Conventional data storage and management systems have several disadvantages such as high costs, single point of failure, and lack of transparency. By offering a decentralized, secure, and transparent system, blockchain technology has emerged as a viable remedy for these issues. Way of storing and managing data. However, the energy consumption associated with blockchain technology has raised concerns about its sustainability. In this system, proposed a sustainable diligent blockchain for conventional storage that combines the benefits of blockchain technology with diligent storage to create a sustainable and efficient storage solution. We introduce a proof-of-stake consensus mechanism and the use of sustainable energy sources to power the network. The proposed system was evaluated on a test webpage network and achieved a high level of security, transparency, and sustainability