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What Is USDD?

USDD (Decentralized USD) is a stablecoin that aims to hold a 1:1 peg to the US dollar. It was created by the TRON DAO Reserve and is closely associated with TRON founder Justin Sun. USDD launched on May 5, 2022, and today circulates on TRON, Ethereum, and BNB Chain, with a market capitalization of roughly 1.56 billion dollars as of July 2026. Unlike USDC or PayPal USD, USDD is not backed by bank deposits and Treasuries; it is backed by crypto collateral held in smart contracts.

USDD's first version was an algorithmic stablecoin explicitly modeled on Terra's UST. It used a mint-and-burn arbitrage loop against TRX, the same mechanism UST used against LUNA, with a reserve of crypto assets held by the TRON DAO Reserve as a partial backstop. Justin Sun promoted a "risk-free" yield of up to 30 percent on USDD deposits, echoing the Anchor Protocol yield that had driven UST's growth. The timing could hardly have been worse: USDD went live on May 5, 2022, just days before UST began breaking its peg on May 9 and the Terra chain was halted on May 13. USDD launched into the collapse of the very design it had copied, and it inherited heavy skepticism from the start.

That skepticism proved warranted. In June 2022, about a month after launch, USDD lost its peg. It traded down to roughly 97 cents on venues including Curve and Binance and dipped as low as about 93 cents, with brief prints even lower on some order books. The TRON DAO Reserve responded by adding Bitcoin and USDC to the reserve basket and pushing the stated collateral ratio above 200 percent, and the token recovered to within about 1 percent of a dollar over the following week. It slipped again in December 2022, trading under 97 cents, and spent stretches of early 2023 between 96 and 99 cents on TRON decentralized exchanges. USDD never suffered a UST-style collapse, but it also never demonstrated that the algorithmic design could hold a hard peg under stress.

In August 2024 the TRON DAO Reserve removed roughly 750 million dollars of Bitcoin from the backing, leaving TRX as the dominant collateral asset. The move was made without a DAO vote, which drew criticism given USDD's claims to decentralized governance. Then, on January 25, 2025, the project relaunched as USDD 2.0 and abandoned the algorithmic model entirely. The new design is a collateralized debt position system similar to MakerDAO: users lock crypto in on-chain vaults and mint USDD against it, and if a vault falls below its minimum collateral ratio it is liquidated and the collateral is auctioned. Supported collateral currently includes TRX, staked TRX (sTRX), USDT, and wrapped Bitcoin, with per-vault minimum collateral ratios ranging from 105 percent for USDT vaults up to 150 percent for the more volatile collateral types, and TRX vaults sitting between 120 and 150 percent. Note that this is well below the 200 to 300 percent figure often quoted for USDD, which refers to the TRON DAO Reserve's system-wide reserve claims rather than to what an individual vault must post. A Peg Stability Module also lets users swap approved stablecoins for USDD at 1:1, and in practice the PSM accounts for a large share of the circulating supply. Governance runs through JST, the JUST token in TRON's DeFi stack.

The headline claim of 200 to 300 percent collateralization dates from the TRON DAO Reserve era and refers to the overall reserve value against outstanding USDD, not to the minimums enforced by the USDD 2.0 vault contracts, which are much lower. The distinction matters: system-wide overcollateralization is a cushion, but the protocol's actual safety margin on any individual position is the liquidation threshold, and the largest collateral asset by far is TRX, a volatile token whose price is tied to the same ecosystem that issues USDD. That correlation between the stablecoin and its collateral is the central risk in the design. The smart contracts have been audited by ChainSecurity (January 2025 for the TRON contracts, October 2025 for Ethereum and BNB Chain) and by CertiK (September 2025 for Ethereum), but audits do not address collateral or peg risk.

Yield has been the main growth engine, and it is unusually high. USDD 2.0 launched with a 20 percent APY that Justin Sun said would be subsidized by the TRON DAO, with interest paid in advance to a transparent address, and higher headline rates have been available at times through boosted campaigns with partner exchanges and its "Smart Allocator" strategy. The protocol also issues sUSDD, an interest-bearing savings token. The base rate has come down repeatedly: it was 8 percent through JustLend in late 2025, was cut to 5 percent in February 2026, and has since been trimmed again, with the protocol's own documentation showing a base savings rate around 4 percent by mid-2026. A double-digit yield on a dollar-pegged asset is not a free lunch. It has been funded by protocol subsidies and by deploying reserves into other DeFi protocols, both of which carry risk, and it is exactly the sort of promise that preceded the collapse of UST.

