LUCE Technical Prototype

The paper is available online: https://arxiv.org/abs/2202.11646

The technical prototype of LUCE is accessible via LuceVM.

LuceVM is a self-contained virtual machine to facilitate web3 development. It encapsulates a Python-Django-Ethereum development stack and allows us to compile, deploy and interact with Ethereum Smart Contracts in a seamless manner. It was created primarily to facilitate the development of the LUCE technical prototype but can be used to support other blockchain-focused research as well.

This repository explains how to set-up LuceVM to access the LUCE Prototype.

Online demo

Try the webhosted version:

• LUCE Web UI: https://luce.137.120.31.102.nip.io
• LUCE blockchain access: https://ganache.luce.137.120.31.102.nip.io

Run with docker

Build

bash docker build -t vjaiman/luce .

Run

bash docker run -it -p 8000:8000 -p 8888:8888 vjaiman/luce

Run with docker-compose, the ganache DB and postgres DB will be stored in a data folder in the same directory as the docker-compose.yml file. You will need also to uncomment the ports in the docker-compose.yml

bash docker-compose up -d

You can easily change the path to the storage folder by copying .env.sample to .env and change the storage path variable.

Access on http://localhost:8000 and connect with one of the demo account:

• provider@luce.com   | provider
• requester@luce.com | requester

🧑‍💻 Development setup

The final section of the README is for if you want to run the package in development, and get involved by making a code contribution.

📥️ Clone

Clone the repository:

bash git clone https://github.com/vemonet/luce cd luce

🐣 Install dependencies

Install Hatch, this will automatically handle virtual environments and make sure all dependencies are installed when you run a script in the project:

bash pip install --upgrade hatch

Install the dependencies in a local virtual environment:

bash hatch -v env create

☑️ Run tests

Make sure the existing tests still work by running pytest. Note that any pull requests to the fairworkflows repository on github will automatically trigger running of the test suite;

bash hatch run test

To display all print():

bash hatch run test -s

🧹 Code formatting

The code will be automatically formatted when you commit your changes using pre-commit. But you can also run the script to format the code yourself:

hatch run fmt

Check the code for errors, and if it is in accordance with the PEP8 style guide, by running flake8 and mypy:

hatch run check

♻️ Reset the environment

In case you are facing issues with dependencies not updating properly you can easily reset the virtual environment with:

bash hatch env prune

Difference with DecentralizedHealthcareBackend

LUCE uses their own python scripts in utils/web3_scripts.py with web3 and solc to compile and publish 1 utils/data/luce.sol smart contract

DHB uses brownie to compile and publish many different smart contracts (luce registry, dataset, consent, plonk verifier for zkp)