diff --git a/morphir/sdk/core/jvm/src/morphir/sdk/UUID.scala b/morphir/sdk/core/jvm/src/morphir/sdk/UUID.scala
index d83b9af..ce3d802 100644
--- a/morphir/sdk/core/jvm/src/morphir/sdk/UUID.scala
+++ b/morphir/sdk/core/jvm/src/morphir/sdk/UUID.scala
@@ -17,10 +17,10 @@ object UUID {
 
   val Nil: UUID = MUUID.Nil
 
-  val dnsNamespace  = "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
-  val urlNamespace  = "6ba7b811-9dad-11d1-80b4-00c04fd430c8"
-  val oidNamespace  = "6ba7b812-9dad-11d1-80b4-00c04fd430c8"
-  val x500Namespace = "6ba7b814-9dad-11d1-80b4-00c04fd430c8"
+  val dnsNamespace: UUID  = memeid.UUID.fromString("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
+  val urlNamespace: UUID  = memeid.UUID.fromString("6ba7b811-9dad-11d1-80b4-00c04fd430c8")
+  val oidNamespace: UUID  = memeid.UUID.fromString("6ba7b812-9dad-11d1-80b4-00c04fd430c8")
+  val x500Namespace: UUID = memeid.UUID.fromString("6ba7b814-9dad-11d1-80b4-00c04fd430c8")
 
   def compare(uuid1: UUID)(uuid2: UUID): Int = uuid1.compareTo(uuid2)
   def forName(s: String)(uuid: UUID): UUID   = MUUID.V5(uuid, s)
diff --git a/morphir/sdk/core/test/jvm/src/UUIDSpec.scala b/morphir/sdk/core/test/jvm/src/UUIDSpec.scala
index a411199..157ec45 100644
--- a/morphir/sdk/core/test/jvm/src/UUIDSpec.scala
+++ b/morphir/sdk/core/test/jvm/src/UUIDSpec.scala
@@ -69,6 +69,24 @@ object UUIDSpec extends MorphirBaseSpec {
         val u2        = UUID.forName(name2)(namespace)
         assertTrue(u1 != u2)
       }
+    ),
+    suite("Known namespaces")(
+      test("dnsNamespace should be a valid UUID") {
+        val uuid = UUID.dnsNamespace
+        assertTrue(uuid.isInstanceOf[UUID.UUID])
+      },
+      test("urlNamespace should be a valid UUID") {
+        val uuid = UUID.urlNamespace
+        assertTrue(uuid.isInstanceOf[UUID.UUID])
+      },
+      test("oidNamespace should be a valid UUID") {
+        val uuid = UUID.oidNamespace
+        assertTrue(uuid.isInstanceOf[UUID.UUID])
+      },
+      test("x500Namespace should be a valid UUID") {
+        val uuid = UUID.x500Namespace
+        assertTrue(uuid.isInstanceOf[UUID.UUID])
+      }
     )
   )