USDD is heavily concentrated on TRON. Of roughly 1.56 billion USDD outstanding, the large majority (around 1.3 billion, or roughly 84 percent) sits on TRON, with a much smaller amount on Ethereum, where the token went native on September 8, 2025, and a small remainder on BNB Chain. Liquidity outside TRON is comparatively thin. On the issuer side, Justin Sun is a controversial figure: the SEC sued him and his companies in March 2023, alleging fraud, market manipulation of TRX, unregistered securities offerings, and undisclosed celebrity endorsements. The case was resolved on March 5, 2026: the SEC agreed to dismiss with prejudice all claims against Sun and the Tron and BitTorrent foundations, while his company Rainberry Inc. settled a wash-trading claim and agreed to pay a 10 million dollar penalty. Sun and his firms neither admitted nor denied the allegations. The settlement drew criticism from some observers, who noted it followed Sun's 75 million dollar investment in the Trump-linked World Liberty Financial.

Getting Started With USDD

Most USDD activity happens on TRON, and the simplest path is to acquire it on an exchange rather than mint it yourself.

  1. Step 1: Set up a TRON-compatible wallet such as TronLink, or an Ethereum wallet if you plan to use the ERC-20 version.
  2. Step 2: Buy USDD on an exchange that lists it, or swap into it on a decentralized exchange, and withdraw to your wallet.
  3. Step 3: If you want to mint USDD yourself, connect to the USDD app, open a vault, deposit TRX, sTRX, USDT, or WBTC, and borrow USDD against it while keeping the collateral ratio safely above the liquidation threshold. Note that the USDD platform is not available to users in the United States or the European Union (see below), so this step is not open to everyone.
  4. Step 4: Understand the risks before depositing into savings products. Advertised yields are subsidized or strategy-driven, the main collateral asset (TRX) is volatile, and USDD has broken its peg before.

How to Get a USDD Wallet?

USDD is a standard TRC-20 token on TRON and an ERC-20 token on Ethereum and BNB Chain, so any wallet that supports those standards will hold it.

TronLink

TronLink is the most widely used TRON wallet and the default choice for USDD, available as a browser extension and as mobile apps. It connects directly to the USDD app for minting, savings, and the Peg Stability Module.

Trust Wallet

Trust Wallet is a multi-chain mobile wallet that supports TRON, Ethereum, and BNB Chain, so it can hold every version of USDD in one place.

MetaMask

MetaMask holds USDD on Ethereum and BNB Chain as a standard ERC-20 token. Add the contract address manually if the token does not appear automatically.

Hardware Wallets

A Ledger device pairs with TronLink or MetaMask and keeps the private keys offline, which is the sensible option for larger balances.

USDD Resources

How to Buy USDD?

USDD is listed on a moderate number of exchanges, with most of its trading volume concentrated on TRON-linked venues and on SunSwap. Liquidity is thin compared to USDT or USDC, so large orders can move the price.

There is an important catch for many readers. USDD's own platform states that access is restricted for users in the United States and the European Union for regulatory reasons. That means the vaults, the Peg Stability Module, and the savings products described above are off limits to US and EU users, even though the token itself is freely tradable and Kraken lists it against both dollars and euros. If you are in either jurisdiction, you can buy and hold USDD, but you cannot mint it or earn the advertised yield on it through the official app.

Centralized Exchanges

USDD trades against USDT on Gate, HTX, KuCoin, MEXC, BingX, AscendEX, and BitMart, and against US dollars on Kraken. It is not listed on every major exchange, and it is generally bought by swapping from another stablecoin rather than with fiat.

Decentralized Exchanges

On TRON, SunSwap is the main venue and carries the largest USDD pools. On Ethereum, USDD trades on Uniswap and Curve, and on BNB Chain it trades on PancakeSwap. The USDD Peg Stability Module also allows direct 1:1 swaps between approved stablecoins and USDD, which is often the cheapest way in and out when the peg is holding.

Latest USDD News

USDD's supply has grown substantially since the 2.0 relaunch rebuilt it from near zero, reaching roughly 1.56 billion dollars by mid-2026 after the native Ethereum deployment in September 2025 and the expansion to BNB Chain. The protocol has been steadily reducing its yield subsidies: after paying as much as 20 percent at launch and 8 percent through JustLend in late 2025, the base APY was cut to 5 percent effective February 28, 2026, and has been trimmed further since, sitting around 4 percent by mid-2026, with the team citing capital efficiency and long-term sustainability. Boosted rates remain available at times through partner exchange campaigns. Check the app for the current rate rather than relying on a headline number, because it has moved repeatedly.

The other significant development is legal rather than technical. In March 2026 the SEC settled its long-running case against Justin Sun, dismissing the fraud and market manipulation charges with prejudice in exchange for a 10 million dollar penalty paid by Rainberry Inc., with no admission of wrongdoing. That removes a major overhang from the TRON ecosystem, though it does not change USDD's underlying design risk: the stablecoin remains overwhelmingly collateralized by TRX, an asset whose value is bound to the same ecosystem that issues it.