7 hours ago
[center]![[Image: 122afaa1fe6f5e281fb42627548adaf2.png]](https://i127.fastpic.org/big/2026/0309/f2/122afaa1fe6f5e281fb42627548adaf2.png)
Build A Blockchain & Cryptocurrency | Full-Stack Edition
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz
Language: English | Size: 9.73 GB[/center] | Duration: 21h 48m
Full-stack blockchain+cryptocurrency course! A backend + frontend with Node.js, Express, React, & more!
What you'll learn
Build a complete blockchain-powered cryptocurrency from scratch.
Understand and fluently converse on the core software engineering concepts behind blockchain and cryptocurrencies.
Create unique blockchain-centric solutions to real work problems and business applications.
Build proof-of-work based systems.
Create backend Node JS servers, with an express API and full testing suite.
Build server-to-server systems with real-time networking capabilities.
Build frontend web applications, particularly with React JS.
Deploy full-stack projects for wide use by the public.
Employ software best practices and coding conventions to write clean, scalable code.
Requirements
Experience with the command line and the essentials of an operating system.
Knowledge in at least one programming language.
Familiarity with how web development works.
Description
Code the Future: Build a Full Blockchain and Cryptocurrency From Scratch
This course isn't just about learning what blockchain is - it's about building one.
You'll code a complete, production-style blockchain and cryptocurrency system: a Node backend, a React JS frontend, and a real deployment pipeline - all guided by professional engineering principles.
Whether you're an individual developer or part of a company designing a technical learning curriculum, this course offers a proven, hands-on way to teach blockchain fundamentals through real full-stack software development.
Why This Course
The blockchain industry has matured - but developer education often hasn't. Too many tutorials stop at the "theory" stage. This course goes far beyond that.
You'll build every layer yourself
A blockchain with mining, validation, and proof of work.
A cryptocurrency with wallets, signatures, and transaction pools.
A distributed API network using Pub/Sub.
A React JS application that interacts with your blockchain in real time.
A full deployment to a live environment.
And you'll do all of this with clean code, TDD, and professional full-stack structure - the same standards I use in my own work as a software engineer.
What Students Are Saying
"Highly recommendable course for blockchain beginners. You can experience every aspect of blockchain mechanism with hands-on coding projects."
"As a fellow instructor, this course has given me something to live up to. Just incredible. HIGHLY HIGHLY RECOMMEND."
"I am a beginner in programming. But I found David to be a prolific teacher. I cannot believe he is releasing this quality material for such an affordable price. Dude thank you so much! You are the best teacher I've ever had!"
"The instructor has put a lot of effort to explain every operation in very detail. This course is very helpful for me to understand how React works in web browser. Thank you."
"Perfect! This course is a must-have for a junior developer."
Who This Course Is For
Engineering teams and training programs looking to teach blockchain principles through practical, modern JavaScript development.
Developers who want to move beyond tutorials and build a complete, functioning blockchain system.
Intermediate programmers familiar with at least one language who want to learn Node JS, Express, and React in a serious project context.
Software engineers exploring distributed systems and full-stack architecture.
Curious learners who want to deeply understand how cryptocurrencies like Bitcoin actually work-by coding one from scratch.
Why Teams Choose This Course
Engineering teams and corporate training programs choose this course because it delivers a comprehensive, project-based learning experience. It delivers a balance of theory, code, and software best practices. It delivers a final deployed product that can be reviewed and demonstrated. And it delivers a repeatable learning path that works for both solo developers and teams.
It's a single resource that unites backend, frontend, and blockchain principles into one cohesive curriculum.
A Real Learning Journey
Every section is designed to combine deep conceptual understanding with hands-on application
The Blockchain Backend - build blocks, hashing, and validation.
Proof of Work & Mining - implement difficulty control and understand the 51% attack.
Networking - connect peers, sync chains, and handle live updates with Pub/Sub.
Cryptocurrency Features - wallets, signatures, balances, and mining rewards.
Frontend Blockchain - a React-based explorer and dashboard.
Frontend Cryptocurrency - conduct transactions and mine them from your browser.
Deploy to Production - share your project with the world, fully live.
Professional Software Standards
As a practicing full-stack developer, I've brought the same level of care to this project that I do to the code I ship every day. You'll follow modern engineering practices
Test-driven development (TDD) with Jest.
Clean code and folder structure used in production Node JS systems.
Express API design for RESTful services.
Reusable React components built with clarity and purpose.
Deployment best practices used by professional engineers.
