diff --git a/config/fly-neuron-counts.json b/config/fly-neuron-counts.json
index f3bcdf4..80660a6 100644
--- a/config/fly-neuron-counts.json
+++ b/config/fly-neuron-counts.json
@@ -1,5 +1,5 @@
 {
-  "$comment": "Curated fundamentals for Drosophila neuron counts. Every figure verified against its primary paper on 2026-08-11 unless verified=false. THIS FILE IS THE OPERATIVE COPY: it ships in the image and is read in process, so a figure never depends on a network fetch succeeding and an answer is always reconstructible from the image digest. The mirror published at canonical_url is for the website and the MCP. Do not hard-code any of these numbers into application source.",
+  "$comment": "Curated fundamentals for Drosophila neuron counts. Every figure verified against its primary paper on 2026-08-11 unless verified=false. THIS FILE IS THE ONLY COPY THAT IS READ: it ships in the image and is loaded in process, so a figure never depends on a network fetch succeeding and an answer stays reconstructible from the image digest. There is deliberately NO published mirror — /data/ on virtualflybrain.org is a routed namespace (treated like /reports/, as a dataset id), so a static file there is unreachable. The prose article at www.virtualflybrain.org/docs/concepts/neuron-counts/ is for humans and for citation; it is not a data source. Curators edit this file. Do not hard-code any of these numbers into application source.",
   "id": "fly-neuron-counts",
   "title": "How many neurons are in the fly brain?",
   "compiled": "2026-08-11",
@@ -397,7 +397,6 @@
       "Berg2025_technique": "Technique reads 'serial block face SEM (SBFSEM)'. The paper describes enhanced focused ion beam SEM (eFIB-SEM), 8x8x8 nm isotropic. Likely a metadata error."
     }
   },
-  "canonical_url": "https://www.virtualflybrain.org/data/fly-neuron-counts.json",
   "region_map": {
     "brain": {
       "connectomes": [