update testnet bip44 derivation path

electrum/base_wizard.py

@@ -432,7 +432,7 @@ def derivation_and_script_type_dialog(self, f):
             # For segwit, a custom path is used, as there is no standard at all.
             default_choice_idx = 2
             choices = [
-                ('standard',   'legacy multisig (p2sh)',            normalize_bip32_derivation("m/45'/0")),
+                ('standard',   'legacy multisig (p2sh)',            normalize_bip32_derivation(f"m/45'/{constants.net.BIP44_COIN_TYPE}'/0")),
                 ('p2wsh-p2sh', 'p2sh-segwit multisig (p2wsh-p2sh)', purpose48_derivation(0, xtype='p2wsh-p2sh')),
                 ('p2wsh',      'native segwit multisig (p2wsh)',    purpose48_derivation(0, xtype='p2wsh')),
             ]

electrum/plugins/hw_wallet/plugin.py

@@ -26,7 +26,7 @@
 
 from typing import TYPE_CHECKING, Dict, List, Union, Tuple, Sequence, Optional, Type
 from functools import partial
-
+from electrum import constants
 from electrum.plugin import BasePlugin, hook, Device, DeviceMgr, DeviceInfo
 from electrum.i18n import _
 from electrum.bitcoin import is_address, opcodes
@@ -245,7 +245,7 @@ def get_xpub(self, bip32_path: str, xtype) -> str:
     def request_root_fingerprint_from_device(self) -> str:
         # digitalbitbox (at least) does not reveal xpubs corresponding to unhardened paths
         # so ask for a direct child, and read out fingerprint from that:
-        child_of_root_xpub = self.get_xpub("m/44'/88'/0'", xtype='standard')
+        child_of_root_xpub = self.get_xpub(f"m/44'/{constants.net.BIP44_COIN_TYPE}'/0'", xtype='standard')
         root_fingerprint = BIP32Node.from_xkey(child_of_root_xpub).fingerprint.hex().lower()
         return root_fingerprint
 

electrum/plugins/ledger/ledger.py

@@ -6,6 +6,7 @@
 
 from electrum import ecc
 from electrum import bip32
+from electrum import constants
 from electrum.crypto import hash_160
 from electrum.bitcoin import int_to_hex, var_int, is_segwit_script_type, push_data
 from electrum.bip32 import BIP32Node, convert_bip32_intpath_to_strpath
@@ -702,7 +703,7 @@ def setup_device(self, device_info, wizard, purpose):
         device_id = device_info.device.id_
         client = self.scan_and_create_client_for_device(device_id=device_id, wizard=wizard)
         wizard.run_task_without_blocking_gui(
-            task=lambda: client.get_xpub("m/44'/88'/0'", 'standard'))  # TODO replace by direct derivation once Nano S > 1.1
+            task=lambda: client.get_xpub(f"m/44'/{constants.net.BIP44_COIN_TYPE}'/0'", 'standard'))  # TODO replace by direct derivation once Nano S > 1.1
         return client
 
     def get_xpub(self, device_id, derivation, xtype, wizard):

electrum/storage.py

@@ -35,10 +35,11 @@
 
 from .wallet_db import WalletDB
 from .logging import Logger
+from . import constants
 
 
 def get_derivation_used_for_hw_device_encryption():
-    return ("m/44'/88'"
+    return (f"m/44'/{constants.net.BIP44_COIN_TYPE}'"
             "/4541509'"      # ascii 'ELE'  as decimal ("BIP43 purpose")
             "/1112098098'")  # ascii 'BIE2' as decimal