kdembler / file-notary

File Notary is a blockchain-based upload service letting you verify the authenticity of your files

FileNotary

File Notary is a simple blockchain-based notarization service letting you verify the authenticity of your files.

Overview

File Notary consists of a frontend app for managing your files and a backend that processes these files. Each file is uploaded to Amazon S3 for storage. At the same time, the hash of the file is calculated with SHA-3 and saved in a Smart Contract on Ethereum Blockchain. Upon downloading, the hash is calculated once again and compared with the one saved in the Ethereum. After that verification, you can tell with a certainty that the file wasn't modified after the upload.

Usage

1. Clone the repo

https://github.com/kdembler/file-notary
cd file-notary/

2. Copy .env.example file as .env and provide needed env variables

3. Install contract deployment dependencies

cd contract/
yarn # or npm install

4. Deploy the contract

yarn migrate:kovan # or npm run migrate:kovan

5. Build Docker containers

cd ..
docker build -t file-notary-frontend front
docker build -t file-notary-backend notary

6. Start the docker-compose

docker-compose up

7. After the compose starts, the frontend will be available at localhost:80

License

MIT © Klaudiusz Dembler