A Comprehensive survey on Blockchain: Working, security analysis, privacy threats and potential applications

Abstract

Recently, Blockchain a decentralized as well as distributed public ledger technology in (P2P) peer-to-peer network, has received considerable attention. It applies a block structure (linked) used to store as well as verify data and also applies the trusted mechanism for synchronization of changes in data in order to possibly create a tamper-proof digital platform for sharing as well as storing data. Blockchain can also be used to diverse the interactive system of internet (e.g. supply chain system, Internet of things). The blockchain model of bitcoin has been used in wide range of services like from asset trading to transaction of real estate, from services of escrow to national income distribution system in some countries. In this paper we present a comprehensive survey on blockchain, working of blockchain, security analysis on blockchain, privacy threats for blockchain and potential applications of blockchain.