Good q.
There are two topics:
  1. You do not borrow from a lender, but FUSD is issued on-demand atomically when L-BTC is locked in the smart contract (either Liquid transaction or via Lightning swap)
  2. Yes FUSDs are all equal, therefore fungible to one another.
Can you please explain why FUSD stays pegged to the USD? Will you act as a market maker that always sells the liquidated collatoral (in LBTC) for FUSD at pegged price?
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