Connect to the Ethereum Blockchain with Node.js and Vonage

The Ethereum blockchain is used to create a distributed ledger where users can agree upon code execution and data updates. Smart contracts emit events from the blockchain which a user interface can listen for to enable specific actions and write event logs (data) to the blockchain. The Vonage Conversation API provides a host of APIs to enables real-time communication over several channels (voice, text, video). Interactions via these channels can be initiated by creating a Conversation, and users are created to interact in this conversation via membership. A Node.js application is set up with environment variables for easy interaction with the Vonage Conversation API and the Ethereum blockchain through Web3. The application sends a message to the network, creates a Conversation event once the transaction hash becomes available, and listens for Blockchain events such as NewText emitted from the Ethereum Blockchain.