If we consider the case of a private or consortium blockchain run by a group of companies, then certain aspects of privacy are clearly important.
For example, companies A, B, and C create a consortium blockchain. Although the network is closed to the outside world, any transactions between A and B are visible to company C, which could be undesirable for a number of reasons, especially if the three companies are in competition with each other. In addition to any business-to-business (B2B) interactions between the companies themselves, it's possible the network would involve some form of business-to-customer (B2C) interaction , meaning further types of confidentiality and privacy would be required.
Before we look in detail at this chapter's project, let's take a look at the currently available Ethereum-based business platforms...
