A web application developer explores the creation of a cryptocurrency exchange using Node.js and Couchbase, diving into cryptocurrency exchanges' functionalities, such as managing Bitcoin transactions and user accounts. The developer, who is not an expert in the financial sector, shares a step-by-step guide on setting up a Node.js application, configuring dependencies, and building a database and Bitcoin logic. This includes generating hierarchical deterministic (HD) wallets, creating transactions, and setting up RESTful API endpoints using the Express framework. Despite the comprehensive walkthrough, the author acknowledges potential security concerns, such as the need for encrypting sensitive data and the limitations of using Couchbase for financial applications due to its lack of strong durability and consistency features. The article underlines the importance of testing and securing the application, while inviting feedback and collaboration from the community to improve the approach.