HudsonAlpha Tech Challenge: Blockchains

A proof of concept system for storing private medical documents or genome data, such that the documents are highly available, secure, and patients control who has access. This project was created during the HudsonAlpha Tech Challenge.

This project is based on the Ethereum blockchain. A contract deployed on the Ethereum blockchain stores available documents, each of which is a reference to an encrypted document in Ethereum Swarm. Documents are encrypted/decrypted within the browser.

The entire application can be hosted in a decentralized way, as static web files and encrypted documents are stored in Swarm, and state data is stored in the blockchain.

Instructions

Run Tests

truffle develop
truffle(develop)> test

Deploy to a local environment

The following assume the Truffle test account is being used: candy maple cake sugar pudding cream honey rich smooth crumble sweet treat

Import the test account into Metamask and geth:

echo c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3 > pk.txt
geth account import pk.txt

Launch Truffle's in-memory blockchain:

truffle develop

Deploy contracts to blockchain within the Truffle shell:

truffle(develop)> migrate

Launch local Swarm instance:

swarm --bzzaccount 627306090abaB3A6e1400e9345bC60c78a8BEf57 --ens-api http://localhost:9545

Upload static web files to Swarm:

./upload_static_files.sh

Point Metamask at your local blockchain http://localhost:9545/

The site can now be accessed in swarm. E.g.: http://127.0.0.1:8500/bzz:/198cd7ed96bc0d5237922df783bfd2a033a1f0ee9ac7e6d48dff93564e71870b/index.html