Missing previous block hash?

[Jaked222]

Hello Savjee,

Correct me if I'm wrong, but in the third version of this code, shouldn't we add the latest block's hash when creating a new block in minePendingTransactions. Doesn't this ensure the integrity of our chain, were someone to try and alter a block?

for example:

  minePendingTransactions(miningRewardAddress) {
	let block = new Block(Date.now(), this.pendingTransactions, this.getLatestBlock().hash);
	block.mineBlock(this.difficulty);

	this.chain.push(block);
		
	this.pendingTransactions = [
		new Transaction(null, miningRewardAddress, this.miningReward)
	];
  }

also one small matter of cleanup, we no longer need to include this.index in the calculateHash function.

Thanks for the tutorials! They have definitely helped me to better understand what a blockchain is.

[Savjee]

You're absolutely right! What an oversight on my end!

I fixed those issue's in 9ebadad and 552d7ce

Thanks a lot!