mention optional thumbhash alongside blurhash on nip17 and nip68.HEADmaster

1 files changed, 1 insertions, 0 deletions

diff --git a/17.md b/17.md
index 3ccdc77..6e44b0d 100644
--- a/17.md
+++ b/17.md
@@ -80,6 +80,7 @@ Kind `15` is used for sending encrypted file event messages:
 - `ox` containing the SHA-256 hexencoded string of the file before encryption.
 - `size` (optional) size of the encrypted file in bytes
 - `dim` (optional) size in pixels in the form `<width>x<height>`
+- `thumbhash`(optional) the [thumbhash](https://evanw.github.io/thumbhash/) to show while the client is loading the file
 - `blurhash`(optional) the [blurhash](https://github.com/woltapp/blurhash) to show while the client is loading the file
 - `thumb` (optional) URL of thumbnail with same aspect ratio (encrypted with the same key, nonce)
 - `fallback` (optional) zero or more fallback file sources in case `url` fails (encrypted with the same key, nonce)