diff --git a/basicswap/chainparams.py b/basicswap/chainparams.py
index 7ed0935..82d7ad4 100644
--- a/basicswap/chainparams.py
+++ b/basicswap/chainparams.py
@@ -251,6 +251,7 @@ chainparams = {
             "rpcport": 8336,
             "pubkey_address": 52,
             "script_address": 13,
+            "key_prefix": 180,
             "hrp": "nc",
             "bip44": 7,
             "min_amount": 100000,
@@ -260,6 +261,7 @@ chainparams = {
             "rpcport": 18336,
             "pubkey_address": 111,
             "script_address": 196,
+            "key_prefix": 239,
             "hrp": "tn",
             "bip44": 1,
             "min_amount": 100000,
@@ -270,6 +272,7 @@ chainparams = {
             "rpcport": 18443,
             "pubkey_address": 111,
             "script_address": 196,
+            "key_prefix": 239,
             "hrp": "ncrt",
             "bip44": 1,
             "min_amount": 100000,