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Attribution Format

attributedTo is defined here in the ActivityStreams Vocabulary. It allows us to tell, who authored / owns the object.

This test explores what is allowed in the field.

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://akkoma/users/witch",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/KW9QXKI6qkM",
  "published": "2025-10-04T13:44:01Z",
  "object": {
    "type": "Note",
    "attributedTo": "http://pasture-one-actor/actor",
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://akkoma/users/witch"
    ],
    "id": "http://pasture-one-actor/object/vvPo5FjxIOM",
    "published": "2025-10-04T13:44:01Z",
    "content": "single element"
  }
}
akkoma
{
  "reblogged": false,
  "pleroma": {
    "content": {
      "text/plain": "single element"
    },
    "context": "http://pasture-one-actor/object/vvPo5FjxIOM",
    "conversation_id": 1960987944,
    "direct_conversation_id": null,
    "emoji_reactions": [],
    "expires_at": null,
    "in_reply_to_account_acct": null,
    "local": false,
    "parent_visible": false,
    "pinned_at": null,
    "spoiler_text": {
      "text/plain": ""
    },
    "thread_muted": false
  },
  "in_reply_to_account_id": null,
  "uri": "http://pasture-one-actor/object/vvPo5FjxIOM",
  "edited_at": null,
  "text": null,
  "quote": null,
  "favourited": false,
  "pinned": false,
  "emojis": [],
  "id": "AyrpMEe8lu3zi5h1Rw",
  "mentions": [
    {
      "acct": "witch",
      "id": "AyrovJNFF3epxbqVEG",
      "url": "http://akkoma/users/witch",
      "username": "witch"
    }
  ],
  "content": "single element",
  "akkoma": {
    "source": null
  },
  "spoiler_text": "",
  "media_attachments": [],
  "url": "http://pasture-one-actor/object/vvPo5FjxIOM",
  "reblogs_count": 0,
  "visibility": "public",
  "bookmarked": false,
  "card": null,
  "favourites_count": 0,
  "in_reply_to_id": null,
  "quote_id": null,
  "poll": null,
  "emoji_reactions": [],
  "application": null,
  "tags": [],
  "sensitive": false,
  "account": {
    "acct": "actor@pasture-one-actor",
    "akkoma": {
      "instance": {
        "favicon": null,
        "name": "pasture-one-actor",
        "nodeinfo": {}
      },
      "permit_followback": false,
      "status_ttl_days": null
    },
    "avatar": "http://akkoma/images/avi.png",
    "avatar_static": "http://akkoma/images/avi.png",
    "bot": false,
    "created_at": "2025-10-04T13:40:35.000Z",
    "display_name": "Test Actor",
    "emojis": [],
    "fields": [],
    "followers_count": 0,
    "following_count": 0,
    "fqn": "actor@pasture-one-actor",
    "header": "http://akkoma/images/banner.png",
    "header_static": "http://akkoma/images/banner.png",
    "id": "Ayrp3GhKv5rSZS8yA4",
    "last_status_at": "2025-10-04",
    "locked": false,
    "note": "",
    "pleroma": {
      "also_known_as": [],
      "ap_id": "http://pasture-one-actor/actor",
      "background_image": null,
      "favicon": null,
      "hide_favorites": true,
      "hide_followers": false,
      "hide_followers_count": false,
      "hide_follows": false,
      "hide_follows_count": false,
      "is_admin": false,
      "is_confirmed": true,
      "is_moderator": false,
      "is_suggested": false,
      "relationship": {},
      "skip_thread_containment": false,
      "tags": []
    },
    "source": {
      "fields": [],
      "note": "",
      "pleroma": {
        "actor_type": "Person",
        "discoverable": false
      },
      "sensitive": false
    },
    "statuses_count": 146,
    "url": "http://pasture-one-actor/actor",
    "username": "actor"
  },
  "reblog": null,
  "language": null,
  "created_at": "2025-10-04T13:44:01.000Z",
  "muted": false,
  "replies_count": 0
}

