Public addressing

Public addressing is discussed here. The essential point here is that Public, as:Public, and https://www.w3.org/ns/activitystreams#Public are equivalent as JSON-LD and thus should be treated in the same way by Fediverse applications.

Examples

Example 1

activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "http://misskey/users/a8jupxivzylk0003",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/actor/kFFq_LZeSww",
  "published": "2025-06-03T09:04:06Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/a8jupxivzylk0003"
    ],
    "id": "http://pasture-one-actor/actor/285V6c-SsnQ",
    "published": "2025-06-03T09:04:06Z",
    "content": "https://www.w3.org/ns/activitystreams#Public"
  }
}

Example 2

activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "http://misskey/users/a8jupxivzylk0003",
    "as:Public"
  ],
  "id": "http://pasture-one-actor/actor/FTjpfLY3qF8",
  "published": "2025-06-03T09:04:17Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "as:Public",
      "http://misskey/users/a8jupxivzylk0003"
    ],
    "id": "http://pasture-one-actor/actor/J8YZUah9e94",
    "published": "2025-06-03T09:04:17Z",
    "content": "as:Public"
  }
}

Example 3

activity

{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "Public",
    "http://misskey/users/a8jupxivzylk0003"
  ],
  "id": "http://pasture-one-actor/actor/8_iEOahx9ZM",
  "published": "2025-06-03T09:04:27Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "Public",
      "http://misskey/users/a8jupxivzylk0003"
    ],
    "id": "http://pasture-one-actor/actor/4iph16TtpQk",
    "published": "2025-06-03T09:04:27Z",
    "content": "Public"
  }
}