Personal Trajectory Verification Based on Blockchain and Zero-knowledge Proof

With the development of location-based services based on smart terminals and positioning technologies, location forgery and privacy leakage become an important issue, making it difficult for the existing methods of proof of location to guarantee the accuracy, authenticity and privacy of user trajectory information. By using the decentralized, non-tamperable and traceable characteristics of blockchain and combining with zero-knowledge proof method, this paper proposes a personal trajectory verification algorithm to provide a solution to solve the limitation of traditional location proof method for trajectory verification problems.