Add book reviews

Author: Jon Staab

85.md

@@ -6,34 +6,36 @@ Reviews
 
 This NIP describes several different types of `review` which follow a single set of conventions.
 
-In all cases, the `content` field SHOULD include a human-readable review.
-
-Review events' `d` tag indicates the object of the review. This MUST take the form of a [NIP 73](./73.md) id. This allows for reviews of events, people, topics, relays, or external guids without ambiguity.
+In all cases, the `content` field SHOULD include a human-readable review. A review event's `d` tag indicates the object of the review.
 
 # Ratings
 
 Tags MAY contain additional `rating` tags each of which should have a `value` between 0 and 1,
 and an optional `mark` specifying an attribute of the thing being reviewed.
 
 # Review Kinds
+
 ## Event
 
-Kind `31986` indicates a review of any event generated by a `pubkey`. 
-The `e` tag MUST be the `id` of the event.
-The `p` tag MUST be the `pubkey` of the event.
+Kind `31986` indicates a review of any event generated by a `pubkey`.
+
+- The `d` tag MUST be the `id` of the event.
+- The `p` tag MUST be the `pubkey` of the event.
 
 ```json
 {
   "kind": 31986,
   "content": "Always publishing quality information about breaking news all over the world.",
   ...
   "tags": [
-    ["d", `<event id>:<pubkey>`]
-    ["e", "dcd59..464a2"]
-    ["p", "968c5..ad7a4"],
+    ["d", "<event-id>"]
+    ["p", "<pubkey>"],
+    ["k", "1"],
     ["rating", "0.8"]
   ],
 }
+```
+
 ## Relays
 
 Kind `31987` indicates a review of a relay. The `d` tag MUST be the url of the relay.
@@ -50,3 +52,20 @@ Kind `31987` indicates a review of a relay. The `d` tag MUST be the url of the r
   ],
 }
 ```
+
+
+## Books
+
+Kind `31985` indicates a review of a book. The `d` tag MUST be a [NIP 73](./73.md) ISBN content ID.
+
+```json
+{
+  "kind": 31985,
+  "tags": [
+    ["d","isbn:9781529100624"],
+    ["k", "isbn"],
+    ["rating", "0.8"]
+  ],
+  "content": "Good book",
+}
+```