OpenUSDT

OpenUSDT (oUSDT) is an interoperable, cross-chain USDT token built collaboratively by Velodrome, Chainlink, Hyperlane, Celo, and the Superchain ecosystem. It extends Tether's USDT liquidity across a wide range of EVM networks (Base, Optimism, Celo, Unichain, and more) using Hyperlane and Chainlink CCIP for secure cross-chain transferability, with a single canonical token address on all supported chains.

OpenUSDT (oUSDT) is not a vault or lending product that earns yield on its own. It is a stablecoin backed 1-to-1 by native USDT. How it generates yield depends entirely on where you choose to use it in DeFi.

Where yield can come from:

• Swap for oUSDT on Velodrome Finance (Optimism), Aerodrome Finance (Base), or Eco Portal, then provide liquidity in those automated-market-maker (AMM) pools. You earn trading fees and any extra token rewards the protocol pays out.
• If lending markets or other DeFi apps decide to support oUSDT, any yield there is also external — it comes from those apps, not from OpenUSDT itself.

What the protocol does and does not do:

• When you bridge oUSDT between chains using the OpenUSDT dApp, there are no fees. The design keeps cross-chain transfers free and open for any chain to integrate.
• The underlying backing — native USDT locked in audited lockbox contracts on Ethereum and Celo — does not produce any yield for oUSDT holders.

In short: OpenUSDT just provides the stablecoin. Any yield you earn comes from the DeFi pools and markets you put it into, not from the protocol itself.