blockchain_wine_supply_chain

A Repository for the project of my Thesis, which is a blockchain based application to prevent wine counterfeiting using smart contracts

Technologies used

Blockchain

• Solidity for smart contract development
• Hardhat for dAPP development
• ChaiJS for unit testing

Frontend

• Ethereum Wallet --> Metamask
• Performant Node Package Manager - PNPM
• SvelteKit - Typescript
• Blockchain libraries
  • Ethers-svelte
  • Ethers.js
• Shadcn-svelte - Tailwinds

How to run locally

Tools needed

Frontend:

• Node.js --> npm/pnpm
• Metamask Browser extension

Backend

• Yarn package manager

Blockchain

1. Install dependencies
   yarn install

2. Simulate local blockchain using the hardhat network
   yarn hardhat node

3. Compile smart contracts
   yarn hardhat compile

4. Deploy compiled smart contract to local hardhat blockchain
   yarn hardhat run scripts/deploy.js --network localhost

Metamask

1. Install Metamask browser extension, register an account

2. Add hardhat network as custom network

   • Network name: Hardhat
   • RPC URL: http://127.0.0.1:8545
   • Chain ID: 31337
   • Currency symbol: HardhatETH

3. Import a Metamask account using a private key from hardhat node
   Add account or hardware wallet --> Import Account --> Enter private key

4. Change the network to Hardhat, change to the added account

Notes

Every time you restart the local blockchain, you need to clear "cache" in metamask
Settings --> Advanced --> Clear activity tab data

Frontend

1. Install dependencies
   pnpm install or npm install

2. Run local development server
   pnpm run dev

Open http://localhost:5173/ and use the application