We're pleased to announce that Bitfinex customers can now deposit and withdraw USDT0 on Optimism effective 10:00 AM UTC on 23/04/2025. USDT0 is also available for deposit and withdrawal on Ink (USDT0INK) and Arbitrum One (USDT0ARB) transport layers. 

This new feature follows the deployment of USDT0 onto Optimism, a decentralised, Ethereum-based layer-2 network that enables scalable smart contracts and instant transactions.

The API symbol for USDT0 on the Optimism transport layer is USDT0OPX.

The OP token is also available to trade on Bitfinex against USD and USDt.

More information about USDT0 can be found at https://usdt0.to/ and on our Blog.

Please note that USDT0 is not directly issued or redeemable by Tether.