diff --git a/generate-proof.sh b/generate-proof.sh
index a8c4d87..d85d70f 100755
--- a/generate-proof.sh
+++ b/generate-proof.sh
@@ -102,13 +102,13 @@ else
     exit 1
 fi
 
-# Append previous commit hash to the proof file for chaining
-if [ -f "$OUTPUT_FILE" ]; then
-    PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
-    if [ -n "$PREV_COMMIT" ]; then
-        echo "" >> "$OUTPUT_FILE"
-        echo "# Previous commit: $PREV_COMMIT" >> "$OUTPUT_FILE"
-    fi
+# Get previous commit hash for chaining (before appending to proof file)
+PREV_COMMIT=$(git rev-parse HEAD^1 2>/dev/null || echo "")
+
+# Store previous commit hash in a separate metadata file for chaining
+if [ -n "$PREV_COMMIT" ]; then
+    echo "$PREV_COMMIT" > "$(dirname "$OUTPUT_FILE")/prev-commit.txt"
+    echo "Chaining info saved: $PREV_COMMIT"
 fi
 
 echo "Proof generated for commit: $COMMIT_HASH"
diff --git a/test3.txt b/test3.txt
new file mode 100644
index 0000000..8f4eebf
--- /dev/null
+++ b/test3.txt
@@ -0,0 +1 @@
+# Test chaining