Course Outcomes
By the end of this course, you'll have your own blockchain and cryptocurrency live online. You'll understand blockchain theory and engineering fundamentals. You'll be able to explain distributed ledgers, proof of work, and cryptography. You'll write full-stack JavaScript confidently with Node and React. And you will build and deploy complex web applications with professional discipline.
What You'll Build and Learn
You'll start with the backend, building a blockchain step by step
Design and code blocks, chains, and hash functions.
Implement proof of work and difficulty adjustment.
Add consensus, chain validation, and network synchronization.
Extend the system into a cryptocurrency with real wallet addresses and transactions.
Use Pub/Sub to power a peer-to-peer blockchain network].
Then, you'll move to the frontend, where you'll
Build a React JS application and frontend to visualize the blockchain, transactions, and balances.
Create a user-friendly wallet dashboard.
Mine transactions and interact with your network in real time.
Finally, you'll deploy your blockchain so anyone in the world can access and use it.
Why Learn From Me
I'm a full-stack software engineer, and I've released more than 17 courses on software development, taken by over 320,000 students worldwide. My mission is to help developers learn modern technology in a structured, motivating, and professional way.
In this course, I've brought together my background in software engineering and education to give you the kind of hands-on, conceptual, and complete learning experience that's rare in online training.
Your Blockchain Journey Starts Here
By the end of this course, you won't just understand blockchain - you'll have built one. You'll have a deployed cryptocurrency system that demonstrates the concepts powering real-world decentralized technologies.
If you're curating content for your engineering team or investing in your own technical growth, this is a flagship full-stack course built for lasting impact.
Join today, and start building the technology behind tomorrow's software!
Who this course is for
This course is suited for someone who has experience in at least one programming language. This course moves through coding essentials at a quick pace. Your experience in one other language will definitely help.
Perfect for anyone who already knows a bit of JavaScript. This course is 95% JavaScript based, so any JS experience will be extremely useful.
This course is not suited for complete beginners to programming. You will find that the course moves too quickly if you've never coded before. However, a persistent student may be able to learn coding in this course, if that student is willing to be patient with a lot of supplemental reading and research.
Overview
Section 1: Introduction and Getting Started
Lecture 1 Why this course? (Course Promo)
Lecture 2 The Blockchain and Cryptocurrencies - What, Why, and How
Lecture 3 Code the Blockchain in 10 minutes | Lightning Version
Lecture 4[Required] Course Repository, Software Installation, Tips and Tricks
Lecture 5[Optional] Mega JavaScript and Node.js Overview
Section 2: Blocks | The Blockchain Backend
Lecture 6 Section Overview: Blocks | The Blockchain Backend
Lecture 7 Commits for this Section
Lecture 8 Set Up the Blockchain Application
Lecture 9 Create the Block Class
Lecture 10 Create the Block Class | TDD Style
Lecture 11 The Genesis Block | Tests
Lecture 12 The Genesis Block | Code
Lecture 13 Mine Blocks
Lecture 14 Crypto Hash and SHA-256
Lecture 15 Hash in MineBlock
Lecture 16 Recap: Blocks | The Blockchain Backend
Section 3: The Chain | the Blockchain Backend
Lecture 17 Section Overview: The Chain | the Blockchain Backend
Lecture 18 Commits for this Section
Lecture 19 The Blockchain Class
Lecture 20 Chain Validation and Replacement Overview | Free Preview
Lecture 21 Chain Validation | Tests
Lecture 22 Chain Validation | Code
Lecture 23 Chain Replacement
Lecture 24 Stub Console Output in Tests
Lecture 25 Recap: The Chain and Proof of Work | the Blockchain Backend
Section 4: Proof of Work | The Blockchain Backend
Lecture 26 Section Overview: Proof of Work | The Blockchain Backend
