At the heart of every blockchain is a protocol that agrees to the order and security of transactions in the next block. Here’s how to maintain the integrity of the chain.
Permissioned blockchains are growing in popularity as businesses attempt to cash in on the blockchain trend while keeping a firm hand on the tiller. Contrary to their non-permissioned cousins (such as bitcoin or Ethereum), permissioned blockchains are controlled by an authority that grants permission to every node that participates.
If you’ve read news stories recently about innovative uses of blockchain, the chances are they were based on permissioned blockchains. In these cases, the authority figure was probably a consortium of companies or a single organization.