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Crash Course Blockchain: Hands-On Javascript™

Discover the Art of Building Your Own Blockchain that Supports Cryptocurrency and Smart Contracts.
Instructor:
Hardware Academy
3,872 students enrolled
English [Auto]
The Basics of Blockchain Technology and How it Works.
Proof of Work, Hashing and Cryptography.
The Process of Creating a Blockchain from Scratch.
Miner Nodes, Full Nodes and Light Nodes.
How Crytocurrency Work on a Peer-to-Peer Network.
Mempool, Block Reward and Transaction Fees
Smart Contract Deployment and Execution
Runtime Engine and Global State (LevelDB)
Udemy APAC

Welcome to our course on building a peer-to-peer network based on blockchain technology!

 

In this course, we will start by exploring the theory behind how blockchain works. You will learn about the key principles that underlie this innovative technology, including decentralization, consensus, and security. We will also delve into the technical details of how blocks are created and added to a blockchain, and how transactions are validated and processed.

Next, you will have the opportunity to put your knowledge into practice by building a blockchain from scratch in Javascript. This hands-on activity will give you a deep understanding of how a blockchain functions at a technical level.

Following this, you will learn about peer-to-peer networks and how they are used to facilitate communication and data transfer in decentralized systems. You will also have the chance to build a simple peer-to-peer network as a way of reinforcing your understanding of this important concept.

Then, you will learn how to implement a blockchain application on a peer-to-peer network, where multiple nodes are connected and can perform transactions with one another. This will give you the opportunity to apply your knowledge of blockchain technology and peer-to-peer networks to a real-world scenario.

Our ultimate goal is to make our blockchain support smart contracts. This means that nodes in the network will be able to deploy and execute smart contracts. These contracts will be written in a unique programming language, similar to how Ethereum uses Solidity, and we will have a customized runtime engine for executing these contracts, akin to Ethereum’s Ethereum Virtual Machine (EVM).

 

Outline of the course content:

 

  1. Introduction to blockchain theory, covering decentralization, consensus, and security.
  2. Technical details on how blocks are created and added to a blockchain, and how transactions are validated and processed.
  3. Hands-on activity building a blockchain from scratch in JavaScript.
  4. Understanding of peer-to-peer networks and how they are used to facilitate communication and data transfer in decentralized systems.
  5. Building a simple peer-to-peer network.
  6. Implementing a blockchain application on a peer-to-peer network, with multiple nodes connected and able to perform transactions with one another.
  7. Introduction to smart contracts, with the goal of making our blockchain support them.
  8. Developing smart contracts using a unique programming language.
  9. Customized runtime engine for executing smart contracts, similar to Ethereum’s Ethereum Virtual Machine (EVM).

 

Overall, this course will provide you with a solid foundation in blockchain technology and give you the skills and knowledge you need to build and implement your own blockchain applications.

Blockchain Fundamentals

1
Bitcoin Explained in 10 Minutes
2
Double Spending Issue
3
Bitcoin - Brief History
4
Public Key Cryptography
5
Blockchain - Hashing
6
Bitcoin - What is a Block
7
Bitcoin - Proof of Work (High Overview)
8
Centralized vs Decentralized Systems
9
Bitcoin - Mining Process
10
Bitcoin - Chaining Blocks
11
Proof of Work (Nonce Value)
12
Resolving Conflicts
13
Transaction Pool (Mempool)
14
Bitcoin Mining (Candidate Block)
15
Bitcoin Mining Process (From Start to Finish)
16
Blockchain - Incentives to Miners (Block Reward + Transaction Fee)
17
Full Nodes vs Light Nodes vs Miner Nodes
18
How Bitcoin Wallets Work
19
Hot vs Cold Wallet
20
Quiz !

Programming --------------------------------------------------------

1
How to get started

Part I - Basic Blockchain

1
Let's get started !
2
Creating a Block
3
Debugging
4
Creating a Blockchain
5
Debugging

Part II - Advanced Blockchain

1
Creating a Transaction
2
Creating a Wallet and Signing Transactions
3
Debugging
4
Get Wallet Balance
5
Blockchain Validity
6
Debugging
7
Adding Gas Fees
8
Debugging

Part III - Basic Client-Server Architecture

1
Client-Server vs P2P Architecture
2
Building a Client-Server Architecture using WebSockets
3
Debugging

Part IV - Advanced Peer-to-Peer Architecture

1
Introduction
2
Creating The First Node
3
Creating Two More Nodes
4
Debugging

Part V - Integrate Blockchain into a P2P Architecture

1
Introduction
2
Private Keys
3
Blockchain Modifications
4
Creating a Miner Node
5
Creating Two Full Nodes
6
Debugging
7
Creating a Light Node
8
Debugging

Merkle Tree

1
Block Structure In The Bitcoin Protocol
2
Merkle Tree Introduction
3
Merkle Tree Working Principle
4
What Problem Does a Merkle Tree Solve?

Part VI - Merkle Tree Implementation

1
Code Refactoring
2
Block Header Implementation
3
Debugging
4
Recording Each Transaction
5
Light Node Storing Block Headers
6
Debugging
7
Simplified Payment Verification (SPV)
8
SPV - Implementation Part I
9
SPV - Implementation Part II
10
Debugging

Smart Contract

1
Introduction
2
Smart Contracts
3
Deploying Smart Contracts
4
Executing Smart Contracts
5
Global State

Part VII - Smart Contract Implementation

1
Deploying a Smart Contract
2
Debugging
3
Executing a Smart Contract
4
Debugging
5
Runtime Engine Implementation - Part I
6
Runtime Engine Implementation - Part II
7
Runtime Engine Implementation - Part III
8
Debugging
9
Creating a global state (LevelDB) - Part I
10
Creating a global state (LevelDB) - Part II
11
Deploying a second Smart Contract
12
Debugging
13
Final Note
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