Quote Originally Posted by Bhavya View Post
Hello Friends,

Block chain is a digital ledger use to record the transactions made in bitcoin or another cryptocurrency.
I heard that block chain is unhackable.


Is it true that the block chain is unhackable?
This involves crippling of one of the nodes in such a way that it fails to interact with other nodes. In this case, the percentage of mining hashrate does not pose as a restricting attribute. So it is hack able!