I saw someone else post about this and I placed this comment. I'll leave the comment here too since it applies. Sovrin is a global public utility for identity:

Have you seen what Sovrin has already done? They offer a live network, already in existence, decentralized (truly), public, permissioned ledger with zero knowledge proof capability, along with the fact that NONE of your personally identifiable information is ever on the ledger, not even in a hashed form.

You're in control of your data and your privacy.

Whitepapers: https://sovrin.org/library/
Steward List (IMPRESSIVE:): https://sovrin.org/stewards/

There's an established open source community. They are working with some pretty big players. It's worth looking into. Oh yeah and it's all free. You're welcome!