基于区块链的数据溯源可信查询方法

针对区块链数据溯源系统中轻节点验证溯源信息时面临的存储问题,引入一种优化Merkle树动态追加性能的数据结构Merkle山脉(Merkle mountain range,MMR),将区块链上完整的区块头存入MMR;提出一种溯源数据高效可信的验证方法,降低了区块包含证明所需信息的大小.在此基础上,设计了一种基于区块链的数...

Trusted Query Method for Data Provenance Based on Blockchain

In order to reduce the storages needed in verifying provenance information of light clients in blockchain data provenance system, this paper firstly introduces a data structure titled by Merkle mountain range (MMR), which optimizes the dynamic append performance of Merkle trees and stores all block headers on blockchain in the MMR. Then we propose an efficient and reliable verification method for data provenance to reduce the size of the proof information required for the proof of the block contain. On this basis, a scheme of data provenance system based on block chain is designed, which encapsulates the common modules required for data provenance and opens them to the provenance application through interfaces. This scheme enables light clients to effectively verify whether the provenance information is contained in the block chain as long as they keep the information of the latest block in storage.