A very simple blockchain implementation to demonstrate the basics of blockchains. This is by no means a complete implementation and it is by no means secure!

In the src/ directory you'll find two versions. Each correspond to a video on YouTube:

• v1: First implementation (video)
• v2: Added proof-of-work mechanism (video)
• v3: Added multiple transactions & mining rewards (video)

Part 1 (click to watch):

Part 2 (click to watch):

Part 3 (click to watch):