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Hyperledger has several revolutionary projects either with Active or Incubation status. This section covers three prominent and well-developed projects. These blockchain technologies include distributed ledger frameworks, smart contract engines, client libraries, graphical interfaces, utility libraries, and sample applications.

Fabric was the first blockchain implementation on Hyperledger. It has become the foundation for developing most blockchain applications. Fabric is unique within the blockchain ecosystem because it allows developers to use pieces of Fabric without committing to all the functionality — a truly tailored plug-and-play experience. Fabric also can create smart contracts called chaincode.

Fabric is a permissioned blockchain and does not utilize a cryptocurrency. This means that all the participants are known (as opposed to on a typical public blockchain where all the participants are anonymous by default). Fabric works like most blockchains in that it keeps a ledger of digital events. These events are structured as transactions and shared among the different participants. The transactions are executed without a cryptocurrency. (In contrast, a public blockchain uses its native cryptocurrency to pay the network to operate and to allow all the participants to remain anonymous.) To dive deeper into the subject of Fabric, go to https://trustindigitallife.eu/wp-content/uploads/2016/07/marko_vukolic.pdf.