (unintelligible)

<dlongley> reto: I'm with a company in Switzerland, work with Facts Mission.

<dlongley> reto: Working with Linked Data.

<reto> I'm connected via browser

TPAC topic review & TPAC Planning

link is https://goo.gl/8voHZS

<reto> The company is called FactsMission which wants to use Linked Data to help distinguish Facts from noise

matt: a few items we should discuss. Several unprioritized issues at the bottom of the list. We reduced the open-ended time and included some of the specific items we need for our charter. Some other items were assigned to us such as privacy and uprove. We need to make progress on those as well.
... there may be others as well.

chadwick: Re integration with SAML. Their model is very different from ours. What are we proposing to do? In our model the user controls VCs, but not in SAML.
... what is it we're trying to acheive?

matt: agreed. But AC members have brought this up as a question, and thus it ended up in the charter.
... we just need something that addresses this concern.

chadwick: i already have text.

matt: will add you as discussion leader for this topic, David. Thanks.

<nage> +1 to use DavidC's text as a starting point and getting it out to the list for review

dlongley: the concern that came up was how this work was different from SAML and OpenID connect. We can answer that and explain how our model can be encapsulated in SAML if you want.

chadwick: I won't be at TPAC.

dlongley: then at least having your paper could help the discussion.
... maybe we need to spend time just on "items in the charter".
... as a group rather than as individual items.

chadwick: we can address this topic during the meeting

matt: Agree with dlongley. There may be other items we don't have listed. The intention was to cover all of them.

chadwick: include UProve and anonymous credentials as well.

matt: do you have insight into UProve as well?

chadwick: I did a comparison of UProve and SAML, but I couldn't do the crypto comparison

<nage> I can help with UProve and Idemix crypto pieces

matt: it was lightly referenced in the charter. We have to decide in the group how much we want to speak to it.

<dlongley> nage: will you be at TPAC?

<nage> yes

chadwick: have written a research proposal of how anonymous credentials could fit into VC

<dlongley> nage: ok great ...

chadwick: won't know until 2018 whether that is approved

matt: if you know of other items please add them to the Google doc with a B next to them
... there are several items on here for brainstorming. Asking for +1 for items to cover and in which order to cover them.
... We are currently over budget for time, so need to figure out which are most important to cover. Understand that many participants are absent today due to RWoT.
... Also a -1 for anything we shouldn't cover. Feel free to do that with your name directly in the Google Doc.
... Will add a vote column.

Doc link again: https://goo.gl/8voHZS

dlongley: another possible topic is how to represent credentials using a consistent UI. Further down the road, but should consider in the data model work.
... a visual representatiotn.
... would be great to figure out how to include this info in the claim itself so they can have a consistent look to them.

liam: how do you mark properties as translated or not translated into different languages. may be related.

dlongley: yes, it could.

<dlongley> https://github.com/w3c/vc-data-model/issues/42

dlongley: not much discussion yet, but talks about integration with web components for consistent display.

<Zakim> liam, you wanted to ask if visual rep relates to i18n

matt: how related is that to what open badges does?

dlongley: somewhat, this is more related to creating full web components that are shareable.
... how do we integrate with other work on web components.

tzviya: the RA21 group is focusing on a singular UX across the community, so they would be interested.

dlongley: Open Badges community has an idea of embedding into images.
... this work could make that more consistent.

matt: would this be new metadata?

dlongley: that's an open issue. Should look at other work in this area.

matt: another topic related to privacy is ODRL. Would this be worthwhile to consider for TPAC discussion?

<liam> [we'll need i11n and accessibility signoff for this spec at some point before leaving CR, so we need a clear story about UX before then]

<DavidC> -> Burn. anonymous credentials = anonymous credentials

<tzviya> https://www.w3.org/2016/poe/wiki/Main_Page

dlongley: don't know who could lead, but could be part of vocabulary discussion.

matt: Seeing lots of voting coming in. Will review next week and order so we can assign timeslots. Thanks all.

Readiness for Privacy Group exposure

matt: we need to reach out to PING.
... We will have them do an initial review of our data model doc. Is it ready, or is there something else we need to do first?

chadwick: I've started a review from that standpoint. Have sent in several issues. Until those issues are resolved it shouldn't go for review.

<dlongley> potentially related to rendering - custom elements: https://w3c.github.io/webcomponents/spec/custom/ and web packaging: https://www.w3.org/TR/web-packaging/

chadwick: should also include answer to privacy questions.

matt: david, have you talked with Manu yet?

chadwick: no

matt: chairs will ask Manu to review

davidc: will finish reviewing the doc as well.
... and post any other issues from that review

<tzviya> note that Web Packaging work is shifted to https://github.com/WICG/webpackage

matt: we will rely on you and Manu to tell us when the doc is ready to share with PING
... we are on hold there until we hear from you

Data Model Spec curent milestone issues

link: https://github.com/w3c/vc-data-model/milestone/3

<stonematt> milestone issues: https://github.com/w3c/vc-data-model/milestone/3

matt: The chairs believe some can be closed

dlongley: Issue 66 is just waiting on a PR.

davidc: the comments I had on vocab were addessing this issue

dlongley: agreed, will include in the PR

matt: issue 59
... manu said +1 to close. any objections?
... (none)

dlongley: will comment and close

matt: issue 33
... active discussion still on this one. anything needed to keep it moving forward?

dlongley: can't close 59!!! someone else will need to

<reto> typing then: RDFS vocabulary was the thing I missed most

<reto> a vocabulary independt of any serialization

reto: needs an RDF schema. lacking that is a big issue

<reto> so I suggest to discuss it at TPAC

<dlongley> https://github.com/w3c/vc-data-model/issues/33#issuecomment-274268657

dlongley: this is part of our charter. issue 33 talks about this. We plan to add a schema but haven't tried to build one yet .
... formal semantics are tribal but need to be nailed down per the charter.

matt: could we invite Reto to help with this?

reto: yes would be glad to help

matt: dlongley, is the location for this accessible?

dlongley: once conferences are done, we can create a place for PRs to happen.

matt: issue 25
... where are we on this one?

<stonematt> https://github.com/w3c/vc-data-model/issues/25

dlongley: this may be resolved by the PR we are working on for issue 66
... we have been using different terms here and need to fix in that PR.

matt: can you please comment in this issue (25) so we can track their relationship?

dlongley: yes

matt: have we achieved the milestone when these are closed?

dlongley: yes, as long as the test suite reflects that

matt: we may be able to publish this milestone doc before TPAC, which would be good

dlongley: pretty tight schedule, so might not happen.

Test Suite Progress

dlongley: both Chris and Manu are at RWoT, so probably not much progress, and definitely no feedback until the conference is done.

matt: will leave on the agenda each week as a standing item.

Future Agenda Topics?

matt: anything else to add in future weeks?
... (silence)

Summary of Action Items

Summary of Resolutions

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Succeeded: s/widely/lightly/
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Present: Benjamin_Young Dan_Burnett Dave_Longley David_Chadwick David_Ezell David_Lehn Gregg_Kellogg Matt_Stone Nathan_George Reto_Gmür Ted_Thibodeau Tzviya_Siegman Liam_Quin
Found ScribeNick: burn
Inferring Scribes: burn
Agenda: https://lists.w3.org/Archives/Public/public-vc-wg/2017Oct/0000.html
Got date from IRC log name: 03 Oct 2017
Guessing minutes URL: http://www.w3.org/2017/10/03-vcwg-minutes.html
People with action items: 

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