# What is USDDOLD? USDDOLD is an over-collateralized decentralized stablecoin that is issued by TRON DAO Reserve, who is also the custodian. USDDOLD is minted by the whitelisted institutions of the TRON DAO Reserve (TDR) through burning TRX. Its value is backed by the over-collateralization of highly liquid crypto assets under the TDR, including BTC, USDT, USDC, and TRX. The circulation and use of USDDOLD are free from the intervention of any centralized parties. Similar to BTC and ETH, USDDOLD grants its holders full ownership, meaning that no organization or individual has access to freeze users’ USDDOLD. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs-29.gitbook.io/usdd-v2/introduction/what-is-usddold.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.