Simply put, a blockchain is a distributed database or public ledger of all digital transactions or events that occur and are shared between participating parties. Blockchains are used in cryptocurrencies such as Bitcoin and Ethereum. After unanimous approval of the vast majority of users connected to the system, every transaction recorded in the public registry is considered duly verified. Once the information is added to the system, it cannot be deleted. Blockchain maintains an immutable and verifiable record of every transaction that has taken place in cryptocurrency history. Bitcoin is the best-known application of blockchain technology today. Bitcoin is a peer-to-peer digital currency that operates without the need for a central authori...