Crosschain stablecoin USDT0 has been deployed on Optimism's Superchain.USDT0 extends the adoption of Tether's USDt across various blockchains.Superchain's L2 dominance has grown to 51.9% of all transactions on Ethereum layer-2.Stablecoin adoption is heating up, with the total value of stablecoins reaching nearly $228 billion.