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

```json title="activity"
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture_one_actor/actor",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public",
    "http://misskey/users/9q9s1mag5omu0001"
  ],
  "id": "http://pasture_one_actor/actor/BLqrSyKFDZA",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture_one_actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://misskey/users/9q9s1mag5omu0001"
    ],
    "id": "http://pasture_one_actor/actor/DtdvhaspkRo",
    "published": "2024-02-28T19:53:50Z",
    "content": "https://www.w3.org/ns/activitystreams#Public"
  }
}
```


```json title="misskey"
{
  "id": "9q9s40q8ba8v000j",
  "createdAt": "2024-02-28T19:53:50.000Z",
  "userId": "9q9s36raba8v0002",
  "user": {
    "id": "9q9s36raba8v0002",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture_one_actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture_one_actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "https://www.w3.org/ns/activitystreams#Public",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture_one_actor/actor/DtdvhaspkRo",
  "clippedCount": 0
}
```

Example 2

```json title="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/9q9s1mag5omu0001",
    "as:Public"
  ],
  "id": "http://pasture_one_actor/actor/-CppyA766Vk",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture_one_actor/actor",
    "to": [
      "as:Public",
      "http://misskey/users/9q9s1mag5omu0001"
    ],
    "id": "http://pasture_one_actor/actor/TxdNpBYUOKU",
    "published": "2024-02-28T19:53:52Z",
    "content": "as:Public"
  }
}
```


```json title="misskey"
{
  "id": "9q9s429sba8v000k",
  "createdAt": "2024-02-28T19:53:52.000Z",
  "userId": "9q9s36raba8v0002",
  "user": {
    "id": "9q9s36raba8v0002",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture_one_actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture_one_actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "as:Public",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture_one_actor/actor/TxdNpBYUOKU",
  "clippedCount": 0
}
```

Example 3

```json title="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/9q9s1mag5omu0001",
    "Public"
  ],
  "id": "http://pasture_one_actor/actor/tiEKSoIaG9Q",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture_one_actor/actor",
    "to": [
      "Public",
      "http://misskey/users/9q9s1mag5omu0001"
    ],
    "id": "http://pasture_one_actor/actor/7MNn9LTA2zU",
    "published": "2024-02-28T19:53:54Z",
    "content": "Public"
  }
}
```


```json title="misskey"
{
  "id": "9q9s43tcba8v000l",
  "createdAt": "2024-02-28T19:53:54.000Z",
  "userId": "9q9s36raba8v0002",
  "user": {
    "id": "9q9s36raba8v0002",
    "name": "Test Actor",
    "username": "actor",
    "host": "pasture_one_actor",
    "avatarUrl": "http://misskey/identicon/actor@pasture_one_actor",
    "avatarBlurhash": null,
    "avatarDecorations": [],
    "isBot": false,
    "isCat": false,
    "instance": {
      "name": null,
      "softwareName": null,
      "softwareVersion": null,
      "iconUrl": null,
      "faviconUrl": null,
      "themeColor": null
    },
    "emojis": {},
    "onlineStatus": "unknown"
  },
  "text": "Public",
  "cw": null,
  "visibility": "public",
  "localOnly": false,
  "reactionAcceptance": null,
  "renoteCount": 0,
  "repliesCount": 0,
  "reactions": {},
  "reactionEmojis": {},
  "emojis": {},
  "fileIds": [],
  "files": [],
  "replyId": null,
  "renoteId": null,
  "uri": "http://pasture_one_actor/actor/7MNn9LTA2zU",
  "clippedCount": 0
}
```