What is aUSDT: exploring Tether's gold-backed synthetic dollar

June 2024 saw Tether, the platform behind the USDT stablecoin, launch Alloy (aUSDT), an over-collateralized digital asset backed by Tether Gold (XAUt). The asset provides more gold collateral than the value of aUSDT tokens issued, enhancing its stability and making aUSDT reliable for everyday payments, trading, and saving.

As a synthetic dollar, aUSDT is designed to reflect the value and functionality of the U.S. dollar without being backed by it. Meanwhile, holders of aUSDT gain exposure to gold while simultaneously holding a dollar-referenced tethered asset for day-to-day payments.

Could aUSDT represent another step forward for digital asset adoption? In this article, we'll explore the token in more depth, explaining its technical underpinnings, how aUSDT can be used, and more.


  • aUSDT pairs the steadiness of the U.S. dollar with the lasting value of gold, creating a stable asset that's suitable for everyday payments.

  • The Alloy platform supports various tethered assets and adapts to different types of collateral.

  • Over-collateralization means more gold is used to back aUSDT than the total value of aUSDT available, making the token more stable.

  • Ethereum smart contracts handle minting and collateral changes, with Tether Gold used as collateral.

  • The Alloy platform may soon offer yield-bearing products, providing opportunities for potential earnings alongside asset security.

What is aUSDT?

Imagine you have a treasure chest full of gold. This gold isn't just sitting there — it's being used to back a special type of digital money, making sure it remains stable and valuable. That's what Tether has done with aUSDT.

It's an over-collateralized digital asset backed by Tether Gold (XAU₮), meaning more gold is held as collateral than the value of the aUSDT tokens issued. This approach is like having extra savings in your bank account to cover any unexpected expenses, providing a safety net and enhancing the asset's stability.

aUSDT aims to combine the best of both worlds: the familiarity and wide acceptance of the U.S. dollar and the enduring value of gold. The dollar's stability is well-known, making it a preferred choice for transactions and savings.

Gold, on the other hand, has been a reliable store of value for centuries due to its scarcity and low volatility. By merging the two, aUSDT offers a stable and reliable digital currency that can be used for trading and as part of the daily economy.

Smart contracts, which are automated programs on the Ethereum blockchain, have a prominent role to play in aUSDT. The technology handles everything from creating new aUSDT tokens to managing collateral. Think of them as a trustworthy digital escrow service that makes sure everything runs smoothly and transparently.

Tether's Alloy platform supports aUSDT, allowing users to create and manage digital assets. It may also support other types of tethered assets in the future, offering yield-bearing products to meet various customer needs.

How is aUSDT over-collateralized?

Over-collateralization provides an all-important safeguard against any volatility in the price of gold. Imagine you’ve borrowed $100 from a friend but left $150 worth of gold with them as a guarantee. If the gold’s value drops slightly, your friend should theoretically have more than enough to cover the loan. This extra security is what makes the system robust and trustworthy. For aUSDT, Tether uses Tether Gold (XAU₮) as this safeguard.

Here’s how it works in brief. When aUSDT tokens are issued, they're backed by a larger value of gold. So, if you have 100 aUSDT, there’s more than $100 worth of gold stored safely to back it up.

Over-collateralization offers two primary benefits: stability and reliability. By holding more gold than the value of the issued tokens, Tether can withstand market fluctuations without impacting the value of aUSDT. This makes sure that users can trust the stability of their aUSDT, making it a dependable choice for transactions and savings. Meanwhile, the smart contracts Tether employs to manage collateral automatically check and adjust the token's value, keeping everything balanced.

What are the technical mechanisms aUSDT?

The Ethereum-based smart contracts underpinning aUSDT are written in Solidity, a programming language specifically designed for creating secure and efficient Ethereum-based applications.

Depositing Tether Gold (XAU₮) allows for the minting of aUSDT. The smart contract automatically mints new aUSDT tokens, making sure each one is backed by real gold. The contract tracks all collateral, providing transparency and verification of gold backing for aUSDT in circulation.

Price oracles play an important part in the execution of smart contracts as part of the aUSDT mechanism. The tool provides real-time data about the value of gold, helping smart contracts to change collateral values and make sure the aUSDT in circulation is backed by gold.

Finally, there are liquidators, which act like financial watchdogs. If the value of the collateral drops a lot, they step in to fix the balance. They do this by buying gold at a discounted rate, making sure the system remains stable and secure. This mechanism helps maintain the collateralization ratio, preventing any major hiccups in the system.

