Identity

    Retis, ergo sum. (I network, therefore I am)


The phone app uses your cryptographic key pair to sign and publish statements to express:
I vouch for for this person's humanity and identity
He goes by "Tom" and uses this cryptographic key

Any service can read and authenticate these statements, aggregate them, and compute your trusted identity network - who posses what public key, and what do they go by.

So:

("First Amendment 2.0", when I'm feeling melodramatic ;)