diff --git a/bip-0375.mediawiki b/bip-0375.mediawiki
index 28c0a3cf..8cfded37 100644
--- a/bip-0375.mediawiki
+++ b/bip-0375.mediawiki
@@ -419,4 +419,8 @@ Use the provided [[bip-0375/test_runner.py|test runner]] to validate each test v
 
 ==Reference implementation==
 
-Todo
+A Python validation reference is provided in [[bip-0375/README.md|bip-0375/]].
+It implements the four sequential checks described in the Test Vectors section
+(PSBT structure, ECDH coverage via BIP374 DLEQ, input eligibility, and output
+script derivation) and is exercised by [[bip-0375/test_runner.py|test_runner.py]]
+against [[bip-0375/bip375_test_vectors.json|bip375_test_vectors.json]].