How can aUSDT be used?

Because of its relatively high stability, aUSDT has multiple use cases across payments, trading, and savings.

Everyday payments

  • Stability: Unlike many cryptocurrencies that swing wildly in value, aUSDT combines the stability of the U.S. dollar with the lasting value of gold. That makes the asset well suited to everyday payments without worries about sudden drops in value.

  • Usability: Since aUSDT is pegged to the U.S. dollar, it's more attractive as a payment option for merchants and consumers. Pricing and conversions are simple, making daily transactions smooth and predictable.

Trading and settlements

  • Trading: Traders typically prefer stability from their assets. As aUSDT is backed by gold for added security and trust, it's not as volatile as other tokens. Greater stability theoretically means fewer sharp price swings that can complicate trading strategies.

  • Settlements: aUSDT is also suited to transaction settlement. Its steady value lowers the risks of fluctuating currencies, making it an option for paying debts or finishing contracts.


  • Gold benefits: By holding aUSDT, you're effectively holding digital gold. Gold is rare and keeps its value over time, making aUSDT a potentially attractive place for traders to park their funds, especially during uncertain economic times.

Why aUSDT stands out

  • Scarcity: Gold’s limited supply means it retains its value well, and aUSDT leverages this trait. You get the practical use of the dollar and the value preservation of gold in one package.

  • Purchasing power: With aUSDT, you’re potentially shielded from some of the inflation risks that can erode the value of your money over time. Many believe the asset is a smart way to maintain and even grow your purchasing power.

How does the Alloy platform support aUSDT?

Two standout features of the Alloy platform are its flexibility and versatility. The platform isn't just limited to gold-backed assets like aUSDT. It can support different types of collateral, from traditional assets like real estate to other commodities. As market needs change, Alloy can adapt and evolve, providing new products and opportunities to meet the requirements of different customers and regulations.

Another notable cog in the platform is its backing mechanics — the methods used to maintain the asset's value. Think of this as a solid foundation for building blocks. These blocks are different backing mechanisms that ensure the stability of tethered assets. Alloy's infrastructure manages over-collateralization, like with aUSDT, and other methods. This adaptability keeps assets secure and trustworthy.

Reportedly, the Alloy platform will soon let users earn returns on their digital assets, like earning interest on a savings account. This feature could attract a wider range of users looking for both security and growth.

The final word

Tether's gold-backed Alloy stablecoin and wider platform has the potential to disrupt the current approach to minting and issuing digital assets. The token's flexibility and variety of use cases make it an attractive option in the crypto space, with the potential also to turn heads among those yet to explore the possibilities beyond traditional finance.

Because it's backed by Tether Gold (XAU₮), aUSDT has more value in collateral than tokens issued, offering stability and reliability for payments, trading, and savings. As such, aUSDT is a unique digital asset combining the stability of the U.S. dollar with the benefits of gold, which makes the asset an interesting option for making payments, trading, settling transactions, or storing savings.

Need a refresher on USDT? If so, check out our guide to the stablecoin here.


What is aUSDT and how does it combine the U.S. dollar with gold?

Alloy, or aUSDT, is a digital asset launched by Tether in June 2024. The token is pegged to the U.S. dollar and over-collaterized by Tether Gold, granting aUSDT the stability of value with the everyday usability of a digital currency.

How does the Alloy platform support the creation and management of aUSDT?

Tether's Alloy platform supports aUSDT and other tethered assets. Users can mint aUSDT on Ethereum and use Tether Gold as collateral. Meanwhile, the platform adapts to different collateral and backing mechanisms, preserving asset security and trustworthiness.

What are the benefits of using aUSDT for payments and savings?

aUSDT is relatively stable like the U.S. dollar, which makes it reliable for everyday transactions. Meanwhile, because the asset is backed by gold, it benefits from the commodity's low volatility, which helps to preserve the token's purchasing power, especially during economic uncertainty.

How does over-collateralization help maintain the stability of aUSDT?

Over-collateralization protects the stability of aUSDT by keeping more gold in store as collateral than the total value of the tokens issued. This safeguard helps to absorb any change in the value of gold, keeping aUSDT stable during market volatility.

What role do smart contracts and price oracles play in managing aUSDT?

Smart contracts on Ethereum manage the processes involved in aUSD minting and collateral, providing transparency and security. Meanwhile, price oracles provide real-time data on the value of gold, which help smart contracts to adjust collateral values and maintain proper backing for aUSDT tokens. This system contributes to aUSDT's stability and reliability.

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