https://github.com/0xs34n/blockchain

📖Code for Blockchain Demo
https://github.com/0xs34n/blockchain

blockchain cryptography javascript

Last synced: about 2 months ago
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📖Code for Blockchain Demo

• Host: GitHub
• URL: https://github.com/0xs34n/blockchain
• Owner: 0xs34n
• Created: 2017-11-27T06:43:46.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2023-07-07T23:38:05.000Z (about 1 year ago)
• Last Synced: 2024-05-21T22:46:43.052Z (4 months ago)
• Topics: blockchain, cryptography, javascript
• Language: JavaScript
• Homepage: https://blockchaindemo.io
• Size: 168 KB
• Stars: 917
• Watchers: 37
• Forks: 265
• Open Issues: 17
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.ISC.txt

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• awesome - blockchain - 📖Code for Blockchain Demo (JavaScript)

README

        


  


  

  


    Blockchaindemo.io

  




Code for learning the blockchain data structure





## 📦 Installation

To install this application, you'll need

[Node.js](https://nodejs.org/en/download/) 7+ (which comes with

[npm](http://npmjs.com)) installed on your computer. From your command line:

#### Source

You'll need [Git](https://git-scm.com) to run the project from source. From your

command line:

```bash

# Clone this repository

$ git clone https://github.com/seanseany/blockchain

# Go into the repository

$ cd blockchain

# Install dependencies

$ npm install

# Run the app

$ npm start

```

## ℹ️ FAQ

#### When or why I would use this?

You should use this if you want to build a bitcoin wallet, payment processor, or

bitcoin merchant portal in javascript. You might also be interested in why

decentralized networks or p2p applications are useful, or what advantages they

have; this project seems like a good way to learn about that.

#### What is the block chain actually for?

The blockchain is for authorizing payments of a cryptocurrency between two peers

without the need for a centralized 3rd party approving of the transaction. There

are other uses of the blockchain which are more in line with the second point,

digital signatures, but they are secondary to the main purpose of peer to peer

transfer of value. Bitcoin is blockchain's killer app.

#### Why the hell should I care about the blockchain?

Blockchain facilitates trade over a network. Imagine a metal as scarce as gold

with a magical property of "can be transported over a communications channel".

This has implications with respect to individual rights, the world economy, and

the way we monetize and transfer value at a level higher than bartering directly

for goods.

Lately people are distancing themselves from the proof-of-work concept and are

using blockchain to describe only the mechanism of signing a transaction as

verification of sending an amount. Change "sending an amount" to almost anything

else - authorizing a change in a ruleset, casting a vote for a politician,

verifying a point of IoT data is authentic. Now add in the concept of a

peer-to-peer network to this and you've eliminated a middleman that once

existed, thereby improving the efficiency and reducing cost. In these cases,

"blockchain" refers to the structuring of a program or database in such a way

that it has no central point of failure while still providing all of the

features expected. For example, augur and gnosis are decentralized prediction

markets. Ethereum has implemented smart contracts which enable decentralized

release of funds based on a gambling outcome.