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What happens to frozen USDT on TRON: unfreezes and burns

A Tether freeze is not always the end of the story. The USDT contract on TRON can later lift a freeze or destroy the frozen balance. FreezeCheck read every such event from November 2025 to November 2026 and matched it to the freeze it followed.

Unfreeze and burn: what each one does

• Freeze (addBlackList, event AddedBlackList). The address can no longer send USDT. It can still receive it. How a freeze is proposed and executed is described in the signing window.
• Unfreeze (removeBlackList, event RemovedBlackList). The address is taken off the blacklist and can send USDT again. The balance stays where it was.
• Burn (destroyBlackFunds, event DestroyedBlackFunds). Works only on an address that is on the blacklist. The contract sets that address's USDT balance to zero and reduces the total supply by the same amount. The event records the address and the amount. Whether an equal amount is issued to someone afterwards is not part of this event and is outside this study.

Key findings

• Most freezes stay in place. Of 4,199 addresses frozen in the year, 663 (15.8%) were unfrozen by November 7, 2026 and 259 (6.2%) had their balance burned. No address was both unfrozen and burned. 11 unfrozen addresses were frozen again later.
• One day explains most unfreezes. On May 14, 2026, between 19:29 and 19:55 UTC, 447 addresses were unfrozen in 447 separate transactions. That is 61% of all unfreezes of the year. All 447 had been frozen between March 25 and April 2, 2026, during the two busiest freeze weeks of the year. Of the 602 addresses frozen in those nine days, 447 (74%) were released on that one evening, after a median of 49 days.
• Outside that day unfreezes are rare and faster. The other 216 unfreezes with a known freeze date came after a median of 20 days. 11 came within a day of the freeze. The longest freeze before an unfreeze lasted 230 days.
• Burns come months later. Apart from 4 balances destroyed seconds after the freeze, no address frozen in the year was burned sooner than 97 days after the freeze. 179 burns came 90–180 days after the freeze and 76 later than that. The median was 149 days.
• Most burned money was frozen earlier. 294 of the 553 burns hit addresses frozen before November 2025: 210.7 million USDT. Addresses frozen within the year accounted for 107.9 million.
• Burns are large and concentrated. The median burn was 150,020 USDT. 82 burns of 1 million or more made up 227.3 million (71%). The ten largest made up 74.3 million (23%). Three burns on November 26, 2025 destroyed 27.1 million in one day.

How long freezes last before an unfreeze

Time from the last freeze of the address to the event. The data starts on November 4, 2025, so burns of addresses frozen within the year could not be older than a year; the 30–90 day bucket of unfreezes is dominated by May 14.

The largest burns

Amounts are taken from the DestroyedBlackFunds event. Every burn of the year is in the CSV.

Why it matters

• For anyone holding or receiving USDT. Most freezes on TRON stay in place: in this year about one frozen address in six was released. Money sent to a frozen address is stuck with it, and if the balance is later burned, it is gone from that address for good.
• For investigators and compliance teams. A blacklist is not append-only. Lists of frozen addresses need the unfreeze events too, otherwise released addresses keep showing as frozen. The CSV has every event with its transaction hash.
• For researchers. Burns show how much frozen value is actually destroyed and how long it takes. On TRON in this year: 318.6 million USDT, typically three to six months after the freeze.

Method

• Events. All RemovedBlackList (731) and DestroyedBlackFunds (553) events of the USDT contract on TRON (TR7NHq…Lj6t) from November 4, 2025 to November 7, 2026, read through TronGrid. Addresses are decoded from the event data.
• Freeze dates. All AddedBlackList events of the same period (4,221 freezes of 4,199 addresses), each matched to its multisig proposal as described in the signing window. Each unfreeze or burn is linked to the last freeze of the same address before it.
• Freezes before the period. 68 unfreezes and 294 burns concern addresses frozen before November 4, 2025. Their freeze date is not in this dataset; the CSV leaves it empty and they are counted separately, not in the medians.
• Amounts. The burned amount is the _balance field of DestroyedBlackFunds, in USDT with 6 decimals. Balances at the moment of an unfreeze are not part of this study.
• Scope. The study describes on-chain events only. It does not identify the owners of the addresses or the reasons for a freeze, an unfreeze or a burn.

What we do with it

For media and researchers

Data under CC BY 4.0: every unfreeze and burn with freeze time and transaction hashes, CSV, chart in English and Russian. Questions and full exports: hello@freezecheck.org. More: the signing window: Tether freezes are visible before they happen, who Tether freezes and who it doesn't, press page.

Practical guides: Tether blacklist: how to check an address · check USDT for a freeze · all research.