diff --git a/dog-from-cat.mkv b/dog-from-cat.mkv
new file mode 100644
index 0000000..703e2c3
Binary files /dev/null and b/dog-from-cat.mkv differ
diff --git a/dog-from-cat.provenance.json b/dog-from-cat.provenance.json
new file mode 100644
index 0000000..5c25384
--- /dev/null
+++ b/dog-from-cat.provenance.json
@@ -0,0 +1,36 @@
+{
+  "minted_at": "2026-01-07T01:20:49.906611+00:00",
+  "minted_by": "@giles@artdag.rose-ash.com",
+  "output": {
+    "name": "dog-from-cat",
+    "content_hash": "772f26f9b4e80984788bc48f7c6eee0a1974966b2d4ee56a72d7c6586b3ac9d8",
+    "local_path": "/home/giles/artdag-art/dog-from-cat.mkv",
+    "url": null
+  },
+  "inputs": [
+    {
+      "name": "cat",
+      "content_hash": "33268b6e167deaf018cc538de12dbe562612b33e89a749391cef855b320a269b"
+    }
+  ],
+  "recipe": {
+    "name": "dog-cat",
+    "description": "Apply dog effect to cat"
+  },
+  "effects": [
+    {
+      "name": "effect:dog",
+      "content_hash": "d048fe313433eb4e38f0e24194ffae91b896ca3e6eed3e50b2cc37b7be495555"
+    }
+  ],
+  "infrastructure": {
+    "software": {
+      "name": "infra:artdag",
+      "content_hash": "96a5972de216aee12ec794dcad5f9360da2e676171eabf24a46dfe1ee5fee4b0"
+    },
+    "hardware": {
+      "name": "infra:giles-hp",
+      "content_hash": "964bf6e69dc4e2493f42375013caffe26404ec3cf8eb5d9bc170cd42a361523b"
+    }
+  }
+}
\ No newline at end of file