public DeterministicKey deterministicKey() {
    final DeterministicSeed seed =
        new DeterministicSeed(mnemonicCode, null, passphrase, new Date().getTime());
    final DeterministicKeyChain chain = DeterministicKeyChain.builder().seed(seed).build();
    final List<ChildNumber> keyPath = HDUtils.parsePath("M/44H/60H/0H/0/0");

    return chain.getKeyByPath(keyPath, true);
  }