Of course. The option is available for paying customers only. If you're on the Starter package, it's an additional $9/month but free for all other plans.
Configure Custom Branding
Are you running ProveSource on behalf of a client? or just want your visitors to see your own brand on the ProveSource notifications? follow the steps below:
Go to the "Settings" section and click the "Branding" tab.
Enable the "Remove ProveSource Branding" option.
Enable the "Set custom 'powered by' branding" option.
Set your own Powered By text and link (it's mandatory!)
Set your own brand color (optional).
Save your changes.