Re: Indexing/searching a corpus of (decentralized) self-sovereign data

Oh, I also just realized that this might be relevant as well:
https://eips.ethereum.org/EIPS/eip-4804

Hope it doesn't add any indigestion ;)

Thanks,
__juan

On 11/16/2022 10:11 PM, Leonard Rosenthol wrote:

> Thanks to Juan, Alex, and John – I have a LOT of new reading to do! Much appreciated.
>
> Will definitely report back as I digest all of it and think through how it might be used.
>
> Leonard
>
> From: Juan Caballero [<caballerojuan@pm.me>](mailto:caballerojuan@pm.me)
> Date: Wednesday, November 16, 2022 at 3:08 PM
> To: public-credentials@w3.org [<public-credentials@w3.org>](mailto:public-credentials@w3.org)
> Subject: Re: Indexing/searching a corpus of (decentralized) self-sovereign data
>
> EXTERNAL: Use caution when clicking on links or opening attachments.
>
> Hey Leonard!
>
>> how do you reference a decentralized object (e.g. something on a DLT)
>
> There is a little prior art for cross-chain/multi-chain indexing and addressing at CASA:
> [https://chainagnostic.org/CAIPs/caip-19](https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fchainagnostic.org%2FCAIPs%2Fcaip-19&data=05%7C01%7Clrosenth%40adobe.com%7C099a2d5640354fde16fa08dac80d6df7%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638042261227068427%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=4jO%2F9wBHCtD4TTA5UPxnUGPdpT2COzXVjjOjqGXJ5uA%3D&reserved=0)
>
> I know that Sebastian from [https://iscc.codes/](https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fiscc.codes%2F&data=05%7C01%7Clrosenth%40adobe.com%7C099a2d5640354fde16fa08dac80d6df7%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638042261227068427%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=cSUvvWpzGvujjVi1nK%2FYKvlzfIByhJ4MJL5JVEPo7N4%3D&reserved=0) and others in Europe have been building on CASA standards for exactly the kind of multi-chain indexing usecases I would imagine you're thinking about.
>
> As for IPFS, the broader Protocol Labs archipelago of companies and [mostly open-source] codebases includes many building blocks and approaches to this point. For example, in response to the limitations of ipfs:// as a protocol (that many contexts cannot trust), the IPFS community upgraded the "ipfs URL" as we know it, the [Content Identifier has been upgraded](https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdocs.ipfs.tech%2Fhow-to%2Fbest-practices-for-ipfs-builders%2F%23use-cidv1-for-future-proof-addressing-and-case-insenstive-contexts&data=05%7C01%7Clrosenth%40adobe.com%7C099a2d5640354fde16fa08dac80d6df7%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638042261227068427%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=VlrCiQWE4AwjvoaPOaq13p4iwBmnURr2LRgBha6V6N8%3D&reserved=0) to a case-insensitive and prefixed new version, which enables IPFS gateways to deliver them over https:// for those use-cases where a specific IPFS gateway operator is easier to allow-list (and trust) than ipfs:// qua protocol. (Shout out to Markus' DNSlink spec at IETF!). Depending how far into the IPFS weeds you want to go, there are many options, and companies like Ceramic, DAG-Haus, and Web3.storage are trying to advance and popularize IPLD as a way of tracking decentralized data across contexts.
>
> As for DID URLs, big up to Cheqd team and Markus for picking that back up, looking forward to more progress there for all these use-cases!
>
> Thanks,
> __juan
>
> On 11/15/2022 9:35 PM, Leonard Rosenthol wrote:
>
>> It’s not unlike a problem that we are trying to reconcile in C2PA – how do you reference a decentralized object (e.g. something on a DLT)? There is no standardize mechanism for referencing – ala a URL. At least for IPFS, they standardized a model for “proxying” so that you can use an `ipfs://` URL.
>>
>> DIDs, and the DID Method registry, are something for identities – but that doesn’t help for all the myriad of other things that can live on a DLT.
>>
>> Hope this conversation can include that as well.
>>
>> Leonard
>>
>> From: Michael Herman (Trusted Digital Web) [<mwherman@parallelspace.net>](mailto:mwherman@parallelspace.net)
>> Date: Tuesday, November 15, 2022 at 2:22 PM
>> To: public-credentials (public-credentials@w3.org) [<public-credentials@w3.org>](mailto:public-credentials@w3.org)
>> Subject: Indexing/searching a corpus of (decentralized) self-sovereign data
>>
>> EXTERNAL: Use caution when clicking on links or opening attachments.
>>
>> As I started to think about this, it turns out that it is not a straightforward problem (and hence, neither is the solution).
>>
>> Is anyone aware of any previous discussions on this topic, articles, papers, etc. that analyze this problem and, perhaps, characterize what a solution might look like?
>>
>> Thank you,
>>
>> Michael
>>
>> Best regards,
>>
>> Michael Herman
>>
>> Far Left Self-Sovereignist
>>
>> First Principles Thinker
>>
>> Self-Sovereign Blockchain Architect
>>
>> Trusted Digital Web
>>
>> Hyperonomy Digital Identity Lab
>>
>> Parallelspace Corporation
>
> --
>
> ---------------------------------------------------------------
>
> Juan Caballero, PhD. [Freelance](https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flearningproof.xyz%2F&data=05%7C01%7Clrosenth%40adobe.com%7C099a2d5640354fde16fa08dac80d6df7%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638042261227068427%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=LHFc0bU%2FpnitYxjHKQ1rdUj0qBZ2jCNSHQjrRabJd0g%3D&reserved=0) Identity Researcher & Community Manager Berlin-based: +49 one573 59945two5 Signal/whatsapp: +1 4one5-310135one

--
------------
Juan Caballero, PhD.
Personal/Freelance account, opinions are not my employers', etc.
PST/CET; Self-schedule through [cal.com](https://cal.com/bumblefudge)