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Azure BlockChain Workbench OffChain Data Manipulation RRS feed

  • Question

  • Azure BlockChain Workbench /REST API gets contracts data from offchain SQL Database. When I manipulate the block or transaction in the sql tables, how can i sure that the offchain values same as the blockchain service values?
    Saturday, August 24, 2019 8:03 AM

Answers

  • Hi,

    If you are concerned about manipulation of values in the database, you can pick a sampling of values and cross-reference them using a web3 client pointed at your blockchain.

    Workbench does not ship with such a service since it simply shifts the burden of trust (how would I know the service itself was acting honestly?), so if you have such a concern it is best to do the verification yourself.

    Thanks,


    Microsoft Azure Blockchain Team

    Wednesday, August 28, 2019 5:40 PM

All replies

  • Hi you might want to you read Smart Contract integration patterns if you haven't yet?
    Tuesday, August 27, 2019 12:50 AM
  •    Hi was the referenced document helpful? 

    Okay Akdeniz

        

    Wednesday, August 28, 2019 1:07 AM
  • Hi,

    If you are concerned about manipulation of values in the database, you can pick a sampling of values and cross-reference them using a web3 client pointed at your blockchain.

    Workbench does not ship with such a service since it simply shifts the burden of trust (how would I know the service itself was acting honestly?), so if you have such a concern it is best to do the verification yourself.

    Thanks,


    Microsoft Azure Blockchain Team

    Wednesday, August 28, 2019 5:40 PM
  •  Hi Okay Akdeniz just wanted to check if the responses were useful or if you still need help?
    Friday, August 30, 2019 12:54 AM