$G-USDT is the wrapped token of $USDT on Evmos bridged by Gravity Bridge.
Gravity Bridge is a purpose-built, fully decentralized, trustless blockchain which bridges assets between the Ethereum and Cosmos ecosystems. Ethereum and EVM compatible tokens can be transferred across the Gravity Bridge to a Cosmos wallet and then onto other Cosmos wallets or DEXs (such as Osmosis or Gravity DEX). Cosmos SDK based blockchains can similarly send tokens across Gravity Bridge to the Ethereum ecosystem, making them available for transfer or potentially trading on Uniswap or other ETH DEXs.