The case where TUSD reserve assets were misappropriated by the custodian ushered in positive developments: the institutional torture behind Sun Yuchen's assistance in defending rights and winning the lawsuit
A few days ago, aroundTrueUSD(TUSD)'s $500 million reserve assets were illegally misappropriated by the custodian party, causing wavesTRONoriginatorsSun YuchenSupporting Techteryx's successful rights protection section; a global ban and freeze order issued by the Dubai International Financial Center Court (“DIFC Court”) has achieved phased results for the global recovery of TUSD reserve assets.
In late October 2025, the DIFC court made the keyrulingIt issued a global freeze order on funds involving approximately US$456 million in TUSD reserves. The funds were previously transferred by the custodian to the Dubai entity without full disclosure, triggering a crisis involving the trust.
The DIFC court's ruling means that illegally misappropriated reserves are officially included in the legal protection framework, and it also injects strength into TUSD's continued stability and market trust.
In the history of stablecoins, such cross-border judicial intervention is not uncommon, but the complexity of TUSD's scale and structure has made it a key event for the industry to re-examine “off-chain reserves” and custodian risks.
1. Illegal Transfer of Reserve Funds: Black Box Structure Combining Trust Loopholes and Cross-border Fraud
According to the design, TUSD is a dollar-anchored stablecoin, and its reserves must be stored in a highly liquid, payable form, and managed by a third-party custodian.
In 2020, after Techteryx completed the acquisition of TUSD, in accordance with the principle of business continuity, the management of reserves was entrusted to Hong Kong digital asset trusts First Digital Trust (FDT) and Legacy Trust under the arrangement of the original operator TrueCoin (TUSD side), which should have been a standard practice to implement the principle of “separate accounts and careful custody”.
However, according to the indictment documents of the Hong Kong High Court and materials publicly disclosed by the Dubai courts, the actual operation of funds by the above trust institutions completely contradicts the public promise of “transparent escrow.”
TUSD reserve relationship chart
Subsequently, Techteryx “invested” hundreds of millions of dollars of reserves into a Cayman fund Aria Commodity Finance Fund (“ACFF”) on FDT's advice. Between 2021 and 2023, FDT and Legacy Trust continued to transfer funds to the accounts of Aria DMCC, a private Dubai company, without authorization from Techteryx and falsifying investment instructions. The relevant account holder had a family relationship with ACFF's fund manager Matthew Brittain, which meant that reserve assets were eventually transferred to a private entity linked to the manager.
After Techteryx discovered that this batch of funds had been illegally misappropriated and transferred, in order to protect the interests of TUSD holders, Sun YuchenFinancial support of US$500 million was provided to Techteryx from personal funds.
The DIFC court stated in the reasons for the judgment that the defendant was unable to reasonably explain why the funds were transferred to the affiliated company in an unauthorized manner. The true ownership of the funds lacked evidence to support them, and there was a real risk of “being further transferred.” As a result, freezing has become the only option that can “stop the bleeding first, then try.”
2. “Responsibility” at critical moments sets a new benchmark for the industry
In order to prevent off-chain risks from spreading to the holder level, Sun Yuchen certainly chose to adopt the idea of “first ensuring stable operation, then fully prosecute and collect funds” before the judicial process was completed, to intervene in the processing. Its core goal is not to replace custodian responsibilities, but rather to limit risk within the custodian side so that TUSD's payment order is not impacted by reserve disputes.
Similar treatment methods have also played a key role in the history of traditional finance.
For example, in 2008, J.P. Morgan Chase bought Bear Stearns (Bear Stearns) on an emergency basis under the coordination of the US Treasury Department. At the time, Bearsden faced bankruptcy due to rapid depletion of liquidity, and its default could quickly spread to the wider financial system. J.P. Morgan completed the undertaking in a very short time, stabilizing the asset security and market order of the relevant counterparty.
The TUSD case had similar characteristics:
The escrow system has structurally failed under the chain, and users are the most vulnerable.
Under such circumstances, the third party undertakes funds at the crisis point, which not only protects users' rights and interests, but also gains a time window for subsequent cross-border prosecution.
