diff --git a/debian/control b/debian/control
--- a/debian/control
+++ b/debian/control
@@ -23,7 +23,7 @@
                python3-sphinxcontrib.httpdomain,
                python3-yaml,
                python3-swh.core (>= 0.0.40~),
-               python3-swh.model (>= 0.0.23~),
+               python3-swh.model (>= 0.0.24~),
                python3-swh.storage (>= 0.0.101~),
                python3-swh.indexer.storage (>= 0.0.52~),
                python3-swh.vault (>= 0.0.20~)
@@ -33,7 +33,7 @@
 Package: python3-swh.web
 Architecture: all
 Depends: python3-swh.core (>= 0.0.40~),
-         python3-swh.model (>= 0.0.23~),
+         python3-swh.model (>= 0.0.24~),
          python3-swh.storage (>= 0.0.101~),
          python3-swh.indexer.storage (>= 0.0.52~),
          python3-swh.vault (>= 0.0.20~),
diff --git a/requirements-swh.txt b/requirements-swh.txt
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1,5 +1,5 @@
 swh.core >= 0.0.40
-swh.model >= 0.0.23
+swh.model >= 0.0.24
 swh.storage >= 0.0.101
 swh.vault >= 0.0.20
 swh.indexer.storage >= 0.0.52
diff --git a/swh/web/common/utils.py b/swh/web/common/utils.py
--- a/swh/web/common/utils.py
+++ b/swh/web/common/utils.py
@@ -13,7 +13,8 @@
 from django.core import urlresolvers
 from django.http import QueryDict
 
-from swh.model.fields.hashes import validate_sha1_git
+from swh.model.exceptions import ValidationError
+from swh.model.identifiers import persistent_identifier
 from swh.web.common import service
 from swh.web.common.exc import BadInputExc
 
@@ -264,33 +265,20 @@
             (content/directory/release/revision/snapshot)
         object_id (str): the swh object id (hexadecimal representation
             of its hash value)
-        schem_version (int): the scheme version of the swh
+        scheme_version (int): the scheme version of the swh
             persistent identifiers
 
-    Returns: str: the swh object persistent identifier
+    Returns:
+        str: the swh object persistent identifier
 
     Raises:
         BadInputExc if the provided parameters do not enable to
             generate a valid identifier
     """
-    swh_id = 'swh:%s:' % scheme_version
-    if object_type == 'content':
-        swh_id += 'cnt:'
-    elif object_type == 'directory':
-        swh_id += 'dir:'
-    elif object_type == 'release':
-        swh_id += 'rel:'
-    elif object_type == 'revision':
-        swh_id += 'rev:'
-    elif object_type == 'snapshot':
-        swh_id += 'snp:'
-    else:
-        raise BadInputExc('Invalid object type (%s) for swh persistent id' %
-                          object_type)
     try:
-        validate_sha1_git(object_id)
-        swh_id += object_id
-    except Exception:
-        raise BadInputExc('Invalid object id (%s) for swh persistent id' %
-                          object_id)
-    return swh_id
+        swh_id = persistent_identifier(object_type, object_id, scheme_version)
+    except ValidationError as e:
+        raise BadInputExc('Invalid object (%s) for swh persistent id. %s' %
+                          (object_id, e))
+    else:
+        return swh_id
diff --git a/swh/web/tests/common/test_utils.py b/swh/web/tests/common/test_utils.py
--- a/swh/web/tests/common/test_utils.py
+++ b/swh/web/tests/common/test_utils.py
@@ -152,8 +152,8 @@
 
         with self.assertRaises(BadInputExc) as cm:
             utils.get_swh_persistent_id('foo', sha1_git)
-        self.assertIn('Invalid object type', cm.exception.args[0])
+        self.assertIn('Invalid object', cm.exception.args[0])
 
         with self.assertRaises(BadInputExc) as cm:
             utils.get_swh_persistent_id(swh_object_type, 'not a valid id')
-        self.assertIn('Invalid object id', cm.exception.args[0])
+        self.assertIn('Invalid object', cm.exception.args[0])