Turkey has crossed a critical threshold in its fight against illegal betting and crypto-based money laundering. Stablecoin issuer Tether confirmed it acted on a formal request from Turkish authorities, freezing approximately $544 million in suspicious digital assets.

The funds are believed to be linked to online betting platforms operating outside the law.

In late January, the Istanbul Chief Public Prosecutor’s Office announced the seizure of crypto assets connected to illegal gambling and laundering activities. Bloomberg reported that Tether’s technical cooperation played a decisive role in the operation. As the investigation expands, total seized assets across Turkey have now surpassed the $1 billion mark.

Thousands of Wallets Now Blocklisted

Blockchain analytics firm Elliptic says stablecoin issuers — led by Tether and Circle — had blocklisted around 5,700 wallets holding nearly $2.5 billion by the end of 2025. Roughly three-quarters of those addresses contained USDT at the time they were frozen.

Tether told Bloomberg it has assisted law enforcement in more than 1,800 investigations across 62 countries, resulting in $3.4 billion in USDT being locked due to suspected criminal activity.

The numbers are striking. But scrutiny hasn’t faded.

USDT Remains Under Regulatory Pressure

Despite growing cooperation with authorities, USDt continues to draw attention from regulators.

Last month, US prosecutors charged a Venezuelan national with laundering nearly $1 billion — largely through USDT. Around the same time, blockchain researchers linked large USDt transfers to sanctions-evasion patterns.

Bitrace’s latest report paints an even broader picture: in 2024 alone, roughly $649 billion in stablecoin volume flowed through high-risk blockchain addresses. More than 70% of that activity involved Tron-based USDT.

Quiet traffic. Massive scale.

Tether’s Market Cap Pushes Past $187 Billion

Controversy hasn’t slowed Tether’s growth.

According to Cointelegraph, USDt reached a record $187.3 billion market capitalization in Q4 2025, adding $12.4 billion despite a wider crypto downturn triggered by October’s liquidation cascade. Rival stablecoins struggled — Circle’s USDC stayed flat, while Ethena’s USDe lost roughly 57% of its value.

Usage metrics also surged. Monthly active USDT wallets climbed to 24.8 million, representing about 70% of all stablecoin-holding addresses. Quarterly transfer volume hit $4.4 trillion across 2.2 billion transactions, setting fresh on-chain records.

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AMLBot data shows Tether has actively intervened on Ethereum and Tron, with $1.75 billion USDT denylisted on Tron alone. Tether works with over 275 law enforcement agencies across 59 jurisdictions, acting not only on court orders but also on hack alerts and ongoing investigations.

In July 2024, USDT freezes exceeded $130 million, with $29.6 million linked to Cambodia-based Huione Group on Tron.

Circle, on the other hand, takes a selective approach. On-chain data indicates USDC freezes occur only due to legal mandates or sanctions. Frozen funds remain locked until legal clearance is granted, and Circle does not support burn-and-reissue mechanisms like Tether.

Behavioral and Market Implications

Tether’s aggressive interventions help victims recover funds quickly and prevent fraud, which some investors see as a positive. However, extrajudicial freezes and international procedure disputes can harm user trust. Circle’s method prioritizes predictability and compliance, making it appealing to institutional investors.

Tether can freeze tokens without court orders when deemed risky. The amount of burned and reissued tokens reached $25–30 million in 2025 alone. This rapid action provides security for smaller investors, while institutional players prefer predictable frameworks.

Recent events, such as a $50 million USDT loss, highlight the importance of wallet-level protections and denylisted measures. As stablecoins integrate into daily finance, balancing user protection and centralized control remains a critical challenge.

Future Outlook and Institutional Strategy

Circle’s partnership with Bybit positions USDC as the default stablecoin for trading, payments, and savings products, emphasizing regulatory compliance and predictability. Tether’s focus on rapid intervention aims to minimize user losses. The stablecoin landscape will continue to reflect these contrasting strategies in market behavior and regulation.

2023–2025 Denylisted Data

• Tether USDT: 7,268 wallets, $3.29 billion

• Circle USDC: 372 wallets, $109 million

• USDT denylisted on Tron: $1.75 billion

• Tether burn-and-reissue: $25 million single month

• Circle USDC: funds locked until legal approval

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Garantex Shutdown, but Fund Movements Continue

After the US Treasury Department’s OFAC sanctioned Garantex in April 2022, and froze $27 million in USDT on March 6, 2025, the exchange halted all operations. Despite these actions, Global Ledger reports that Garantex shifted its remaining funds to Grinex.

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By March 13, 2025, over $60 million worth of ruble-backed A7A5 stablecoins had been laundered through wallet transactions and moved to Grinex. Analysts note that these transactions aimed to clean the asset trail and relaunch operations under a new identity.

Is Grinex Just a New Face of Garantex?

Global Ledger‘s findings indicate that Grinex is directly connected to Garantex, both on-chain and off-chain. Transaction patterns, wallet reuse, and user behaviors strongly link the two exchanges.

Furthermore, CoinMarketRating lists Grinex as a project by Garantex‘s original team, reinforcing claims that it is not an independent platform but a direct continuation of Garantex’s operations.

Transaction Volume Surpasses $68 Million

By mid-March, Grinex had surpassed $68 million in total trading volume, including over $2 million in spot market trades. This activity suggests that Garantex’s previous users have migrated to Grinex, continuing to trade despite sanctions.

On March 12, 2025, Aleksej Bešciokov, allegedly responsible for managing Garantex, was arrested in India by the Central Bureau of Investigation. He faces US charges, including conspiracy to commit money laundering.

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