What is the connection between Sia / Siacoin and https://silentnotary.com/ ICO launching on Byteball platform?
Same Sia 2014 whitepaper.
Same Sia 2014 whitepaper.
Nothing. They are unrelated projects with different scopes. That thing you linked does nothing to do with decentralized storage.
The only connection here is that you are trying to spam us with an unrelated ICO.
Obelisk 
Obelisk is an ASIC miner for the Sia network: https://obelisk.tech/