
From TRX's price surge to USDD subsidies, how has sTRX+USDD become the "holy grail" of mining? Brother Sun proves in practice an annual yield exceeding 20%
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From TRX's price surge to USDD subsidies, how has sTRX+USDD become the "holy grail" of mining? Brother Sun proves in practice an annual yield exceeding 20%
Overall, sTRX+USDD truly has the potential to become the "must-mine gem of 2025," thanks to its six key advantages: no lock-up, high yields, stable income sources, high security, upside potential, and flexible combinations. The trinity integration of JustLend, sTRX, and USDD is building an entirely new network for stable returns—one that doesn't rely on short-term explosions or FOMO, but instead forms a robust system capable of performing consistently across full market cycles.
In the cryptocurrency space, investors are always seeking investment opportunities that offer both high returns and low risk. Recently, Justin Sun, founder of TRON and global advisor of Huobi HTX, endorsed a new mining combination—sTRX+USDD—on social media, calling it the “must-mine crypto holy grail of 2025,” with annualized yields reaching 15%-20% or even higher. So, what exactly is sTRX+USDD? Why is it hailed as a “holy grail”? This article provides an objective analysis of its advantages and offers a participation guide to help readers understand this investment opportunity.
JustLend On-Chain Staking: sTRX + USDD, Activating the "On-Chain Money Printer"
JustLend is the leading lending protocol within the TRON ecosystem. It recently launched a feature allowing users to stake TRX to mint sTRX. First, let’s briefly introduce the basic concepts of sTRX and USDD:
- sTRX (Staked TRX): This is staked TRX, a token received when users stake TRON’s native cryptocurrency, TRX. Staking TRX not only earns network usage fee rewards but also enables participation in minting other assets.
- USDD: A decentralized stablecoin pegged 1:1 to the U.S. dollar, minted by collateralizing assets like sTRX, with yields subsidized by the system.
After spending years in crypto, we've seen countless fleeting "high-yield projects" come and go—and fallen into numerous "lock-up exit scam" traps. But this time, it's genuinely different. The sTRX+USDD mining strategy, personally promoted by Justin Sun in a nearly thousand-word post, involves staking TRX on JustLend to obtain sTRX, then using sTRX to mint USDD and depositing it back into the platform to earn dual-layered returns. So, why has sTRX+USDD been crowned the "holy grail"? Below, we analyze its “grail-like” characteristics from multiple angles.
The Six Pillars That Make sTRX+USDD Legendary
1. No Lock-Up! Full Fund Flexibility
Frankly speaking, these days we’re all wary of mining projects requiring locked-up funds. The most compelling aspect of sTRX+USDD is that it locks neither principal nor imposes entry barriers—users can enter or exit at any time, maximizing flexibility. Whether you're in today, out tomorrow, or back the day after, it’s perfectly fine. A dream come true for short-term traders and risk-averse users. It truly delivers on the promise of “earn and leave, leave whenever you want.” This is why many community members who’ve tried it firsthand have commented: Finally, a DeFi strategy that doesn’t hold your funds hostage.
2. Up to 15%-20%+ Annualized Returns, Scalable for Large Capital
Return rate is one of the top metrics investors care about. According to Justin Sun, the current annualized yield for the sTRX+USDD combo exceeds 15%-20%, with potential for further growth. It supports large capital inflows and outflows, making it suitable for both retail and institutional investors. In contrast to other DeFi projects limited by small liquidity pools, sTRX+USDD stands out as “high yield in a deep pool”—a rare combination offering both strong returns and scalability.
3. Solid Revenue Streams, No Risk of Collapse
Sustainability of returns is a key benchmark for evaluating mining projects. Compared to "pie-in-the-sky" schemes that collapse overnight, the sTRX+USDD revenue model is transparent and robust:
- sTRX portion: Derived from TRON network transaction fees. Every transfer and DApp call consumes energy provided by staked TRX. Thus, the income is stable and real, directly correlated with TRON’s on-chain activity—yielding up to 30% annually during peak activity, and still around 8%-9% during lows.
- USDD portion: Funded by system subsidies, delivering a steady ~8% annual yield paid directly in USDD. Since USDD is dollar-pegged, there's no price volatility risk, and no need to frequently sell to realize gains.
So yes, calling it a "passive income while lying flat" model is completely justified.
4. Ultimate Security: A Robust Design Culminating DeFi Best Practices
To be honest, after so many years in crypto, people have become numb to the word "security." Yet this strategy represents a culmination of best-in-class DeFi design: sTRX security is anchored in the thriving TRON ecosystem—like owning shares in a utility company and collecting dividends; here, instead of electricity, you’re supplying network energy and earning TRX in return. USDD security comes from systemic subsidies combined with a stablecoin mechanism—no speculative trading involved, no human intervention, fully executed on-chain.
The entire logic doesn’t rely on third-party platforms, eliminating risks of project rug pulls or extreme price swings. It’s one of the few mining methods today where users can actually "sleep soundly."
5. Retains Upside Potential of TRX—Double-Dipping Gains
Unlike traditional "stake-and-lock" models, sTRX operates via "staking to generate derivative assets"—meaning you stake TRX to receive sTRX, yet your underlying TRX continues generating yield and retains full exposure to price appreciation.
As the native token of the TRON network, TRX has demonstrated strong historical performance. Long-term holders can enjoy the dual benefit of earning interest while capturing market upside through sTRX.
6. Highly Composable Strategy, Fits All User Profiles
The final “legend-making” factor of the sTRX+USDD holy grail is its exceptional flexibility—users can tailor the strategy based on their risk appetite:
- You can simply stake sTRX to earn TRX yield;
- Or just mint and deposit USDD to collect subsidy rewards;
- Or follow KOLs and combine both for maximum yield.
And the entire process features no lock-ups, seamless swaps (available via one-click exchange on the HTX app), making position adjustments or capital changes extremely convenient. This combo suits virtually every user type—newcomers, seasoned veterans, and mainstream asset holders alike can find a configuration that works for them.
Step-by-Step Guide: How to Participate in sTRX+USDD Mining?
Now that you understand the "holy grail" benefits, here are the concrete steps to get started:
1. Visit the JustLend official website (https://justlend.org/) and connect your wallet, selecting TronLink.

