What's USDT0 and how do I use it?

USDT0 is the unified liquidity network for Tether (USDT), the world's most widely used stablecoin. Unlike regular USDT which exists in fragmented versions across different blockchains, USDT0 creates a single canonical version that works seamlessly across multiple Layer 2 networks.

Key differences between USDT0 and USDT:

• One USDT pool instead of fragmented versions across chains

• No wrappings required which eliminates the need for wrapped tokens or complex bridges

• Every USDT0 transfer is verifiable and backed 1:1 by canonical USDT

• Powered by LayerZero's Omnichain Fungible Token (OFT) standard

• Includes compliance-ready features like token address freezing for institutional confidence

Which chains support USDT0 through OKX?

USDT0 is now available across our ecosystem with multi-chain support. Supported networks:

• X Layer (OKX's Ethereum Layer 2)

• Arbitrum

• Optimism

• Polygon

• Unichain

• Berachain

How do I deposit and withdraw USDT0 on OKX?

USDT0 deposits and withdrawals are seamlessly integrated into the existing OKX experience.

An example of transactions process with USDT0

For OKX Exchange:

• USDT0 appears as native USDT in your exchange interface

• Select your preferred supported network (X Layer, Arbitrum, Optimism, etc.)

• Deposit/withdraw as you would with regular USDT

• No additional steps or complex procedures required

For OKX Wallet:

• USDT0 is automatically recognized and displayed

• Cross-chain transfers work natively without bridges

• Same user interface and experience as regular USDT

• Instant access across all supported networks

Note: the USDT/USDT0 token contract address remains unchanged for your convenience.

What are the benefits of using USDT0 compared to traditional bridged stablecoins?

USDT0 offers significant advantages over traditional bridged or wrapped stablecoins:

• Single liquidity pool instead of multiple wrapped versions

• Direct cross-chain transfers without bridge delays

• No bridge smart contract risks or wrapped token complications

This means there is no more confusion about which USDT version is "authentic" and you can gain access to deeper liquidity pools across all supported chains while enjoying reduced fees without expensive bridge transaction costs.

Is USDT0 safe and how is it backed?

USDT0 maintains the same security and backing standards as canonical USDT with additional safety features. Every USDT0 token is backed 1:1 by canonical USDT held by Tether and powered by LayerZero OFT Standard, a proven, audited cross-chain infrastructure that has processed billions of cross-chain value.All cross-chain movements are cryptographically verifiable, designed to meet institutional and regulatory standards with full visibility into token movements and backing.

What's next for USDT0 and X Layer integration?

The USDT0 launch on X Layer is just the beginning of a broader strategic roadmap:

• Further integration with more DeFi protocols and applications on X Layer

• Enhanced SDKs and documentation for developers building with USDT0 and other stablecoins

• Educational resources and simplified onboarding flows

• Continued improvements to speed and cost efficiency

Which markets support USDT0?

USDT0 is available worldwide, except in the European Economic Area (EEA) region.

I'm holding Wrapped USDT on X Layer. Do I need to do anything?

Wrapped USDT on X Layer is being phased out. USDT0 will be at the center of X Layer’s stablecoin future, so start migrating today.

• Old USDT address on X Layer: 0x1e4a5963abfd975d8c9021ce480b42188849d41d

• New USDT0 address on X Layer: 0x779Ded0c9e1022225f8E0630b35a9b54bE713736

There are two ways to bridge your Wrapped USDT to USDT0 on X Layer:

• Simply deposit your old USDT back to exchange and withdraw via X Layer to receive the USDT0

Deposit your USDT and withdraw via X Layer to get USDT0

• Use the USDT0 swap feature on OKX DEX

Swap your USDT from X Layer to get USDT0

We're building a comprehensive DeFi ecosystem around unified stablecoin liquidity to drive mainstream adoption of stablecoins and decentralized finance using stablecoins like USDT0 as a foundation for next-generation financial products.

We encourage community contributions and third-party integrations and we'll be shipping comprehensive resources for users and developers, to collaborate with more protocols and platforms and continuously improve based on your feedback.