IPFS file upload (D)app

Uploads file to IPFS and stores corresponding hash on Ethereum without requiring user to spend gas.

Architecture

Getting started

Development

1. Start local blockchain network: ganache-cli --deterministic
2. Create contract instance: oz create
3. Don't forget to initialize GSNRecipient contract: oz send-tx, initalize()
4. Run front ent locally: npm run start
5. Access at http://localhost:3000/

Resources

Based on this tutorial with the following improvements/changes:

• Add tests
• Use Gas Station Network to turn dapp into app
• Use Rimble UI for front end styling

Tech stack

• Openzeppelin GSN Starter Kit
• React
• Rimble UI
• Infura: Ethereum|IPFS API & Gateway
• web3.js: Ethereum JavaScript API
• Ganache: Personal blockchain for Ethereum development