Investigating the Impact of Consensus Algorithm on Scalability in Blockchain Systems

In the current era, blockchain has emerged as one best and promising technology. All cryptocurrencies have also gained a lot of popularity around globe which are based on Blockchain provides distributed architecture, in transactions verified by different validators using algorithms then stored ledger. The verification is done consensus verifies that incoming transaction correct reliable nodes working peer-to-peer network. Consensus ensure integrity security blockchain. There various types used technology depending architecture usage, some Proof Work (PoW), Stake (PoS) etc. algorithm most widely across community. It many popular cryptocurrency networks like Litecoin Bitcoin. requires larger computation power while verifying transactions. selection important parts blockchain, mechanism considered to be core easier predict guarantee security, reliability, fault tolerance, recoverability system if protocol selected. A single can never fulfill all requirements, there always tradeoff algorithms. Therefore, it very select suited for network validates without any third-party platform prevents malicious activities This paper investigates comparison among their effectiveness viability.