With the initiation of ATT and the rest of the privacy measures, paid marketing at scale has turned from being a deterministic job to a probabalistic one.

This hurts every company that relies on mobile for new user acquisition. It also effects retargeting existing users in mobile channels.

Blockchain somehow could help. It is the only open financial database noone has control of where every transaction is reflected and read by everyone. The identities are by default anonymous - just like Apple's ATT tries to ensure.

The promising thing is targeting consumers based on their transactional and interactional data with other products or contracts.

Yet, delivery is still missing as long as FB and Google have a duopoly here. How do we solve this?