LayerZero posted on the X platform that USDtb has been launched on Ethereum, Arbitrum, Solana, and Base, powered by LayerZero. Previously, Ethena Labs announced the launch of USDtb, a new stablecoin product backed by BlackRock BUIDL. USDtb shares the same characteristics as existing fiat stablecoins such as USDC or USDT, and is backed 1:1 using cash or cash equivalents reserves.