Lecture 27 Commits for this Section
Lecture 28 Proof of Work and the 51% Attack
Lecture 29 Difficulty and the Nonce Value | Tests
Lecture 30 Difficulty and the Nonce Value | Code
Lecture 31 Dynamic Difficulty and the Mine Rate
Lecture 32 Adjust the Difficulty in MineBlock
Lecture 33 Improve the Proof of Work System | Average Work Script
Lecture 34 Improve the Proof of Work System | Binary hashes
Lecture 35 Prevent Difficulty Jumps
Lecture 36 Recap: Proof of Work | the Blockchain Backend
Section 5: API and Network | The Blockchain Backend
Lecture 37 Section Overview: API and Network | The Blockchain Backend
Lecture 38 Commits for this Section
Lecture 39 Blockchain API and Network Overview
Lecture 40 Setup Express API
Lecture 41 Post Request to Mine a Block
Lecture 42 Real-Time Messaging Network through Pub/Sub | Overview
Lecture 43 Pub/Sub Options: Redis or PubNub
Lecture 44 Install Redis
Lecture 45 Redis Publisher/Subscriber Class
Lecture 46 Install PubNub
Lecture 47 PubNub: a Non-Redis Pub/Sub Alternative
Lecture 48 Broadcast Chain
Lecture 49 Start Peers and Broadcast Chain on API Mine
Lecture 50 Sync Chain on Connect
Lecture 51 Avoid Redundant Interactions
Lecture 52 Recap: API and Network | the Blockchain Backend
Section 6: Wallets, Keys, and Transactions | The Cryptocurrency Backend
Lecture 53 Section Overview: Wallets, Keys, and Transactions | The Cryptocurrency Backend
Lecture 54 Commits for this Section
Lecture 55 Wallets, Keys, and Transactions Overview
Lecture 56 Code Organization
Lecture 57 Create and Test Wallet Class
Lecture 58 Key Pair and Public Key Addresses
Lecture 59 Sign Data and Verifying Signatures
Lecture 60 Transaction Objects and the OutputMap | Tests
Lecture 61 Transaction Objects and the OutputMap | Code
Lecture 62 Transaction Inputs
Lecture 63 Cohesive Utility
Lecture 64 Validate Transaction
Lecture 65 Wallet Create Transaction
Lecture 66 Update Transactions with Multiple Outputs
Lecture 67 Improve the CryptoHash
Lecture 68 Transaction Update Edge Cases
Lecture 69 Recap: Wallets, Keys, and Transactions | The Cryptocurrency Backend
Section 7: Transaction Pool | The Blockchain and Cryptocurrency Backend
Lecture 70 Section Overview: Transaction Pool | The Blockchain and Cryptocurrency Backend
Lecture 71 Commits for This Section
Lecture 72 Transaction Pool Overview
Lecture 73 Create the Transaction Pool and Set Transactions
Lecture 74 API Transactions and Main Transaction Pool
Lecture 75 Handle Invalid Transactions
Lecture 76 Transaction Updates in the API
Lecture 77 Get Transaction Pool Map
Lecture 78 Broadcast Transaction
Lecture 79 Pubnub Set Transaction Edge Case
Lecture 80 Sync Transaction Pool Map on Connect
Lecture 81 Recap: Transaction Pool | the Blockchain Backend
Section 8: Mine Transactions | The Blockchain and Cryptocurrency Backend
Lecture 82 Section Overview: Mine Transactions | The Blockchain and Cryptocurrency Backend
Lecture 83 Commits for This Section
Lecture 84 Mine Transactions Overview
Lecture 85 Transaction Miner Class
Lecture 86 Grab Valid Transactions
Lecture 87 Reward Transaction
Lecture 88 Clear Blockchain Transactions
Lecture 89 Mine Transactions Endpoint
Lecture 90 Clear Recorded Transactions on Successful Replace
Lecture 91 Blockchain Balance Overview
Lecture 92 Calculate the Wallet Balance
Lecture 93 Calculate the Balance before each Transaction
Lecture 94 Wallet Balance From Recent Transaction
Lecture 95 Wallet-Info Request
Lecture 96 Validate Transaction Blocks Overview
Lecture 97 Valid Transaction Data | Tests
Lecture 98 Valid Transaction Data | Code
Lecture 99 Validate Input Balances
Lecture 100 Prevent Duplicate Transactions in Block
Lecture 101 Validate Transaction Chain
Lecture 102 Recap: Mine Transactions | The Blockchain and Cryptocurrency Backend
Section 9: The Blockchain and Cryptocurrency Backend | Review
Lecture 103 The Blockchain and Cryptocurrency Backend | Review
Section 10: The Frontend Blockchain
Lecture 104 Section Overview: The Frontend Blockchain
Lecture 105 Commits for This Section
Lecture 106 The Frontend Blockchain Overview
Lecture 107 Optional: React.js Overview
Lecture 108 Serve a Frontend Page
Lecture 109 Add JavaScript to the Frontend
Lecture 110 Correct Version of parcel-bundler
