This is one of many protocol behaviors described in ActivityPub.

Identifier

urn:uuid:e69ce2d6-2946-4513-b475-10690767a734

Content

The server MUST remove the bto and/or bcc properties, if they exist, from the ActivityStreams object before delivery

Origin

prefix Location: https://dustycloud.org/likes/345

The server MUST remove the bto and/or bcc properties, if they exist, from the ActivityStreams object before delivery
 
suffix , but MUST utilize the addressing originally stored on the bto / bcc properties for determining recipients in delivery.

https://www.w3.org/TR/activitypub/

JSON

{
  "id": "urn:uuid:e69ce2d6-2946-4513-b475-10690767a734",
  "type": "Behavior",
  "uuid": "e69ce2d6-2946-4513-b475-10690767a734",
  "content": "The server MUST remove the bto and/or bcc properties, if they exist, from the ActivityStreams object before delivery\n",
  "context": [
    "https://www.w3.org/TR/activitypub/",
    {
      "name": "Client to server interaction"
    },
    {
      "name": "server delivering activities clients post to an actor's outbox"
    }
  ],
  "origin": {
    "source": "https://www.w3.org/TR/activitypub/",
    "section": {
      "id": "https://www.w3.org/TR/activitypub/#x6-client-to-server-interactions",
      "branch": [
        6
      ]
    },
    "selector": {
      "type": "TextQuoteSelector",
      "prefix": "Location: https://dustycloud.org/likes/345\n",
      "exact": "The server MUST remove the bto and/or bcc properties, if they exist, from the ActivityStreams object before delivery\n",
      "suffix": ", but MUST utilize the addressing originally stored on the bto / bcc properties for determining recipients in delivery. \n"
    }
  },
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    "https://socialweb.coop/ns/testing/context.json"
  ]
}