Udemy
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
Development
Web Development Data Science Mobile Development Programming Languages Game Development Database Design & Development Software Testing Software Engineering Development Tools No-Code Development
Business
Entrepreneurship Communications Management Sales Business Strategy Operations Project Management Business Law Business Analytics & Intelligence Human Resources Industry E-Commerce Media Real Estate Other Business
Finance & Accounting
Accounting & Bookkeeping Compliance Cryptocurrency & Blockchain Economics Finance Finance Cert & Exam Prep Financial Modeling & Analysis Investing & Trading Money Management Tools Taxes Other Finance & Accounting
IT & Software
IT Certification Network & Security Hardware Operating Systems Other IT & Software
Office Productivity
Microsoft Apple Google SAP Oracle Other Office Productivity
Personal Development
Personal Transformation Personal Productivity Leadership Career Development Parenting & Relationships Happiness Esoteric Practices Religion & Spirituality Personal Brand Building Creativity Influence Self Esteem & Confidence Stress Management Memory & Study Skills Motivation Other Personal Development
Design
Web Design Graphic Design & Illustration Design Tools User Experience Design Game Design Design Thinking 3D & Animation Fashion Design Architectural Design Interior Design Other Design
Marketing
Digital Marketing Search Engine Optimization Social Media Marketing Branding Marketing Fundamentals Marketing Analytics & Automation Public Relations Advertising Video & Mobile Marketing Content Marketing Growth Hacking Affiliate Marketing Product Marketing Other Marketing
Lifestyle
Arts & Crafts Beauty & Makeup Esoteric Practices Food & Beverage Gaming Home Improvement Pet Care & Training Travel Other Lifestyle
Photography & Video
Digital Photography Photography Portrait Photography Photography Tools Commercial Photography Video Design Other Photography & Video
Health & Fitness
Fitness General Health Sports Nutrition Yoga Mental Health Dieting Self Defense Safety & First Aid Dance Meditation Other Health & Fitness
Music
Instruments Music Production Music Fundamentals Vocal Music Techniques Music Software Other Music
Teaching & Academics
Engineering Humanities Math Science Online Education Social Science Language Teacher Training Test Prep Other Teaching & Academics
AWS Certification Microsoft Certification AWS Certified Solutions Architect - Associate AWS Certified Cloud Practitioner CompTIA A+ Cisco CCNA Amazon AWS CompTIA Security+ AWS Certified Developer - Associate
Photoshop Graphic Design Adobe Illustrator Drawing Digital Painting InDesign Character Design Canva Figure Drawing
Life Coach Training Neuro-Linguistic Programming Mindfulness Personal Development Meditation Personal Transformation Life Purpose Emotional Intelligence CBT
Web Development JavaScript React CSS Angular PHP WordPress Node.Js Python
Digital Marketing Google Ads (Adwords) Social Media Marketing Google Ads (AdWords) Certification Marketing Strategy Internet Marketing YouTube Marketing Email Marketing Retargeting
SQL Microsoft Power BI Tableau Business Analysis Business Intelligence MySQL Data Analysis Data Modeling Data Science
Business Fundamentals Entrepreneurship Fundamentals Business Strategy Online Business Business Plan Startup Freelancing Blogging Home Business
Unity Game Development Fundamentals Unreal Engine C# 3D Game Development C++ 2D Game Development Unreal Engine Blueprints Blender
30-Day Money-Back Guarantee
Development Software Engineering Blockchain

Learn Blockchain By Building Your Own In JavaScript

Code out your very own Blockchain and decentralized network in the JavaScript programming language.
Highest Rated
Rating: 4.7 out of 54.7 (1,096 ratings)
15,149 students
Created by Eric Traub
Last updated 7/2018
English
English [Auto]
30-Day Money-Back Guarantee

What you'll learn

  • Have your own, fully functional, blockchain prototype.
  • Learn how the code behind blockchain technology functions.
  • Learn why blockchain technology is a very secure means of storing data.
  • Learn how a decentralized blockchain network works.
Curated for the Udemy for Business collection

Course content

8 sections • 75 lectures • 7h 54m total length

  • Preview02:57
  • Preview03:03
  • What Is A Blockchain?
    Preview05:26
  • Preview04:02
  • Project Source Code
    01:10
  • Project Source Code Link Article
    00:19

  • Preview01:44
  • Constructor Function Explanation
    07:57
  • Prototype Object Explanation
    06:07
  • Preview03:41
  • Preview09:35
  • Testing Create New Block Method
    05:59
  • Get Last Block Method
    01:03
  • Create New Transaction Method
    06:38
  • Testing Create New Transaction Method
    12:20
  • SHA256 Hashing
    05:41
  • Hash Block Method
    05:42
  • Testing Hash Block Method
    05:00
  • What Is A Proof Of Work?
    09:23
  • Proof Of Work Method
    05:50
  • Testing Proof Of Work Method
    08:45
  • Creating A Genesis Block
    03:31
  • Section 1 Wrap-Up
    00:43
  • Blockchain Source Code
    00:18

  • Building An API - Introduction
    01:50
  • Setting Up ExpressJS
    03:39
  • Building The API Foundation
    03:18
  • Installing Postman & Body-Parser
    12:53
  • Building The "GET /blockchain" Endpoint
    04:00
  • Building The "POST /transaction" Endpoint
    07:53
  • Building The "GET /mine" Endpoint
    14:33
  • Testing The New Endpoints
    12:49

