Can anyone explain why tether falls below $1 dollar?
Also, most STC are centralized and dollarized, isn't that going back to reliance on fiat. Finally, since they're not blockchained, how do exchanges connect to their system, API?
Sometimes there is a bigger sale than the buyers are capable of covering and those times stablecoins go under 1 dollars each but thanks to arbitrage and knowing that price is stick to one dollars each and at least tokens worth that much people buy from those cheap amounts and cover that difference pretty quickly, anything slightly less or more like 98 cents or whatever is there because people really don't care about that much difference and also the exchange fee's wouldn't cover that difference so you would be losing money if you try to close that gap.
Also stablecoins are mostly useless worthless stuff that you don't really need, you could use the actual fiat instead and that is why its never getting too much attention from traders and sometimes suddenly drops when someone sells like 500 million USDT (like it happened couple months ago) and that causes it to go as low as 95 cents and even less.