TypeScript Blockchain Demo

This is a TypeScript project that demonstrates how a simple blockchain works under the hood. It implements a basic blockchain with the following features:

• Blocks are created with a data (a string), a previous hash (a string), and a hash (also a string).
• The first block (the genesis block) is created with a predefined hash value.
• Subsequent blocks are created with their data and the hash of the previous block concatenated together and hashed again.
• The blockchain itself is just an array of blocks.

Installation

To run this project, you will need Node.js and npm (Node Package Manager) installed on your system.

1. Clone this repository to your local machine:

git clone https://github.com/omkar342/Blockchain-Using-TypeScript-

2. Navigate to the project directory:

cd Blockchain-Using-TypeScript-

3. Install the required dependencies:

npm install

4. Compile the TypeScript code to JavaScript:

tsc ./blockcahinDemonstration.ts

5. Run the Javascript code

node ./blockcahinDemonstration.js

Output

This will display the blockchain in the console.

[
  {
    data: 'genesis data',
    hash: 'aeebad4a796fcc2e15dc4c6061b45ed9b373f26adfc798ca7d2d8cc58182718e',
    prevHash: '9af15b336e6a9619928537df30b2e6a2376569fcf9d7e773eccede65606529a0'
  },
  {
    data: '1',
    hash: '6c36f48205be90c4b6d73568fb006ad39f4bab9a76a95d62b6ffb3c8d2d2155b',
    prevHash: 'aeebad4a796fcc2e15dc4c6061b45ed9b373f26adfc798ca7d2d8cc58182718e'
  },
  {
    data: '2',
    hash: '3a929f96d29c00c342a6f5858333cab36a1c38729859b5dedfa8eafecee67684',
    prevHash: '6c36f48205be90c4b6d73568fb006ad39f4bab9a76a95d62b6ffb3c8d2d2155b'
  },
  {
    data: '3',
    hash: 'a46e1f400c3a383716a522238e7370660dcc9da0aa88e5d1445621076b1eb63c',
    prevHash: '3a929f96d29c00c342a6f5858333cab36a1c38729859b5dedfa8eafecee67684'
  }
]

Usage

You can modify the blockchainDemonstration.ts file to add more blocks to the blockchain or change the data of existing blocks. The Blockchain class provides the following methods:

• addBlock(data: string): Adds a new block to the blockchain with the given data.
• printChain(): Prints the entire blockchain to the console in JSON format.

Credits

This project was created by Omkar. Feel free to use it as a starting point for your own blockchain projects.