I've been making some educational videos on how bitcoin works.

My aim is to explain how bitcoin works in a way that is easy to understand. So if you're looking for a guide to how bitcoin actually works under the hood (without getting lost along the way), these videos may help you to get going.

Here are the videos I've made so far:

1. Mining

This video covers what mining is, why it exists, and how it works. It's a good starting point for understanding why Bitcoin is an interesting technology. Includes a Mining Simulator, so you can see what an actual Miner is doing.

• 00:49 - What is Mining?
• 08:39 - Hash Function
• 13:55 - Mining Basics
•  ↳ 23:03 - Target
•  ↳ 28:08 - Mining Simulator
• 33:20 - Mining Technical
• 54:46 - Live Coding Example

2. Transactions

How transactions work, and how to construct your own transactions.

• 01:27 - Transaction Basics
•  ↳ 08:45 - Change
•  ↳ 12:49 - Graph
•  ↳ 15:10 - Coinbase Transaction
•  ↳ 17:24 - Fees
• 20:00 - Transaction Data
•  ↳ 35:22 - Signing
•  ↳ 48:20 - Summary
• 54:20 - Live Example
•  ↳ 1:02:45 - Code

3. Keys & Addresses

An explanation of Private Keys, Public Keys, and Addresses. Shows you where they come from, how they work, and how to generate your own.

• 00:18 - Outline
• 02:03 - Introduction (Catch-up)
• 07:10 - Where do keys come from?
• 08:28 - Basic Key Generation

• 10:42 - Private Key
• 15:37 - Public Key
•  ↳ 22:05 - Digital Signatures
•    ↳ 26:41 - Signing
•    ↳ 31:54 - Verifying
•    ↳ 36:30 - Summary
• 39:02 - Address
•  ↳ 39:37 - Extra Security (Hash160)
•  ↳ 43:20 - Locking Mechanism
•  ↳ 48:54 - Address

• 56:48 - Technical Walkthrough
•  ↳ 1:09:35 - Code
•  ↳ 1:11:03 - Example
•  ↳ 1:12:41 - Useful Links

4. Script

An explanation of how Script works, which is basically the mini-programming language used to create the locking mechanism for bitcoins.

• 00:38 - Introduction (Catch-up)
• 06:38 - Basics
•  ↳ 13:52 - Running
•    ↳ 18:02 - Pay To Pubkey (P2PK)
•    ↳ 19:41 - Pay To Pubkey Hash (P2PKH)
•    ↳ 26:45 - Pay To Multisig (P2MS)
•    ↳ 34:32 - Pay To Script Hash (P2SH)
•    ↳ 42:21 - Null Data
• 45:31 - Non-Standard Scripts
• 53:37 - Technical Details / Decoding Transaction Data
• 58:08 - Summary
• 1:01:33 - Code, Examples, References

I've got a few more videos planned, and I'll update this post when they're ready. Until then, I've also written a bunch of articles on my website that you may find useful: http://learnmeabitcoin.com