Simple code to show the creation and 'Proof-of-work' of a blockchain.
This is a very simple implementation of a BlockChain.
This is not a secure BlockChain and has many limitations.
Run the below command when inside the BlockChain directory to initalize your code with necessary modules.
npm install --save crypto-js
For the 'Proof-Of-Work' i have set the difficulty to 5. In an actual BlockChain the difficulty is usually set to 15+. The difficulty shows the number of zeroes the hash should begin with. The higher the difficulty, the more time each block will take to get mined.
In line 85 i have tried to tamper with the data of a Block in the chain, this is not so easy in the real world.
I have done it simply to show the integrity of the chain upon tampering!!
Running the Code
node blockchain.js
Here is a screenshot of the output.