Lecture 111 Build React into the Frontend
Lecture 112 Frontend Development Workflow
Lecture 113 App Component
Lecture 114 Fix to Upcoming Lecture: Fetch and Display Wallet-Info
Lecture 115 Fetch and Display Wallet-Info
Lecture 116 Visualize the Blocks
Lecture 117 Seed the Backend with Data
Lecture 118 Fonts link for upcoming lecture: Stylize the Application
Lecture 119 Stylize the Application
Lecture 120 Make a Block Component with Props
Lecture 121 Recap: The Frontend Blockchain
Section 11: The Frontend Cryptocurrency
Lecture 122 Section Overview: The Frontend Cryptocurrency
Lecture 123 Commits for This Section
Lecture 124 The Frontend Cryptocurrency Overview
Lecture 125 Toggle Transaction Displays
Lecture 126 Transaction Component
Lecture 127 React Router
Lecture 128 Conduct Transaction Component
Lecture 129 Post Transaction with Component
Lecture 130 Transaction Pool Component
Lecture 131 Poll the Transaction Pool
Lecture 132 Mine a Block of Transactions through the Frontend
Lecture 133 Recap: The Frontend Cryptocurrency
Section 12: Deploying to Production and Full-Stack Improvements
Lecture 134 Section Overview: Deploying to Production and Full-Stack Improvements
Lecture 135 Commits for This Section
Lecture 136 Ignore Redis, use PubNub
Lecture 137 Prepare for production and Publish to Heroku
Lecture 138 Start Production Peers
Lecture 139 Known Addresses | Backend
Lecture 140 Known Addresses | Frontend
Lecture 141 Blocks Pagination | Backend
Lecture 142 Blocks Pagination | Frontend
Lecture 143 Recap: Deploying to Production and Backend-Included Improvements
Section 13:[Optional reference section] Mega JavaScript Overview
Lecture 144 Optional: Mega JavaScript & Node.js Overview for JS Newcomers | Part 1
Lecture 145 Optional: Mega JavaScript & Node.js Overview for JS Newcomers | Part 2
Section 14:[Optional reference section] In-Depth JavaScript Overview
Lecture 146 Section Overview: Deploying to Production and Full-Stack Improvements
Lecture 147 The Console, Operators, and Variables
Lecture 148 Booleans and Conditionals
Lecture 149 Syntax - Semicolons and Comments
Lecture 150 Undefined and Primitives
Lecture 151 Arrays
Lecture 152 Objects
Lecture 153 Loops and Iteration
Lecture 154 Functions - Declarations vs. Expressions
Lecture 155 Arrow Functions
Lecture 156 Methods and the `this` Keyword
Lecture 157 More on `this` and Function Expressions vs. Arrow functions
Lecture 158 Interview Question | The `this` Keyword
Lecture 159 Callbacks
Lecture 160 Interview Question | Callbacks
Lecture 161 A Dynamic Language and Types
Lecture 162 Almost Everything is an Object
Lecture 163 Equality and Type Coercion
Lecture 164 Truthy and Falsy
Lecture 165 Null vs. Undefined
Lecture 166 Explicit Type Conversion
Lecture 167 Interview Question | JavaScript Types
Lecture 168 Let, Const, and Mutability
Lecture 169 Let, Const, Var, and Scope
Lecture 170 Var and Function Hoisting
Lecture 171 Interview Question | Scope and Hoisting
Lecture 172 Template Literals and Ternary Operators
Lecture 173 The Property Shorthand and Destructuring Assignment
Lecture 174 Object methods
Lecture 175 Spread Syntax
Lecture 176 Object.is, References, and Shallow Clone
Lecture 177 JSON.parse, JSON.stringify, and an Attempt at Deep Cloning
Lecture 178 Custom and Lodash CloneDeep
Lecture 179 Interview Question | Cloning an Object
Lecture 180 Closures
Lecture 181 Function Factories
Lecture 182 Higher Order Functions
Lecture 183 Interview Question | Closures, Higher-Order Functions, and Callbacks
Lecture 184 Object-Oriented Programming
Lecture 185 Constructor functions
Lecture 186 Classes
Lecture 187 Prototypes and the Prototype-Based Inheritance
Lecture 188 Object Prototype, .__proto__, and the prototype chain
Lecture 189 Interview Question | Prototype-Based Inheritance
Lecture 190 Asynchronous Code with SetTimeout
Lecture 191 Fetch and Promise
Lecture 192 Promise from Scratch
Lecture 193 JavaScript Engine and Runtime
Lecture 194 Await and Async
Lecture 195 Interview Question | Asynchronous JavaScript
Section 15: Conclusion
Lecture 196 Congratulations! And Final Remarks
Lecture 197 Challenges List | Article
Lecture 198 Bonus Lecture: More Content!
