Sandmark Research Reveals Tether Froze $339mn in Weekend Sweep

While other media outlets are reporting a freeze of $182mn, exclusive on-chain analysis by Sandmark reveals the true scope of the operation is significantly larger.

According to Sandmark research the stablecoin issuer actually froze $339.31mn in USDT during a single afternoon. The operation took place on 10 Jan between 4:21 PM and 10:50 PM (UTC). Over this six-hour window Tether blacklisted 19 wallets on the TRON network in what appears to be a highly targeted enforcement action.

The hidden whales

The discrepancy in the reported figures likely stems from the concentration of the funds. Sandmark data shows that the vast majority of the seized capital was held in just a handful of addresses.

Seven specific wallets alone accounted for $284.9 mn of the total. On-chain analysis indicates that these addresses had been largely dormant with minimal transactional activity for several months prior to the freeze. This "cold storage" behavior often allows such wallets to fly under the radar of standard monitoring tools until a blacklist event occurs.

The forensic link

The remaining $54.39mn was spread across a broader set of wallets with individual balances ranging from approximately $353,000 to $12mn.

While some of these addresses are associated with TRON Energy Delegates further analysis by Sandmark suggests a deeper link between these wallets and the larger dormant cluster. Several of the affected wallets had been freshly funded just five days prior to the freeze. They collectively received $44.97mn from a single source wallet.

Historical transaction data from 2024 indicates that this funding wallet is tied to some of the seven large dormant wallets. This provides a plausible explanation for why these newly active addresses were swept up in the ban.

The timing of the transfers proved critical. Of the $44.97mn that moved through this specific channel Tether successfully froze $38.98mn. However the speed of the illicit flows meant that the issuer missed a portion of the funds. Sandmark research confirms that the remainder had already reached centralized exchange deposit addresses before the enforcement action was executed.

Tether has not yet issued a public statement regarding the specific reason for the freezes. Yet the data paints a clear picture. This was not a random scattershot approach but a precision strike against a specific syndicate that attempted to wake up dormant funds and move them to exchanges. The sheer scale of the $339mn seizure marks a significant escalation in the role of Tether as a global compliance enforcer.