[Substrate Roadmap] High Level Concept: What is a blockchain?

[henchiyb]

Description

• Add the blog post: What is a blockchain

Related Issue

https://github.com/lowlevelers/lowlevelers.com/issues/41

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[chungquantin]

This article needs to expand more in detail. We already have many articles about blockchain definitions out there. As we focus on low-level development and deep technical concepts, we must make a few assumptions about the audience instead of covering basic concepts.

You could learn from this resource: https://polkadot-blockchain-academy.github.io/pba-book/blockchain-contracts/index.html

Here is my suggestion:

• Explain more about how consensus works (would be best if you have a code explanation for this)
• Mention a bit about data structures used in the blockchain: Merkle Tree, Patricia Tree, Validator Queue...
• Provide a simple code breakdown of a common blockchain, you can use Substrate code for this as well.

[henchiyb]

@chungquantin Thanks for cmt! Agree with you we need more detail and dig deeper to some important concepts. I feel put it in 1 post is too long, so this PR is the very first start to introduce the concepts. I'm going to create some detail posts for:

• Cryptography
• Consensus algorithm Anyway following the PBA book is also a good idea. Let's me think about it

[chungquantin]

@henchiyb Could you please help to resolve my feedback so I can merge this PR?

[chungquantin]

@henchiyb all other articles are good but could you please help me to resolve feedback for this first article before I merge others?

[henchiyb]

@chungquantin Hey I just updated the example for blockchain. Please review it 🙆‍♂️

[chungquantin]

Perfect! This looks really good. Thank you.