diff --git a/programs/mpl-asset/src/utils.rs b/programs/mpl-asset/src/utils.rs
new file mode 100644
index 00000000..e829d81a
--- /dev/null
+++ b/programs/mpl-asset/src/utils.rs
@@ -0,0 +1,4 @@
+pub trait DataBlob {
+    fn get_initial_size() -> usize;
+    fn get_size(&self) -> usize;
+}