Participants

What is a Participant?

Each party of the application is hosted on a Participant Node. The Participant Node stores the party's unique projection and history of the shared system of record. Participant Nodes synchronize by running a consensus protocol (the Canton Protocol) between them, sending encrypted messages through Domains that provide guaranteed delivery and order consistency.

For more information about Domains, see Domains.

How Do I Create a Participant?

To create a Participant, go to the Participants tab and click the Create button to open a side window.

1

Provide a Participant name

Enter a unique Participant name (required).

2

Fill in the main settings

Using a predefined image is recommended for compatibility. If you want to use an image from a private repository, specify an imagePullSecret.

• Choose participant image

• Choose DAR files to upload

• Enable Navigator if required

• Enable Daemon if required

• Resources allocation:

  • Requested CPU — Guaranteed CPU resources that will be allocated

  • CPU limit — Maximum CPU resources that will be allocated

  • Requested memory (MB) — Guaranteed amount of RAM that will be allocated

  • Memory limit (MB) — Maximum amount of RAM that can be allocated

  • Storage size

• You can add custom environment variables if needed

3

Fill in Topology

• Enable Embedded Topology if needed

• Topology:

  • Choose between form or raw view topology

  • Choose Admin Port

  • Choose Public port

  • Choose Storage type:

Memory

No additional configuration required.

PostgreSQL

External

• Enable Authorization Service if needed

4

Bootstrap (optional)

Provide bootstrap commands if needed.

How Do I Connect a Participant to a Domain?

After the participant is created, click the Connect to domain button to open a side window.

Select either a domain available in this Catalyst Canton console, or connect to any external domain by providing the full domain URL.

How Do I Upload DAR Files to a Participant?

After the participant is created, click the Upload DAR button to open a side window.

Select one or multiple DAR files to upload to the participant. DAR files can be added to the console through the Collections tab.

Parties

A Party is created by default once a Participant is connected to a Domain. However, Catalyst Blockchain Manager allows you to add additional parties on a participant node.

Add Party

In the Participants menu, under the Parties section, click Add party, set the name, and click Save.

User Management

Catalyst Blockchain Manager allows you to manage the user accounts that interact as part of a Party.

Create a User

In the Participants menu, under the Users section, click Create user and select the Primary Party this new user belongs to.

If the new User has admin rights, select the ParticipantAdmin checkbox. Otherwise, select the type of right for which party:

• CanActAs — The User can interact as the selected Party

• CanReadAs — The User has read-only rights but cannot interact on behalf of the Party

Manage Users

Navigate to the Participants menu, under the Users section, and select the action to perform from the right-hand menu column.