Hyperledger Fabric (HF) is a permissioned blockchain infrastructure, originally contributed by IBM and Digital Asset, providing a modular architecture with a delineation of roles between the nodes in the infrastructure, execution of Smart Contracts (called “chaincode” in Fabric), and configurable consensus and membership services.
A Fabric Network comprises “Peer nodes”, which execute chaincode, access ledger data, endorse transactions and interface with applications. “Orderer nodes”, which ensure the consistency of the blockchain and deliver the endorsed transactions to the peers of the network, and Membership Service Providers (MSPs), generally implemented as a Certificate Authority, managing X.509 certificates which are used to authenticate member identity and roles. Fabric is primarily aimed at integration projects, in which a Distributed Ledger Technology (DLT) is required, offering no user-facing services other than an SDK for Node.js, Java and Go.
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