Research on advanced cryptography algorithms in blockchain focuses on enhancing the security, privacy, and efficiency of decentralized systems. Modern blockchain implementations leverage techniques such as zero-knowledge proofs, homomorphic encryption, secure multi-party computation, and elliptic-curve cryptography to protect transaction data, ensure confidentiality, and enable trustless verification. These algorithms allow participants to validate transactions without revealing sensitive information, resist tampering, and maintain data integrity across distributed networks. Additionally, research explores lightweight and post-quantum cryptographic methods to future-proof blockchain systems against emerging computational threats. Overall, the development and integration of advanced cryptographic algorithms are critical for strengthening blockchain security, scalability, and resilience in diverse applications ranging from finance to healthcare and supply chain management.