Add xx tag

1 files changed, 3 insertions, 1 deletions

diff --git a/94.md b/94.md
index c5e0f18..b512af4 100644
--- a/94.md
+++ b/94.md
@@ -15,7 +15,8 @@ This NIP specifies the use of the `1063` event type, having in `content` a descr
 * `url` the url to download the file
 * `m` a string indicating the data type of the file. The [MIME types](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types) format must be used, and they should be lowercase.
 * `"aes-256-gcm"` (optional)  key and nonce for AES-GCM encryption with tagSize always 128bits
-* `x` containing the SHA-256 hexencoded string of the file.
+* `x` containing the SHA-256 hexencoded string of the **original** file before any server transformations
+* `xx` containing the SHA-256 hexencoded string of the **transformed** file after any server transformations
 * `size` (optional) size of file in bytes
 * `dim` (optional) size of file in pixels in the form `<width>x<height>`
 * `magnet` (optional) URI to magnet file
@@ -37,6 +38,7 @@ This NIP specifies the use of the `1063` event type, having in `content` a descr
     ["aes-256-gcm",<key>, <iv>],
     ["m", <MIME type>],
     ["x",<Hash SHA-256>],
+    ["xx",<Hash SHA-256>],
     ["size", <size of file in bytes>],
     ["dim", <size of file in pixels>],
     ["magnet",<magnet URI> ],