Build A Blockchain & Cryptocurrency | Full-Stack Edition
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz
Language: English | Size: 9.73 GB[/center] | Duration: 21h 48m
Full-stack blockchain+cryptocurrency course! A backend + frontend with Node.js, Express, React, & more!
What you'll learn
Build a complete blockchain-powered cryptocurrency from scratch.
Understand and fluently converse on the core software engineering concepts behind blockchain and cryptocurrencies.
Create unique blockchain-centric solutions to real work problems and business applications.
Build proof-of-work based systems.
Create backend Node JS servers, with an express API and full testing suite.
Build server-to-server systems with real-time networking capabilities.
Build frontend web applications, particularly with React JS.
Deploy full-stack projects for wide use by the public.
Employ software best practices and coding conventions to write clean, scalable code.
Requirements
Experience with the command line and the essentials of an operating system.
Knowledge in at least one programming language.
Familiarity with how web development works.
Description
Code the Future: Build a Full Blockchain and Cryptocurrency From Scratch
This course isn't just about learning what blockchain is - it's about building one.
You'll code a complete, production-style blockchain and cryptocurrency system: a Node backend, a React JS frontend, and a real deployment pipeline - all guided by professional engineering principles.
Whether you're an individual developer or part of a company designing a technical learning curriculum, this course offers a proven, hands-on way to teach blockchain fundamentals through real full-stack software development.
Why This Course
The blockchain industry has matured - but developer education often hasn't. Too many tutorials stop at the "theory" stage. This course goes far beyond that.
You'll build every layer yourself
A blockchain with mining, validation, and proof of work.
A cryptocurrency with wallets, signatures, and transaction pools.
A distributed API network using Pub/Sub.
A React JS application that interacts with your blockchain in real time.
A full deployment to a live environment.
And you'll do all of this with clean code, TDD, and professional full-stack structure - the same standards I use in my own work as a software engineer.
What Students Are Saying
"Highly recommendable course for blockchain beginners. You can experience every aspect of blockchain mechanism with hands-on coding projects."
"As a fellow instructor, this course has given me something to live up to. Just incredible. HIGHLY HIGHLY RECOMMEND."
"I am a beginner in programming. But I found David to be a prolific teacher. I cannot believe he is releasing this quality material for such an affordable price. Dude thank you so much! You are the best teacher I've ever had!"
"The instructor has put a lot of effort to explain every operation in very detail. This course is very helpful for me to understand how React works in web browser. Thank you."
"Perfect! This course is a must-have for a junior developer."
Who This Course Is For
Engineering teams and training programs looking to teach blockchain principles through practical, modern JavaScript development.
Developers who want to move beyond tutorials and build a complete, functioning blockchain system.
Intermediate programmers familiar with at least one language who want to learn Node JS, Express, and React in a serious project context.
Software engineers exploring distributed systems and full-stack architecture.
Curious learners who want to deeply understand how cryptocurrencies like Bitcoin actually work-by coding one from scratch.
Why Teams Choose This Course
Engineering teams and corporate training programs choose this course because it delivers a comprehensive, project-based learning experience. It delivers a balance of theory, code, and software best practices. It delivers a final deployed product that can be reviewed and demonstrated. And it delivers a repeatable learning path that works for both solo developers and teams.
It's a single resource that unites backend, frontend, and blockchain principles into one cohesive curriculum.
A Real Learning Journey
Every section is designed to combine deep conceptual understanding with hands-on application
The Blockchain Backend - build blocks, hashing, and validation.
Proof of Work & Mining - implement difficulty control and understand the 51% attack.
Networking - connect peers, sync chains, and handle live updates with Pub/Sub.
Cryptocurrency Features - wallets, signatures, balances, and mining rewards.
Frontend Blockchain - a React-based explorer and dashboard.
Frontend Cryptocurrency - conduct transactions and mine them from your browser.
Deploy to Production - share your project with the world, fully live.
Professional Software Standards
As a practicing full-stack developer, I've brought the same level of care to this project that I do to the code I ship every day. You'll follow modern engineering practices
Test-driven development (TDD) with Jest.
Clean code and folder structure used in production Node JS systems.
Express API design for RESTful services.
Reusable React components built with clarity and purpose.
Deployment best practices used by professional engineers.