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://akkoma/users/witch",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/X_f6e4p5WgI",
  "published": "2025-10-04T13:44:01Z",
  "object": {
    "type": "Note",
    "attributedTo": [
      "http://pasture-one-actor/actor"
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://akkoma/users/witch"
    ],
    "id": "http://pasture-one-actor/object/JxrheuvNZYk",
    "published": "2025-10-04T13:44:01Z",
    "content": "single element as list"
  }
}
akkoma
{
  "reblogged": false,
  "pleroma": {
    "content": {
      "text/plain": "single element as list"
    },
    "context": "http://pasture-one-actor/object/JxrheuvNZYk",
    "conversation_id": 1862757173,
    "direct_conversation_id": null,
    "emoji_reactions": [],
    "expires_at": null,
    "in_reply_to_account_acct": null,
    "local": false,
    "parent_visible": false,
    "pinned_at": null,
    "spoiler_text": {
      "text/plain": ""
    },
    "thread_muted": false
  },
  "in_reply_to_account_id": null,
  "uri": "http://pasture-one-actor/object/JxrheuvNZYk",
  "edited_at": null,
  "text": null,
  "quote": null,
  "favourited": false,
  "pinned": false,
  "emojis": [],
  "id": "AyrpMI9Rjxt6a3MZA8",
  "mentions": [
    {
      "acct": "witch",
      "id": "AyrovJNFF3epxbqVEG",
      "url": "http://akkoma/users/witch",
      "username": "witch"
    }
  ],
  "content": "single element as list",
  "akkoma": {
    "source": null
  },
  "spoiler_text": "",
  "media_attachments": [],
  "url": "http://pasture-one-actor/object/JxrheuvNZYk",
  "reblogs_count": 0,
  "visibility": "public",
  "bookmarked": false,
  "card": null,
  "favourites_count": 0,
  "in_reply_to_id": null,
  "quote_id": null,
  "poll": null,
  "emoji_reactions": [],
  "application": null,
  "tags": [],
  "sensitive": false,
  "account": {
    "acct": "actor@pasture-one-actor",
    "akkoma": {
      "instance": {
        "favicon": null,
        "name": "pasture-one-actor",
        "nodeinfo": {}
      },
      "permit_followback": false,
      "status_ttl_days": null
    },
    "avatar": "http://akkoma/images/avi.png",
    "avatar_static": "http://akkoma/images/avi.png",
    "bot": false,
    "created_at": "2025-10-04T13:40:35.000Z",
    "display_name": "Test Actor",
    "emojis": [],
    "fields": [],
    "followers_count": 0,
    "following_count": 0,
    "fqn": "actor@pasture-one-actor",
    "header": "http://akkoma/images/banner.png",
    "header_static": "http://akkoma/images/banner.png",
    "id": "Ayrp3GhKv5rSZS8yA4",
    "last_status_at": "2025-10-04",
    "locked": false,
    "note": "",
    "pleroma": {
      "also_known_as": [],
      "ap_id": "http://pasture-one-actor/actor",
      "background_image": null,
      "favicon": null,
      "hide_favorites": true,
      "hide_followers": false,
      "hide_followers_count": false,
      "hide_follows": false,
      "hide_follows_count": false,
      "is_admin": false,
      "is_confirmed": true,
      "is_moderator": false,
      "is_suggested": false,
      "relationship": {},
      "skip_thread_containment": false,
      "tags": []
    },
    "source": {
      "fields": [],
      "note": "",
      "pleroma": {
        "actor_type": "Person",
        "discoverable": false
      },
      "sensitive": false
    },
    "statuses_count": 147,
    "url": "http://pasture-one-actor/actor",
    "username": "actor"
  },
  "reblog": null,
  "language": null,
  "created_at": "2025-10-04T13:44:01.000Z",
  "muted": false,
  "replies_count": 0
}

