Cloud Infrastructure has become the need of the hour which has resulted in increasing interest of attackers. The most prominent attack on the cloud in recent years is DDoS. DDoS attack results in service unavailability due to a botnet that overflood the network with service requests. The blockchain technology used to diminish DDoS has not yet been completely researched and arranged. This project will survey, and position cutting-edge DDoS decrease arrangements in light of blockchain technology. Considering our research, we will likewise talk about the research difficulties and future headings for executing a blockchain-based DDoS moderation arrangement. We expect this project will fill in as a beginning stage and reference for future researchers attempting to recognize and moderate denial of service attacks utilizing blockchain technology.