Where do the first BitUSD come from? If they are "loaned into existence" by someone giving 2 BTS in exchange for 1 BTS worth of BitUSD, what initial exchange rate is used? Also, how are the 32 BitAssets in the chain determined (for example, what are going to be the 32 assets in the "root" chain?) Is there even a root chain, or is it just that the original one will have more universal assets like gold, usd, etc? How is this decided?
I'm trying to make sense of the whitepaper but it's a lot to wrap your head around at once.