V²FS: A Verifiable Virtual Filesystem for Multi-Chain Query Authentication

Haixin Wang, Cheng Xu, Xiaojie Chen, Ce Zhang, Haibo Hu, Shikun Tian, Ying Yan, Jianliang Xu*

*Corresponding author for this work

Research output: Contribution to conferenceConference paperpeer-review

Abstract

The rise of decentralized finance (DeFi), Web 3.0, and other blockchain-based applications has led to an increased demand for on-chain data analysis across multiple blockchains. Conducting advanced queries, such as data aggregation and correlation analysis, is essential for gaining valuable insights in this context. However, multi-chain queries pose several challenges for the querying system, including compatibility with existing blockchains, supporting diverse query types, and ensuring the integrity of query results. To tackle these challenges, we propose a novel paradigm called verifiable virtual filesystem (V²FS). V²FS extends the POSIX I/O interface, shifting the focus from verifying computation to verifying data. This innovative approach empowers query clients to leverage an off-the-shelf database engine to evaluate queries using verifiable data retrieved from an indexing service provider (ISP). Our solution ensures strong integrity guarantees and can be smoothly integrated with existing database engines to support various query types. To achieve blockchain compatibility, we utilize the DCert framework to certify blocks from different blockchains, making our system applicable to various blockchain systems. Furthermore, we propose cache-based algorithms and a bloom filter-integrated algorithm to optimize query performance and minimize network communication costs. Security analysis and empirical study validate the effectiveness and efficiency of the proposed system.
Original languageEnglish
Number of pages13
Publication statusPublished - May 2024
Event40th IEEE International Conference on Data Engineering, ICDE 2024 - Kinepolis Jaarbeurs theater, Utrecht, Netherlands
Duration: 13 May 202417 May 2024
https://icde2024.github.io/papers.html (Link to conference's schedule )
https://icde2024.github.io/index.html (Conference's website)
https://ieeexplore.ieee.org/xpl/conhome/10597630/proceeding (Conference's proceeding)

Conference

Conference40th IEEE International Conference on Data Engineering, ICDE 2024
Country/TerritoryNetherlands
CityUtrecht
Period13/05/2417/05/24
Internet address

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