Over $126M USDT Frozen in 2025: How to Mitigate Risks

The regulatory enforcement in the stablecoin sector is continuously intensifying. As the issuer of USDT, Tether's freezing operations against various addresses have sounded a risk warning for the industry. In 2025, Tether added a total of 4,163 unique addresses to a blacklist, freezing $1.26 billion in funds, of which 55.6% ($698.42 million) was destroyed, and only 3.6% of the blacklisted addresses were unfrozen during the year. Behind these figures lies a profound transformation in the stablecoin regulatory landscape, and it also presents an urgent risk management challenge for all USDT users.

We analyzed all AddedBlackList (add to blacklist), RemovedBlackList (remove from blacklist), and DestroyedBlackFunds (destroy black funds) events related to USDT on Ethereum (ERC20) and Tron (TRC20) throughout 2025, and found the following two conclusions.

1. More than half of the frozen USDT was ultimately permanently destroyed.frozen in total throughout the year1.26 billionTether has burned a total of698 millionU.S. dollars, accounting for 55.6% of the total value of frozen funds. This data indicates that most of the blacklisted funds are associated with closed investigations. Note that destroyed funds are usually recast to victims or law enforcement agencies.

2. The proportion of addresses removed from the blacklist is relatively low.In 2025, Tether added a total of 4,163 unique addresses to its blacklist, and only 150 addresses (3.6%) were removed from the blacklist in the same year. In addition, another 231 address removal incidents in 2025 involved addresses that had already been blacklisted before 2025. This means that once an address is added to Tether's blacklist, the likelihood of it being successfully removed afterward is extremely low.

From the frozen data of 2025, Tether's blacklist operations show significant structural characteristics and trend changes, providing an important reference dimension for market participants.

First, the on-chain distribution differs significantly, with TRON becoming a high-risk area.Among the blacklisted addresses in 2025, 84.2% (3,506 addresses) are from the TRC20 (Tron) ecosystem, corresponding to $853 million in frozen funds, reflecting the preference of illegal activities for chains with low transaction costs and fast confirmation speeds; although ERC20 (Ethereum) addresses account for only 15.8% (657 addresses), the average frozen amount per address reaches $613,000, 2.5 times that of TRC20 addresses, highlighting the regulatory attention on large amounts of funds on the Ethereum chain.

2025 USDT blacklist: Chain distribution

Secondly, the time dimension shows a concentrated peak, with notable law enforcement characteristics on weekends.July became the peak month for annual freezes, with 1,158 addresses frozen in a single month, corresponding to $154 million in funds. This surge is highly correlated with the implementation of the GENIUS Act and global anti-terrorism joint operations. In terms of weekly distribution, Saturday is the most active day for freezes (accounting for 22.4%), while Sunday drops to 2.1%, indicating that compliance monitoring needs to cover all hours.

USDT Monthly Freeze Volume on Each Chain in 2025

Finally, the long-term trend continues to tighten, with the scale of freezes increasing year by year.From 2023 to 2025, Tether has cumulatively frozen over $3.29 billion in funds involving 7,268 addresses. In early 2026, Tether froze $182 million in funds from five TRON addresses in a single operation, signaling that regulatory efforts will further intensify, and compliance has shifted from an "optional choice" to a "mandatory requirement."

Combined with Tether's official statements, public disclosures, and industry practices, the freezing actions mainly originate from three compliance scenarios, all of which revolve around legal regulatory requirements and risk prevention.

First, responding to law enforcement requests, which is also the primary trigger path for addresses being frozen.Tether has established in-depth cooperation with more than 275 law enforcement agencies in 59 jurisdictions worldwide, and it has a high level of flexibility in freezing operations—freezing of relevant addresses can be executed based solely on verification requests from cooperating law enforcement agencies, without the need for a formal court order; in case of emergencies, freezing measures can even be taken based on informal email notifications. According to statistics, Tether has cumulatively processed more than 900 law enforcement freezing requests in the past three years, with over 50% of the requests initiated by U.S. agencies, highlighting the concentration of law enforcement demand in Europe and the United States.

Secondly, actively implement sanctions compliance requirements and fulfill international regulatory obligations.Since December 2023, Tether has officially launched an active sanctions screening mechanism. For all addresses appearing on the OFAC (Office of Foreign Assets Control) Specially Designated Nationals (SDN) list, Tether will proactively execute freezing operations without requiring any external institution to intervene or drive the process. In the early stages of implementing this policy, Tether quickly completed a batch freeze of 161 addresses on the list, fully demonstrating its strict adherence to international sanctions regulations and its determination to ensure compliance.

Thirdly, relying on blockchain intelligence to carry out proactive risk prevention and control.Through in-depth collaboration with the T3 Financial Crime Joint Unit, Tether can proactively identify and freeze related addresses associated with various illegal financial activities such as hacking attacks, telecom fraud, and terrorist financing. Some freezing operations are even conducted prior to formal law enforcement requests, achieving preemptive risk control. As of October 2025, this joint unit has successfully frozen over $300 million in illicitly associated assets across 23 jurisdictions globally, effectively curbing the spread of illegal funds.

