Add FEP-d2da

README.md

@@ -12,3 +12,4 @@ Main repository: https://codeberg.org/fediverse/fep
 - [FEP-ae97: Client-side activity signing](./ae97/fep-ae97.md)
 - [FEP-7628: Move actor](./7628/fep-7628.md)
 - [FEP-ef61: Portable Objects](./ef61/fep-ef61.md)
+- [FEP-d2da: Aliases](./d2da/fep-d2da.md)

d2da/fep-d2da.md

@@ -0,0 +1,61 @@
+---
+slug: "d2da"
+authors: silverpill <@silverpill@mitra.social>
+status: DRAFT
+dateReceived: 1970-01-01
+---
+# FEP-d2da: Aliases
+
+
+## Summary
+
+How to specify alternative identifiers of an [ActivityPub] object.
+
+## Motivation
+
+- FEP-ef61 portable actors.
+- Discovery of a Webfinger address from an activitypub actor.
+- Preferred identifiers for displaying on client side.
+
+## aliases property
+
+The `aliases` property contains the list of alternative identifiers of an object.
+
+Example:
+
+```json
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    {
+      "xrd": "http://www.w3.org/2001/XMLSchema#",
+      "aliases": {
+        "@id": "xrd:Alias",
+        "@type": "@id",
+        "@container": "@list"
+      }
+    }
+  ],
+  "type": "Person",
+  "id": "https://social.example/actor",
+  "inbox": "https://social.example/actor/inbox",
+  "outbox": "https://social.example/actor/outbox",
+  "aliases": [
+    "https://alt.example/actor",
+    "acct:actor@social.example",
+    "dns:social.example"
+  ]
+}
+```
+
+## References
+
+- Christine Lemmer Webber, Jessica Tallon, [ActivityPub][ActivityPub], 2018
+
+[ActivityPub]: https://www.w3.org/TR/activitypub/
+
+## Copyright
+
+CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
+
+To the extent possible under law, the authors of this Fediverse Enhancement Proposal have waived all copyright and related or neighboring rights to this work.