NIP-71: Add addressable video events (kinds 32221, 32222)

Extends NIP-71 to support addressable video events for content that may need updates after publication. This enables:

- Metadata corrections without republishing
- URL migration when hosting changes
- Preservation of imported content IDs from legacy platforms
- Platform migration tracking

Adds kinds 32221 (normal videos) and 32222 (short videos) with required 'd' tag for unique identification and optional 'origin' tag for tracking imported content.

1 files changed, 2 insertions, 0 deletions

diff --git a/README.md b/README.md
index 397eceb..b5051b5 100644
--- a/README.md
+++ b/README.md
@@ -248,6 +248,8 @@ They exist to document what may be implemented by [Nostr](https://github.com/nos
 | `31925`       | Calendar Event RSVP             | [52](52.md)                            |
 | `31989`       | Handler recommendation          | [89](89.md)                            |
 | `31990`       | Handler information             | [89](89.md)                            |                         |
+| `32221`       | Addressable Video Event         | [71](71.md)                            |
+| `32222`       | Addressable Short Video Event   | [71](71.md)                            |
 | `32267`       | Software Application            |                                        |                        |
 | `34550`       | Community Definition            | [72](72.md)                            |
 | `38383`       | Peer-to-peer Order events       | [69](69.md)                            |