{
  "pools": [
    {
      "quota" : "1",
      "url" : "stratum+tcp://stratum.nicehash.com:3333",
      "user" : "my-BTC-walletaddress",
      "pass" : "x"
    }
  ]
}

Safely shutdown Titan by killing power to the controller board first, then power cycling the remaining power supplies directly connected to the cubes.  You can also run command "sudo shutdown now" to shutdown softly or "sudo shutdown -r now" to reboot softly.  All needs to be done at bash command prompt from ssh pi@.