Theme is based on theme BlankSlate. Current status is WIP (Work In Progress). Theme comes with configured Webpack for easy development.
The BlankSlate Web Vitals theme package and all files contained within are distributed under the terms of the GNU GPL v3 or Later (https://www.gnu.org/licenses/gpl.html).
Once you've significantly changed the theme to build your own unique project, either for yourself or for a client under a different theme name (as is encouraged), you're entirely welcome to copyright and license that project as you see fit.