The text discusses how to use the PubNub Data Stream Network with Google Dart to subscribe to a bitcoin feed, recommending the use of the standard 'dart:js' library interop for this purpose. While it discourages using a non-library method, it suggests starting with the HTTP REST Push API documentation if one chooses to proceed that way. To access PubNub services, users must sign up for an account to obtain unique keys through the PubNub Developer Portal. The process involves setting up an HTML file with specific script tags and including a PubNub <div> with the bitcoinSubscribe Key parameter. The Dart app code then opens a TCP socket to the live stream, utilizing example channel IDs to receive signals like Trade, Depth, and Ticker. The document serves as a guide for implementing real-time price and trade event streaming solutions, with an invitation to explore PubNub's Bitcoin Solution Kit for building bitcoin exchanges or streaming apps.