diff --git a/services/comfyui_history.py b/services/comfyui_history.py
index 2e93eb5..7252e36 100644
--- a/services/comfyui_history.py
+++ b/services/comfyui_history.py
@@ -34,13 +34,13 @@ def _pick_string(payload: Dict[str, Any], *keys: str) -> str:
 
 
 def _pick_asset_hash(image_ref: Dict[str, Any]) -> str:
-    asset_hash = _pick_string(image_ref, "asset_hash")
+    asset_hash = _pick_string(image_ref, "asset_hash", "hash")
     if asset_hash:
         return asset_hash
 
     nested = image_ref.get("asset")
     if isinstance(nested, dict):
-        return _pick_string(nested, "asset_hash")
+        return _pick_string(nested, "asset_hash", "hash")
     return ""
 
 
diff --git a/tests/test_comfyui_history_parsing.py b/tests/test_comfyui_history_parsing.py
index 7a8f063..22480b0 100644
--- a/tests/test_comfyui_history_parsing.py
+++ b/tests/test_comfyui_history_parsing.py
@@ -104,6 +104,80 @@ class TestComfyUIHistoryParsing(unittest.TestCase):
         self.assertFalse(images[0]["asset_api_required"])
         self.assertEqual(images[0]["resolution"], "view")
 
+    def test_extract_images_accepts_top_level_hash_alias(self):
+        from services.comfyui_history import extract_images
+
+        history_item = {
+            "outputs": {
+                "2": {
+                    "images": [
+                        {
+                            "filename": "hash-alias.png",
+                            "type": "output",
+                            "hash": "blake3:alias123",
+                        }
+                    ]
+                }
+            }
+        }
+
+        images = extract_images(history_item)
+        self.assertEqual(len(images), 1)
+        self.assertEqual(images[0]["filename"], "hash-alias.png")
+        self.assertEqual(images[0]["asset_hash"], "blake3:alias123")
+        self.assertIn("filename=blake3%3Aalias123", images[0]["view_url"])
+        self.assertFalse(images[0]["asset_api_required"])
+        self.assertEqual(images[0]["resolution"], "view")
+
+    def test_extract_images_accepts_nested_hash_alias(self):
+        from services.comfyui_history import extract_images
+
+        history_item = {
+            "outputs": {
+                "2": {
+                    "images": [
+                        {
+                            "name": "nested-hash-alias.png",
+                            "asset": {
+                                "hash": "blake3:nested-alias",
+                            },
+                        }
+                    ]
+                }
+            }
+        }
+
+        images = extract_images(history_item)
+        self.assertEqual(len(images), 1)
+        self.assertEqual(images[0]["filename"], "nested-hash-alias.png")
+        self.assertEqual(images[0]["asset_hash"], "blake3:nested-alias")
+        self.assertIn("filename=blake3%3Anested-alias", images[0]["view_url"])
+        self.assertFalse(images[0]["asset_api_required"])
+        self.assertEqual(images[0]["resolution"], "view")
+
+    def test_extract_images_prefers_asset_hash_over_hash_alias(self):
+        from services.comfyui_history import extract_images
+
+        history_item = {
+            "outputs": {
+                "2": {
+                    "images": [
+                        {
+                            "filename": "preferred.png",
+                            "asset_hash": "blake3:preferred",
+                            "hash": "blake3:alias",
+                        }
+                    ]
+                }
+            }
+        }
+
+        images = extract_images(history_item)
+        self.assertEqual(len(images), 1)
+        self.assertEqual(images[0]["asset_hash"], "blake3:preferred")
+        self.assertIn("filename=blake3%3Apreferred", images[0]["view_url"])
+        self.assertNotIn("filename=blake3%3Aalias", images[0]["view_url"])
+
     def test_extract_images_preserves_asset_api_only_refs_as_explicit_no_go_contract(
         self,
     ):