IJIRCSTJournal International Journal of Innovative Research in Computer Science and Technology I S Volume 9 Issue 6 Computer Science English November - December 2021 N N Y 2022 01 26 Computer Sciences An Overview on Blockchain English Y 127 130 Mrinal Paliwal English Y Pankaj Saraswat English N https://doi.org/10.55524/ijircst.2021.9.6.29 Blockchain is a decentralized technology. When it comes to resolving business issues, it wields considerable power. Every transaction on the blockchain is encrypted, and each transaction is linked to a previous transaction or record. Blockchain transactions are validated by algorithms running on nodes. A single entity cannot start a transaction. Eventually, blockchain provides transparency by allowing any participant to view transactions at any moment. Smart contracts provide secure transactions, minimizing the risk of third-party interruptions. Ethereum is a decentralized platform based on smart contracts. It enables developers to create markets that transfer money according to the instructions given years ago. Blockchain is distinguished by two key characteristics: immutability and decentralization. Deals are completed faster; Transactions and authentication are completed in a matter of seconds, and much more. English Blockchain, Cryptocurrency, Ledger, Network, Transaction. https://ijircst.org/abstract.php?article_id=649