diff --git a/tests/test_interoperability.py b/tests/test_interoperability.py
new file mode 100644
index 0000000..632cec8
--- /dev/null
+++ b/tests/test_interoperability.py
@@ -0,0 +1,23 @@
+import json
+import didkit
+import multicodec
+import multiformats
+import nacl.encoding
+
+from did import generate_keys, generate_did
+
+
+def test_key_from_didkit():
+    key = didkit.generate_ed25519_key()
+    did_didkit = didkit.key_to_did("key", key)
+    did_pyvckit = generate_did(key)
+    assert did_didkit == did_pyvckit
+
+
+def test_key_from_pyvckit():
+    key = generate_keys()
+    did_didkit = didkit.key_to_did("key", key)
+    did_pyvckit = generate_did(key)
+    assert did_didkit == did_pyvckit
+
+