diff --git a/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingCompletedOutboxService.java b/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingCompletedOutboxService.java
index b8765e06b..06296b222 100644
--- a/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingCompletedOutboxService.java
+++ b/firstleg/src/main/java/com/baiyue/firstleg/service/LoadingCompletedOutboxService.java
@@ -372,11 +372,16 @@ public class LoadingCompletedOutboxService {
                 + "|" + value.getActualSkuQuantity()).collect(java.util.stream.Collectors.joining("\n"));
             int fragments = (int) sorted.stream().map(PalletRow::getAccountId).distinct().count();
             result.put(palletNo, new PalletManifest(1, sorted.size(), fragments,
-                EventPayloadHash.sha256(canonical.getBytes(StandardCharsets.UTF_8))));
+                manifestHash(canonical)));
         });
         return result;
     }
 
+    private String manifestHash(String canonical) {
+        String value = EventPayloadHash.sha256(canonical.getBytes(StandardCharsets.UTF_8));
+        return value.substring("sha256:".length());
+    }
+
     private static boolean dropship(String value) {
         return "ONE_CLICK_DROPSHIP".equals(value);
     }
diff --git a/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingCompletedOutboxServiceTest.java b/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingCompletedOutboxServiceTest.java
index 07ce90b3b..09ca1e1d2 100644
--- a/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingCompletedOutboxServiceTest.java
+++ b/firstleg/src/test/java/com/baiyue/firstleg/service/LoadingCompletedOutboxServiceTest.java
@@ -362,6 +362,9 @@ class LoadingCompletedOutboxServiceTest {
             .isEqualTo("BOX-A2");
         assertThat(event.payload().at("/orders/0/pallets/1/skuPackages/0/cartonMarks/0").asText())
             .isEqualTo("BOX-A1");
+        assertThat(event.payload().at("/orders/0/pallets/0/manifestHash").asText())
+            .matches("[0-9a-f]{64}")
+            .doesNotStartWith("sha256:");
     }
 
     @Test