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USDT作为稳定币能够稳定的原因 # W! D! m! A( \3 C9 N$ ?
# i. h2 a" v( I- P9 N) E* }+ w
% M1 G0 Q! @6 \$ D! d 作为法币与加密货币的桥梁，USDT一直有两个大类的市场，其一是各种加密货币兑换USDT的市场，包括中心化交易所和Defi上的市场；其二则是USDT1:1兑换美元的市场，这个市场主要由USDT官方兑换、大宗场外交易商和一些合规交易所的USDT/USD交易对所组成。
6 F" D. r; t. O9 x9 y/ s USDT兑换各种加密货币的价格由市场决定，Tether公司无法干预。但USDT兑换美元的价格，Tether则必须确保为1:1，否则USDT就无法发挥稳定币的作用。所以，Tether官方承诺USDT和USD1:1的兑换，对于一些大宗的美元场外交易商，同样依赖于Tether的官方兑换。
- ]2 J8 `8 r2 p2 V3 q, ~ 但是查阅Tether官网可以得知，官方兑换美元的门槛为至少10万美金，手续费则为1000美金或是兑换金额*0.001之间的更高者，由此可见，对于散户来说，去Tether官方并非最优选择。 4 V/ M" S! _5 n9 l+ [
而在Tether的【用户条款】中，则有这么一段话：
+ L$ _$ Z1 v0 P F* D6 C“Tether保留在Tether的储备资产发生流动性问题或是产生损失时，延迟兑换给用户美元的的权利，同时Tether保留兑换给用户证券或是其他Tether持有的储备资产的权利。”
/ S A& D# o5 A% C- K o1 x/ {2 v* W 也就是说，当用户拿着USDT去找Tether兑换美元的时候，Tether有可能没钱可兑，也可能只能给用户一些它所持有的等价物。 b+ k) Y) I! }; b+ k! j
众所周知，Tether并不持有相当于其usdt发行总量的美元，而是持有同等数量的资产，这些资产由哪些东西构成，目前Tether尚未向外界公布。 $ O# T# c: d+ [. T3 |
因而，Tether保持USDT稳定币汇率的主要做法，则是通过在USDT/USD交易对做市来保持1:1的汇率。目前有USDT/USD的交易所主要有三个，分别是Bitfinex（24小时交易量7000多万美元），Kraken（24小时交易量4000多万美元）和FTX（3000多万美元），三者24小时交易量总和为1.5亿美元，对于拥有400多亿资产的Tether来说，通过做市维持汇率轻而易举。 |
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