Because transactions listed on a Private BlockChain are private, they ensure an extra layer of confidentiality. Because Private BlockChain have restricted access, and nodes must be specifically selected to view and participate in a network, some argue that Private BlockChain grants more confidentiality to users. Private BlockChain are considered the most realistic way to adapt BlockChain technology into a business process in order to maintain a high level of confidentiality, however there are some disadvantages.
For example, Private BlockChain delegate specific factors to verify blocks and transactions. Although some argue that this provides efficiency and security, there are concerns that Private BlockChain are not truly decentralized because the verification of transactions and control are put back into the hands of a central entity.