diff --git a/idhub/models.py b/idhub/models.py
index b7c26fa..ee7ebed 100644
--- a/idhub/models.py
+++ b/idhub/models.py
@@ -529,7 +529,7 @@ class VerificableCredential(models.Model):
         context = {
             'vc_id': self.id,
             'issuer_did': self.issuer_did.did,
-            'subject_did': self.subject_did.did,
+            'subject_did': self.subject_did and self.subject_did.did or '',
             'issuance_date': issuance_date,
             'first_name': self.user.first_name,
             'last_name': self.user.last_name,
diff --git a/oidc4vp/forms.py b/oidc4vp/forms.py
index 18ca7ac..7c04255 100644
--- a/oidc4vp/forms.py
+++ b/oidc4vp/forms.py
@@ -1,9 +1,13 @@
+import json
 import requests
+
 from django import forms
 from django.conf import settings
 from django.template.loader import get_template
+from django.utils.translation import gettext_lazy as _
+from django.core.exceptions import ValidationError
 
-from utils.idhub_ssikit import issue_verifiable_presentation
+from utils.idhub_ssikit import create_verifiable_presentation
 from oidc4vp.models import Organization
 
 
@@ -33,34 +37,36 @@ class AuthorizeForm(forms.Form):
             )
     def clean(self):
         data = super().clean()
-        import pdb; pdb.set_trace()
         self.list_credentials = []
         for c in self.credentials:
             if str(c.id) == data.get(c.schema.type.lower()):
+                if c.status is not c.Status.ISSUED.value or not c.data:
+                    txt = _('There are some problems with this credentials')
+                    raise ValidationError(txt)
+
                 self.list_credentials.append(c)
+
         return data
 
     def save(self, commit=True):
         if not self.list_credentials:
             return
 
-        did = self.list_credentials[0].subject_did
-        vp_template = get_template('credentials/verifiable_presentation.json')
-
-        # self.vp = issue_verifiable_presentation(
-        #     vp_template: Template,
-        #     vc_list: list[str],
-        #     jwk_holder: str,
-        #     holder_did: str)
-
-        self.vp = issue_verifiable_presentation(
-            vp_template,
-            self.list_credentials,
-            did.key_material,
-            did.did)
+        self.get_verificable_presentation()
 
         if commit:
-            return org.send(self.vp)
+            return self.org.send(self.vp)
 
         return
 
+    def get_verificable_presentation(self):
+        did = self.list_credentials[0].subject_did
+        vp_template = get_template('credentials/verifiable_presentation.json')
+        vc_list = json.dumps([json.loads(x.data) for x in self.list_credentials])
+
+        context = {
+            "holder_did": did.did,
+            "verifiable_credential_list": vc_list
+        }
+        unsigned_vp = vp_template.render(context)
+        self.vp = create_verifiable_presentation(did.key_material, unsigned_vp)
diff --git a/oidc4vp/models.py b/oidc4vp/models.py
index 5dae13e..4111c18 100644
--- a/oidc4vp/models.py
+++ b/oidc4vp/models.py
@@ -71,13 +71,13 @@ class Organization(models.Model):
             url=self.response_uri.strip("/"),
         )
         auth = (self.my_client_id, self.my_client_secret)
+        # import pdb; pdb.set_trace()
         return requests.post(url, data=vp, auth=auth)
 
     def demand_authorization(self):
         """
           Send the a request for start a process of Verifier
         """
-        # import pdb; pdb.set_trace()
         url = "{url}/verify?demand_uri={redirect_uri}".format(
             url=self.response_uri.strip("/"),
             redirect_uri=settings.RESPONSE_URI
diff --git a/oidc4vp/templates/credentials/verifiable_presentation.json b/oidc4vp/templates/credentials/verifiable_presentation.json
index 752affb..a55b769 100644
--- a/oidc4vp/templates/credentials/verifiable_presentation.json
+++ b/oidc4vp/templates/credentials/verifiable_presentation.json
@@ -7,5 +7,5 @@
     "VerifiablePresentation"
   ],
   "holder": "{{ holder_did }}",
-  "verifiableCredential": {{ verifiable_credential_list }}
+  "verifiableCredential": {{ verifiable_credential_list|safe }}
 }
diff --git a/utils/idhub_ssikit/__init__.py b/utils/idhub_ssikit/__init__.py
index 35464b3..cc3e9b4 100644
--- a/utils/idhub_ssikit/__init__.py
+++ b/utils/idhub_ssikit/__init__.py
@@ -94,6 +94,18 @@ def issue_verifiable_presentation(vp_template: Template, vc_list: list[str], jwk
     return asyncio.run(inner())
 
 
+def create_verifiable_presentation(jwk_holder: str, unsigned_vp: str) -> str:
+    async def inner():
+        signed_vp = await didkit.issue_presentation(
+            unsigned_vp,
+            '{"proofFormat": "ldp"}',
+            jwk_holder
+        )
+        return signed_vp
+
+    return asyncio.run(inner())
+
+
 def verify_presentation(vp):
     """
     Returns a (bool, str) tuple indicating whether the credential is valid.