Abstract Blockchain technology has the characteristics of decentralization and tamper resistance, which can store data safely reduce cost trust effectively. However, existing blockchain system weak performance in management, only supports traversal queries with transaction hashes as keywords. The query method based on account trace chain (ATTC) improves efficiency historical transactions accoun...

Blockchain has become increasingly popular for data management in recent years. However, the existing blockchain systems lack efficient semantic queries, particularly keyword queries. To address this issue, we propose a learned-index-based query architecture on blockchain. First, our records semantics information to support Second, establish lookup table index among blocks and block-level recur...