Update Default Key Derivation Path

- use /44'/145'/0' per standard, instead of zero path /44'/0'/0'

core/src/main/java/org/bitcoinj/wallet/DeterministicKeyChain.java

@@ -114,11 +114,9 @@ public class DeterministicKeyChain implements EncryptableKeyChain {
     public static final ImmutableList<ChildNumber> ACCOUNT_ZERO_PATH = ImmutableList.of(ChildNumber.ZERO_HARDENED);
     public static final ImmutableList<ChildNumber> EXTERNAL_SUBPATH = ImmutableList.of(ChildNumber.ZERO);
     public static final ImmutableList<ChildNumber> INTERNAL_SUBPATH = ImmutableList.of(ChildNumber.ONE);
-    public static final ImmutableList<ChildNumber> EXTERNAL_PATH = HDUtils.concat(ACCOUNT_ZERO_PATH, EXTERNAL_SUBPATH);
-    public static final ImmutableList<ChildNumber> INTERNAL_PATH = HDUtils.concat(ACCOUNT_ZERO_PATH, INTERNAL_SUBPATH);
-    // m / 44' / 0' / 0'
-    public static final ImmutableList<ChildNumber> BIP44_ACCOUNT_ZERO_PATH =
-            ImmutableList.of(new ChildNumber(44, true), ChildNumber.ZERO_HARDENED, ChildNumber.ZERO_HARDENED);
+    // m / 44' / 145' / 0'
+    public static final ImmutableList<ChildNumber> BIP44_ACCOUNT_145_PATH =
+            ImmutableList.of(new ChildNumber(44, true), new ChildNumber(145, true), ChildNumber.ZERO_HARDENED);
 
     // We try to ensure we have at least this many keys ready and waiting to be handed out via getKey().
     // See docs for getLookaheadSize() for more info on what this is for. The -1 value means it hasn't been calculated
@@ -420,7 +418,7 @@ protected DeterministicKeyChain(KeyCrypter crypter, KeyParameter aesKey, Determi
 
     /** Override in subclasses to use a different account derivation path */
     protected ImmutableList<ChildNumber> getAccountPath() {
-        return ACCOUNT_ZERO_PATH;
+        return BIP44_ACCOUNT_145_PATH;
     }
 
     private DeterministicKey encryptNonLeaf(KeyParameter aesKey, DeterministicKeyChain chain,