Faced with the continuously escalating risk of freezing, passive responses are no longer sustainable. It is necessary to build an active prevention and control system through professional KYT (Know Your Transaction) tools. BlockSec Phalcon Compliance, with its ultimate convenience and precise risk control capabilities, provides market entities with efficient solutions.

Precise pre-screening to avoid source risks.A comprehensive scan of the counterparty address before a transaction is the first line of defense against freezing. Phalcon Compliance supports instant scanning without the need to register an account; simply input the address or transaction hash to obtain a risk score. It not only covers the Tether blacklist but also integrates with the OFAC sanctions list, known scam addresses, mixing service nodes, and over 4 million tagged addresses, enabling cross-20+ blockchain, full-dimensional risk identification, far surpassing the basic screening of merely checking contract status in traditional methods.

Real-time monitoring during events, tracking dynamic risks.A single static screening cannot cope with the dynamic changes of address risks. 33.7% of the blacklisted addresses had zero balance when frozen, meaning the risk was exposed after the transaction was completed. Phalcon Compliance's real-time monitoring function can track multi-hop fund flows, processing more than 500 transactions per second and analyzing over 200 risk signals. When the risk level of a counterpart address changes (e.g., associated with sanctioned entities), alerts are pushed through multiple channels to help promptly block risky transactions.

Post-event compliance documentation strengthens the foundation for response.The platform supports one-click generation of Suspicious Transaction Reports (STRs) that meet FATF standards, adapting to regulatory requirements in more than 27 jurisdictions, and fully documenting the entire process of screening, monitoring, and handling. These compliance records will serve as key evidence when facing regulatory inspections or appeals against mistaken freezes, significantly improving the efficiency of issue resolution.

Compared to the complex operation of querying contract status through a blockchain browser, Phalcon Compliance provides a more convenient and comprehensive method for verifying freezing status, balancing professionalism and usability.

Minimalist operation process, results in seconds.Users do not need to learn contract function query methods. Simply visit the Phalcon Compliance product page, enter the wallet address to be queried, and quickly obtain whether it is listed on the Tether blacklist, while simultaneously displaying the address-related risks (such as whether it has touched sanctions lists, or has had fund transactions with illegal activity addresses). It not only informs "whether frozen," but also explains the "reason for risk."

Full coverage of multiple chains, no blind spot verification.Whether the wallet is in TRC20 or ERC20 format, verification can be completed through the platform, avoiding query omissions caused by chain differences. The platform's millisecond-level API response speed ensures rapid decision-making in emergency scenarios, while also supporting batch query functions to meet the compliance needs of enterprise-level batch transactions.

If an address is mistakenly placed on a blacklist, it is necessary to actively respond during the investigation delay period before fund destruction, while relying on compliance records to maximize the success rate of appeals.

Step one, confirm the freeze status and associated reasons.Through Phalcon Compliance verification to check the frozen status, while organizing the transaction records, clarify key information such as whether it is involved due to the counterpart address, and whether the source of funds is legal, to avoid making blind appeals due to unknown reasons. Note that freezing (addBlackList) and destruction (destroyBlackFunds) are two separate operations; the former is a temporary lock, while the latter is a permanent disposal. Appeals must be completed before destruction.

Step two, file a complaint through multiple channels.Submit your request through the official Tether channels first, visit the Tether official website contact page (https://cs.tether.to), and provide materials such as the frozen address, complete transaction records, and proof of the legal source of funds; if it is related to an investigation by law enforcement agencies, you can contact the corresponding agency to explain the situation, and the agency will coordinate with Tether to unfreeze the funds. This is the main path for 150 successfully unfrozen addresses in 2025. If necessary, you can hire a lawyer with experience in handling the seizure of encrypted assets to protect your rights through legal means.

Third step, rely on compliance records to strengthen the appeal.Submit compliance materials generated by Phalcon Compliance, such as address screening reports and transaction monitoring logs, to demonstrate that adequate due diligence has been fulfilled. If the freeze is a mistake, this can significantly increase the probability of unfreezing. At the same time, be vigilant against fraud. Any claims that they can "break the contract to unfreeze" are scams. The blacklist can only be adjusted by the Tether multisig governance team.

With the implementation of the GENIUS Act, stablecoin issuers have been included in the regulatory scope of "financial institutions," and a clear deadline for full compliance by mid-2028 has been set. Tether's operations against blacklists are likely to intensify further. For market participants, building an active compliance system based on professional KYT tools is not only a necessary means of risk prevention and control, but also a core competitiveness to adapt to the new industry landscape. BlockSec Phalcon Compliance provides low-threshold compliance solutions for various entities with a minimalist experience, accurate risk control, and flexible pricing, helping them move steadily forward in the wave of regulatory upgrades.