diff --git a/bin/check-signify.sh b/bin/check-signify.sh
new file mode 100644
index 0000000..29b1494
--- /dev/null
+++ b/bin/check-signify.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+for D in *.*/ *.*/*/; do (cd $D && pwd && signify -C -x SHA256.sig | grep -v OK; ); done