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Udemy

Blockchain for beginners:build certificate registration DApp

via Udemy

Overview

Use Ethereum, Solidity, and Smart Contracts to build Certificate Registration DApp based on the blockchain

What you'll learn:
  • Understand the basic concept of Blockchain and Ethereum
  • Setup a private blockchain network for local development
  • Understand how smart contract works and communicates with DApp
  • Develop with the latest version of Ethereum development tools (Web3js v1.0 and Solidity v0.5.0)
  • Develop a certification registration Dapp deployed to Ethereum testnet
  • Understand how MetaMask communicates with your DApp

What wecover

  • We briefly cover the philosophy of the blockchain and Ethereum.

  • Then we will explain how blockchains work, what is Decentralized App and how smart contract communicates with DApp

  • We setup the easy development environment, including tools that can be used with minimum steps

  • And the biggest part of the course is dedicated to guiding you through a simple Decentralized App


Some of the keyword definition:

Blockchain is a growing list of digital pieces of information which are linked using cryptography. It is an open, distributed ledger that can record transactions between two parties efficiently and also in a verifiable and permanent way.

Decentralized applications (dApps) are applications that run on blockchain rather than a database.

Smart contract is defined as pieces of computer code that self-execute when predetermined conditions are fulfilled. The results of the transaction will be written onto a distributed ledger or blockchain.


We covered the following concept:

  • Ethereum

  • Account

  • Gas

  • Smart Contract

  • Decentralized App

  • Blockchain

  • Bitcoin

  • Solidity

  • Web3.js

  • Ropsten Testnet

What tools and libraries are used?

  • Ethereum

  • The Metamask Chrome extension

  • The Solidity smart contract language (0.5.0)

  • The Web3.js(Web3 1.0.0)

  • The Ganache Ethereum node emulator

  • Github

  • Visual Studio Code (text editor)

  • The Ropsten test network

All our codes are stored in Github and the solidity code will be stored as .sol file.

  • Lesson 2 unit 1: @hashcademy-> choose certificate_dapp ->choose branch master

  • Lesson 2 unit 2: @hashcademy-> choose certificate_dapp ->before modify javascript: choose branch 1a, after modify javascript: choose branch 2

  • Lesson 2 unit 3: @hashcademy-> choose certificate_dapp ->choose branch 3

  • Lesson 2 unit 4: @hashcademy-> choose certificate_dapp ->choose branch 4

  • Lesson 2 unit 5: @hashcademy-> choose certificate_dapp ->choose branch 5


Taught by

Eric Tang and Hashcademy Learning Platform

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