This chapter provides an overview of the crucial role played by blockchain technology in securing healthcare metaverse by ensuring the privacy and integrity of sensitive medical data. Techniques like zero-knowledge proofs and commitment schemes empower patients to control their data while enabling secure data sharing. Secure multi-party computation further enhances security by facilitating joint computations without revealing individual data fragments. However, challenges remain in implementing these technologies effectively. Scalability issues arise from the vast amount of data generated in the metaverse, requiring efficient processing and storage solutions. Existing cryptographic techniques, while robust, might not be future-proof against advancements like quantum computing. By prioritizing data security and privacy, the metaverse can evolve into a reliable and accessible digital environment for healthcare delivery. By embracing innovation, fostering collaboration, and upholding patient autonomy, we can create a future where healthcare is personalized and accessible, for all.