> For the complete documentation index, see [llms.txt](https://justlend.gitbook.io/untitled/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://justlend.gitbook.io/untitled/anouncement/market-upgrade/announcement-on-upgrading-the-supply-mining-rewards-to-usdd-on-justlend.md).

# Announcement on Upgrading the Supply Mining Rewards to USDD on JustLend

Dear users:

 

In order to promote the health and sustainable development of the TRON ecosystem, TRON DAO Reserve and JustLend have entered into a strategic partnership. Both parties will actively explore and innovate to promote the diversified development of JustLend and provide users with more efficient services and more stable revenue.

 

JustLend supply mining rewards will be upgraded from JST to USDD, and JST will no longer be released through mining. USDD is an **over-collateralized decentralized stablecoin**, which is issued and custodied by TRON DAO Reserve, it is secured by the over-collateralization of multiple mainstream digital assets (e.g. TRX, BTC, USDT, USDC, and so on). The collateral ratio is up to 312%. At present, USDD perfectly circulates on TRON, Ethereum, BSC, and other networks via the cross-chain protocol BitTorrent Chain, Learn more about USDD at [https://usdd.io](https://usdd.io/#/).

 

After upgrading, the JustLend platform and JustLend users can enjoy the benefits of the USDD ecosystem:

* USDD as an over-collateralized decentralized stablecoin will greatly reduce the risks caused by market fluctuations, and ensure the stability of users' income and the security of their assets.
* USDD has a rich ecosystem, and users can gain higher benefits by participating in USDD ecological activities.
* USDD supports multi-chain circulation which can help users easily realize the assets cross-chain and meet the diverse needs of users.

Welcome all users to participate in the USDD mining activities on [SUN.io](http://sun.io/), Check more mining activities at: <https://sun.io/?lang=en-US#/stake>.

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#### **Supply Mining Rules**

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**Mining Phase**: The 14th phase of JustLend supply mining will end at 20:59:59 (Singapore time) on July 8, 2022, and the 15th phase will start at 21:00:00 on July 8, 2022 (Singapore time). time, each mining phase lasts for 4 weeks.

**Reward Distribution Strategy**: The mining rewards for the past 4 weeks will be distributed once in the next week, for example, all the rewards generated between July 8, 2022, 21:00:00 - August 5, 2022, 20:59:59 will be distributed on August 9, and so on.

**Mining Rules**: Miners who supply liquidity on JustLend will gain additional USDD mining rewards in addition to the supply interest. The supported markets and rewards are as follows.

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#### **JustLend Supply Mining Phase XV**

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**Time**: July 8, 2022 21:00:00 (Singapore time) - August 5, 2022 20:59:59 (Singapore time)

**Mining Rewards**:

| Market | Rewards | Amount |
| ------ | ------- | ------ |
| BTC    | USDD    | 2,000  |
| ETH    | USDD    | 1,000  |
| USDT   | USDD    | 8,000  |
| BTT    | USDD    | 4,500  |
| JST    | USDD    | 2,000  |
| TUSD   | USDD    | 4,500  |
| USDJ   | USDD    | 3,000  |
| NFT    | USDD    | 4,500  |
| USDC   | USDD    | 1,000  |
| WIN    | USDD    | 2,000  |
| SUN    | USDD    | 2,000  |

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**USDD Market**

The supply mining rewards of the USDD market will be upgraded from “JST + USDD” to USDD from July 7, 2022, at 20:00:00 (Singapore time).

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Thank you for your support!

JustLend DAO Team

July 06, 2022

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