diff --git a/middleware/app_be/views/rest_api.py b/middleware/app_be/views/rest_api.py
index 414ec7b..a46c500 100644
--- a/middleware/app_be/views/rest_api.py
+++ b/middleware/app_be/views/rest_api.py
@@ -3,6 +3,7 @@ import logging
 import json
 
 from app_be.services.dropboxservice import DropboxService
+from app_be.services.hashservice import create_sha512
 from app_be.services.wrapperservice import WrapperService
 from app_be.views.mongo_db import MongoManager
 
@@ -65,11 +66,23 @@ class ImageEndpoint:
                 del metadata['_id']
 
         dropbox_image_bytes = DropboxService.read_file(metadata['filename'])
-
         if dropbox_image_bytes is None:
             return JsonResponse({'Result': 'Error - could not find image in dropbox.', 'id': identifier}, status=404,
                                 safe=False)
 
+        stored_hash = metadata.get('sha512', '')
+        actual_dropbox_hash = create_sha512(dropbox_image_bytes)
+
+        if stored_hash != actual_dropbox_hash:
+            return JsonResponse('Stored hash does not match generated one! '
+                                'stored: {} actual: {}'.format(stored_hash, actual_dropbox_hash), safe=False)
+
+        # TODO - check hash of MinIO image, too
+        # actual_minio_hash = ''  # create_sha512(minio_image_bytes)
+        # if stored_hash != actual_minio_hash:
+        #     return JsonResponse('Stored hash does not match generated one! '
+        #                         'stored: {} actual: {}'.format(stored_hash, actual_minio_hash), safe=False)
+
         payload = {
             'id': identifier,
             'metadata': metadata,
@@ -94,9 +107,7 @@ class ImageEndpoint:
         col = db.metadata
 
         decoded_image = WrapperService.unwrap_file(b64encoded_image)
-        h = hashlib.sha512()
-        h.update(decoded_image)
-        metadata['sha512'] = h.hexdigest()
+        metadata['sha512'] = create_sha512(decoded_image)
 
         try:
             metadata['identifier'] = identifier
@@ -106,7 +117,6 @@ class ImageEndpoint:
         except:
             print("Could not insert Metadata")
 
-
         if not DropboxService.create_file(filename, decoded_image):
             print("Could not save image to dropbox")