Tech Support
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What is USDJ?
Historical reference — The original USDJ/CDP system has been discontinuedThis article describes the original USDJ/CDP system, which was shut down on November 17, 2025. The mechanisms and procedures...
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What is the stabilization fee?
JUST collects a Stability Fee, which is calculated against the total amount of USDJ drawn on your CDP. The Stability Fee is calculated continuously. As we show in the formulas below, this type of c...
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Do I need to sign up for an account?
You don't need to sign up to use JUST as you can simply access it via your decentralized wallet. Wallets supported by JUST include TronLink and Ledger.
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When do I have to pay the Stability Fee?
Historical reference — The original USDJ/CDP system has been discontinuedThis article describes the original USDJ/CDP system, which was shut down on November 17, 2025. The mechanisms and procedures...
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Where can I see the amount of collateral that is backing USDJ?
Because the system runs as an autonomous smart contract and all transactions are saved to a public blockchain, users can interact with a fully transparent financial system without having to trust a...
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How to obtain JST token?
TRX holders can receive JST airdrops. Snapshot of TRX balance was taken at midnight on May 20, 2020(UTC), following which an airdrop of 217,800,000 JST was immediately distributed. Many first-rate ...
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What is PTRX?
When a user adds collateral to their CDP their TRX is held in escrow inside a smart contract for which they are issued PTRX in return. Once staked, a users PTRX holdings can be viewed as a percenta...
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What is penalty ratio?
Penalty ratio is used to determine the maximum amount of USDJ bought and destroyed in liquidation auctions. The remaining collateral assets after the CDP liquidation will be refunded to the CDP hol...
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Why does PTRX exist?
PTRX was chosen as a simple, easy to implement, and easy to audit solution to collect and manage a pool of assets. The primary purpose of the pool is to act as the recapitalization resource for USD...
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How is the JUST system governed?
Historical reference — The original USDJ/CDP system has been discontinuedThis article describes the original USDJ/CDP system, which was shut down on November 17, 2025. The mechanisms and procedures...