Exploring the Consensus Algorithms of Blockchains

Since the Blockchain network is a decentralized network, an inherent challenge of validation arises. For any block to be added in a blockchain, it has to undergo validation. Blockchain is like a database containing valuable information, therefore, it becomes imperative for all the nodes to make sure they have the most updated and verified copy of it. Part of what makes Blockchain technology so popular is its robust security and validation.
The mechanism through which the blocks are verified and made secure is called a consensus algorithm. Providing a method for every new block in a blockchain to be the only true version that is agreed upon by all the nodes. Different protocols and rules exist in the consensus agreement which provides trust for unknown nodes to agree upon the present state of the distributed ledger. Essentially, consensus algorithms provide a criterion for all the nodes to agree upon a common validation process.
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