In recent times, a new technology – Blockchain was brought forward to the global society. The world is using the term ‘Blockchain technology’ to signify diverse things such as the Bitcoin Blockchain, virtual currencies like Cardano and XRP, and smart contracts. Blockchain-based applications are springing up, covering several fields comprising financial services, reputation system and Internet of Things (IoT), and so on. Generally, Blockchain is implicit to be distributed ledgers that is a list of transactions verified and stored into blocks and shared among a number of computer nodes in a ...