Local Government Certification PA

Terminology

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

• Profile Annotation (PA)
• Local Government Certification PA: A Profile Annotation that guarantees certification by the local government of the OP-holding organization.

Local Government Certification PA Properties

It MUST comply with Profile Annotation.

Property

Local Government Certification PA Properties

Name	Type	Description
@context	string[]	REQUIRED. It MUST comply with OP VC Data Model. In addition, the third value MUST be "https://originator-profile.org/ns/cip/v1".
type	string[]	REQUIRED. It MUST be ["VerifiableCredential", "ProfileAnnotation"].
issuer	string	REQUIRED. It MUST be the OP ID of the PA issuer.
credentialSubject	object	REQUIRED. A JSON-LD Node Object containing the following credentialSubject properties.

credentialSubject Properties

Name	Type	Description
id	string	REQUIRED. The OP ID of an organization holding the PA.
type	string	REQUIRED. Set it to JP-LocalGovernmentCertificate.
name	string	OPTIONAL. The name of this PA.
description	string	OPTIONAL. It is a description of this PA.
image	object	OPTIONAL. MUST be a JSON-LD Node Object of type image datatype. This property allows you to verify that the PA image has not been tampered with.
annotation	object	REQUIRED. It MUST be a Profile Annotation Policy.

note

Properties for local government certification PA outside of Japan are under consideration.

Appendix

Example

This section is non-normative.

Below is a concrete example of a local government certification PA.

{
  "@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", "ProfileAnnotation"],
  "issuer": "dns:lgac.exp.originator-profile.org",
  "credentialSubject": {
    "id": "dns:pa-holder.example.jp",
    "type": "JP-LocalGovernmentCertificate",
    "image": {
      "id": "https://lgac.exp.originator-profile.org/image.png",
      "digestSRI": "sha256-sbXuUuLz8dhRdPPpoiu4U+sjWLqIjjzJ7DPGxDZYxNM="
    },
    "annotation": {
      "id": "urn:uuid:203a2553-f1a8-40ba-9df0-4e508aa8511d",
      "type": "ProfileAnnotationPolicy",
      "name": "Fictitious Local Government Authentication Center Local Government Certification",
      "description": "This organization is a local public entity organized and operated in accordance with the Local Autonomy Law.",
      "ref": "https://lgac.exp.originator-profile.org/"
    }
  }
}

Migration Required

If you are using a previous format that extends Certificate, such as the one below, it will become unverifiable after 2027-01-01. The issuer MUST migrate to the format defined in this document by then.

---

Municipality Certification Certificate Properties

It MUST comply with Certificate.

Property

@context

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

credentialSubject

REQUIRED. It is a JSON-LD Node Object representing a Municipality Certification Certificate.

• id: REQUIRED. The OP ID of an organization holding the certificate.
• type: REQUIRED. Set it to CertificateProperties
• description: OPTIONAL. It is a description of this certificate (string).
• image: OPTIONAL. MUST be a JSON-LD Node Object of type image. This property allows you to verify that the image in the Certificate has not been tampered with.
• certifier: OPTIONAL. The name of the certification authority.
• verifier: OPTIONAL. The name of the verifier.
• certificationSystem.id: REQUIRED. Specify the ID of the certification system in URI format.
• certificationSystem.type: REQUIRED. MUST be a CertificationSystem.
• certificationSystem.name: REQUIRED. The name of the certification system.
• certificationSystem.description: OPTIONAL. A description of the certification system (string).
• certificationSystem.ref: RECOMMENDED. The URL of a page people can read to learn more about the certification system.

note

Properties for municipality certification certificates outside of Japan are under consideration.

Appendix

Example

This section is non-normative.

Below is a concrete example of a municipality certification certificate.

{
  "@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", "Certificate"],
  "issuer": "dns:lgac.exp.originator-profile.org",
  "credentialSubject": {
    "id": "dns:pa-holder.example.jp",
    "type": "CertificateProperties",
    "certificationSystem": {
      "id": "urn:uuid:203a2553-f1a8-40ba-9df0-4e508aa8511d",
      "type": "CertificationSystem",
      "name": "Fictitious Municipality Certification Center Municipal Certification",
      "description": "This organization is a local public entity organized and operated in accordance with the Local Autonomy Law.",
      "ref": "https://lgac.exp.originator-profile.org/"
    },
    "certifier": "Fictitious Organization Existence Verification Authority",
    "image": {
      "id": "https://lgac.exp.originator-profile.org/image.png",
      "digestSRI": "sha256-sbXuUuLz8dhRdPPpoiu4U+sjWLqIjjzJ7DPGxDZYxNM="
    }
  }
}