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": [
    "http://akkoma/users/witch",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/tnYmzO_2Ih4",
  "published": "2025-10-04T13:44:02Z",
  "object": {
    "type": "Note",
    "attributedTo": [
      "http://pasture-one-actor/actor",
      "http://pasture-one-actor/second"
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://akkoma/users/witch"
    ],
    "id": "http://pasture-one-actor/object/uvkCPxJtmxg",
    "published": "2025-10-04T13:44:02Z",
    "content": "two elements as list"
  }
}
akkoma
{
  "reblogged": false,
  "pleroma": {
    "content": {
      "text/plain": "two elements as list"
    },
    "context": "http://pasture-one-actor/object/uvkCPxJtmxg",
    "conversation_id": 2007765186,
    "direct_conversation_id": null,
    "emoji_reactions": [],
    "expires_at": null,
    "in_reply_to_account_acct": null,
    "local": false,
    "parent_visible": false,
    "pinned_at": null,
    "spoiler_text": {
      "text/plain": ""
    },
    "thread_muted": false
  },
  "in_reply_to_account_id": null,
  "uri": "http://pasture-one-actor/object/uvkCPxJtmxg",
  "edited_at": null,
  "text": null,
  "quote": null,
  "favourited": false,
  "pinned": false,
  "emojis": [],
  "id": "AyrpMLLxpsgQVkF6ae",
  "mentions": [
    {
      "acct": "witch",
      "id": "AyrovJNFF3epxbqVEG",
      "url": "http://akkoma/users/witch",
      "username": "witch"
    }
  ],
  "content": "two elements as list",
  "akkoma": {
    "source": null
  },
  "spoiler_text": "",
  "media_attachments": [],
  "url": "http://pasture-one-actor/object/uvkCPxJtmxg",
  "reblogs_count": 0,
  "visibility": "public",
  "bookmarked": false,
  "card": null,
  "favourites_count": 0,
  "in_reply_to_id": null,
  "quote_id": null,
  "poll": null,
  "emoji_reactions": [],
  "application": null,
  "tags": [],
  "sensitive": false,
  "account": {
    "acct": "actor@pasture-one-actor",
    "akkoma": {
      "instance": {
        "favicon": null,
        "name": "pasture-one-actor",
        "nodeinfo": {}
      },
      "permit_followback": false,
      "status_ttl_days": null
    },
    "avatar": "http://akkoma/images/avi.png",
    "avatar_static": "http://akkoma/images/avi.png",
    "bot": false,
    "created_at": "2025-10-04T13:40:35.000Z",
    "display_name": "Test Actor",
    "emojis": [],
    "fields": [],
    "followers_count": 0,
    "following_count": 0,
    "fqn": "actor@pasture-one-actor",
    "header": "http://akkoma/images/banner.png",
    "header_static": "http://akkoma/images/banner.png",
    "id": "Ayrp3GhKv5rSZS8yA4",
    "last_status_at": "2025-10-04",
    "locked": false,
    "note": "",
    "pleroma": {
      "also_known_as": [],
      "ap_id": "http://pasture-one-actor/actor",
      "background_image": null,
      "favicon": null,
      "hide_favorites": true,
      "hide_followers": false,
      "hide_followers_count": false,
      "hide_follows": false,
      "hide_follows_count": false,
      "is_admin": false,
      "is_confirmed": true,
      "is_moderator": false,
      "is_suggested": false,
      "relationship": {},
      "skip_thread_containment": false,
      "tags": []
    },
    "source": {
      "fields": [],
      "note": "",
      "pleroma": {
        "actor_type": "Person",
        "discoverable": false
      },
      "sensitive": false
    },
    "statuses_count": 148,
    "url": "http://pasture-one-actor/actor",
    "username": "actor"
  },
  "reblog": null,
  "language": null,
  "created_at": "2025-10-04T13:44:02.000Z",
  "muted": false,
  "replies_count": 0
}

