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_posts/specs-standards/2019-03-03-specs-standards.md
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@ -35,20 +35,11 @@ I will begin with a listing of standards bodies, organizations and open processe
* [Me2B Alliance](https://www.me2balliance.org/repository.html) * [Me2B Alliance](https://www.me2balliance.org/repository.html)
* [Ethereum Enterprise Alliance](https://entethalliance.org/participate/working-groups/) * [Ethereum Enterprise Alliance](https://entethalliance.org/participate/working-groups/)
## contents
* [XDI](#xdi)
* [OASIS XDI TC Technical Committee on GitHub](#oasis-xdi-tech-committee-on-github)
* [W3C](#w3c)
* [DID the Decentralized Identifier](#did-the-decentralized-identifier)
* [Verifiable Claims](#verifiable-claims)
* [Decentralized Key Managment DKMS](#decentralized-key-management-agents)
* [DID Auth](#did-auth)
* [Ethereum ERC-EIP](#ethereum-erc-eip)
* [ERC725-735](#erc725-735)
* [Blockcerts](#blockcerts)
* [Schema](#schema)
[Why Engage with Standards?](https://www.continuumloop.com/why-engage-with-standards/)
> too many people complain about problems but don’t step to Fix It!. There are certainly a lot of flawed standards – but they make interoperability possible – not perfect – but possible. If you haven’t used them then you have no right to complain that they are too complex, too simple (even in the same standard) or too domain specific – or any of the other rants and raves that go on.
>
> If you’re willing to put up with a lot of work for incremental improvements then step up and join a standard. Whether that is a (relatively) fast moving standard group like OASIS (www.oasis-open.org) or a slower but more international group like ISO you will learn. You’ll also benefit from working with experts. These experts donate their time and are more than happy to provide ideas, guidance, and leadership.
## XDI ## XDI

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_posts/specs-standards/2020-01-10-verifiable-credentials.md
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@ -28,7 +28,7 @@ Not all verifiable credentials are created the same. This post examines the cate
## Application ## Application
* [SolidVC - A Decentralized Framework for Verifiable Credentials on the Web](https://dspace.mit.edu/bitstream/handle/1721.1/121667/1102055877-MIT.pdf) * [SolidVC : a decentralized framework for Verifiable Credentials on the web](https://dspace.mit.edu/handle/1721.1/121667)
> Credentials are an integral part of our lives, as they express our capabilities and enable access to restricted services and benefits. In the early 2010s, the Verifiable Claims Working Group of the World Wide Web Consortium (W3C) proposed a specification for what is now the Verifiable Credentials Data Model. This living specification, which is still in development, outlines a cogent framework for the issuance, storage, presentation, and verification of credentials on the Web. Many of the leading Verifiable Credentials projects leverage Distributed Ledger Technology (DLT), potentially compromising Web interoperability and sometimes exposing otherwise personal data. SolidVC is a decentralized Verifiable Credentials platform built with the open protocols of the Web. It is implemented on top of Solid, a Web framework developed at MIT in 2016 that allows decentralized applications to interact with personal user data to provide services in an access controlled environment. > Credentials are an integral part of our lives, as they express our capabilities and enable access to restricted services and benefits. In the early 2010s, the Verifiable Claims Working Group of the World Wide Web Consortium (W3C) proposed a specification for what is now the Verifiable Credentials Data Model. This living specification, which is still in development, outlines a cogent framework for the issuance, storage, presentation, and verification of credentials on the Web. Many of the leading Verifiable Credentials projects leverage Distributed Ledger Technology (DLT), potentially compromising Web interoperability and sometimes exposing otherwise personal data. SolidVC is a decentralized Verifiable Credentials platform built with the open protocols of the Web. It is implemented on top of Solid, a Web framework developed at MIT in 2016 that allows decentralized applications to interact with personal user data to provide services in an access controlled environment.
