Base announced that Cobalt upgrades would go online in September, with three major UX improvements

On 21 July, Base sent a communication indicating that Cobalt would be launched in September, focusing on Sponsorship, Batch Calls and Session Keys. Of these, Sponsorship allows the application of user-sponsored transaction costs to achieve free Gas; Batch Calls supports the packaging of multiple transactions as a package, reducing the number of operational steps; and Session Keys allows user authorization to be used to sign transactions on behalf of a given range, reducing duplication。