RE: Transcription of Selected Parts of the DIF SDS/CS March 11, 2021 Zoom Call: Hub and EDV Discussion featuring Daniel Buchner’s Description of a Hub

Adam, I’m feeling a bit uncomfortable answering your questions for various reasons …mostly because I’m trying to act as a fact-based steward …albeit with a particular direction in mind.

MWH>> Here goes anyway, …see below.

Anyone else, please chime in and correct me.  e.g. @DanielB.

Michael

From: Adam Stallard <adam.stallard@gmail.com>
Sent: March 24, 2021 8:52 AM
To: Michael Herman (Trusted Digital Web) <mwherman@parallelspace.net>
Cc: sds-wg@lists.identity.foundation; sds-wg@dif.groups.io; Credentials Community Group <public-credentials@w3.org>; Daniel Buchner <daniel.buchner@microsoft.com>
Subject: Re: Transcription of Selected Parts of the DIF SDS/CS March 11, 2021 Zoom Call: Hub and EDV Discussion featuring Daniel Buchner’s Description of a Hub

Thanks, Michael,

  1.  I missed the call on the 11th, so I couldn't ask then, but do hubs host EDVs or do they simply route between agents who host the EDVs?
MWH>> I’ve added a link to the recording next to the transcription: https://hyperonomy.com/2021/03/24/transcription-of-selected-parts-of-the-dif-sds-cs-march-11-2021-zoom-call-hub-and-edv-discussion-featuring-daniel-buchners-description-of-a-hub/

MWH>> Based on Daniel’s verbal explanation (as well as some developing consensus during the meeting), Hubs are a distinct layer below Agents and above EDVs (as I depicted in the last couple diagrams – the OSI Model and the AHE-ARM).
By implication, I take this to mean that Hubs *do not* host EDVs …Hubs simply access EDVs and their content.  Based on the current specification, EDVs are hosted or attached to EDV service *instances*.
NOTE: There is potential for confusion if the Hub and EDV service instance are co-located on the same virtual or physical infrastructure – but let’s not let that confuse the conceptual and logical separation of Agents, Hubs, and EDVs.

  1.  If I'm an agent and I want my EDV to be replicated so it has a better chance of being online, is that the job of other agents, or will a hub also host data?
MWH>> Based *solely on Daniel’s discussion in the call*, Hubs could be responsible for some sort of “syncing” between EDVs.  This can be conceptually true but I also have yet another whitepaper-in-progress (200+ pages of architecture variation discussions) that suggests from a performance perspective, “synching” (aka replication) can be performed at Layer B …controlled by Layer D or above (e.g. by an Agent or Hub).
I also believe in an Agent <> EDV configuration (no Hub), the above comments can be easily adapted by replacing “Hub” with “Agent”.

  1.  I could imagine a graph of information flow being helpful.  I noticed in the transcript, Orie was attempting to explain the relationships by drawing arrows.

MWH>> I’m hoping the above discussion will suffice for now.  But please let me know if it doesn’t say enough.  I’m also partly hedging until I can get my next whitepaper is completed because the potential EDV services models represent an involved topic/discussion.


  1.  --Adam

MWH>> Thank you for asking your questions and prompting further discussion.



On Wed, Mar 24, 2021 at 6:40 AM Michael Herman (Trusted Digital Web) <mwherman@parallelspace.net<mailto:mwherman@parallelspace.net>> wrote:
Transcription of Selected Parts of the DIF SDS/CS March 11, 2021 Zoom Call:
Hub and EDV Discussion featuring Daniel Buchner’s Description of a Hub

I’ve posted this partial transcription here: https://hyperonomy.com/2021/03/24/transcription-of-selected-parts-of-the-dif-sds-cs-march-11-2021-zoom-call-hub-and-edv-discussion-featuring-daniel-buchners-description-of-a-hub/


Context

This is a transcription of selected parts of the EDV-Hub conversation during the DIF SDS/CS Thursday weekly Zoom call on March 11, 2021. This is the call where Daniel Buchner described (verbally) several aspects about what is and what is not a Hub.

This partial transcription focuses primarily on Daniel’s comments as they relate to the question “what is a Hub?".

Have a great day, afternoon, or evening,
Michael

From: Michael Herman (Trusted Digital Web) <mwherman@parallelspace.net<mailto:mwherman@parallelspace.net>>
Sent: March 24, 2021 7:10 AM
To: sds-wg@lists.identity.foundation<mailto:sds-wg@lists.identity.foundation>; sds-wg@dif.groups.io<mailto:sds-wg@dif.groups.io>; Credentials Community Group <public-credentials@w3.org<mailto:public-credentials@w3.org>>; Daniel Buchner <daniel.buchner@microsoft.com<mailto:daniel.buchner@microsoft.com>>
Subject: RE: Is there an equivalent to the "OSI Network Stack" but for storage and storage access?

I tweaked (twerked?) up a version of https://commons.wikimedia.org/wiki/File:Osi-model-jb.svg to produce this …just an idea. It follows from a transcription of DanielB’s March 11 description of a Hub and where it sits between an Agent and an EDV.

Your thoughts? …maybe this becomes a key aspect/contribution in our CS specifications?

[cid:image001.jpg@01D7208F.E984DDD0]


Best regards,
Michael Herman
Far Left Self-Sovereignist

Self-Sovereign Blockchain Architect
Trusted Digital Web
Hyperonomy Digital Identity Lab
Parallelspace Corporation

[cid:image002.jpg@01D72090.076359D0]



From: Michael Herman (Trusted Digital Web) <mwherman@parallelspace.net<mailto:mwherman@parallelspace.net>>
Sent: March 24, 2021 6:29 AM
To: sds-wg@lists.identity.foundation<mailto:sds-wg@lists.identity.foundation>; sds-wg@dif.groups.io<mailto:sds-wg@dif.groups.io>; Credentials Community Group <public-credentials@w3.org<mailto:public-credentials@w3.org>>
Subject: Is there an equivalent to the "OSI Network Stack" but for storage and storage access?

Is there an equivalent to the "OSI Network Stack" but for data storage and data storage access?

Here’s an example of the OSI Network Stack from https://ssimeetup.org/key-event-receipt-infrastructure-keri-secure-identifier-overlay-internet-sam-smith-webinar-58/...


[cid:image004.jpg@01D7208F.E984DDD0]

Michael