* [Blockcerts V3 Proposal - Verifiable Credentials & Decentralized Identifiers](https://community.blockcerts.org/t/blockcerts-v3-proposal-verifiable-credentials-decentralized-identifiers/2221) * [Blockcerts V3 Proposal - Verifiable Credentials & Decentralized Identifiers](https://community.blockcerts.org/t/blockcerts-v3-proposal-verifiable-credentials-decentralized-identifiers/2221)
> As the standards around Verifable Credentials are starting to take form, diferent favors of "verifable credentials-like" data structures need to make necessary changes to leverage on the rulesets outlined and constantly reviewed by knowledgeable communities such as the W3C. The purpose of this paper is to identify all of the changes needed for Blockcerts to comply with the Verifable Credentials (VCs) and Decentralized Identifers (DIDs) standards and to expand upon the additional benefts of using a blockchain in combination with Verifable Credentials. This paper is meant to act as an explainer in which a formal specifcation can be created. This paper proposes multiple implementation options for several properties. The intention is that we can engage the Blockcerts / Verifable Credential communities and see what fts best. > As the standards around Verifable Credentials are starting to take form, diferent favors of "verifable credentials-like" data structures need to make necessary changes to leverage on the rulesets outlined and constantly reviewed by knowledgeable communities such as the W3C. The purpose of this paper is to identify all of the changes needed for Blockcerts to comply with the Verifable Credentials (VCs) and Decentralized Identifers (DIDs) standards and to expand upon the additional benefts of using a blockchain in combination with Verifable Credentials. This paper is meant to act as an explainer in which a formal specifcation can be created. This paper proposes multiple implementation options for several properties. The intention is that we can engage the Blockcerts / Verifable Credential communities and see what fts best.
@ -41,12 +41,20 @@ Not all verifiable credentials are created the same. This post examines the cate
> The Open Badges Specifcation is a vocabulary and set of protocols that describes credentials. The vocabulary can describe any achievement in terms of a common set of attributes and is most often used for educational or occupational credentials. At present in version 2.0, Open Badges defnes two verifcation methods: HostedBadge (requiring resources hosted on HTTP in specifc locations) and SignedBadge (using a JSON Web Signature, which references hosted Issuer Profle and CryptographicKey information). > The Open Badges Specifcation is a vocabulary and set of protocols that describes credentials. The vocabulary can describe any achievement in terms of a common set of attributes and is most often used for educational or occupational credentials. At present in version 2.0, Open Badges defnes two verifcation methods: HostedBadge (requiring resources hosted on HTTP in specifc locations) and SignedBadge (using a JSON Web Signature, which references hosted Issuer Profle and CryptographicKey information).
> >
> The Blockcerts Open Badges Draft Extension introduced a verifcation method based on those used by Verifable Credentials for the specifc use case of blockchain-anchored credentials. This paper expands that work and proposes a new option that can reside alongside existing Open Badges verifcation methods. > The Blockcerts Open Badges Draft Extension introduced a verifcation method based on those used by Verifable Credentials for the specifc use case of blockchain-anchored credentials. This paper expands that work and proposes a new option that can reside alongside existing Open Badges verifcation methods.
* [OPEN BADGES ON THE BLOCKCHAIN](https://draftin.com/documents/1138961?token=hQ5q0mCHizZum8-pkDFYUZr4YFYOWMN01BPT-5uX00hAaGxYOAlgAlhyenat76hjNpTCs-CMWPI38KWn_omp0Oc)
> This document gives an overview of the status, interesting companies and people regarding Verifiable Open Badges on the Blockchain.
