What's USDT0 and how do I use it?

Published on Sep 12, 2025Updated on May 29, 20262 min read

Q: What is USDT0? How is it different from regular USDT?

USDT0 is a cross-chain native USDT launched by Tether, designed to address issues such as liquidity fragmentation, high fees, and slow speeds when transferring traditional USDT across multiple chains. With USDT0, users can achieve seamless circulation across multiple Layer 2 networks. The main differences are:

  • USDT0 solves the problem of USDT liquidity fragmentation across different blockchains by establishing a unified liquidity pool on all chains.
  • It does not rely on wrapping or complex cross-chain bridges, reducing usage risk and complexity.
  • Every USDT0 transfer is verifiable and backed 1:1 by an equivalent amount of native USDT.
  • USDT0 adopts LayerZero’s OFT standard, supporting issuance, verification, and transfer of cross-chain tokens, offering high security and scalability.
  • Supports compliance features such as address freezing to enhance institutional user confidence.

Q: Which chains does OKX support for USDT0?

  • USDT0 is now live in the OKX ecosystem and supports multi-chain usage.
  • Supported networks: X Layer, Unichain, Berachain, Optimism, Arbitrum, Polygon, Plasma

Q: How to deposit/withdraw USDT0 on OKX?

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Exchange:

  • USDT0 will be displayed as native USDT in the exchange interface.
  • Select the supported network (including X Layer, Unichain, Berachain, Optimism, Arbitrum, Polygon, Plasma).
  • Deposit/withdraw as you would with regular USDT.
  • No extra steps or complex operations required.

OKX Wallet:

  • USDT0 will be automatically recognized and displayed.
  • Cross-chain transfers can be completed directly, no need to use a cross-chain bridge.
  • The operation interface is the same as regular USDT.
  • Can be used on all supported networks (including X Layer, Unichain, Berachain, Optimism, Arbitrum, Polygon, Plasma).

Note:

  • When depositing USDT0, be sure to select the correct network. Depositing via unsupported networks may result in asset loss.
  • USDT and USDT0 are tokens with different contract addresses on-chain, and can be considered different versions of the same token. Please ensure you select the correct token and contract address when depositing or withdrawing.

Q: What are the advantages of USDT0 compared to traditional cross-chain stablecoins?

  • Unified liquidity pool, avoiding liquidity fragmentation caused by multiple wrapped token versions.
  • Cross-chain transfers can be completed directly, avoiding delays caused by cross-chain bridges.
  • Avoids smart contract risks of cross-chain bridges and the complexity of wrapped tokens.

With USDT0, you no longer need to distinguish between different versions of USDT on various chains. You can transfer directly on all supported chains, enjoy deeper liquidity pools, and lower cross-chain fees.

Q: Is USDT0 safe? How is it backed?

USDT0 has the same security and backing standards as standard USDT, with additional security mechanisms.

  • Each USDT0 token is backed 1:1 by standard USDT held by Tether.
  • Based on the LayerZero OFT standard, this cross-chain infrastructure has been audited and supports secure transfer of large cross-chain assets.
  • All cross-chain operations can be cryptographically verified, meeting institutional and regulatory standards, ensuring complete transparency of token circulation and backing.

Q: What are the next steps for USDT0 and X Layer?

The launch of USDT0 on X Layer is just the starting point of the strategic blueprint:

  • Integration with more DeFi protocols and applications on X Layer.
  • Providing more comprehensive SDKs and documentation for developers to support USDT0 and other stablecoin development.
  • Launching usage guides and simplified onboarding processes for beginners.
  • Continuously improving speed and cost efficiency.

We are building a complete DeFi ecosystem around unified stablecoin liquidity to promote the adoption of stablecoins and decentralized finance. USDT0 can serve as the foundational asset for next-generation financial products. We welcome community contributions and third-party integrations, and will continue to release resources for users and developers, actively collaborating with more protocols and platforms, and continuously improving based on feedback.

Q: What should I do if I hold Wrapped USDT on X Layer?

Wrapped USDT on X Layer is being gradually phased out. In the future, USDT0 will become the core stablecoin of X Layer. We recommend you complete the migration as soon as possible.

  • Old Wrapped USDT contract address (X Layer): 0x1e4a5963abfd975d8c9021ce480b42188849d41d
  • New USDT0 contract address (X Layer): 0x779Ded0c9e1022225f8E0630b35a9b54bE713736

There are two ways to migrate:

  • Deposit the old USDT back to the exchange, then withdraw via X Layer to receive USDT0.

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For more information about USDT0, please visit USDT0.to or follow @USDT0_to on X.

For more information about X Layer, please visit web3.okx.com/xlayer or follow @XLayerOfficial on X.

Disclaimer: This product is not available in Europe.

Disclaimer
This content is provided for informational purposes only and may cover products that are not available in your region. It is not intended to provide (i) investment advice or an investment recommendation; (ii) an offer or solicitation to buy, sell, or hold crypto/digital assets, or (iii) financial, accounting, legal, or tax advice. Crypto/digital asset holdings, including stablecoins and NFTs, involve a high degree of risk and can fluctuate greatly. You should carefully consider whether trading or holding crypto/digital assets is suitable for you in light of your financial condition. Please consult your legal/tax/investment professional for questions about your specific circumstances. Information (including market data and statistical information, if any) appearing in this post is for general information purposes only. While all reasonable care has been taken in preparing this data and graphs, no responsibility or liability is accepted for any errors of fact or omission expressed herein. Both OKX Web3 Wallet and OKX NFT Marketplace are subject to separate terms of service at www.okx.com.

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