BLOCKCHAIN

A Fabric permissioned blockchain network is a technical infrastructure that provides ledger services to application consumers and administrators. In most cases, multiple organizations come together as a consortium to form the network and their permissions are determined by a set of policies that are agreed to by the consortium when the network is originally configured. Moreover, network policies

can change over time subject to the agreement of the organizations in the consortium.

Blockchain Development Advisory & Consulting

Smart Contracts

Smart contract chaincode must be installed and instantiated on a peer in order for a client application to be able to invoke the smart contract. Client applications are the only place outside the network where transaction proposals are generated. When a transaction is proposed by a client application, the smart contract is invoked on the endorsing peers who simulate the execution of the smart contract against their copy of the ledger and send the proposal response (endorsement) back to the client application. The client application assembles these responses into a transaction and broadcasts it to the ordering service.