USDT Returns to Bitcoin on RGB Rail Tether Cannot Freeze

Utexo, a Tether-backed infrastructure issuer, plans to start issuing USDT on the Bitcoin network in October 2026 using the RGB protocol. Tether chief executive Paolo Ardoino wrote on X that USDT is “coming home.” Utexo holds a commercial licence from Tether to issue the token on Bitcoin.

Founded in 2025, Utexo raised $7.5 million in a seed round led by Tether alongside Big Brain Holdings, Portal Ventures and Franklin Templeton. The company has said it will offer APIs, software development kits and cloud services to exchanges, wallet providers and payment firms.

RGB uses client-side validation and anchors token ownership to specific Bitcoin unspent transaction outputs, or UTXOs. That design keeps most issuance and transfer data off Bitcoin’s public ledger. Because tokens are tied to UTXOs rather than account balances in a smart contract, Tether cannot perform issuer-level freezes on Bitcoin the way it can on some other networks.

To address sanctioned or illicit outputs, Utexo will distribute a blacklist of UTXOs to exchanges and other institutions. Enforcement of that blacklist depends on those counterparties refusing to accept or redeem the flagged outputs.

Utexo lists three primary use cases for native USDT on Bitcoin: private transfers that limit what appears on the public ledger, direct swaps between native BTC and USDT without routing through an exchange, and lending arrangements where borrowers post native bitcoin as collateral without converting it to a wrapped token.

Utexo has integrated parts of its stack with the Lightning Network and in August added an RGB Lightning module to Tether’s Wallet Development Kit. The company has not published a precise launch date beyond the October 2026 window.

Utexo co-founder Viktor Ihnatiuk discussed plans to promote USDT adoption in Europe and reported meetings with representatives from Morgan Stanley in Washington; no formal partnership has been announced. Distribution in the European Union faces limits under the Markets in Crypto‑Assets rules, where issuers that do not meet the bank deposit reserve requirement face restrictions. Tether declined to meet that requirement, and a separate MiCA-compliant dollar token has launched across multiple chains this week.

USDT first ran on Bitcoin in 2014 via the Omni Layer but became impractical as fees and congestion rose; Tether ended direct support for Omni in 2023. RGB addresses cost and throughput issues that affected Omni, but the protocol has limited production use at scale so far.

Tether holds roughly 100,000 BTC, about $8.4 billion at mid‑August prices. Ardoino has said Tether will continue to build on existing networks rather than launch a dedicated Tether blockchain.