USDT as a control tool: why Tether can take your money, but Bitcoin cannot
When the capitalization of a stablecoin exceeds $186 billion, it ceases to be just a digital dollar — it becomes a system. Today, USDT is a global financial instrument used by millions of people for savings, transfers, and trading. But behind the convenience lies a fundamental feature: the issuer can freeze funds on any address at any time. And it does so regularly.
In the last six months alone, Tether has added 2,362 addresses to its blacklist on the Ethereum and TRON networks, blocking $1.64 billion. Typically, hackers and scammers are targeted, but the mechanism itself works in such a way that even on a non-custodial wallet, you do not fully control the tokens. You own the private keys, but not the rules of the token.
How the freezing mechanism works
USDT smart contracts contain functions that allow the issuer to manage holders' funds. An address can be blocked (addBlackList) — then sending USDT from it becomes impossible, although the wallet itself will continue to receive tokens. The block can be removed (removeBlackList). Finally, there is the destroyBlackFunds function — the irreversible burning of USDT on a blocked address. After that, Tether has the right to issue an equivalent volume of tokens on another address — for example, to return them to fraud victims or transfer them under the control of law enforcement.
According to analysts, it takes an average of about two days between a blocking order and its execution on the network. The T3 Financial Crime Unit, created by Tether together with TRON and TRM Labs, can freeze funds within 24 hours. Since September 2024, the alliance has frozen over $450 million across 23 jurisdictions. The FATF calls this structure an "invaluable resource for law enforcement agencies."
Who gets blocked
Behind each block is an external request — usually from law enforcement. Tether acts without warning the holder and without an appeal procedure before the block. On-chain analysts like Chainalysis or TRM Labs assign risk levels to addresses, and if a wallet receives a high risk score, AML systems raise the assessment for related addresses as well. Sometimes, random users whose coins once passed through a recognized "dirty" address end up under restrictions.
This wouldn't work with Bitcoin. It has no administrator, no blacklist function, and no "big red button." It is impossible to take Bitcoin from its owner without the private keys. The risk of blocking shifts to the level of exchanges and exchangers — where users have their documents checked.
What this means for users
USDT is a debt obligation of a centralized issuer. You trust Tether that the token is backed by the dollar and that the company will not freeze your funds by mistake or at the request of authorities. As long as this trust is justified, the architecture itself remains vulnerable. Even diversifying between different stablecoins does not solve the problem — they are all built on the same principle.
Bitcoin is the only major digital asset that does not depend on decisions by an issuer, regulator, or bank. It cannot be frozen, seized, or burned by a third party's decision. But this does not mean Bitcoin is anonymous. All transactions are recorded in a public ledger and can be analyzed years later. Additional tools like CoinJoin or mixers, which break the on-chain link between addresses, are needed to maintain privacy.
Expert commentary: USDT has become a node in the global surveillance system — a private company connected to hundreds of agencies, capable of freezing "digital dollars" anywhere in the world. This is effective for fighting crime, but it undermines the very idea of financial autonomy. Bitcoin remains the only asset where control over funds truly belongs to the holder — not to an issuer, regulator, or bank.