> For the complete documentation index, see [llms.txt](https://legacy-docs-zh.usdd.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://legacy-docs-zh.usdd.io/usdd-jian-jie.md).

# USDD 简介

USDD 是由 TRON DAO Reserve 指导，由白名单机构以销毁 TRX 铸造 USDD 的方式发行的**去中心化超抵押稳定币**。并且由波联储掌控的BTC、USDT、USDC、TRX等高流动性数字资产进行超额抵押，支撑 USDD 的价值。USDD 的流通和使用不受制于任何中心化机构，用户拥有 USDD 如同拥有 BTC 和 ETH 一样，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。

目前，USDD 已在多个主流链上流通。 详情查看： <https://usdd.io/#/>。

## 去中心化

USDD 协议致力于为区块链行业提供一个最为稳定、去中心化、防篡改、无冻结的稳定币体系，不依赖任何中心化实体而永恒存在。

## 超额抵押

USDD 由多种主流数字资产超额抵押背书，包括 TRX、BTC、USDT 等，抵押资产的总价值远高于 USDD 流通总价值，抵押率保持在 130% 以上，远超过 DAI 最低抵押要求 120%。

## 多链流通

USDD 已支持多条主流网络。通过跨链桥，USDD 可在各个网络中流通。在波场网络中，USDD 将继续保持 TRC20-USDT 的高速、低费的使用体验，满足用户的多种需求。


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