Learn how to write your own Blockchain with JavaScript. In this video I’ll show you what is behind a blockchain by using simple code. It’s not a complete implementation, but enough to understand how blockchains work and how they guarantee that blocks can never be changed.

After creating our blockchain we’ll try and tamper with it. This will demonstrate a blockchains ability to detect fraud.

► Source code: https://github.com/Savjee/SavjeeCoin

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1: Creating a blockchain with Javascript (Blockchain, part 1)

2: Implementing Proof-of-Work in Javascript (Blockchain, part 2)

Adding the proof-of-work mechanism to our homemade Javascript blockchain.
Proof-of-work will secure our blockchain against spammers and people trying to tamper with our blocks.

#blockchain #cryptocurrency #bitcoin #javascript