diff --git a/entrypoint.sh b/entrypoint.sh
index 83a4f8e..ef732e5 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -2,11 +2,13 @@
 
 dir="$(dirname "${INPUT_FILES}")"
 glob="$(basename "${INPUT_FILES}")"
+# Pass these through sort so we can have deterministic output indexing
 if [ "${glob}" = "**" ]; then
-  all_files="$(find "$dir" -type f)"
+  all_files="$(find "$dir" -type f |sort)"
 else
-  all_files="$(find "$dir" -maxdepth 1 -name "${glob}")"
+  all_files="$(find "$dir" -maxdepth 1 -name "${glob}" |sort)"
 fi
+i=0
 while IFS=  read -r f; do
   sign_dir="$(dirname "$f")"
   sign_file="$(basename "$f")"
@@ -35,8 +37,13 @@ while IFS=  read -r f; do
     echo "Fetching key from ${INPUT_PUBLIC_KEY}"
     curl -sLo /tmp/public_key "${INPUT_PUBLIC_KEY}"
     ec=$?; if [ $ec -ne 0 ]; then exit $ec; fi
-    rekor upload --artifact "$f" --signature "${dest_sig}" --pki-format x509 --public-key /tmp/public_key
-    ec=$?; if [ $ec -ne 0 ]; then exit $ec; fi
+    output=$(rekor upload --artifact "$f" --signature "${dest_sig}" --pki-format x509 --public-key /tmp/public_key)
+    ec=$?; echo "$output"; if [ $ec -ne 0 ]; then exit $ec; fi
+    echo "INDEX_${i}=$(echo "$output"|cut -d, -f1|cut -d\  -f5)" >> "${GITHUB_OUTPUT}"
+    echo "URL_${i}=$(echo "$output"|cut -d: -f2-|cut -d\  -f2)" >> "${GITHUB_OUTPUT}"
+    echo "SOURCE_${i}=${f}" >> "${GITHUB_OUTPUT}"
+    echo "SIG_${i}=${dest_sig}" >> "${GITHUB_OUTPUT}"
+    i=$((i+1))
   fi
 done <<ALLFILES_INPUT
 $all_files