/bitcoin-learn-dev

Recreating Bitcoin like Blockchain in JavaScript to learn the intricacies of developing Blockchain guided by Bitcoin Whitepaper published by Satoshi Nakamoto

Primary LanguageJavaScriptMIT LicenseMIT

Learn Blockchain by building one

Recreating Bitcoin like Blockchain to learn the intricacies of developing Blockchain guided by Bitcoin Whitepaper published by Satoshi Nakamoto

Commands to setup the required environment (assuming you have nodejs and npm pre-installed):

  • create a folder with a name of your choice:
    mkdir bchain-learn
  • navigate to that folder:
    cd bchain-learn
  • use npm to create package,jason file which will have details about the project (-y answers yes to all interactive questions on terminal):
    npm init -y
  • install development dependancy - nodemon. nodemon along with npm capabilities has inbuilt live server capabilities which completely reloads and restarts our project when we make any changes:
    npm i nodemon --save-dev
  • add this line to package.json script after putting a comma (since name of file is dev-test.js):
    "dev-test": "nodemon dev-test"
  • to run the the development server:
    npm run dev-test
  • Add crypto-js module to npm which has SHA-256 algorithm prebuilt:
    npm - crypto-js --save
  • install test runner - jest(executes testing files in JS project. it looks for testing files with test.js extension - we have created block.test.js):
    npm i jest --save-dev
  • run jest testing:
    npm run test
  • Add the express module to npm which is required to build our API:
    npm i express  --save
  • running the dev:
    • run the express app on default port 3001: npm run dev
    • run the express app on custom port: HTTP_PORT=*MENTION PORT NUMBER* npm run dev
  • Install Postman according to your Operating System - Google it if you are unfamiliar - run the follwing GET request and press send (ensure step 10 is running in the baground):
    localhost:3001/blocks
  • Add body parser module - it has middleware function which allows us to receive JSON data within POST request in our express app from the users who create those post requests:
    npm i body-parser --save
  • Goto Postman and do the following:
    • add a new POST request tab
    • enter request URL: localhost:3001/mine
    • goto Body (below request URL)
    • click on raw
    • select file format as "JSON" from the dropdown menu
    • add the data:
          {
          "data": "random-1"
      }