diff --git a/idhub/models.py b/idhub/models.py
index 10e0ceb..378872f 100644
--- a/idhub/models.py
+++ b/idhub/models.py
@@ -588,13 +588,15 @@ class VerificableCredential(models.Model):
         #     cache.get("KEY_DIDS"),
         #     settings.SECRET_KEY,
         # )
+
+        # hash of credential without sign
+        self.hash = hashlib.sha3_256(self.render(domain).encode()).hexdigest()
         data = sign_credential(
             self.render(domain),
             self.issuer_did.get_key_material(issuer_pass)
         )
         if self.eidas1_did:
             self.data = data
-            self.hash = hashlib.sha3_256(self.data.encode()).hexdigest()
         else:
             self.data = self.user.encrypt_data(data, password)
 
@@ -606,13 +608,15 @@ class VerificableCredential(models.Model):
             issuance_date = self.issued_on.strftime(format)
 
         cred_path = 'credentials'
+        sid = self.id
         if self.eidas1_did:
             cred_path = 'public/credentials'
+            sid = self.hash
 
         url_id = "{}/{}/{}".format(
             domain,
             cred_path,
-            self.id
+            sid
         )
 
         context = {
diff --git a/idhub/user/views.py b/idhub/user/views.py
index 49d5229..aa0b2a7 100644
--- a/idhub/user/views.py
+++ b/idhub/user/views.py
@@ -26,6 +26,7 @@ from django.shortcuts import get_object_or_404, redirect
 from django.urls import reverse_lazy
 from django.http import HttpResponse
 from django.contrib import messages
+from django.core.cache import cache
 from django.conf import settings
 from idhub.user.forms import (
     ProfileForm,
@@ -132,9 +133,9 @@ class CredentialPdfView(MyWallet, TemplateView):
     subtitle = _('Credential management')
     icon = 'bi bi-patch-check-fill'
     file_name = "certificate.pdf"
-    _pss = '123456'
 
     def get(self, request, *args, **kwargs):
+        self.admin_validated = cache.get("KEY_DIDS")
         pk = kwargs['pk']
         self.user = self.request.user
         self.object = get_object_or_404(