Course Outcomes
By the end of this course, you'll have your own blockchain and cryptocurrency live online. You'll understand blockchain theory and engineering fundamentals. You'll be able to explain distributed ledgers, proof of work, and cryptography. You'll write full-stack JavaScript confidently with Node and React. And you will build and deploy complex web applications with professional discipline.
What You'll Build and Learn
You'll start with the backend, building a blockchain step by step
Design and code blocks, chains, and hash functions.
Implement proof of work and difficulty adjustment.
Add consensus, chain validation, and network synchronization.
Extend the system into a cryptocurrency with real wallet addresses and transactions.
Use Pub/Sub to power a peer-to-peer blockchain network].
Then, you'll move to the frontend, where you'll
Build a React JS application and frontend to visualize the blockchain, transactions, and balances.
Create a user-friendly wallet dashboard.
Mine transactions and interact with your network in real time.
Finally, you'll deploy your blockchain so anyone in the world can access and use it.
Why Learn From Me
I'm a full-stack software engineer, and I've released more than 17 courses on software development, taken by over 320,000 students worldwide. My mission is to help developers learn modern technology in a structured, motivating, and professional way.
In this course, I've brought together my background in software engineering and education to give you the kind of hands-on, conceptual, and complete learning experience that's rare in online training.
Your Blockchain Journey Starts Here
By the end of this course, you won't just understand blockchain - you'll have built one. You'll have a deployed cryptocurrency system that demonstrates the concepts powering real-world decentralized technologies.
If you're curating content for your engineering team or investing in your own technical growth, this is a flagship full-stack course built for lasting impact.
Join today, and start building the technology behind tomorrow's software!
Who this course is for
This course is suited for someone who has experience in at least one programming language. This course moves through coding essentials at a quick pace. Your experience in one other language will definitely help.
Perfect for anyone who already knows a bit of JavaScript. This course is 95% JavaScript based, so any JS experience will be extremely useful.
This course is not suited for complete beginners to programming. You will find that the course moves too quickly if you've never coded before. However, a persistent student may be able to learn coding in this course, if that student is willing to be patient with a lot of supplemental reading and research.
Overview
Section 1: Introduction and Getting Started
Lecture 1 Why this course? (Course Promo)
Lecture 2 The Blockchain and Cryptocurrencies - What, Why, and How
Lecture 3 Code the Blockchain in 10 minutes | Lightning Version
Lecture 4[Required] Course Repository, Software Installation, Tips and Tricks
Lecture 5[Optional] Mega JavaScript and Node.js Overview
Section 2: Blocks | The Blockchain Backend
Lecture 6 Section Overview: Blocks | The Blockchain Backend
Lecture 7 Commits for this Section
Lecture 8 Set Up the Blockchain Application
Lecture 9 Create the Block Class
Lecture 10 Create the Block Class | TDD Style
Lecture 11 The Genesis Block | Tests
Lecture 12 The Genesis Block | Code
Lecture 13 Mine Blocks
Lecture 14 Crypto Hash and SHA-256
Lecture 15 Hash in MineBlock
Lecture 16 Recap: Blocks | The Blockchain Backend
Section 3: The Chain | the Blockchain Backend
Lecture 17 Section Overview: The Chain | the Blockchain Backend
Lecture 18 Commits for this Section
Lecture 19 The Blockchain Class
Lecture 20 Chain Validation and Replacement Overview | Free Preview
Lecture 21 Chain Validation | Tests
Lecture 22 Chain Validation | Code
Lecture 23 Chain Replacement
Lecture 24 Stub Console Output in Tests
Lecture 25 Recap: The Chain and Proof of Work | the Blockchain Backend
Section 4: Proof of Work | The Blockchain Backend
Lecture 26 Section Overview: Proof of Work | The Blockchain Backend
Lecture 27 Commits for this Section
