什么是 USDT
What's a USDT?
Tether USD(简称USDT)，中文名称为泰达币。发行 USDT 的 Tether 公司，原名 Realcoin，注册地为马恩岛和香港。2014年，Realcoin 公司更名为 Tether。2015年，Tether 公司发行的 Tether 在交易平台 bitfinex 和 Poloniex 上线。
Another USD (USDT) was issued by USDT's Tether Company, originally known as Realcoin, registered as Isle of Man and Hong Kong. In 2014, Realcoin changed its name to Tether. In 2015, Tether issued Tether online on trading platform bitfinex and Polonix.
Tether 公司在《Tether白皮书：一种利用比特币区块链交易的法币代币》中定义 Tether 为：
Tether defined in the White Paper Tether: a French token for trading using the Bitcoin block chain as:
“Tethers，是一种法币挂钩的数字货币，所有 Tethers 都是通过 Omni Layer 协议在 Bitcoin 区块链上以代币形式首次发行，每一个发行流通的 Tethers 都与美元一比一挂钩，相对应的美元总量存储在香港 Tether 有限公司(即一个 Tether 币为一美元)。 凭借 Tether Limited 的服务条款，持有人可以将 Tethers 与其等值法定货币赎回/兑换，或兑换成 Bitcoin。 Tether 的价格永远与法定货币的价格挂钩，其挂钩发币的储存量也永远大于或等于流通中的币量。在技术方面，继续遵从比特币区块链的特点与功能。”
“Tethers, a digital currency linked to French currency, all Teths were first issued as a token in the Bitcoin block chain through an Omni Layer agreement, and each of the circulating Tethers was linked to the dollar at one-to-one, and the corresponding total dollar was stored in Hong Kong Tether Limited (i.e., a Tether currency of one dollar). By virtue of the service terms of Tether Limited, the holder can redeem/convert others to its equivalent legal currency, or convert them to Bitcoin. Tether's price is always tied to the price of the legal currency, and the amount of its deposit-linked currency is always greater or equal to the amount of currency in circulation. On the technical side, continue to follow the characteristics and functions of the Bitcoin chain.”
2. USDT 的特点
2. USDT Features
1:1准备金保证
1:1 Reserve Assurances
根据 Tether 的 CTO 及联合创始人 Craig Sellars 称，用户可以通过 SWIFT 电汇美元至 Tether 公司提供的银行帐户，或通过交易所换取 USDT 。赎回美元时，反向操作即可。Tether 公司的网站宣称将严格遵守 1：1 的准备金保证，即每发行 1 枚 USDT 代币，其银行帐户都会有 1 美元的资金保障。
According to Tether's CTO and its co-founder, Craig Sellars, users can wire the United States dollar through SWIFT to a bank account provided by Tether, or exchange it for USDT. When the dollar is redeemed, reverse operations are sufficient. Tether's website claims that it will strictly adhere to a reserve guarantee of 1:1, which means that for every USDT coin issued, its bank account will have a financial guarantee of $1.
代币保值，1 USDT=1 美元
Currency protection, 1 USDT = 1 United States dollar
这算是 USDT 最大的特点，它与同数量的美元是等值的，1 USDT=1 美元，使之成为波动剧烈的加密货币市场中良好的保值代币。
This is one of the largest features of the USDT, which is equal to the same amount of United States dollars, with USDT = US$ 1, making it a good monetizer in a highly volatile crypto-currency market.
发行和交易使用 Omni 协议
Use Omni protocol for issuance and transactions
USDT 的发行和交易使用的是 Omni(原Mastercoin)协议，而 Omni 币可以说是市面上的第一个基于比特币区块链的2.0币种，所以USDT 的交易确认等参数是与比特币一致的。
USDT was issued and traded using the Omni (formerly Mastercoin) agreement, whereas the Omni currency was the first on the market to be 2.0 currencies based on the Bitcoin block chain, so that the parameters such as USDT transaction confirmation were consistent with Bitcoin.
USDT具有哪些其他加密货币不具备的优势?
What are the advantages of USDT not available in other encrypted currencies?
优势一：规避整体下跌风险
Strength one: avoiding the risk of overall decline
USDT 在涨跌幅上不会出现巨大的波动，只跟随美元汇率的变化而变化，价格非常稳定，所以它最重要的意义就是避险，在币币交易所有币价全部下跌的情况下，可通过将数字资产转换为 USDT 的方式来规避风险。比如你买了 BTC，当 BTC 暴跌的时候，如果没有 USDT，那么你将无法进行仓位的控制，无论你如何进行币币交易，任何时候都只能是处于满仓状态。 但是有了 USDT，是当币价下跌时，我们可以立刻把币换成 USDT，从而保证你的资产不缩水。
The significance of the USDT is to avoid the risk of converting digital assets to USDT when all currency transactions fall. For example, when BTC falls, you will not be able to control the position, regardless of how you deal with the currency, at any time it is full. But, with the USDT, when the currency falls, we can switch the currency to USDT immediately, so as to ensure that your assets do not shrink.
