Cryptocurrency exchange OKX has joined forces with Tether, the issuer of the widely used stablecoin USDT, to integrate USDT0 into its Ethereum Layer 2 network, X Layer. The partnership also extends the token’s availability to the OKX Wallet and Exchange, allowing users to directly deposit and withdraw USDT0 through the platform.
The move is expected to provide access to unified and composable liquidity across decentralized finance (DeFi) ecosystems. With this integration, users gain exposure to deeper liquidity on several major networks that support USDT0, including Arbitrum, Optimism, Polygon, Berachain, and Unichain.
Streamlining Transfers With Omnichain Technology
According to OKX, USDT0 operates on LayerZero’s Omnichain Fungible Token (OFT) standard. This framework ensures that every transfer is backed one-to-one by canonical USDT, creating a verifiable and transparent system. By eliminating the need for wrapped tokens or complex bridging solutions, the standard removes longstanding friction in stablecoin transfers.
The setup enables quicker settlements, smooth rollup-to-rollup transfers, and seamless movement of liquidity between OKX’s centralized exchange and decentralized markets. Industry observers believe this will enhance reliability while simplifying stablecoin operations for both developers and end-users.
X Layer as a Key Infrastructure
X Layer serves as OKX’s Ethereum Layer 2 solution designed to connect participants more efficiently to the broader Ethereum ecosystem. The network is fully integrated with OKX’s suite of products, which the company says helps deliver a secure and consistent user experience.
Executives at OKX have described X Layer as a new foundation for digital value exchange. They emphasized that by collaborating with Tether to expand USDT0 availability, the platform is working to provide customers with stable omnichain liquidity across their preferred networks. They further indicated that this integration aims to bridge centralized and decentralized finance with greater speed, simplicity, and interoperability.
DeFi just leveled up.
In partnership with @Tether_to, USDT0 — the unified liquidity protocol for USDT, the world’s largest stablecoin — is now live on X Layer, OKX, and Wallet.
✅ One USDT across 12+ chains incl. Arbitrum, Optimism, Unichain, & Polygon.
Read:… pic.twitter.com/DvEFwwt5o5
— OKX (@okx) September 9, 2025
Rapid Expansion of USDT0
Since its launch less than a year ago, USDT0 has reportedly surpassed $11.3 billion in bridge volume across more than 251,000 cross-chain transfers. It currently supports nine chain pathways, making it the most active OFT within the LayerZero ecosystem. This rapid growth highlights its rising importance in the DeFi space.
Representatives connected to USDT0 have noted that stablecoins are increasingly becoming the foundation of on-chain finance. They pointed out that USDT0’s presence on OKX and X Layer offers millions of users and builders access to unified, cross-chain liquidity at scale. They also suggested that the broader goal of the expansion is not only to add more chains but also to remove barriers that have historically slowed stablecoin adoption, making them instantly usable across networks.
Strengthening Stablecoin Adoption
By incorporating USDT0 into its Layer 2 network, wallet, and exchange, OKX is positioning itself as a provider of multichain infrastructure. The integration is seen as a strategic step toward accelerating mainstream acceptance of stablecoins within global finance.
In parallel, Tether has been pursuing further expansion. In August, the company announced plans to introduce USDT on RGB, a next-generation protocol designed for issuing digital assets on Bitcoin. The protocol, which recently went live with its 0.11.1 release, is intended to broaden Bitcoin’s utility beyond a store of value. RGB’s framework is expected to support private, scalable, and user-controlled issuance of assets, opening the door for stablecoins to function natively on the Bitcoin blockchain.
