Uniswap vs USDT0

Uniswap V4 rebuilds the protocol as a ‘Singleton’ contract and introduces programmable ‘hooks’ that let pools execute arbitrary logic before and after swaps. The redesign cuts gas costs by 15‑25 % and should open the door for new order types like TWAMMs and on‑chain limit orders. V4 is expected to go live shortly after Ethereum’s Pectra upgrade, when core devs will freeze the code under a Business Source Licence.

USDT0 is the wrapped form of Tether issued by the cross‑chain router LayerZero to enable omnichain fungibility between Ethereum, Arbitrum, Optimism and BSC. The 0‑suffix indicates that redemptions are only possible through the canonical bridge rather than via Tether Treasury. The token carries a 0.1 % mint fee that is burned to offset bridge security costs.