public function airshipLand()
{
parent::airshipLand();
$config = State::instance();
if (empty($config->universal['notary']['enabled'])) {
\Airship\json_response(['status' => 'error', 'message' => 'This Airship does not offer Notary services.']);
}
$this->sk = $config->keyring['notary.online_signing_key'];
$this->pk = $this->sk->derivePublicKey();
$this->channel = $config->universal['notary']['channel'];
$this->chanUp = $this->blueprint('ChannelUpdates', $this->channel);
}