1 files changed, 13 insertions, 0 deletions
diff --git a/python-packages/order_utils/src/zero_ex/order_utils/signature_utils.py b/python-packages/order_utils/src/zero_ex/order_utils/signature_utils.py
new file mode 100644
index 000000000..7f4697106
--- /dev/null
+++ b/python-packages/order_utils/src/zero_ex/order_utils/signature_utils.py
@@ -0,0 +1,13 @@
+"""Signature utilities."""
+
+
+def ec_sign_order_hash():
+    """Signs an orderHash.
+
+    Returns its elliptic curve signature and signature type.  This method
+    currently supports TestRPC, Geth, and Parity above and below v1.6.6.
+
+    >>> ec_sign_order_hash()
+    'stub return value'
+    """
+    return "stub return value"