What shortlink verification cannot prove
Token, ownership, dwell and caps are the honest limit. None of them prove the provider's page was ever seen — the daily cap is what bounds the loss.
Tagged “limits”
3 entries
A cookieless visitor key you can count on
One rotating hash that identifies a visitor for limits and counting, without a cookie to clear and without storing anything that identifies a person.
Cap what one visitor can earn you in a day
Pay each creative at most once per visitor per day. The ceiling becomes the number of creatives in rotation, which is a number you control.