code: function getAddressNetwork (address) {
    const prefix = base58.decode(address).toString('hex').substring(0, 2).toUpperCase()
    const networkKey = findKey(networks,
      network => [network.pubKeyHash, network.scriptHash].includes(prefix))
    return networks[networkKey]
  }
docs: Get a network object from an address
  @param {string} address The bitcoin address
  @return {Network}