That wraps up our tamper-proof Blockchain app. In an enterprise scenario, you can use this app to detect any tampering and then replace the files from a backup, such as a disaster recovery site, if required. This is a simple prototype, and I'm sure that you can figure out multiple applications for this workflow in the different business processes of a financial organization, such as managing digital copies of customers' private documents, confidential files and business information, transaction data, and so on.
We started this chapter with the intention of leveraging the tamper-proof property, or immutability, of blockchains to build an app that will notify us when a record-keeping or document storage system has been tampered with. To that end, we set up a private Hyperledger Fabric network with two nodes, two organizations, and one channel. On the network, we...