After generating the certificate, the next step in the process is to generate the orderer genesis block. The configtxgen command allows users to create and inspect channel config. The configtxgen tool's output is largely controlled by the content of configtx.yaml, as follows:

Profiles:
    ICOrgsOrdererGenesis:
        Orderer:
            <<: *OrdererDefaults
            Organizations:
                - *OrdererOrg
        Consortiums:
            InsuranceClaimConsortium:
                Organizations:
                    - *Org1
                    - *Org2
                    - *Org3
    ICOrgsChannel:
        Consortium: InsuranceClaimConsortium
        Application:
            <<: *ApplicationDefaults
            Organizations:
                - *Org1
                - *Org2
                - *Org3
Organizations:
    - &OrdererOrg
        Name: OrdererOrg
        ID: OrdererMSP
        MSPDir: crypto-config/ordererOrganizations/ic.com/msp
    - &Org1
        Name: Org1MSP
        ID: Org1MSP
        MSPDir: crypto-config/peerOrganizations/org1.ic.com/msp
        AnchorPeers:
            - Host: peer0.org1.ic.com
              Port: 7051
    - &Org2
        Name: Org2MSP
        ID: Org2MSP
        MSPDir: crypto-config/peerOrganizations/org2.ic.com/msp
        AnchorPeers:
            - Host: peer0.org2.ic.com
              Port: 7051         
    - &Org3
        Name: Org3MSP
        ID: Org3MSP
        MSPDir: crypto-config/peerOrganizations/org3.ic.com/msp


        AnchorPeers:
            - Host: peer0.org3.ic.com
              Port: 7051              
Orderer: &OrdererDefaults
    OrdererType: solo
    Addresses:
        - orderer.ic.com:7050
    BatchTimeout: 2s
    BatchSize:
        MaxMessageCount: 10
        AbsoluteMaxBytes: 20 MB
        PreferredMaxBytes: 512 KB
    Kafka:
        Brokers:
            - 127.0.0.1:9092
    Organizations:
Application: &ApplicationDefaults


    Organizations:

We defined three organizations in the Organizations section of the configtx file; we specified each organization name, ID, MSPDir, and AnchorPeers. MSPDir describes cryptogen generated output MSP directories. AnchorPeers points to the peer node's host and port. It updates transactions in order to enable communication between peers of different organizations and finds all active participants of the channel, as follows:

configtxgen -profile ICOrgsOrdererGenesis -outputBlock ./channel-artifacts/genesis.block

An output similar to the following will be displayed on the console: