How Does the Bitcoin Blockchain Work? | Ep. 25 — Sat Chats Short Stacks

<p>In this Sat Chats Short Stack, Chris and Stewart break down one of the most confusing parts of Bitcoin: the blockchain.</p> <p>This is your crash course in the foundation of Bitcoin, built for beginners but juicy enough for veterans.</p> <p>They compare it to a spreadsheet with tabs — each tab is a block of Bitcoin transactions, locked in and time-stamped. Each new tab connects to the one before it, creating a secure, unbreakable chain.</p> <p>Chapters</p> <p>00:00 Intro: What the heck is a blockchain?</p> <p>01:05 What is a block? (Spreadsheet tab analogy)</p> <p>03:02 What goes inside a block (transactions, timestamps, nonce)</p> <p>04:45 How blocks get “chained” together</p> <p>06:33 Why you can’t go back and change past blocks</p> <p>08:01 Sat Chats analogy: Faking a past episode</p> <p>09:15 Why chaining blocks makes Bitcoin secure</p> <p>10:32 What decentralization really means (21,000+ nodes)</p> <p>12:03 Why it’s not “just a Google Sheet in the sky”</p> <p>13:15 Final thoughts</p> <p>We cover:</p> <p>✅ What is a block and what’s inside it</p> <p>✅ How blocks get “chained” together</p> <p>✅ Why tampering with Bitcoin is basically impossible</p> <p>✅ What decentralization really means (and why it's not Google Sheets)</p> <p>✅ Why you don’t need to trust banks anymore</p> <p>They explain why you can’t rewrite the past, why faking a Sat Chats episode would be just as impossible, and how 21,000+ independent nodes around the world keep the whole system honest — no central server, no spreadsheet in the sky, just unstoppable code.</p>