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Content Attestation of Article Type Implementation Guidelines

Terminology​

For terms not explained in this document, please see Terminology.

  • Content Attestation (CA)

Article Data Model​

Complies with Content Attestation .

Property​

@context​

REQUIRED. It MUST complies with OP VC Data Model . Additionally, the third value MUST be "https://originator-profile.org/ns/cip/v1".

type​

REQUIRED. It MUST be ["VerifiableCredential", "ContentAttestation"].

credentialSubject​

This is a JSON-LD Node Object that represents the content. The application developed by Originator Profile Collaborative Innovation Partnership (OP-CIP) uses the following properties:

note

The properties in credentialSubject were decided based on https://schema.org/Article. We plan to decide the extent to which we will comply with schema.org regarding the interpretation of each property and whether it is necessary or not, based on exchanges of opinions with companies that use OP.

  • type: REQUIRED. `It MUST be Article.
  • headline: REQUIRED. Title of the content.
  • description: REQUIRED. A description of the content(plain text ).
  • image: OPTIONAL. A thumbnail image for the content. RECOMMENDED if a thumbnail image is available. It MUST be a JSON-LD Node Object of type image datatype. This property allows you to verify the CA.
  • datePublished: OPTIONAL. The publication date and time. MUST be of the dateTimeStamp data type.
  • dateModified: OPTIONAL. The last modified date and time. MUST be of type dateTimeStamp data type.
  • author: OPTIONAL. An array of author names (strings)
  • editor: OPTIONAL.An array of editor names (strings)
  • genre: OPTIONAL. Genre (string)

allowedUrl​

REQUIRED. Properties defined for Content Attestation. It MUST NOT be an empty array.

target​

REQUIRED. Properties defined for Content Attestation. It MUST NOT be an empty array.

Appendix​

example​

This section is non-normative.

Below is an example of Content.

{
  "@context": [
    "https://www.w3.org/ns/credentials/v2",
    "https://originator-profile.org/ns/credentials/v1",
    "https://originator-profile.org/ns/cip/v1",
    { "@language": "en" }
  ],
  "type": ["VerifiableCredential", "ContentAttestation"],
  "issuer": "dns:example.com",
  "credentialSubject": {
    "id": "urn:uuid:78550fa7-f846-4e0f-ad5c-8d34461cb95b",
    "type": "Article",
    "headline": "<Title of the Web page>",
    "image": {
      "id": "https://media.example.com/image.png",
      "digestSRI": "sha256-WNn1owxcJX6uwrNFOhPX+npz4j46s3a1cExjX5wWVxw="
    },
    "description": "<A description of Web page>",
    "author": ["Jane Smith"],
    "editor": ["John Smith"],
    "datePublished": "2023-07-04T19:14:00Z",
    "dateModified": "2023-07-04T19:14:00Z",
    "genre": "Arts & Entertainment"
  },
  "allowedUrl": ["https://media.example.com/articles/2024-06-30"],
  "target": [
    {
      "type": "VisibleTextTargetIntegrity",
      "cssSelector": "<CSS Selector>",
      "integrity": "sha256-GYC9PqfIw0qWahU6OlReQfuurCI5VLJplslVdF7M95U="
    },
    {
      "type": "ExternalResourceTargetIntegrity",
      "integrity": "sha256-+M3dMZXeSIwAP8BsIAwxn5ofFWUtaoSoDfB+/J8uXMo="
    }
  ]
}