The problem zkDoc solves

By making every visit to the Doc an NFT, we can establish clear ownership.
Patient Medical History is currently neither Transparent and Accessible nor Secure.
We don't even need a wallet address to make an account, just your phone number.

We'll handle the rest!
All Content Identifiers of All files are obviously encrypted!

Only Doctors you authorize will have access.
Your entire patient history, is accessible to you, whenever you log in.

Challenges we ran into

Login without the use of any web3 credentials. Got over this by using Twilio in conjunction with a custom key pair generation. A more secure OTP verification!
Encryption of any kind of file and storage to IPFS without any kind of failure. Solved it by encrypting the CID itself instead, for now at least ;)
Generation of detailed patient data, that can be shared but not public. Solved using ERC 721 tokens for every doctor visit.