Hybrid indexing scheme supporting blockchain transaction tracing

To solve the problem of transaction description and traceability of digital assets, a novel digital asset transaction model based on blockchain and a hybrid indexing scheme based on transaction chain were presented. For the complex transaction pattern of digital assets, the transaction model proposed the standardized operation structure; to trace the transaction efficiently, an improved account status tree model was presented on the basis of Ethereum's account model, which could maintain the latest transaction state for each account and embed index data into the transaction record data. The fine-grained indexing scheme guaranteed the integrality and traceability of recorded data and optimized the business process of transaction traceability. The experimental results showed that the proposed solution could effectively improve the query performance under different settings of transaction volumes. © 2019, Editorial Department of CIMS. All right reserved.