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JavaScript Blockchain

A simple implementation of blockchain using express and web sockets that allows you to add transaction and view the chain details.

Frameworks Used

  1. Node.JS

  2. Socket.io

  3. Express

  4. PM2 Runtime

Start-Up

  1. Run yarn install or npm install

  2. Run yarn start or npm start

Endpoints

POST /nodes

Request Body:

{
  "host": "localhost",
  "port": 5000
}

POST /transaction

Request Body:

{
  "sender": "Foo",
  "receiver": "Bar",
  "amount": 4
}

GET /chain

Response:

[
  {
    "index": 0,
    "proof": 0,
    "timestamp": 1539970017557,
    "previousBlockHash": 1,
    "transactions": []
  },
  {
    "index": 1,
    "proof": 6109837942.514816,
    "timestamp": 1539970045394,
    "previousBlockHash": "4794a4da7764850e31a2974ea1983ee048e5d8db9d882c16e9d4b55c1ed4fd3e",
    "transactions": [
      {
        "sender": "A",
        "receiver": "B",
        "amount": 1,
        "timestamp": 1539970035916
      },
      {
        "sender": "C",
        "receiver": "D",
        "amount": 2,
        "timestamp": 1539970045393
      }
    ]
  },

LICENSE

MIT