Abstract
The emergence of smart contract promotes the popularity of blockchain applications, leading the dramatically growth of Ethereum blockchain data size. The analysis on blockchain data is urgently needed for users, e.g., collecting statistics of tokens, monitoring the status of Ethereum blockchain. However, Ethereum could only support simple searches on blockchain data on account of its storage model. This paper proposes the EBTree, an index for Ethereum blockchain Data, and implements it based on Ethereum client (Geth1.8). With the properties of B+ tree, EBTree could support real-time top-k, range, equivalent search on Ethereum blockchain data. Besides, EBTree takes up relatively small s-torage space because it only stores the identifiers of blockchain data. Meanwhile, considering of the time intervals of mining block and synchronizing data from Ethereum network, the time of insertion in EBTree has little influence on the performance of Ethereum client. We conduct experiments to evaluate the performance of EBTree. According to the result of experiments, EBTree shows great performance on searches and insertion at low cost of storage.
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