diff --git a/src/m.wxsy.net/check.sh b/src/m.wxsy.net/check.sh
new file mode 100755
index 0000000..7eafab5
--- /dev/null
+++ b/src/m.wxsy.net/check.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+cd `dirname $0`
+
+diff <(xz -cdk ./archive/catalog.json.xz | jq .) <(cat ./data/catalog.json | jq .)
+diff <(cd ./data/html/ && sha1sum * | sort -u) <(cat ./archive/html.sha1sum | sort -u)
+diff <(cd ./data/json/ && sha1sum * | sort -u) <(cat ./archive/json.sha1sum | sort -u)
+diff <(xz -cdk ./archive/xxrs.json.xz | jq .) <(cat ./data/xxrs.json | jq .)