Hi Fernando,
thanks for your reply.
1. my question was purely meant in connection with cookie consent with no user registration/account. If I understand correctly, there is no evidence in the back-end if user accepts or declines cookies – if he is not registered.
2. opt-out – there was same meaning – basically I asked if just the opt-out option concerning cookie consent is enough from the view of GDPR and therefore there is no need to have the evidence in the back-end.
Thanks