text: ELECTRUM_VERSION = '3.3.8.1' # version of the client package
  APK_VERSION = '3.3.8.1'      # read by buildozer.spec
  
  PROTOCOL_VERSION = '1.4'     # protocol version requested
  
  # The hash of the mnemonic seed must begin with this
  SEED_PREFIX        = '01'      # Standard wallet
  SEED_PREFIX_SW     = '100'     # Segwit wallet
  SEED_PREFIX_2FA    = '101'     # Two-factor authentication
  SEED_PREFIX_2FA_SW = '102'     # Two-factor auth, using segwit
  
  
  def seed_prefix(seed_type):
      if seed_type == 'standard':
          return SEED_PREFIX
      elif seed_type == 'segwit':
          return SEED_PREFIX_SW
      elif seed_type == '2fa':
          return SEED_PREFIX_2FA
      elif seed_type == '2fa_segwit':
          return SEED_PREFIX_2FA_SW
      raise Exception(f"unknown seed_type: {seed_type}")
  