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InfoResearchPeer-reviewed
ContractDB: Secure and Efficient Integration of Large Legacy Data With Blockchain DApps
- Published
- Record updated
Summary
ContractDB is a framework that integrates external verifiable databases (VDBs) with blockchain DApps to offload data storage and verifiable query processing from the chain. The authors propose a VDB design using authenticated dictionaries and authenticated set operations, plus a disputable update mechanism that uses public verification to lower update costs. In evaluations, ContractDB verified results of a 6-condition conjunction query on a 2^20-line table within 2.4 million gas, while storing the same data in contracts required over 36 billion gas.