# Omnichain token (USDT0)

Working definition: a token moving across blockchains with one supply; USDT0 locks USDT on Ethereum and mints 1:1 elsewhere.

Canonical: https://achivx.org/glossary/omnichain-token/
Updated: 2026-11-01

An omnichain token (working definition) is a token built to move across many blockchains while keeping one supply. USDT0 uses the Omnichain Fungible Token (OFT) standard, which moves tokens over LayerZero's messaging protocol with a unified supply across all chains. USDT is locked in an OFT Adapter contract on Ethereum, the same amount of USDT0 is minted on the destination chain with strict 1:1 backing, and redeeming burns USDT0 on any chain and unlocks the original asset on Ethereum.

## What the sources say

| Source | Quote | Link |
|---|---|---|
| USDT0 docs: OFT and unified supply | "The OFT standard allows tokens to move seamlessly across multiple blockchains using LayerZero's messaging protocol, ensuring a unified supply across all chains." | [docs.usdt0.to](https://docs.usdt0.to/technical-documentation/developer) |
| USDT0 docs: lock-and-mint | "The USDT0 Network operates on a robust lock-and-mint mechanism powered by the Omnichain Fungible Token (OFT) standard." | [docs.usdt0.to](https://docs.usdt0.to/) |
| USDT0 docs: locking | "Locking Assets: The original asset (USDT, XAUT or USAT) is locked in the OFT Adapter smart contract on Ethereum Mainnet." | [docs.usdt0.to](https://docs.usdt0.to/) |
| USDT0 docs: minting 1:1 | "Minting on Destination Chains: Equivalent tokens (USDT0, XAUT0 or USAT) are minted on the target chain, maintaining a strict 1:1 backing with the locked assets on Ethereum." | [docs.usdt0.to](https://docs.usdt0.to/) |
| USDT0 docs: redemption | "Redemption: Tokens can be redeemed by burning them on any chain and unlocking the corresponding original assets on the Ethereum OFT Adapter." | [docs.usdt0.to](https://docs.usdt0.to/) |

## Related terms

- [Bridged stablecoin (USDC.e)](/glossary/bridged-stablecoin/)
- [Legacy Mesh](/glossary/legacy-mesh/)
- [Bridge / bridge crossing](/glossary/bridge/)
- [Mint](/glossary/mint/)
- [Burn](/glossary/burn/)

## See also

- Explainer: [Who issues USDT0, and how is it backed?](https://achivx.com/academy/issuers/what-is-usdt0.html)
- Review: [revain.org/coins/usdt0/](https://revain.org/coins/usdt0/)
- Review: [revain.org/projects/layerzero/](https://revain.org/projects/layerzero/)

Checked against the sources on 2026-11-01.

## revain.org
- https://revain.org/coins/usdt0/
- https://revain.org/projects/layerzero/

## Sources
- https://docs.usdt0.to/technical-documentation/developer
- https://docs.usdt0.to/