#!/usr/bin/env python3

from electrum import keystore
import sys

mnemonic = ' '.join(sys.argv[1: ])

if not keystore.bip39_is_checksum_valid(mnemonic)[0]:
    sys.exit(1)

k = keystore.from_bip39_seed(mnemonic, "", "m/84'/0'/0'")
print(k.xprv)