Abstract
The emergence of Hyperledger provides a variety of feasible and feature-rich solutions for smart contracts on the blockchain, promoting the popularity and spread of blockchain systems. Similar with Bitcoin and Ethereum, Hyperledger has accelerated the dramatic increasement in the scale of blockchain data. Applications based on blockchain systems need to quickly retrieve transaction data in blocks while processing and analyzing data. Currently, Hyperledger Fabric only provides limited retrieval functions, such as searching for blocks based on single fields like block height, block hash, and transaction hash. Such retrieval functions cannot meet the needs of current blockchain applications. In this paper, we propose a general blockchain data storage and retrieval system B-Store for the blockchain platform. B-Store divides the blockchain data into data segment and index segment. The index segment uses B+ tree as the underlying data structure, and provides two retrieval options: block retrieval and transaction retrieval. B-Store supports single-field or multi-field equivalent retrieval, range retrieval and top-k retrieval on block data and transaction records. We compare two blockchain storage solutions, Hyperledger Fabric and B-Store. The final experimental results show that B-Store achieves low additional storage and performance overhead when adding new blocks, but provides rich and efficient retrieval functions for blocks and transactions.
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Acknowledgment
This work is supported by the National Natural Science Foundation of China (62072086, 62172082, 62072084), the Fundamental Research Funds for the central Universities (N2116008), the Open Project Fund of Neusoft Corporation (NCBETOP2002).
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Gao, X., Nie, T., Shen, D., Kou, Y., He, G., Xu, S. (2022). B-store, a General Block Storage and Retrieval System for Blockchain. In: Zhao, X., Yang, S., Wang, X., Li, J. (eds) Web Information Systems and Applications. WISA 2022. Lecture Notes in Computer Science, vol 13579. Springer, Cham. https://doi.org/10.1007/978-3-031-20309-1_59
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DOI: https://doi.org/10.1007/978-3-031-20309-1_59
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