diff --git a/src/Lib/Serialization.js b/src/Lib/Serialization.js
new file mode 100644
index 0000000000..7e668b3b7d
--- /dev/null
+++ b/src/Lib/Serialization.js
@@ -0,0 +1,5 @@
+"use strict";
+
+const Buffer = require("buffer/").Buffer;
+
+exports._hexToBytes = (hex) => Buffer.from(hex, "hex");
diff --git a/src/Lib/Serialization.purs b/src/Lib/Serialization.purs
new file mode 100644
index 0000000000..4705dda728
--- /dev/null
+++ b/src/Lib/Serialization.purs
@@ -0,0 +1,14 @@
+module Lib.Serialization
+  ( Buffer
+  , Hex(..)
+  , _hexToBytes
+  ) where
+
+import Prelude
+
+newtype Hex
+  = Hex String
+
+foreign import data Buffer :: Type
+
+foreign import _hexToBytes :: Hex -> Buffer