zk-Oracle: Trusted Off-Chain Compute and Storage for Decentralized Applications
2023 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)(2023)
摘要
Blockchain and Decentralized Applications (DApps) are increasingly important for creating trust and transparency in data storage and computation. However, on-chain transactions are often costly and slow. To overcome this challenge, off-chain nodes can be used to store and compute data. We tackle this challenge by introducing zk-Oracle, which provides an efficient and trusted compute and storage off-chain. zk-Oracle builds on zero-knowledge proof (zk-proof for short) technologies to achieve two goals. First, the computation of data structures from raw data and the corresponding proof generation is improved in terms of performance. Second, the verification on-chain is inexpensive and fast. Our experiments show that we can speed up zk-proof generation by up to 550 times faster than the baseline method.
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关键词
zk-SNARK,blockchain,IoT
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