Fig. 1.

An overview of MIStore. Step 1: Hospital sends a initialize-transaction to blockchain networl. Step 2: Hospital sends record-transactions to blockchain network. Step 2.5: The patient can verify whether his spending records are correctly computed by hospital. Step 3: Insurance company sends a query-transaction to query some result. Step 4: Servers read the query-transaction and related record-transactions from blockchain. Step 5: After locally computing, servers generate their responses and then send respond-transactions to blockchain network. Step 6: Insurance company collects respond-transactions and obtains t correct responses. Step 7: Insurance company recovers the result with the t correct responses