Back to basics for Tether. The issuer of the largest stablecoin on the market is preparing the return of USDT to Bitcoin, twelve years after issuing its first tokens. The Utexo project he supports promises private USDT transfers, direct exchanges between BTC and USDT, and bitcoin-backed loans. All without recording most of the transaction data in the public blockchain.
Utexo brings USDT back to Bitcoin without burdening the blockchain. To achieve this, Utexo relies on client-side validation, the approach developed on Bitcoin by the RGB protocol. The public registry only receives a “cryptographic commitment,” a fingerprint that proves the existence of the transfer without revealing its content. Amounts and recipients remain with the user.
Bitcoin only processes around seven transactions per second in the best case, and each byte written in a block is paid for at the market price. Scaling traffic from a $190 billion stablecoin through the main ledger would saturate the blocks in a matter of hours. Client-side validation circumvents the obstacle and adds confidentiality (which we recall is lacking in USDT on Tron as on Ethereum, where each transfer remains public and traceable for life).
Tether and Bitcoin, twelve years of failed reunion. USDT was also created on Bitcoin. The token was born in 2014 on the Omni Layer, the asset issuance layer grafted to the network of Mastercoin’s time. Due to a lack of sufficient volume to justify maintenance, Tether disconnected this support in 2023, at the same time as the Bitcoin Cash SLP. The offer was then concentrated elsewhere.
Since then, CEO Paolo Ardoino has repeated that the original network remains the natural destination for his stablecoin. Tether launched USDT on the Lightning Network in January 2025, via Lightning Labs' Taproot Assets protocol. Tokenized dollars could then travel on Bitcoin at the speed of instant payment. The volumes remain anecdotal compared to the tens of billions of dollars of USDT that change hands every day on Tron, which has become in a few years the main payment channel in tokenized dollars on the planet. Utexo attacks the floor above.
Exchange BTC for USDT and borrow without selling your bitcoins. Utexo also announces two functions that directly affect BTC holders. The first allows you to exchange bitcoins for USDT without going through a centralized exchange, therefore without entrusting your funds to a third party or suffering FTX-style counterparty risk.
The second function concerns credit. Borrowing dollars against your BTC without selling it has become one of the rare financial uses to take off: Coinbase has exceeded the billion dollars in loans backed by bitcoin distributed via the Morpho protocol, and Ledn like Strike are competing for the same market. All of these services require you to deposit your bitcoins with an intermediary or send them to a third-party chain. A loan settled in USDT directly on Bitcoin would eliminate this detour.
Tron and Ethereum still account for more than 80% of the USDT supply. Bitcoin therefore starts from almost nothing and will have to convince users accustomed to fees of a few cents. But with an argument that neither Tron nor Ethereum can offer their borrowers: it is the most liquid collateral on the market, and it is already in their wallet.