优势二：让币价更加直观
Strength two: make the currency more intuitive
币币交易中，常常不能直观看到每个币相应的价值。比如 ETH/BTC 交易对的价格是 0.0485BTC，那ETH的法币价值是多少呢?一般大家只能使用计算器算了，非常的不方便。但在支持 USDT 交易对的情况下，可以直观的看到每个币种价值多少美元。
In currency transactions, it is often not possible to see the corresponding value of each currency directly. For example, the ETH/BTC transaction is at a price of 0.0485 BTC, and what is the value of the ETH in French? Usually you can only use calculators, which is very difficult.
优势三：流通速度快
Strength three: velocity of circulation
USDT 的流通是基于比特币区块链，稳定可靠。
The circulation of USDT is based on the Bitcoin block chain and stable and reliable.
3. USDT 存在的风险
3. Risks present in USDT
关于 USDT 的风险，Tether 公司在《Tether白皮书：一种利用比特币区块链交易的法币代币》中也写道：
With regard to the risks of USDT, Tether also wrote in Tether White Paper: a French token for trading using the Bitcoin block chain:
ether 是去中心化数字货币，但是我们并不是一家完美去中心化的公司，我们作为中心化的质押方存储所有的资产。
The other is decentralized digital money, but we're not a perfect decentralized company, and we store all our assets as a centralized pledge.
公司可能破产;
(b) The company may be bankrupt;
公司开设账户的银行可能破产;
Banks with accounts opened by companies may become bankrupt;
银行可能冻结资金;
The bank may freeze funds;
公司可能卷款落跑;
(b) The company may run off with money;
重新中心化风险可能让整个系统瘫痪;
The risk of re-centralization could paralyse the system as a whole;
由此可见，USDT 由 Tether 公司发行，自带中心化属性，其中的风险点还是很多的。
As can be seen, the USDT was issued by Tether, with its own centralized attributes, with many risk points.
4. USDT 如何兑换美元
4. USDT convertible to United States dollars
第一个方法：通过 Tether 公司，把手中的 USDT 还给 Tether 公司。Tether 公司销毁收到的 USDT ，发放等值的美元给用户。需要提醒的是，不管是通过电汇美元至 Tether 公司提供的银行帐户以购买 USDT ，还是将 USDT 换回成美元，都是需要完成账户验证的。据了解 Tether 的 KYC 比较难通过，一般都会排队等挺久，感兴趣的朋友可以一试。
The first method: through Tether, return the USDT in your hand to Tether. Tether destroys the USDT received and distributes the equivalent dollar to the user. It is important to remind that whether to transfer the dollar to a bank account provided by Tether to buy the USDT or to convert the USDT back to the dollar, it is necessary to complete the account validation. It is known that Heather's KYC is harder to pass, usually waits long enough for interested friends to try.
第二个方法：通过交易平台 kraken(https://www.kraken.com/)将 USDT 兑换美元。在 Kraken 平台，选择 USDT / USD 交易对，就可以将 USDT 换成美元。
The second method: converts USDT to US$ through trading platform kraken (https://www.kraken.com/). On Kraken platform, selecting USDT/USD transaction pairs allows USDT to be converted to US$.
5. USDT 相关网站
5. USDT Web site
USDT 官网：https://tether.to/ 进入 USDT 官网，即可注册登录更进一步体验 USDT 产品。
USDT Network: https://tether.to/ Access USDT Network to register and further experience USDT products.
手机 APP 下载：https://tether.to/app/ USDT 有自己的手机客户端，登录网址可以选择“App Store”后者“Google Play”，选择相应商店即可下载。
Mobile phone APP downloads: https://tether.to/app/USDT has its own mobile client and the site can be accessed by selecting “App Store”, the latter's “Google Play”, which can be downloaded by selecting the appropriate store.
USDT 区块浏览器：http://omnichest.info/lookupsp.aspx?sp=31 登录区块浏览器，即可查询相关交易信息;可在“feature activations”里查看相关区块功能的激活状态，也可在钱包里下载“web wallt”和“desktop wallet”。
USDT Block Browser: http://omnichest.info/bookupsp.aspx?sp=31 Login Block Browser, can search for relevant transaction information; the active state of the function of the block can be viewed in "featureactivations ", or "web wallt" and "disktop walklet" can be downloaded from the wallet.
USDT 的 Twiter：https://twitter.com/Tether_to/
USDT Twiter: https://twitter.com/Teth_to/
USDT 的 Facebook：https://www.facebook.com/tether.to
USDT Facebook: https://www.facebook.com/text.to
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