Example 4

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "http://akkoma/users/witch",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/kyuxaVLIinQ",
  "published": "2025-10-04T13:44:03Z",
  "object": {
    "type": "Note",
    "attributedTo": {
      "type": "Person",
      "id": "http://pasture-one-actor/actor"
    },
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://akkoma/users/witch"
    ],
    "id": "http://pasture-one-actor/object/GgpiKXCl87o",
    "published": "2025-10-04T13:44:03Z",
    "content": "a dictionary"
  }
}
akkoma
{
  "reblogged": false,
  "pleroma": {
    "content": {
      "text/plain": "a dictionary"
    },
    "context": "http://pasture-one-actor/object/GgpiKXCl87o",
    "conversation_id": 1616923995,
    "direct_conversation_id": null,
    "emoji_reactions": [],
    "expires_at": null,
    "in_reply_to_account_acct": null,
    "local": false,
    "parent_visible": false,
    "pinned_at": null,
    "spoiler_text": {
      "text/plain": ""
    },
    "thread_muted": false
  },
  "in_reply_to_account_id": null,
  "uri": "http://pasture-one-actor/object/GgpiKXCl87o",
  "edited_at": null,
  "text": null,
  "quote": null,
  "favourited": false,
  "pinned": false,
  "emojis": [],
  "id": "AyrpMOp8vqo3H6uwzI",
  "mentions": [
    {
      "acct": "witch",
      "id": "AyrovJNFF3epxbqVEG",
      "url": "http://akkoma/users/witch",
      "username": "witch"
    }
  ],
  "content": "a dictionary",
  "akkoma": {
    "source": null
  },
  "spoiler_text": "",
  "media_attachments": [],
  "url": "http://pasture-one-actor/object/GgpiKXCl87o",
  "reblogs_count": 0,
  "visibility": "public",
  "bookmarked": false,
  "card": null,
  "favourites_count": 0,
  "in_reply_to_id": null,
  "quote_id": null,
  "poll": null,
  "emoji_reactions": [],
  "application": null,
  "tags": [],
  "sensitive": false,
  "account": {
    "acct": "actor@pasture-one-actor",
    "akkoma": {
      "instance": {
        "favicon": null,
        "name": "pasture-one-actor",
        "nodeinfo": {}
      },
      "permit_followback": false,
      "status_ttl_days": null
    },
    "avatar": "http://akkoma/images/avi.png",
    "avatar_static": "http://akkoma/images/avi.png",
    "bot": false,
    "created_at": "2025-10-04T13:40:35.000Z",
    "display_name": "Test Actor",
    "emojis": [],
    "fields": [],
    "followers_count": 0,
    "following_count": 0,
    "fqn": "actor@pasture-one-actor",
    "header": "http://akkoma/images/banner.png",
    "header_static": "http://akkoma/images/banner.png",
    "id": "Ayrp3GhKv5rSZS8yA4",
    "last_status_at": "2025-10-04",
    "locked": false,
    "note": "",
    "pleroma": {
      "also_known_as": [],
      "ap_id": "http://pasture-one-actor/actor",
      "background_image": null,
      "favicon": null,
      "hide_favorites": true,
      "hide_followers": false,
      "hide_followers_count": false,
      "hide_follows": false,
      "hide_follows_count": false,
      "is_admin": false,
      "is_confirmed": true,
      "is_moderator": false,
      "is_suggested": false,
      "relationship": {},
      "skip_thread_containment": false,
      "tags": []
    },
    "source": {
      "fields": [],
      "note": "",
      "pleroma": {
        "actor_type": "Person",
        "discoverable": false
      },
      "sensitive": false
    },
    "statuses_count": 149,
    "url": "http://pasture-one-actor/actor",
    "username": "actor"
  },
  "reblog": null,
  "language": null,
  "created_at": "2025-10-04T13:44:03.000Z",
  "muted": false,
  "replies_count": 0
}

