USDT Migration Guide

Sei

09 Apr 2025 • 2 min read

This guide explains the differences between Kava USDT and USDT0 and shares the best practices for migrating from Kava USDT to USDT0.

Understanding USDT on Sei

What is Kava USDT?

On Sei Mainnet, a bridged form of USDT exists, which has been bridged from Kava via IBC.

What is USDT0?

USDT0 on Sei Mainnet is backed 1:1 by locked assets on Ethereum and ensures seamless interoperability across blockchain networks via the LayerZero protocol.

Recommended Best Practices

If you intend to support both Kava USDT and USDT0, the following best practices are recommended to ensure the best UX for your users.

Kava USDT

Ensure Kava USDT is clearly named as “IBC Bridged USDT” and the token symbol shows as “Kava USDT”.
Ensure reference to the Kava USDT token contract points to the correct token address on Sei.
- Original: ibc/6C00E4AA0CC7618370F81F7378638AE6C48EFF8C9203CE1C2357012B440EBDB7
- Pointer: 0xB75D0B03c06A926e488e2659DF1A861F860bD3d1

USDT0

Ensure USDT0 is clearly named as “USDT0” and the token symbol shows as “USDT”.
Ensure reference to the USDT0 token contract points to the correct token address on Sei.
- Original: 0x9151434b16b9763660705744891fa906f660ecc5
- Pointer: sei1fmsu3v448uny8hle52c3n8ygk3cgqz5a4j5283kx0q3ar3vs03mqa4v5ca

Additional Considerations

Make USDT0 the default option for deposits, withdrawals, swapping, and bridging mechanisms.
Update Top Tokens page, or similar pages on your app.

Frequently Asked Questions

USDT0	Kava USDT
Uses the OFT model for cross-chain interoperability	Bridged via IBC from Kava
Backed 1:1 by locked USDT on Ethereum	Backed by USDT on Kava locked in a smart contract
Official standard for USDT on Sei	Not interoperable with the OFT model
Seamless cross-chain transfers via LayerZero

What are the benefits of using USDT0 over Kava USDT?

Benefits of USDT0 include:

Can redeem 1:1 for USDT on Ethereum.
Supported by Layer Zero for seamless cross-chain transfers.
Eliminates reliance on fragmented liquidity pools and bridges.

How Can Users Swap from Kava USDT to other tokens on Sei Mainnet?

Developers can swap from Kava USDT through the following methods:

Use an IBC-enabled bridge app (like Skip) to transfer Kava USDT from Sei Mainnet to another blockchain.
Create a swapping mechanism or liquidity pool within their app on Sei Mainnet to help users migrate from Kava USDT.
Direct users to conduct these swaps on Symphony on Sei Mainnet.

How to Access USDT0 on Sei Mainnet

Developers can access USDT0 through the following methods:

Use Symphony on Sei Mainnet to swap for USDT0.
Utilize the OFT model for secure omnichain transfers.
Use a LayerZero-enabled bridge app (like Legacy Mesh) to transfer USDT0 from another blockchain to Sei Mainnet.