Will the changes in panelist portal include some verification process either at the stage of registration or at the stage of payout?

"Recaptcha" is updated to the new "Invisible Recaptcha" (both for login and registration). 

Geo-IP requirements, along with blocking of VPNs and Unknown Proxies is also in place. The usual verification step of opting in against an email address is also present.

A verification link is also being sent out to the panelist upon registration as part of the welcome email, followed by a reminder being sent out after 7 days. The panelist has in total 2 weeks to verify their accounts.