Tether Freezes $1.45M in USDT on THORChain, Then Reverses the Move
USDT vaults blocked on THORChain for nearly two hours
THORChain's operations on the TRON blockchain were interrupted on October 9 after Tether blocklisted four of the protocol's USDT vaults. About 1.45 million USDT was affected. THORChain co-founder Chad Barraford and researcher Khal confirmed the freeze, and both later reported that the restrictions were reversed and swaps resumed.
The incident began around 1:36 p.m. UTC and ended by 3:58 p.m. UTC, leaving roughly two hours of stalled trading on the TRON-USDT route. About $363,000 in payouts were queued during the freeze.
What the reports show
- Four of THORChain's six TRON vaults were blocklisted at block 86958330, according to Khal's analysis.
- Those four vaults held about 93% of THORChain's TRON USDT.
- The freeze was reversed: Barraford said the addresses appeared unfrozen at 3:35 p.m. UTC, and Khal confirmed swaps had resumed by 3:58 p.m. UTC.
- Khal suggested the vaults may have been caught in a broader blocklist affecting roughly 30 other wallets.
- THORChain received no prior communication from Tether about the action, Barraford said.
Why a decentralized protocol can still be blocked
THORChain's vaults are managed by validator nodes that hold assets on external blockchains and handle incoming and outgoing transactions. Distributing signing authority among validators determines who can authorize payments from those accounts. However, the USDT tokens inside them remain subject to Tether's issuer controls, which operate separately.
Tether has stated that its wallet-freezing policy follows the U.S. Office of Foreign Assets Control (OFAC) sanctions list and extends to secondary-market wallets. THORChain itself noted in an October 1 blog post that while node operators can pause a chain or the entire protocol for safety reasons, they cannot selectively remove an individual swap. That means decentralizing transaction-signing authority does not remove the issuer's ability to freeze the token itself.
The cause of this specific freeze remains unconfirmed. THORChain drew scrutiny the day before when its September trading surge coincided with activity linked to the Bitget hack, and the protocol stated it would not selectively block addresses.
What's still unclear
The reason Tether blocklisted the four THORChain vaults has not been publicly explained. Neither THORChain nor Tether has provided an official statement confirming whether this was part of a broader sanctions-related action or something else.
Why this matters
The event highlights a ongoing tension between decentralized finance and centralized stablecoin issuers. Even when a protocol like THORChain distributes control across many validators, the underlying token can still be frozen by its issuer, limiting the censorship resistance that decentralization promises.
Sources
Newisty Editorial Team covers technology, cryptocurrency, digital products, online platforms, developer tools and the wider digital economy. Our content is researched from official sources, company announcements, public documentation, market data and other primary or reputable sources. Articles are reviewed and edited before publication for clarity, accuracy and useful context.