This specification describes a Linked Data vocabulary for asserting Verifiable Credentials related to traceability information, such as chemical properties, mechanical properties, country of origin, and other attributes used to determine the status of a products and materials in a supply chain.

This is an experimental specification and is undergoing regular revisions. It is not fit for production deployment.

Please open an issue , if you wish to collaborate on this specification.

You may also reach out via the mailing list: public-credentials@w3.org (subscribe, archives)

Introduction

This specification describes a Linked Data vocabulary for asserting Verifiable Credentials related to traceability information, such as chemical properties, mechanical properties, country of origin, and other attributes used to determine the status of a products and materials in a supply chain.

Use Cases and Requirements

The following use cases outline a number of key scenarios that readers might find useful:

Example

The following example is provided as a simple example of when this vocabulary is useful:

Terminology

The following terms are used to describe concepts in this specification.

entity
A thing with distinct and independent existence, such as a person, organization, or device that performs one or more roles in the ecosystem.
user agent
A program, such as a browser or other Web client, that mediates the communication between the various roles in this specification.
URI
An identifier as defined by [[RFC3986]].

Vocabulary

This vocabulary assumes all terms specified in the base Verifiable Credentials [[VC-DATA-MODEL]] context.

In addition, the following classes are available for specifying information related to supply-chain traceability.

You may view the latest json-ld vocabulary at:
https://w3id.org/traceability/v1

You may view the latest json-schema definition at:
https://w3id.org/traceability/v1/PostalAddress.json

This vocabulary was last generated Thursday, October 15, 2020 8:47 AM

Privacy Considerations

This section details the general privacy considerations and specific privacy implications of deploying this specification into production environments.

Security Considerations

There are a number of security considerations that implementers should be aware of when processing data described by this specification. Ignoring or not understanding the implications of this section can result in security vulnerabilities.

While this section attempts to highlight a broad set of security considerations, it is not a complete list. Implementers are urged to seek the advice of security and cryptography professionals when implementing mission critical systems using the technology outlined in this specification.

Accessibility Considerations

There are a number of accessibility considerations implementers should be aware of when processing data described in this specification. As with any web standards or protocols implementation, ignoring accessibility issues makes this information unusable to a large subset of the population. It is important to follow accessibility guidelines and standards, such as [[WCAG21]], to ensure all people, regardless of ability, can make use of this data. This is especially important when establishing systems utilizing cryptography, which have historically created problems for assistive technologies.

This section details the general accessibility considerations to take into account when utilizing this data model.

Internationalization Considerations

There are a number of internationalization considerations implementers should be aware of when publishing data described in this specification. As with any web standards or protocols implementation, ignoring internationalization makes it difficult for data to be produced and consumed across a disparate set of languages and societies, which would limit the applicability of the specification and significantly diminish its value as a standard.

This section outlines general internationalization considerations to take into account when utilizing this data model.