the liquidation happens when you use usdx as collateral. Usdx has low liquidity, a short-term exploitive price cut could lead to liquidation?
It uses the price from Ascendex, and although it uses a TWAP-720 price feed (averaged over 12 hours) there have been times where the price can moves up or down by a large amount so would be very cautious about using it as collateral. You can no longer borrow USDX as it was open to manipulation by pumping the price and causing liquidations
is the average price for 12 hours taken? A second, instant, price change does not lead to liquidation and cannot be used for an exploit?
Correct Even after dropping from 90c to 10c for an hour the average should still be at 83c The bigger problem in the past was the price pumping to say $100 as that can effect the 12 hour average in just a few minutes resulting in liquidations if users have borrowed USDX against other assets, hence the stop to USDX borrowing
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