Research on anonymous signature-based blockchain privacy and security focuses on cryptographic methods that enable users to authenticate transactions without revealing their identities, thereby preserving anonymity while ensuring data integrity. Techniques such as ring signatures, group signatures, and linkable ring signatures allow participants to sign transactions on behalf of a group, making it computationally infeasible to trace the signer, while still verifying the validity of the transaction. These methods enhance privacy in cryptocurrency systems, voting platforms, and other blockchain applications where confidentiality is critical. Research also addresses challenges such as preventing double-spending, ensuring unlinkability, and maintaining efficiency and scalability in large networks. Overall, anonymous signature-based approaches are essential for achieving robust privacy and security in blockchain ecosystems while supporting verifiable and accountable interactions.