Lecture 28 Proof of Work and the 51% Attack
Lecture 29 Difficulty and the Nonce Value | Tests
Lecture 30 Difficulty and the Nonce Value | Code
Lecture 31 Dynamic Difficulty and the Mine Rate
Lecture 32 Adjust the Difficulty in MineBlock
Lecture 33 Improve the Proof of Work System | Average Work Script
Lecture 34 Improve the Proof of Work System | Binary hashes
Lecture 35 Prevent Difficulty Jumps
Lecture 36 Recap: Proof of Work | the Blockchain Backend
Section 5: API and Network | The Blockchain Backend
Lecture 37 Section Overview: API and Network | The Blockchain Backend
Lecture 38 Commits for this Section
Lecture 39 Blockchain API and Network Overview
Lecture 40 Setup Express API
Lecture 41 Post Request to Mine a Block
Lecture 42 Real-Time Messaging Network through Pub/Sub | Overview
Lecture 43 Pub/Sub Options: Redis or PubNub
Lecture 44 Install Redis
Lecture 45 Redis Publisher/Subscriber Class
Lecture 46 Install PubNub
Lecture 47 PubNub: a Non-Redis Pub/Sub Alternative
Lecture 48 Broadcast Chain
Lecture 49 Start Peers and Broadcast Chain on API Mine
Lecture 50 Sync Chain on Connect
Lecture 51 Avoid Redundant Interactions
Lecture 52 Recap: API and Network | the Blockchain Backend
Section 6: Wallets, Keys, and Transactions | The Cryptocurrency Backend
Lecture 53 Section Overview: Wallets, Keys, and Transactions | The Cryptocurrency Backend
Lecture 54 Commits for this Section
Lecture 55 Wallets, Keys, and Transactions Overview
Lecture 56 Code Organization
Lecture 57 Create and Test Wallet Class
Lecture 58 Key Pair and Public Key Addresses
Lecture 59 Sign Data and Verifying Signatures
Lecture 60 Transaction Objects and the OutputMap | Tests
Lecture 61 Transaction Objects and the OutputMap | Code
Lecture 62 Transaction Inputs
Lecture 63 Cohesive Utility
Lecture 64 Validate Transaction
Lecture 65 Wallet Create Transaction
Lecture 66 Update Transactions with Multiple Outputs
Lecture 67 Improve the CryptoHash
Lecture 68 Transaction Update Edge Cases
Lecture 69 Recap: Wallets, Keys, and Transactions | The Cryptocurrency Backend
Section 7: Transaction Pool | The Blockchain and Cryptocurrency Backend
Lecture 70 Section Overview: Transaction Pool | The Blockchain and Cryptocurrency Backend
Lecture 71 Commits for This Section
Lecture 72 Transaction Pool Overview
Lecture 73 Create the Transaction Pool and Set Transactions
Lecture 74 API Transactions and Main Transaction Pool
Lecture 75 Handle Invalid Transactions
Lecture 76 Transaction Updates in the API
Lecture 77 Get Transaction Pool Map
Lecture 78 Broadcast Transaction
Lecture 79 Pubnub Set Transaction Edge Case
Lecture 80 Sync Transaction Pool Map on Connect
Lecture 81 Recap: Transaction Pool | the Blockchain Backend
Section 8: Mine Transactions | The Blockchain and Cryptocurrency Backend
Lecture 82 Section Overview: Mine Transactions | The Blockchain and Cryptocurrency Backend
Lecture 83 Commits for This Section
Lecture 84 Mine Transactions Overview
Lecture 85 Transaction Miner Class
Lecture 86 Grab Valid Transactions
Lecture 87 Reward Transaction
Lecture 88 Clear Blockchain Transactions
Lecture 89 Mine Transactions Endpoint
Lecture 90 Clear Recorded Transactions on Successful Replace
Lecture 91 Blockchain Balance Overview
Lecture 92 Calculate the Wallet Balance
Lecture 93 Calculate the Balance before each Transaction
Lecture 94 Wallet Balance From Recent Transaction
Lecture 95 Wallet-Info Request
Lecture 96 Validate Transaction Blocks Overview
Lecture 97 Valid Transaction Data | Tests
Lecture 98 Valid Transaction Data | Code
Lecture 99 Validate Input Balances
Lecture 100 Prevent Duplicate Transactions in Block
Lecture 101 Validate Transaction Chain
Lecture 102 Recap: Mine Transactions | The Blockchain and Cryptocurrency Backend
Section 9: The Blockchain and Cryptocurrency Backend | Review
Lecture 103 The Blockchain and Cryptocurrency Backend | Review
Section 10: The Frontend Blockchain
Lecture 104 Section Overview: The Frontend Blockchain
Lecture 105 Commits for This Section
Lecture 106 The Frontend Blockchain Overview
Lecture 107 Optional: React.js Overview
Lecture 108 Serve a Frontend Page
Lecture 109 Add JavaScript to the Frontend
Lecture 110 Correct Version of parcel-bundler
