diff --git a/CHIPs/chip-0028.md b/CHIPs/chip-0028.md
index 0e20afdf..c9828118 100644
--- a/CHIPs/chip-0028.md
+++ b/CHIPs/chip-0028.md
@@ -159,13 +159,9 @@ This CHIP:
 }
 ```
 
-## Test Cases
-
-[todo]
-
 ## Reference Implementation
 
-[todo]
+This CHIP is implemented in [blind_signer_tl.py](https://github.com/Chia-Network/chia-blockchain/blob/385916a6a29c5124155b43cb7cfe48c6ec7b3590/chia/wallet/util/blind_signer_tl.py).
 
 ## Security