Blockchain Consensus Algorithms Blockchain development has transformed multiple industries and is now unstoppable. The distributed decentralized network of Blockchain provides immutability, privacy, security, and transparency. Also, there is no involvement of a central authority to verify and validate the transaction, which makes every transaction completely secured and verified. It is possible due to the presence of a consensus algorithm protocol that acts as an integral part of any blockchain. The Consensus Algorithm is a system that is used to validate the transaction authenticity and maintain underlying blockchain security.