Design and Implementation of Web System Based on Blockchain

The internet has a great development, but the cyber crimes are lack of effective supervision. Furthermore, the network congestion is still a common phenomenon in our daily life. This paper proposes a decentralized web system based on blockchain to solve the above problems. In this scheme, web content publisher uploads the web contents to the IPFS (InterPlanetary File System) net which is a peer to peer storage network, and gets the hashes of the web contents from IPFS system, then writes these hashes to the smart contract which has been deployed on the Ethereum blockchain; thousands of web users can read the hashes of these web contents on this smart contract on Ethereum blockchain, and browse the corresponding web contents by hashes on the decentralized IPFS network. The experimental results show that the decentralized web system based on Ethereum blockchain and IPFS network can provide faster access to web contents than the traditional HTTP web. Further more, this web system has strong ability to withstand large-scale concurrent based on IPFS network which is the decentralized web content storage system without centralized web server and can fight against the malicious tampering attack based on Ethereum blockchain which can resist 51% attack and record all transactions including tampering behaviors on the Ethereum blockchain with timestamp.