INTRODUCTION TO BLOCKCHAIN Blockchain is the buzzword nowadays. It has become much popular in recent years because of the rise of cryptocurrencies like bitcoin and ethereum. Here we will get to know the core concepts of blockchain technology. DEFINITION Blockchain is the distributed ledger that keeps the records of transactions in blocks, and each block contains data, hash value, and the hash value of the previous block, which then makes the whole chain of blocks, called blockchain. The type of data being stored in a block depends on the type of the blockchain. For example, bitcoin blockchain will contain the information of bitcoin sender, receiver, and amount of bitcoins transacted. The hash value is the cryptographic and encrypted value used as the unique identifier that is generated for every new block in order for that block to be identified or accessed in a chain of blocks. Finally, each block contains the hash value of the previous block that makes the crypt...