[Openid-specs-ab] Issue #1370: [SIOPv2] agree on the set of Static Self-Issued OpenID Provider Discovery Metadata (openid/connect)

[Kristina Yasuda]

New issue 1370: [SIOPv2] agree on the set of Static Self-Issued OpenID Provider Discovery Metadata
https://bitbucket.org/openid/connect/issues/1370/siopv2-agree-on-the-set-of-static-self

Kristina Yasuda:

Need to agree on the set of `Static Self-Issued OpenID Provider Discovery Metadata` tied to `openid:` and discuss whether \`subject\_syntax\_types\_supported\` should be defined.

Below is currently defined set of static SIOP Discovery Metadata.

````
```json
{
  "authorization_endpoint": "openid:",
  "issuer": "https://self-issued.me/v2",
  "response_types_supported": [
    "id_token"
  ],
  "scopes_supported": [
    "openid"
  ],
  "subject_types_supported": [
    "pairwise"
  ],
  "id_token_signing_alg_values_supported": [
    "ES256",
    "ES256K"
  ],
  "request_object_signing_alg_values_supported": [
    "ES256",
    "ES256K"
  ]
}
```
````

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