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稳定币产品层出不穷 USDD会是最后的赢家吗？
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加密市场从来都是是阴晴不定的，稳定币作为一种维持稳定市场价格的加密货币，扮演着极其重要的角色，并促成了新金融系统的创建。目前市场上的稳定币层出不穷，各有特色，但不应低估风险。
我们已经看到了锚定失败、储备金缺失和诉讼问题的稳定币项目。因此，兼具去中心化和超抵押特性、具有更高的安全性和流通性的稳定币USDD无疑是当下稳定币市场最值得关注的新势力。
USDD是一个什么样的稳定币？
USDD的核心使命是为区块链世界提供一个去中心化的币值稳定的加密货币。USDD的流通和使用不受制于任何中心化机构，完全是属于用户自己的资产，任何机构和个人都不具备冻结用户USDD的能力，实现了完全彻底的去中心化。
USDD另一个特性是超额抵押，据官网显示，USDD目前发行总额7.25亿美金。USDD的储备金已经超过23亿美金，分别为14040枚 BTC ，超109亿枚TRX，1.4亿枚USDT与9.9亿枚USDC，实时抵押率高达320.47%。这完全符合甚至远远大于130%的承诺，并且储备金采用稳定币和主流数字货币的组合方式，进一步保障了USDD的稳定性。
USDD的币价是如何保持稳定的？
USDD的币值稳定主要依靠波联储的储备资产，同时由波联储根据市场情况采取利率设定、公开市场操作、窗口指导以及TRX和USDD相互铸造和销毁等一系列的货币政策维持。并且现阶段除波联储认定的白名单机构之外的人，无法将低于1美元的USDD燃烧并铸造成价值1美元的TRX卖出套利，所以无需担心会发生UST那样的死亡螺旋。
此外，USDD是去中心化的发行，并没有中心化机构承担兑换实体美元法币的义务，其币价是允许在一定的安全范围内（比如±3%）上下波动的，浮动并不意味着脱钩，也不意味着要立马采取手段去回钩，如果USDD的价格产生超过合理范围的大幅波动，波联储就会采取一系列强有力的货币政策维持USDD币值稳定。
正如在抛售加剧的情况下，USDD 的价格在前段时间内也曾一度低于“与美元挂钩”的预期水平（CoinGecko显示最低$0.94），由于波联储持续注巨资捍卫挂钩，前后增加了数十亿美元USDC等抵押品储备，并始终将USDD 的抵押率维持在300%以上，目前USDD的价格已经回到0.9965，基本上接近稳定在1美元左右。
数据来源：CoinMarketCap
面对重重质疑，波联储还在社交媒体发布了长文《五问USDD——波联储回应当前市场的关切》。对如何正确认知USDD的稳定性、什么样的用户适合持有USDD、为什么近期USDD发生一些波动、波联储会采取哪些货币政策维护USDD稳定以及波联储货币政策的指导思想等问题进行详细解答。并用实际行动力挽狂澜，维护了USDD的稳定性和安全性。
这样的担当和责任感对于一个刚刚出生仅两个多月的稳定币项目来说，无疑是令人敬佩的，从侧面也验证了波联储维持USDD稳定性的决心、行动力以及雄厚的资金实力。
超高APY奖励引发USDD挖矿热潮
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