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+NIP-76
+======
+
+`REPLACE` command for updating replaceables
+-------------------------------------------
+
+`draft` `optional`
+
+This NIP defines a new message, `REPLACE`, that clients can use to publish _replaceable_ and _addressable_ events to relays.
+
+It works like `EVENT`, but together with the event JSON, the client also sends the id of the event they are replacing.
+
+```jsonc
+["REPLACE", "<id-of-event-being-replaced>", "<new-event>"]
+```
+
+Upon receiving this message, relays should check if the `<id-of-event-being-replaced>` corresponds to the latest event id they have stored locally that corresponds to the new replaceable event being received.
+
+If it does correspond, it responds with an `OK` normally; otherwise it responds with something I'm not sure but that allows the client to fix its stuff.