Mining Bitcoin

Links for reference:
https://www.luno.com/blog/en/post/bitcoins-hash-rate-is-hitting-record-highs-but-does-it-even-matter
https://www.baeldung.com/java-blockchain
https://medium.com/programmers-blockchain/create-simple-blockchain-java-tutorial-from-scratch-6eeed3cb03fa

My Simple Pseudo BLock Chain in JavaScript

class Block {

      constructor(index, timestamp, data, prevHash = '') {

        this.index = index;

        this.timestamp = timestamp;

        this.data = data;

        this.prevHash = prevHash;

        this.hash = this.calculateHash();

        }

       calculateHash(){

       	return 'need to calc the hash';

       }

      }

      
class Blockchain{

      constructor(){

        this.chain = [this.createGenesisBlock()];

      }

      createGenesisBlock(){

        return new Block(0, "09/01/2021", "Genesis block", "0");

      }

      
      getLatestBlock(){

        return this.chain[this.chain.length - 1];

      }

      addBlock(newBlock){

        newBlock.prevHash = this.getLatestBlock().hash;

        newBlock.hash = newBlock.calculateHash();

        this.chain.push(newBlock);

      }

}

let myCoin = new Blockchain();

myCoin.addBlock(new Block(1, "09/20/2021", {amount: 4}));

myCoin.addBlock(new Block(2, "09/27/2021", {amount: 5}));

console.log(JSON.stringify(myCoin, null, 4));

---

Console output:

{

    "chain": [

        {

            "index": 0,

            "timestamp": "09/01/2021",

            "data": "Genesis block",

            "prevHash": "0",

            "hash": "need to calc the hash"

        },

        {

            "index": 1,

            "timestamp": "09/20/2021",

            "data": {

                "amount": 4

            },

            "prevHash": "need to calc the hash",

            "hash": "need to calc the hash"

        },

        {

            "index": 2,

            "timestamp": "09/27/2021",

            "data": {

                "amount": 5

            },

            "prevHash": "need to calc the hash",

            "hash": "need to calc the hash"

        }

    ]

}

}

This pseudo block chain is missing the nonce, which is what gets the block's hash to start with appropriate number of leading zeros.