Anonymous transaction amount verification system based on zero knowledge range proof

The security and privacy of blockchain data have become critical research challeSimilarly, the full-function accounting node verifies the validitynges. While numerous approaches have been proposed to address these concerns, many existing schemes suffer from high computational complexity or excessive verification latency. To bridge this gap, this paper presents a secure and privacy-preserving blockchain data transaction verification system. By integrating the Paillier cryptosystem with a zero-knowledge range proof protocol, the proposed system ensures the confidentiality of transaction amounts and participant identities, simultaneously achieving strong anonymity and conditional traceability for users. Moreover, fully functional accounting nodes support efficient ciphertext-domain balance updates, eliminating the need for decryption during accounting operations. Experimental evaluation confirms the practicality and high performance of the proposed system.