* [Enabling Decentralised Identifiers and Verifiable Credentials for Constrained IoT Devices using OAuth-based Delegation](https://www.ndss-symposium.org/wp-content/uploads/diss2019_05_Lagutin_paper.pdf) * [Enabling Decentralised Identifiers and Verifiable Credentials for Constrained IoT Devices using OAuth-based Delegation](https://www.ndss-symposium.org/wp-content/uploads/diss2019_05_Lagutin_paper.pdf)
> Abstract—Decentralised identifiers (DIDs) and verifiable credentials (VCs) are upcoming standards for self-sovereign privacypreserving identifiers and authorisation, respectively. This focus on privacy can help improve many services and open up new business models, but using DIDs and VCs directly on constrained IoT devices can be problematic due to the management and resource overhead. This paper presents an OAuth-based method to delegate the processing and access policy management to the Authorisation Server thus allowing also systems with constrained IoT devices to benefit from DIDs and VCs. > Abstract—Decentralised identifiers (DIDs) and verifiable credentials (VCs) are upcoming standards for self-sovereign privacypreserving identifiers and authorisation, respectively. This focus on privacy can help improve many services and open up new business models, but using DIDs and VCs directly on constrained IoT devices can be problematic due to the management and resource overhead. This paper presents an OAuth-based method to delegate the processing and access policy management to the Authorisation Server thus allowing also systems with constrained IoT devices to benefit from DIDs and VCs.
* [W3C Verifiable Credentials - Kent Branch](https://www.bcs.org/events/2019/october/w3c-verifiable-credentials-kent-branch/) - [pdf](https://cdn.bcs.org/bcs-org-media/4653/kent-w3c-verifiable-credentials-031019.pdf) * [W3C Verifiable Credentials - Kent Branch](https://www.bcs.org/events/2019/october/w3c-verifiable-credentials-kent-branch/) - [pdf](https://cdn.bcs.org/bcs-org-media/4653/kent-w3c-verifiable-credentials-031019.pdf)
> The speaker will introduce the W3C Verifiable Credentials Data Model, which was published as a Proposed Recommendation in September 2019. Verifiable Credentials are the latest development in identity management and are fundamentally different from today's federated identity management systems such as SAML and OpenID Connect. > The speaker will introduce the W3C Verifiable Credentials Data Model, which was published as a Proposed Recommendation in September 2019. Verifiable Credentials are the latest development in identity management and are fundamentally different from today's federated identity management systems such as SAML and OpenID Connect.
> >
> David will describe the VC ecosystem and data model. He will then describe the prototype implementation which was built with colleagues from the University of Toulouse. They built a prototype system, which uses Fast Identity Online (FIDO) for user authentication, meaning that usernames and passwords are no longer needed. A pilot application was tested with a small sample of NHS patients and the speaker will present the results of this trial. > David will describe the VC ecosystem and data model. He will then describe the prototype implementation which was built with colleagues from the University of Toulouse. They built a prototype system, which uses Fast Identity Online (FIDO) for user authentication, meaning that usernames and passwords are no longer needed. A pilot application was tested with a small sample of NHS patients and the speaker will present the results of this trial.
* [Workday Credentials & WayTo™ By Workday](https://credentials.workday.com/docs/overview/)
> An issuer is any entity that wishes to relinqiush and publicly attest to the veracity of data pertaining to a user. Public attestation comes in the form of a digital signature. When an issuer offers a credential to a user, Workday Credentials cryptographically signs the data in each credential with the issuer's private key before offering it to the user. The signing key's corresponding public key is written to a public ledger and is declared as belonging to the issuer, so that anyone can use that public key to verify the signature embedded in a user's digital credentials and establish trust in a credential's authenticity.
* [IBM Verify Credentials](https://docs.info.verify-creds.com)
> With IBM Verify Credentials and our alpha components, you can begin your journey of exploring the benefits of decentralized identity. We have provided an interactive experience centered around the challenge of proving your identity while opening a financial account. Additionally, we will walk you through the development of your first end-to-end decentralized identity solution.
* [Verifiable credentials and libp2p](https://discuss.libp2p.io/t/verifiable-credentials-and-libp2p/206)
> Hi - we’re looking into libp2p as a network stack for our application and exploring how we could integrate verifiable credentials (https://w3c.github.io/vc-data-model/ 2) infrastructure. A basic use case is that of a node being challenged to provide some specific credential to join the network. The bootstrap node handling the incoming connection should verify the credential with the issuer and complete the connection/bootstrap or terminate it.
## Code ## Code