diff --git a/backend/src/decentriq.py b/backend/src/decentriq.py
index 40fa3ab..2b4afd8 100644
--- a/backend/src/decentriq.py
+++ b/backend/src/decentriq.py
@@ -116,6 +116,7 @@ def pandas_script_merge_cohorts(merged_cohorts: dict[str, list[str]], all_cohort
 )
 async def create_compute_dcr(
     cohorts_request: dict[str, Any],
+    airlock: bool = True,
     user: Any = Depends(get_current_user),
 ) -> dict[str, Any]:
     """Create a Data Clean Room for computing with the cohorts requested using Decentriq SDK"""
@@ -157,8 +158,9 @@ async def create_compute_dcr(
         .with_name(dcr_title)
         .with_owner(settings.decentriq_email)
         .with_description("A data clean room to run computations on cohorts for the iCARE4CVD project")
-        .with_airlock()
     )
+    if airlock:
+        builder.with_airlock()
 
     preview_nodes = []
     # Convert cohort variables to decentriq schema
@@ -168,14 +170,15 @@ async def create_compute_dcr(
         builder.add_node_definition(TableDataNodeDefinition(name=data_node_id, columns=get_cohort_schema(cohort), is_required=True))
         data_nodes.append(data_node_id)
 
-        # Add airlock node to make it easy to access small part of the dataset
-        preview_node_id = f"preview-{data_node_id}"
-        builder.add_node_definition(PreviewComputeNodeDefinition(
-            name=preview_node_id,
-            dependency=data_node_id,
-            quota_bytes=1048576, # 10MB
-        ))
-        preview_nodes.append(preview_node_id)
+        if airlock:
+            # Add airlock node to make it easy to access small part of the dataset
+            preview_node_id = f"preview-{data_node_id}"
+            builder.add_node_definition(PreviewComputeNodeDefinition(
+                name=preview_node_id,
+                dependency=data_node_id,
+                quota_bytes=1048576, # 10MB
+            ))
+            preview_nodes.append(preview_node_id)
 
         # Add data owners to provision the data
         for owner in cohort.cohort_email:
@@ -207,7 +210,8 @@ async def create_compute_dcr(
         builder.add_participant(user["email"], analyst_of=[f"prepare-{cohort_id}"])
 
     # Add users permissions
-    builder.add_participant(user["email"], analyst_of=preview_nodes)
+    if airlock:
+        builder.add_participant(user["email"], analyst_of=preview_nodes)
     builder.add_participant(settings.decentriq_email, data_owner_of=data_nodes)
 
     # Build and publish DCR
diff --git a/cohort-explorer-ontology.ttl b/cohort-explorer-ontology.ttl
index b6f7efd..1f2b416 100644
--- a/cohort-explorer-ontology.ttl
+++ b/cohort-explorer-ontology.ttl
@@ -9,7 +9,7 @@
 
 icare: a owl:Ontology ;
     rdfs:label "iCARE4CVD ontology" ;
-    dcterms:license <https://www.gnu.org/licenses/lgpl-3.0> ;
+    dcterms:license <https://creativecommons.org/licenses/by-sa/4.0/> ;
     vann:preferredNamespacePrefix "icare" ;
     vann:preferredNamespaceUri "https://w3id.org/icare4cvd/" ;
     rdfs:comment "OWL ontology for the iCARE4CVD project, to represent Cohorts tabular file containing Variables for individuals in the cohort (metadata, measurement, etc)"@en .
diff --git a/frontend/src/pages/upload.tsx b/frontend/src/pages/upload.tsx
index 116245b..a3f68aa 100644
--- a/frontend/src/pages/upload.tsx
+++ b/frontend/src/pages/upload.tsx
@@ -9,6 +9,7 @@ import {apiUrl} from '@/utils';
 export default function UploadPage() {
   const {cohortsData, fetchCohortsData, userEmail} = useCohorts();
   const [cohortId, setCohortId] = useState('');
+  const [enableAirlock, setEnableAirlock] = useState(false);
   const [metadataFile, setMetadataFile]: any = useState(null);
   const [dataFile, setDataFile]: any = useState(null);
   const [errorMessage, setErrorMessage] = useState('');
@@ -53,6 +54,7 @@ export default function UploadPage() {
     const formData = new FormData();
     formData.append('cohort_id', cohortId);
     formData.append('cohort_dictionary', metadataFile);
+    formData.append('airlock', enableAirlock ? 'true' : 'false');
     if (dataFile) formData.append('cohort_data', dataFile);
     try {
       const response = await fetch(`${apiUrl}/upload-cohort`, {
@@ -159,6 +161,19 @@ export default function UploadPage() {
           </div>
           <input type="file" id="metadataFile" className="mt-2" onChange={handleMetadataFileChange} required />
 
+          <div>
+            <label htmlFor="enableAirlock" className="flex items-center gap-2 cursor-pointer">
+              <input
+                id="enableAirlock"
+                type="checkbox"
+                checked={enableAirlock}
+                onChange={(e) => setEnableAirlock(e.target.checked)}
+                className="checkbox"
+              />
+              Enable Airlock
+            </label>
+          </div>
+
           {/* Upload data file */}
           {/* {metadataFile && <>
             <div className="flex items-center">