Loqi[cwebber] @jaywink So another option is, maybe, to use fragment identifiers. Here's an example:
```
{"@context": "https://www.w3.org/ns/activitystreams",
"type": "Create",
"id": "https://social.example/alyssa/posts/49e2d03d-b53a-4c4c-a95c-94a6abf45a19...