2. Stake TRX to obtain sTRX: Go to the "Staked TRX" page and stake your TRX. Pro tip! To avoid repeated gas fee losses, it's recommended to stake at least 10,473 sTRX in one go.


3. Mint USDD: Head to the USDD official site (https://usdd.io/), select “sTRX-A,” click the “Mint” function, and use sTRX as collateral to mint USDD. Note that USDD minting requires a 150% collateral ratio—e.g., 100 units of sTRX can mint approximately 66.67 units of USDD.


(Note: Initially, I only had a few hundred sTRX—which wasn’t enough!!! Recommend acquiring at least 10,473 sTRX in one transaction)
4. Deposit USDD to earn yield: Return to the JustLend website and deposit USDD on the deposit page to earn approximately 8% annualized yield. Combined with sTRX earnings, total annual returns can exceed 15%.
Summary of the workflow: TRX → sTRX → USDD → USDD staking—an integrated on-chain capital path. When you need TRX or USDD, HTX’s instant swap feature is ready for use.
HTX Instant Swap: The "Energy Refueling Station" for On-Chain Players
Since I didn’t have enough TRX initially, I used the HTX app’s instant swap to convert some back for staking—and honestly, it was surprisingly smooth. Currently, the HTX app supports key tools for participating in this on-chain "holy grail":
- USDT ↔ TRX Instant Swap: Fast cross-asset conversion, easily topping up before on-chain actions
- USDT ↔ USDD 1:1 Instant Swap: Zero fees, zero slippage. Users can swap via instant swap or asset page, avoiding slippage and time costs
Beyond this, HTX has launched multiple USDD earning products such as "Flexible USDD Earnings" and "Locked USDD Earnings," offering annualized returns ranging from 10% to 20%, with flexible participation and stable yields.
In Closing: If You're Looking for a DeFi Project That's "Long-Term, Stable, and Resilient," Seriously Consider Exploring This Combo
Overall, with its six core advantages—zero lock-up, high returns, stable income sources, high security, upside potential, and flexible composability—sTRX+USDD truly has the makings of the “must-mine holy grail of 2025.” The triad of JustLend, sTRX, and USDD is building a new stable-yield network. It’s not about short-term hype or FOMO—it’s a sustainable system designed to last through market cycles.
For yield-seeking investors, this is an opportunity that cannot be ignored. However, given the fully decentralized nature of on-chain staking, participants should proceed with caution, ensuring fund security and using reliable storage methods. Whether you’re a beginner or a veteran, sTRX+USDD is worth trying—perhaps this is indeed the next wealth wave in crypto.
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