diff --git a/dmp-backend/core/src/main/java/eu/eudat/data/DmpReferenceEntity.java b/dmp-backend/core/src/main/java/eu/eudat/data/DmpReferenceEntity.java
index aa0f98e06..ded6a3c48 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/data/DmpReferenceEntity.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/data/DmpReferenceEntity.java
@@ -5,6 +5,7 @@ import jakarta.persistence.Entity;
 import jakarta.persistence.Id;
 import jakarta.persistence.Table;
 
+import java.time.Instant;
 import java.util.UUID;
 
 @Entity
@@ -26,6 +27,15 @@ public class DmpReferenceEntity {
 
     @Column(name = "data")
     private String data;
+
+    @Column(name = "created_at", nullable = false)
+    private Instant createdAt;
+    public static final String _createdAt = "createdAt";
+
+    @Column(name = "updated_at", nullable = false)
+    private Instant updatedAt;
+    public static final String _updatedAt = "updatedAt";
+
     public static final String _data = "data";
 
     public UUID getId() {
@@ -59,4 +69,20 @@ public class DmpReferenceEntity {
     public void setData(String data) {
         this.data = data;
     }
+
+    public Instant getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(Instant createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public Instant getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(Instant updatedAt) {
+        this.updatedAt = updatedAt;
+    }
 }
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/DmpReference.java b/dmp-backend/core/src/main/java/eu/eudat/model/DmpReference.java
index 30b4eaeb3..e194011a4 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/DmpReference.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/DmpReference.java
@@ -1,5 +1,6 @@
 package eu.eudat.model;
 
+import java.time.Instant;
 import java.util.UUID;
 
 public class DmpReference {
@@ -16,6 +17,13 @@ public class DmpReference {
     private String data;
     public static final String _data = "data";
 
+    private Instant createdAt;
+
+    public static final String _createdAt = "createdAt";
+    private Instant updatedAt;
+
+    public static final String _updatedAt = "updatedAt";
+
     public UUID getId() {
         return id;
     }
@@ -47,4 +55,12 @@ public class DmpReference {
     public void setData(String data) {
         this.data = data;
     }
+
+    public Instant getCreatedAt() { return createdAt;}
+
+    public void setCreatedAt(Instant createdAt) {this.createdAt = createdAt;}
+
+    public Instant getUpdatedAt() {return updatedAt;}
+
+    public void setUpdatedAt(Instant updatedAt) {this.updatedAt = updatedAt;}
 }
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/builder/DmpReferenceBuilder.java b/dmp-backend/core/src/main/java/eu/eudat/model/builder/DmpReferenceBuilder.java
index 16460d303..35995dabc 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/builder/DmpReferenceBuilder.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/builder/DmpReferenceBuilder.java
@@ -63,6 +63,8 @@ public class DmpReferenceBuilder extends BaseBuilder<DmpReference, DmpReferenceE
             DmpReference m = new DmpReference();
             if (fields.hasField(this.asIndexer(DmpReference._id))) m.setId(d.getId());
             if (fields.hasField(this.asIndexer(DmpReference._data))) m.setData(d.getData());
+            if (fields.hasField(this.asIndexer(DmpReference._createdAt))) m.setCreatedAt(d.getCreatedAt());
+            if (fields.hasField(this.asIndexer(DmpReference._updatedAt))) m.setUpdatedAt(d.getUpdatedAt());
             if(!referenceFields.isEmpty() && referenceItemsMap != null && referenceItemsMap.containsKey(d.getReferenceId())){
                 m.setReference(referenceItemsMap.get(d.getReferenceId()));
             }
diff --git a/dmp-backend/core/src/main/java/eu/eudat/query/DmpReferenceQuery.java b/dmp-backend/core/src/main/java/eu/eudat/query/DmpReferenceQuery.java
index 8177067e4..d4ef92663 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/query/DmpReferenceQuery.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/query/DmpReferenceQuery.java
@@ -3,6 +3,7 @@ package eu.eudat.query;
 import eu.eudat.authorization.AuthorizationFlags;
 import eu.eudat.commons.scope.user.UserScope;
 import eu.eudat.data.DmpReferenceEntity;
+import eu.eudat.model.DmpReference;
 import gr.cite.commons.web.authz.service.AuthorizationService;
 import gr.cite.tools.data.query.FieldResolver;
 import gr.cite.tools.data.query.QueryBase;
@@ -14,6 +15,7 @@ import org.springframework.beans.factory.config.ConfigurableBeanFactory;
 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Component;
 
+import java.time.Instant;
 import java.util.*;
 
 @Component
@@ -137,15 +139,19 @@ public class DmpReferenceQuery extends QueryBase<DmpReferenceEntity> {
         item.setReferenceId(QueryBase.convertSafe(tuple, columns, DmpReferenceEntity._dmpId, UUID.class));
         item.setReferenceId(QueryBase.convertSafe(tuple, columns, DmpReferenceEntity._referenceId, UUID.class));
         item.setData(QueryBase.convertSafe(tuple, columns, DmpReferenceEntity._data, String.class));
+        item.setCreatedAt(QueryBase.convertSafe(tuple, columns, DmpReferenceEntity._createdAt, Instant.class));
+        item.setUpdatedAt(QueryBase.convertSafe(tuple, columns, DmpReferenceEntity._updatedAt, Instant.class));
         return item;
     }
 
     @Override
     protected String fieldNameOf(FieldResolver item) {
-        if (item.match(DmpReferenceEntity._id)) return DmpReferenceEntity._id;
-        else if (item.prefix(DmpReferenceEntity._dmpId)) return DmpReferenceEntity._dmpId;
-        else if (item.prefix(DmpReferenceEntity._referenceId)) return DmpReferenceEntity._referenceId;
-        else if (item.match(DmpReferenceEntity._data)) return DmpReferenceEntity._data;
+        if (item.match(DmpReference._id)) return DmpReferenceEntity._id;
+        else if (item.prefix(DmpReference._dmp)) return DmpReferenceEntity._dmpId;
+        else if (item.prefix(DmpReference._reference)) return DmpReferenceEntity._referenceId;
+        else if (item.match(DmpReference._data)) return DmpReferenceEntity._data;
+        else if (item.match(DmpReference._createdAt)) return DmpReferenceEntity._createdAt;
+        else if (item.match(DmpReference._updatedAt)) return DmpReferenceEntity._updatedAt;
         else return null;
     }