Card: name the weights by file and sha256

README.md

@@ -59,7 +59,7 @@ Track2Rig starts from 3D point tracks. To make them from a video of one animal w
 | `examples/clips/pelican-spider_walk.npz` | npz | 2.7 MB | example |
 | `examples/clips/reference.json` | json | 4.2 KB | example |
 
-Weights version `2026-10-29` (the Hugging Face tag of the revision `models.json` pins). Newer weights are published as new dated versions; a published version never changes.
+The weights file `track2rig-v2.safetensors` has sha256 `f8a79263dc21d2af078c123fbf76c2cba85df4694100f6a6c5e8f7608f6094b6`.
 
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