Therefore, the significance of Sun Yuchen's action lies not only in the specific amount of support, but also in establishing a logic of responsibility for the stablecoin industry that lacked clear practice before:
When there is a problem with the off-chain escrow system, stablecoins should come firstprotect users,Instead of transferring risk directly to the market.
This principle has rarely been implemented in the crypto industry in the past, and the TUSD incident provides a realistic example for the industry to refer to.
3. The institutional gap was brought to the front of the stage: the custodian side is the real weak point of stablecoins
At a press conference on April 3, Sun Yuchen said bluntly that the incident had essentially touched the bottom line of integrity in the financial system.
He said, “These assets are public funds. To protect the public interest and maintain Hong Kong's reputation as an international financial center, I have decided to provide liquidity support. In addition to being shocked at the scale of this fraud, I feel a great deal of responsibility.”
These statements push stablecoin custody issues into mainstream public issues, enabling regulators to more directly see the impact that gaps in the off-chain system may have on real users.
August 2025, Hong KongStablecoin RegulationsOfficially effective, the Hong Kong Monetary Authority began managing the issuance of stablecoins through a licensing system, including “fiat reference stablecoins” within the scope of regulation. The core of the regulation emphasizes the basic principles on the issuer side: stablecoins must be backed by redeemable fiat currency, maintain full reserves, and ensure smooth redemption.
However, in the current system in Hong Kong, the implementation details of the escrow side are still being refined in stages: what qualifications should reserve custodians meet, how to enforce account isolation, whether the escrow structure allows investment, how to implement cross-border entrustment and penetrating audits... These are all more complicated than “issuance compliance,” and are also more likely to have gaps between the system and reality.
Hong Kong Legislative Council member Ng Kit-chong also expressed his views on the trusteeship system. He pointed out that since Hong Kong has not yet established a complete escrow regulatory framework, many Web3 companies often use trust companies as the basis for third party hosting. If the operation is standardized, trusts can be a supplementary institutional arrangement; however, in the absence of mandatory supervision and review mechanisms, this gap in the system may also be exploited by criminals, ultimately undermining the confidence of the outside world in Hong Kong's financial center.
Therefore, how to manage reserves and how to penetrate supervision is a key part that Hong Kong urgently needs to complete in the next step.
IV. The next stage in the stablecoin industry
Currently, the crypto market is becoming more volatile, and many investors' strategies are shifting from chasing high returns to emphasizing risk control and survival priorities. As capital flows back into stablecoins, the stablecoin circuit itself is also fragmenting: traditional fiat-backed assets still provide basic liquidity, and “yield stablecoins” designed around real income, on-chain credit, and risk stratification are rapidly increasing.
But no matter how innovative the structure is, one consensus cannot be avoided:
Transparency, verifiability, and accountability are the true “bottom line” of stablecoins.
The success of the TUSD reserve misappropriation case is an important point for the industry to reunderstand the bottom line.
Today, in particular, the speed at which digital assets flow across borders far exceeds the speed of regulatory response in traditional financial systems. When funds can cross multiple jurisdictions within minutes, a transparent, enforceable, and accountable guarantee mechanism becomes the most critical yet scarce “underlying facility” in the stablecoin system.
From a global perspective, mainstream regulators are struggling to keep up with this change:
The US incorporated stablecoin custody and reserve disclosure into the federal regulatory framework through the GENIUS Act;
EU MiCA officially came into effect, standardizing the issuance and custody of “asset-backed stablecoins”;
Dubai DIFC demonstrated judicial capacity for cross-border asset protection in this case.
The regulatory logic is being extended from traditional finance to digital assets, which is also forcing the industry to speed up self-healing. More and more projects are beginning to actively improve transparency. From more frequent disclosure of reserves and third-party audits, to disclosure of escrow addresses, Merkle Tree reserve certification, to the new model of “off-chain assets+on-chain verification”, the industry is filling up blind spots in the past and redefining “trustworthiness” standards.
In this context, the TUSD case is not only a legal characterization of criminal acts, but also a mirror, reflecting the institutional gaps in off-chain hosting, and the direction the industry must embrace in the future: from self-discipline to institutionalization, from opacity to verifiability, and from a single jurisdiction to cross-border collaboration.
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