eth-face-chain

A naive implementation of facial recognition on the Ethereum blockchain.

The eth-face-chain is built by deploying ndarrays, twitter handles, and litecoin public addresses onto a blockchain. This chain lives inside of the Ethereum blockchain, and is held together by the prev_address field in each block. There is one block that must be deployed in order to enable iteration over the eth-face-chain. Master contract holds the latest Face contract address deployed to the eth-face-chain in latest_addr.

⚠️ This is just a POC. Do not make deployments to mainnet. ⚠️

Pre-Requisites

• Node.js
• Python3

1. npm install
2. pip3 install face_recognition
3. npm install -g ethereumjs-testrpc

Interacting with the chain

Initialize Master

node ./deployMaster.js

This will deploy the Master contract, and print the contract address to your terminal. Copy it, and paste it into config.json master_addr field. This step is necessary to enable proper search functionality. Without Master, no chain can be built. This is where a concencus protocol would typically come in.

Add a Face

node ./addFace.js ~/Path/To/Image.jpg @TwitterHandle *0xyourpublicaddress*

This will add your face to the blockchain (Or any other faces you want to add.)

Find a Face

node ./findFace.js ~/Path/To/Image.jpg

This will find the address of a given face on the chain. From there, you can pull contact information.

Retrieve info

node ./getLTCAddressAtAddress.js *0xaddresstoquery* gets the LTC address stored at a given address.

node ./getHandleAtAddress.js *0xaddresstoquery* gets the Twitter handle at a given address.

node ./getEncodingAtAddress.js *0xaddresstoquery* gets the encoding stored at a given address. This can be compared to images on the client's machine using the facial_recognition library.