This post introduces Web3.js and explains how it can be used to pull real-time Ethereum transactions from the blockchain. It covers setting up a basic Node.js project, installing Web3.js, connecting to an RPC node, listening for new blocks using web3.js, and making a getBlock() call to retrieve data on the latest transactions. The post also highlights the importance of nodes in the cryptocurrency and blockchain world and how they interact with each other to validate transactions and store data about the current state of the blockchain. Finally, it mentions DataStax Astra DB as a true peer-to-peer, 24/7 database for finance and cryptocurrency needs, offering full visibility of Ethereum transactions data across all users.