Lecture 111 Build React into the Frontend
Lecture 112 Frontend Development Workflow
Lecture 113 App Component
Lecture 114 Fix to Upcoming Lecture: Fetch and Display Wallet-Info
Lecture 115 Fetch and Display Wallet-Info
Lecture 116 Visualize the Blocks
Lecture 117 Seed the Backend with Data
Lecture 118 Fonts link for upcoming lecture: Stylize the Application
Lecture 119 Stylize the Application
Lecture 120 Make a Block Component with Props
Lecture 121 Recap: The Frontend Blockchain
Section 11: The Frontend Cryptocurrency
Lecture 122 Section Overview: The Frontend Cryptocurrency
Lecture 123 Commits for This Section
Lecture 124 The Frontend Cryptocurrency Overview
Lecture 125 Toggle Transaction Displays
Lecture 126 Transaction Component
Lecture 127 React Router
Lecture 128 Conduct Transaction Component
Lecture 129 Post Transaction with Component
Lecture 130 Transaction Pool Component
Lecture 131 Poll the Transaction Pool
Lecture 132 Mine a Block of Transactions through the Frontend
Lecture 133 Recap: The Frontend Cryptocurrency
Section 12: Deploying to Production and Full-Stack Improvements
Lecture 134 Section Overview: Deploying to Production and Full-Stack Improvements
Lecture 135 Commits for This Section
Lecture 136 Ignore Redis, use PubNub
Lecture 137 Prepare for production and Publish to Heroku
Lecture 138 Start Production Peers
Lecture 139 Known Addresses | Backend
Lecture 140 Known Addresses | Frontend
Lecture 141 Blocks Pagination | Backend
Lecture 142 Blocks Pagination | Frontend
Lecture 143 Recap: Deploying to Production and Backend-Included Improvements
Section 13:[Optional reference section] Mega JavaScript Overview
Lecture 144 Optional: Mega JavaScript & Node.js Overview for JS Newcomers | Part 1
Lecture 145 Optional: Mega JavaScript & Node.js Overview for JS Newcomers | Part 2
Section 14:[Optional reference section] In-Depth JavaScript Overview
Lecture 146 Section Overview: Deploying to Production and Full-Stack Improvements
Lecture 147 The Console, Operators, and Variables
Lecture 148 Booleans and Conditionals
Lecture 149 Syntax - Semicolons and Comments
Lecture 150 Undefined and Primitives
Lecture 151 Arrays
Lecture 152 Objects
Lecture 153 Loops and Iteration
Lecture 154 Functions - Declarations vs. Expressions
Lecture 155 Arrow Functions
Lecture 156 Methods and the `this` Keyword
Lecture 157 More on `this` and Function Expressions vs. Arrow functions
Lecture 158 Interview Question | The `this` Keyword
Lecture 159 Callbacks
Lecture 160 Interview Question | Callbacks
Lecture 161 A Dynamic Language and Types
Lecture 162 Almost Everything is an Object
Lecture 163 Equality and Type Coercion
Lecture 164 Truthy and Falsy
Lecture 165 Null vs. Undefined
Lecture 166 Explicit Type Conversion
Lecture 167 Interview Question | JavaScript Types
Lecture 168 Let, Const, and Mutability
Lecture 169 Let, Const, Var, and Scope
Lecture 170 Var and Function Hoisting
Lecture 171 Interview Question | Scope and Hoisting
Lecture 172 Template Literals and Ternary Operators
Lecture 173 The Property Shorthand and Destructuring Assignment
Lecture 174 Object methods
Lecture 175 Spread Syntax
Lecture 176 Object.is, References, and Shallow Clone
Lecture 177 JSON.parse, JSON.stringify, and an Attempt at Deep Cloning
Lecture 178 Custom and Lodash CloneDeep
Lecture 179 Interview Question | Cloning an Object
Lecture 180 Closures
Lecture 181 Function Factories
Lecture 182 Higher Order Functions
Lecture 183 Interview Question | Closures, Higher-Order Functions, and Callbacks
Lecture 184 Object-Oriented Programming
Lecture 185 Constructor functions
Lecture 186 Classes
Lecture 187 Prototypes and the Prototype-Based Inheritance
Lecture 188 Object Prototype, .__proto__, and the prototype chain
Lecture 189 Interview Question | Prototype-Based Inheritance
Lecture 190 Asynchronous Code with SetTimeout
Lecture 191 Fetch and Promise
Lecture 192 Promise from Scratch
Lecture 193 JavaScript Engine and Runtime
Lecture 194 Await and Async
Lecture 195 Interview Question | Asynchronous JavaScript
Section 15: Conclusion
Lecture 196 Congratulations! And Final Remarks
Lecture 197 Challenges List | Article
Lecture 198 Bonus Lecture: More Content!
Code:
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