Uploaded November 2016 | Updated September 2026, 3 weeks ago

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This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo.

0:00 Intro
0:15 SHA256 Hash
2:18 Block
5:16 Blockchain
9:20 Distributed Blockchain
12:19 Tokens
14:36 Coinbase Transaction

Part 2 is here: youtu.be/xIDL_akeras

If you are interested in playing with this on your own, it is available online at:

andersbrownworth.com/blockchain

The code that runs this demo is also on GitHub:

github.com/anders94/blockchain-demo

I'm @anders94 on X.