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+NIP-24
+======
+
+Extra metadata fields and tags
+------------------------------
+
+`draft` `optional` `author:fiatjaf`
+
+This NIP defines extra optional fields added to events.
+
+kind 0
+======
+
+These are extra fields not specified in NIP-01 that may be present in the stringified JSON of metadata events:
+
+  - `display_name`: a bigger name with richer characters than `name`. Implementations should fallback to `name` when this is not available.
+  - `website`: a web URL related in any way to the event author.
+
+tags
+====
+
+These tags may be present in multiple event kinds. Whenever a different meaning is not specified by some more specific NIP, they have the following meanings:
+
+  - `r`: a web URL the event is referring to in some way