The Mechanics of Blockchain | A Simple Guide

WHITE MIRROR - Episode 3

What is blockchain really doing under the hood? In this video, we break down how transactions are created and verified, what nodes do, and why having many independent nodes makes the system secure—without a central authority calling the shots. Simple, visual, and jargon-free.

You’ll learn:

How a transaction is formed, broadcast, and validated by the network.
What nodes are, and the difference between full nodes and miners/validators.
Why multiple nodes increase security and reduce single points of failure.
How consensus replaces central agency control to keep the ledger honest.
How blocks link together to form an immutable chain.

Chapters:
00:00 Intro
02:34 What is a transaction?
05:30 Broadcasting to the network
06:08 What nodes actually do
07:00 Consensus and security (why many nodes matter)
08:05 Blocks and immutability
14:45 Wallets & Addresses
20:40 Anti Fraud, Anti Inflation
22:22 What Is A Node?
23:08 Wrap-Up

Transactions are verified by many nodes, not one gatekeeper.
Consensus ensures honesty without trusting a central agency.
The chain’s design (hash links) makes past data tamper-evident.

If this helped you finally “get” blockchain, hit like, subscribe, and drop your questions below—what should we cover next?

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