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diff --git a/dbrepo-ui/components/identifier/Select.vue b/dbrepo-ui/components/identifier/Select.vue
index e5572866140858970c5141d40591af3dda5c389a..6ad3450a6ec29dc8225a45b4b8ed5ebbc4248c87 100644
--- a/dbrepo-ui/components/identifier/Select.vue
+++ b/dbrepo-ui/components/identifier/Select.vue
@@ -15,27 +15,21 @@
           :identifier="identifier" />
       </v-list-item-subtitle>
       <template v-slot:append>
-        <v-tooltip
-          v-if="identifier.status === 'published'"
-          :text="$t('pages.identifier.pid.title')"
-          left>
-          <template
-            v-slot:activator="{ props }">
-            <v-icon
-              color="primary"
-              v-bind="props">mdi-identifier</v-icon>
-          </template>
-        </v-tooltip>
-        <v-tooltip
-          v-else
-          :text="$t('pages.identifier.draft.title')"
-          left>
-          <template
-            v-slot:activator="{ props }">
-            <v-icon
-              v-bind="props">mdi-pencil-outline</v-icon>
-          </template>
-        </v-tooltip>
+        <v-list-item-action>
+          <v-tooltip
+            :text="identifier.status === 'published' ? $t('pages.identifier.pid.title') : $t('pages.identifier.draft.title')"
+            left>
+            <template
+              v-slot:activator="{ props }">
+              {{ formatTimestampUTCLabel(identifier.created) }}
+              <v-icon
+                :color="identifier.status === 'published' ? 'primary' : null"
+                v-bind="props">
+                {{ identifier.status === 'published' ? 'mdi-identifier' : 'mdi-pencil-outline' }}
+              </v-icon>
+            </template>
+          </v-tooltip>
+        </v-list-item-action>
       </template>
     </v-list-item>
   </div>
@@ -43,6 +37,7 @@
 
 <script>
 import Banner from '@/components/identifier/Banner.vue'
+import { formatTimestampUTCLabel } from '@/utils'
 import { useCacheStore } from '@/stores/cache.js'
 
 export default {
@@ -102,6 +97,7 @@ export default {
     this.init()
   },
   methods: {
+    formatTimestampUTCLabel,
     href (identifier) {
       if (!identifier) {
         return null
diff --git a/dbrepo-ui/pages/database/[database_id]/info.vue b/dbrepo-ui/pages/database/[database_id]/info.vue
index 89583c5f4f450d6462a6f4aaa5343fee3d184b82..0af35a5d3bee8dc572488c39f6ac22d9b5c4a6f9 100644
--- a/dbrepo-ui/pages/database/[database_id]/info.vue
+++ b/dbrepo-ui/pages/database/[database_id]/info.vue
@@ -272,7 +272,7 @@ export default {
       if (!this.database || !this.database.identifiers) {
         return []
       }
-      return this.database.identifiers.filter(i => i.query_id === this.$route.params.subset_id)
+      return this.database.identifiers.filter(i => i.database_id === this.$route.params.database_id)
     },
     pid () {
       return this.$route.query.pid
diff --git a/lib/java/dbrepo-core/src/main/java/at/ac/tuwien/ifs/dbrepo/core/api/identifier/IdentifierDto.java b/lib/java/dbrepo-core/src/main/java/at/ac/tuwien/ifs/dbrepo/core/api/identifier/IdentifierDto.java
index 35293a6d9e456522c9c9f366ad8f37c7b1dbbf1e..e52c05617dfabbe6510097d6ad56724632c84990 100644
--- a/lib/java/dbrepo-core/src/main/java/at/ac/tuwien/ifs/dbrepo/core/api/identifier/IdentifierDto.java
+++ b/lib/java/dbrepo-core/src/main/java/at/ac/tuwien/ifs/dbrepo/core/api/identifier/IdentifierDto.java
@@ -127,4 +127,7 @@ public class IdentifierDto {
     @Schema(example = "draft")
     private IdentifierStatusTypeDto status;
 
+    @NotNull
+    private Instant created;
+
 }
diff --git a/lib/python/dbrepo/api/dto.py b/lib/python/dbrepo/api/dto.py
index 3c80f1174d4cee48c7c9608c6cac9eb7de8b8418..474e60790ef6ca92bd79bd610bd0ba653d0d5465 100644
--- a/lib/python/dbrepo/api/dto.py
+++ b/lib/python/dbrepo/api/dto.py
@@ -658,18 +658,18 @@ class Identifier(BaseModel):
     publisher: str
     creators: List[Creator]
     titles: List[IdentifierTitle]
-    descriptions: List[IdentifierDescription]
-    funders: Optional[List[IdentifierFunder]] = field(default_factory=list)
+    descriptions: Optional[List[IdentifierDescription]] = None
+    funders: Optional[List[IdentifierFunder]] = None
     doi: Optional[str] = None
     language: Optional[str] = None
-    licenses: Optional[List[License]] = field(default_factory=list)
+    licenses: Optional[List[License]] = None
     query_id: Optional[str] = None
     table_id: Optional[str] = None
     view_id: Optional[str] = None
     query: Optional[str] = None
     query_normalized: Optional[str] = None
     execution: Optional[str] = None
-    related_identifiers: Optional[List[RelatedIdentifier]] = field(default_factory=list)
+    related_identifiers: Optional[List[RelatedIdentifier]] = None
     result_hash: Optional[str] = None
     result_number: Optional[int] = None
     publication_day: Optional[int] = None