A blockchain-based To-Do SPA based on the truffle suite to experiment with Ethereum smart contracts

Software requirements

• Ganache - application to run a ethereum network on the localhost
• MetaMask - browser extension to communicate with ethereum networks

Installation and start

• Start Ganache with the default settings
• Start the browser with the activated MetaMask extension and select "Custom RPC" in the networks dropdown. Add Ganache's RPC Server to the "New RPC URL" field. Save and confirm
• Import any account from ganache in MetaMask using the private key
• Align truffle.js with Ganache's RPC Server settings
• Install the package and open the SPA interface under http://localhost:1234 when the installation is done

npm install

How does it work?

• Ganache is a ethereum Implementation designed for developers that runs locally on your machine
• The application copiles the smart contracts to ethereum virtual machine bytecode and deploys it to Ganache's test network (contract calls under "transactions")
• Truffle translates the smart contracts to javascript accessible methods that are called by the web application
• Metamask provides the SPA with web3.js - a javascript interface to communicate to Ganache's Ethereum RPC endpoint that is used by truffle to pass the method calls to the ethereum network