update

docs/nips/C7.md

@@ -0,0 +1,29 @@
+NIP-C7
+======
+
+Chats
+-----
+
+`draft` `optional`
+
+A chat message is a `kind 9` event.
+
+```json
+{
+  "kind": 9,
+  "content": "GM",
+  "tags": []
+}
+```
+
+A reply to a `kind 9` is an additional `kind 9` which quotes the parent using a `q` tag.
+
+```json
+{
+  "kind": 9,
+  "content": "nostr:nevent1...\nyes",
+  "tags": [
+    ["q", <event-id>, <relay-url>, <pubkey>]
+  ]
+}
+```