  The advent of Web 3.0, underpinned by blockchain technologies, promises to
transform the internet's landscape by empowering individuals with decentralized
control over their data. However, this evolution brings unique security
challenges that need to be addressed. This paper explores these complexities,
focusing on enhancing privacy and anonymous auditing within blockchain
structures. We present the architecture of Web 3.0 based on the blockchain,
providing a clear perspective on its workflow and security mechanisms. A
security protocol for Web 3.0 systems, employing privacy-preserving techniques
and anonymous auditing during runtime, is proposed. Key components of our
solution include the integration of privacy-enhancing techniques and the
utilization of Tor for anonymous auditing. We discuss related work and propose
a framework that meets these new security requirements. Lastly, we offer an
evaluation and comparison of our model to existing methods. This research
contributes towards the foundational understanding of Web 3.0's secure
structure and offers a pathway towards secure and privacy-preserving digital
interactions in this novel internet landscape.
