Document Damus repost as Event Copy

30.md

@@ -0,0 +1,21 @@
+NIP-30
+======
+
+Event Copy
+----------
+
+`draft` `optional` `author:jb55` `author:arthurfranca`
+
+An event of `kind 9` is used to copy any event from another pubkey. A copy
+allows its creator to keep content around even when the original gets deleted.
+
+The `content` of a copy event MUST be the stringified JSON of the whole original event.
+
+The copy event SHOULD include a `k` tag with the `kind` of the note that is
+being copied. This enables subscribing to a subset of copies.
+
+The copy event SHOULD include an `e` tag with the `id` of the note that is
+being copied. This allows the original author to know a specific event has been copied.
+
+The copy event SHOULD include a `p` tag with the `pubkey` of the event being
+copied to notify original author.

README.md

@@ -28,6 +28,7 @@ NIPs stand for **Nostr Implementation Possibilities**. They exist to document wh
 - [NIP-26: Delegated Event Signing](26.md)
 - [NIP-27: Text Note References](27.md)
 - [NIP-28: Public Chat](28.md)
+- [NIP-30: Event Copy](30.md)
 - [NIP-33: Parameterized Replaceable Events](33.md)
 - [NIP-36: Sensitive Content](36.md)
 - [NIP-39: External Identities in Profiles](39.md)
@@ -55,6 +56,7 @@ NIPs stand for **Nostr Implementation Possibilities**. They exist to document wh
 | 6             | Reposts                          | [18](18.md) |
 | 7             | Reaction                         | [25](25.md) |
 | 8             | Badge Award                      | [58](58.md) |
+| 9             | Event Copy                       | [30](30.md) |
 | 40            | Channel Creation                 | [28](28.md) |
 | 41            | Channel Metadata                 | [28](28.md) |
 | 42            | Channel Message                  | [28](28.md) |
@@ -114,6 +116,7 @@ When experimenting with kinds, keep in mind the classification introduced by [NI
 | g          | geohash                 |                   | [12](12.md)              |
 | nonce      | random                  |                   | [13](13.md)              |
 | subject    | subject                 |                   | [14](14.md)              |
+| k          | referenced event kind   |                   | [30](30.md)              |
 | d          | identifier              |                   | [33](33.md)              |
 | expiration | unix timestamp (string) |                   | [40](40.md)              |