Example 5

activity
{
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    {
      "Hashtag": "as:Hashtag",
      "sensitive": "as:sensitive"
    }
  ],
  "type": "Create",
  "actor": "http://pasture-one-actor/actor",
  "to": [
    "http://akkoma/users/witch",
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "id": "http://pasture-one-actor/activity/O7ozUVAPsqo",
  "published": "2025-10-04T13:44:03Z",
  "object": {
    "type": "Note",
    "attributedTo": [
      {
        "type": "Person",
        "id": "http://pasture-one-actor/actor"
      }
    ],
    "to": [
      "https://www.w3.org/ns/activitystreams#Public",
      "http://akkoma/users/witch"
    ],
    "id": "http://pasture-one-actor/object/d_QE8-LtpeQ",
    "published": "2025-10-04T13:44:03Z",
    "content": "a dictionary"
  }
}
akkoma
{
  "reblogged": false,
  "pleroma": {
    "content": {
      "text/plain": "a dictionary"
    },
    "context": "http://pasture-one-actor/object/d_QE8-LtpeQ",
    "conversation_id": 429836248,
    "direct_conversation_id": null,
    "emoji_reactions": [],
    "expires_at": null,
    "in_reply_to_account_acct": null,
    "local": false,
    "parent_visible": false,
    "pinned_at": null,
    "spoiler_text": {
      "text/plain": ""
    },
    "thread_muted": false
  },
  "in_reply_to_account_id": null,
  "uri": "http://pasture-one-actor/object/d_QE8-LtpeQ",
  "edited_at": null,
  "text": null,
  "quote": null,
  "favourited": false,
  "pinned": false,
  "emojis": [],
  "id": "AyrpMS2Mz8AXF083WK",
  "mentions": [
    {
      "acct": "witch",
      "id": "AyrovJNFF3epxbqVEG",
      "url": "http://akkoma/users/witch",
      "username": "witch"
    }
  ],
  "content": "a dictionary",
  "akkoma": {
    "source": null
  },
  "spoiler_text": "",
  "media_attachments": [],
  "url": "http://pasture-one-actor/object/d_QE8-LtpeQ",
  "reblogs_count": 0,
  "visibility": "public",
  "bookmarked": false,
  "card": null,
  "favourites_count": 0,
  "in_reply_to_id": null,
  "quote_id": null,
  "poll": null,
  "emoji_reactions": [],
  "application": null,
  "tags": [],
  "sensitive": false,
  "account": {
    "acct": "actor@pasture-one-actor",
    "akkoma": {
      "instance": {
        "favicon": null,
        "name": "pasture-one-actor",
        "nodeinfo": {}
      },
      "permit_followback": false,
      "status_ttl_days": null
    },
    "avatar": "http://akkoma/images/avi.png",
    "avatar_static": "http://akkoma/images/avi.png",
    "bot": false,
    "created_at": "2025-10-04T13:40:35.000Z",
    "display_name": "Test Actor",
    "emojis": [],
    "fields": [],
    "followers_count": 0,
    "following_count": 0,
    "fqn": "actor@pasture-one-actor",
    "header": "http://akkoma/images/banner.png",
    "header_static": "http://akkoma/images/banner.png",
    "id": "Ayrp3GhKv5rSZS8yA4",
    "last_status_at": "2025-10-04",
    "locked": false,
    "note": "",
    "pleroma": {
      "also_known_as": [],
      "ap_id": "http://pasture-one-actor/actor",
      "background_image": null,
      "favicon": null,
      "hide_favorites": true,
      "hide_followers": false,
      "hide_followers_count": false,
      "hide_follows": false,
      "hide_follows_count": false,
      "is_admin": false,
      "is_confirmed": true,
      "is_moderator": false,
      "is_suggested": false,
      "relationship": {},
      "skip_thread_containment": false,
      "tags": []
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