POCO Dapp

POCO is a public blockchain app to transparently store product attributes information in order to facilitate authentication, compliance check and traceability of physical products.

Since the app uses a public blockchain and filesystem - Polygon and IPFS, all product information and documents submitted will always be available without restriction.

Stack

• Polygon
• Hardhat
• The Graph Protocol
• IPFS
• NextJS
• EthersJS
• RainbowKit
• wagmi

Local Setup

Deploy contracts to localhost network

# Instal Dependencies
yarn install

# Set up environment variables
cp .env.example .env

# Run localhost chain
yarn hardhat node

# Compile and deploy contracts and generate the abi for frontend
yarn hardhat deploy --network localhost

Run frontend

# Change directory
cd frontend

# Install dependencies
yarn install

# Set up environment variables
cp env/.env.example env/.env.local

# Start frontend
yarn dev

Setup local Graph and IPFS nodes

# Clone the graph-node
git clone git@github.com:graphprotocol/graph-node.git

# Run the dockerized Graph and IPFS nodes
cd docker && docker-compose up -d

Note: To setup the CORS headers for local IPFS node, follow this solution

# Update IPFS config
docker-compose exec ipfs ipfs config --json API.HTTPHeaders.Access-Control-Allow-Origin '["*"]'

# Restart IPFS node
docker-compose restart ipfs

Deployments

Contract Addresses

• Polygon Testnet (Mumbai) - 0xA29111ef1bb594f6f12e4C2b570574bEb6f39F1d
  • Get test tokens at Polygon Facuet

Web Interface

• https://poco-dapp.on.fleek.co/
• IPFS/IPNS - https://poco--dapp-on-fleek-co.ipns.dweb.link/

To-dos

• Look for a simple wallet app for organizations to allow them to easily use this dapp. Ideally, the wallet app should be open-source and non-custodial and have some of the requisite enterprise-level features such as mult-user accounts, audit logs and access control.

Appreciate any feedback to improve and further develop this dapp - Twitter / Discussions