I understand now about copyright.
About the referral system, I meant when we create accounts using HiveOnboard program here : https://signup.hive.io/ There are two accounts who are set as refferers. I tried to create an account and two accounts were set as beneficiaries for each content I create. Like 1% for one and 1% for an others. I don't know the details, I'm just sharing the information.
I meant for POB it will be good if we will have onboarding program that will motivate people to invite more people here.