  • Decentralized Blockchain Network - Introduction
    02:33
  • Creating Multiple Nodes
    11:43
  • Testing The Nodes
    03:58
  • Adding The Current Node's Url
    03:09
  • New Endpoints Outline
    08:30
  • Building "POST /register-and-broadcast-node" Endpoint - Part 1
    11:10
  • Building "POST /register-and-broadcast-node" Endpoint - Part 2
    07:00
  • Building "POST /register-node" Endpoint
    06:39
  • UPDATE: Installing the "request" library
    00:24
  • Testing "POST /register-node" Endpoint
    05:47
  • Building "POST /register-nodes-bulk" Endpoint
    08:46
  • Testing "POST /register-nodes-bulk" Endpoint
    04:25
  • Testing All Network Endpoints
    12:46

  • Synchronizing The Network - Introduction
    03:10
  • Transactions Introduction
    03:07
  • Refactoring Create Transaction Method
    05:18
  • Building "POST /transaction/broadcast" Endpoint
    09:05
  • Refactoring "POST /transaction" Endpoint
    05:18
  • Testing Transaction Endpoints
    08:03
  • Updating Mining Information
    03:30
  • Updating Mining Endpoint
    10:54
  • Building "POST /receive-new-block" Endpoint
    09:04
  • Testing New Endpoints
    17:49

  • Consensus Introduction
    04:26
  • Chain Is Valid Method
    16:10
  • Testing Chain Is Valid Method
    10:42
  • Building "GET /consensus" Endpoint
    20:23
  • Testing "GET /consensus" Endpoint
    08:08

  • Block Explorer Introduction
    02:27
  • Block Explorer Endpoints Outline
    03:42
  • Get Block Method
    04:39
  • Building "GET /block/:blockHash" Endpoint
    06:38
  • Get Transaction Method
    06:09
  • Building "GET /transaction/:transactionId" Endpoint
    06:59
  • Get Address Data Method
    07:51
  • Building "GET /address/:address" Endpoint
    09:32
  • Adding The Block Explorer File
    05:52
  • Block Explorer File Source Code
    00:01
  • Block Explorer File Explanation
    04:35
  • Testing The Block Explorer!
    10:32

  • Course Recap
    05:14
  • Next Steps
    00:41
  • Congrats !!!
    00:04

Requirements

  • Basic knowledge of JavaScript.
  • NodeJS installed.
  • The entire course is done on a Mac - if you have a Windows PC, you will be responsible for adapting the information to that operating system.

Description

In this course you will be building your very own blockchain and decentralized blockchain network by using the JavaScript programming language.  By building your own blockchain, you will learn how blockchain technology works under-the-hood, how decentralized blockchain networks function, how the code behind these technologies work, and why blockchain is such a secure and valuable technology.

The blockchain that you build in this course will have all of the following features:

  • A proof of work algorithm to secure the network.
  • Hashing algorithms to secure the data within the blockchain.
  • The ability to mine (create) new blocks that contain data.
  • The ability to create transactions and store them in blocks.
  • An API/server that will be used to interact with the blockchain from the internet.
  • It will be hosted on a decentralized blockchain network.
  • A consensus algorithms to verify that the network nodes have valid data and are synchronized.
  • A broadcasting system to keep the data in the blockchain network synchronized.
  • Many other awesome features!...

When you have completed this course you will have built out your own blockchain prototype in code.  You will have a thorough understanding of how blockchain technology actually works and why this technology is so secure and valuable.  You will also have a deep understanding of how decentralized blockchain networks function and why decentralization is such an important feature for securing the blockchain. The whole process of storing, securing, and validating data/transactions on the blockchain will become very clear.

Who this course is for:

  • Anyone who wants to build their own Blockchain Prototype in code.
  • Anyone who wants to learn how Blockchain Technology works under-the-hood.
  • Anyone who wants to understand how the "decentralization" of blockchain actually works.
  • Anyone who wants to gain a better understanding of why Blockchain Technology is valuable.
  • Anyone who wants to learn how the code behind Blockchain Technology works.

Featured review

Sourabh Naidu
Sourabh Naidu
27 courses
9 reviews
Rating: 5.0 out of 59 months ago
What an Amazing Course Best Updated 2020 , it will bring you to be a Master of all Blockchain concepts , This course gives you High end Knowledge, Eric repeats the complex topics many times to make it easier for you to understand . He is Amazing . Love this Course. But no one there to help you , Instructor dont see Q&A , some libraries out dated , you will get stuck

Instructor

Eric Traub
Software Engineer and Instructor
Eric Traub
  • 4.7 Instructor Rating
  • 5,877 Reviews
  • 55,778 Students
  • 5 Courses

HI! I'm Eric.  I currently work as a software engineer in New York City and I have extensive experience working as a teacher, instructing people in a variety of different subjects.  I changed my career from teaching to software engineering because of the excitement it brings me and the passion that I have for it.  I am lucky enough now to have the opportunity to combine both of these passions - software engineering and teaching!

  • Udemy for Business
  • Teach on Udemy
  • Get the app
  • About us
  • Contact us
  • Careers
  • Blog
  • Help and Support
  • Affiliate
  • Terms
  • Privacy policy
  • Cookie settings
  • Sitemap
  • Featured courses
Udemy
© 2021 Udemy, Inc.