Would you be willing to confirm your phone number with Warpcast via SMS (wouldn't be publicly visible):

1. Gave you an algo boost
2. You could see other users verified by Warpcast

If it was the only option, and there was no ZK wrapper etc, then I would likely refuse out of principle.

Is there an open source reference implementation of a zk wrapper?

Working to make payments fast, cheap and private 

All casts are my own.

I do but I would switch to something with no phone number dependency in a heartbeat if (i) I was confident in its security, and (ii) it had enough adoption.

Just out of curiosity, do you use Signal Messenger @vitalik.eth ?

Fwiw, I wouldn’t want to attach my phone number to this account either.