Create an Amazon Managed Blockchain Network - Amazon Managed Blockchain

Create an Amazon Managed Blockchain Network

When a user in an AWS account creates a blockchain network on Amazon Managed Blockchain, they also create the first member in the network. This first member has no peer nodes associated with it until you create them. After you create the network and the first member, you can use that member to create an invitation proposal for other members in the same AWS account or in other AWS accounts. Any member can create an invitation proposal.

When you create the network and the first member in your AWS account, the network exists. However, transactions cannot be conducted and the ledger does not exist because there are no peer nodes. Do the following tasks to make your network functional:

Create a Managed Blockchain Network

You can create a Managed Blockchain network using the AWS Management Console, the AWS CLI, or the Managed Blockchain SDK CreateNetwork action.

  1. Open the Managed Blockchain console at

  2. Choose Create network.

  3. Under Blockchain framework:

    1. Select the blockchain framework to use. This tutorial is based on Hyperledger Fabric version 1.2.

    2. Select the Network edition to use. The network edition determines attributes of the network, such as the maximum number of members, nodes per member, and transaction throughput. Different editions have different rates associated with the membership. For more information, see Amazon Managed Blockchain Pricing.

  4. Enter a Network name and description.

  5. Under Voting Policy, choose the following:

    1. Enter the Approval threshold percentage along with the comparator, either Greater than or Greater than or equal to. For a proposal to pass, the Yes votes cast must meet this threshold before the vote duration expires.

    2. Enter the Proposal duration in hours. If enough votes are not cast within this duration to either approve or reject a proposal, the proposal status is EXPIRED, no further votes on this proposal are allowed, and the proposal does not pass.

  6. Choose Next, and then, under Create member, do the following to define the first member for the network, which you own:

    1. Enter a Member name that will be visible to all members and an optional Description.

    2. Under Hyperledger Fabric certificate authority (CA) configuration specify a username and password to be used as the administrator on the Hyperledger Fabric CA. Remember the user name and password. You need them later any time that you create users and resources that need to authenticate.

    3. Choose Create member and join network.

  7. Review Network options and Member options, and then choose Create network and member.

    The Networks list shows the name and Network ID of the network you created, with a Status of Creating. It may take a minute or two for Managed Blockchain to create your network, after which the Status is Active.

Use the create-network command as shown in the following example. Consider the following:

  • The example shows HYPERLEDGER_FABRIC as the Framework and 1.2 as the FrameworkVersion. The FrameworkConfiguration properties for --network-configuration and --member-configuration options may be different for other frameworks and versions.

  • The AdminPassword must be at least 8 characters long and no more than 32 characters. It must contain at least one uppercase letter, one lowercase letter, and one digit. It cannot have a single quote(‘), double quote(“), forward slash(/), backward slash(\), @, percent sign (%), or a space.

  • Remember the user name and password. You need them later any time you create users and resources that need to authenticate.

[ec2-user@ip-192-0-2-17 ~]$ aws managedblockchain create-network \ --cli-input-json '{"Name":"OurBlockchainNet", \ "Description":"OurBlockchainNetDesc", \ "Framework":"HYPERLEDGER_FABRIC","FrameworkVersion": "1.4", \ "FrameworkConfiguration": {"Fabric": {"Edition": "STARTER"}}, \ "VotingPolicy": {"ApprovalThresholdPolicy": {"ThresholdPercentage": 50, \ "ProposalDurationInHours": 24, \ "ThresholdComparator": "GREATER_THAN"}}, \ “MemberConfiguration”: {"Name":"org1", \ "Description":"Org1 first member of network",\ "FrameworkConfiguration":{"Fabric": {"AdminUsername":"MyAdminUser","AdminPassword":"Password123"}}, \ "LogPublishingConfiguration": {"Fabric":{"CaLogs":{\ "Cloudwatch": {"Enabled": true}}}}}}'

The command returns the Network ID and the Member ID, as shown in the following example: