Circle announced on Twitter that native USDC has been launched on the Arbitrum ecosystem, and developers and users can access it without bridging. Circle Account and Circle API enable enterprises to access Arbitrum USDC and take advantage of the faster settlement times and lower costs provided by the Arbitrum network.
In the case of Arbitrum, there is also USDC.e, which is bridged from Ethereum, and Arbitrum will work with ecosystem applications to provide a smooth transition of liquidity from bridged USDC to native USDC over time.