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+NIP-70
+======
+
+Collaborative Events
+--------------------
+
+`draft` `optional` `author:leandro21b`
+
+## Description:
+
+Collaborative Events are events involving several users that can be useful for applications such as publications involving several users, creation of content involving several content producers, publications by companies with the signature of several partners, public digital contracts, etc.
+
+The event is created and signed by its creator, then he distributes the event for the other users involved to sign, sending can be done in several ways, for example through `Encrypted Direct Message KIND-4`, after the event is signed by all parties involved, it can be sent to the relays.
+
+## Example:
+
+```json
+{
+  "id": <id>,
+  "pubkey": [<pubkey1>, <pubkey2>],
+  "created_at": <created_at>,
+  "kind": 70,
+  "tags": [],
+  "content": <content>,
+  "sig": [<sig1>, <sig2>]
+}
+```
+
+Collaborative events are identified by `KIND-70`