They are a little busy prepping for launch so I'll speak up here.  I'm sure they will update the ANN page with more Official info and certainly correct me if I am mistaken... though I am going off of Core Team quotes ATM.  Until then, we understand it to be 15.4 B over 5 years. Down from 150 B. It's 90% less total supply than Sia.  Nice Airdrop this weekend for SC hodlers.  Folks should read up right away!  This team moves fast and plans to polish things, like the site, later.  Solid tech is in place and with many improvements and differentiating features to come.  That's what really counts right now.  I don't speak for the team, but I've been studying them, the project and the launch for several weeks now.  It's a solid project.

Really High end mining gear didn't exist back during SC's original launch.  Now's your chance to use it near the genesis block of Space Cash.  As a miner, it's like going back in time to the beginning on Sia.  If you are an Obelisk Owner, this is your opportunity to ROI.  Though, all brands of Blake2B mining gear is more than welcome and will be present.  If you can mine Sia Coin, you can mine Space Cash. 

--Clean your Ore Carts and get your gear ready!