Paper Title
Blockchain-based Public Uprightness Check for Distributed Storage against Hesitating Inspectors

The network storage services achieve widespread adoption, security and performance issues are getting primary concerns, affecting the scalability of storage systems. Most of the cloud users purchase cloud storage "as pay as you go" consistent with their data volume. we propose a blockchain-based deduplicatable data auditing mechanism, to scale back the wastage of cloud storage resources and to perform uprightness checks for data. The prevailing system with a deduplication mechanism cannot solve the issues of security and storage, it requires high cost and therefore the reliance on trusted third parties. Hence our proposed system consists of a client-side data deduplication scheme supported a bilinear pairing cryptosystem to scale back the value and increase the safety for users and repair providers. The cloud service provider (CSP) doesn't allow the owner to upload the duplicate files but later to the authentication of the owner, CSP can allow the owner to form the updating of files that are uploaded within the cloud to avoid storage waste. The info outsourcing, and auditing processes also verified by the service provider to enhance the safety issues, and to watch the unreliable third-parties, a blockchain system is employed to record those behaviours of both entities Keywords - Network Storage, Deduplication, Data Auditing, Blockchain