Blockchain that requires permission

Platforms like Ethereum and EOS are all public blockchains, which means that anyone can choose to join the network. However, this is very unpopular for large companies that need their own blockchain infrastructure.

Think about the blockchain of a banking group.

Banks need to process sensitive data every day. From their internal transaction records to KYC data, there are many items that they simply cannot disclose to the public. In addition, only banks that have been reviewed by other banks in the network can enter the network.

In addition, as we have already introduced before, public blockchains are slow and have performance issues, which is also a big no-no for large companies.

Hyperledger allows these companies to create their own high-performance permissioned blockchains (aka blockchains in which each node must be reviewed before entering).

Interesting projects under Hyperledger
Perhaps the most interesting project in the Hyperledger series is IBM's Fabric. Blockchain Fabric is the basis for developing blockchain-based solutions and has a modular architecture.

Using different components of the Fabric blockchain, such as consensus and membership services can become plug and play. Fabric aims to provide a framework by which companies can combine their own independent blockchain networks and can quickly scale to more than 1,000 transactions per second.

In addition to Fabric, you have:

Sawtooth: A proven time consensus mechanism developed and used by Intel.
Iroha: An easy-to-use blockchain framework developed by several Japanese companies.
Burrow: Create a smart contract machine that requires permission along the Ethereum specification.