. Dr. Masoor Alicherry, Vice President of Engineering at Vizury Interactive Solution Pvt. Ltd. gave an expert lecture on Bitcoins: Story Of Cryptocurrency on 1st April 2014. Bitcoin is a peer to peer payment system introduced as open source in 2009. It is also known as a decentralized virtual currency as it is not controlled by any bank or government enterprises. The lecture covered the history as well as the technological overview of Bitcoins. While Bitcoins uses SHA-2 256 bit hashing and Digital Signature, it still faces scrutiny for illegal activities that took place in recent time.