Configure a single-node network for testing

Configure a single-node network for testing

This document explains how to set up a single-node network for testing the whole Nine Chronicles.


  • planet CLI
  • NineChronicles.Headless.Executable
  • The latest CSV tables for Lib9c
    • This can be typically stored with the source code of Lib9c

Create a credential for testing

Run planet key create and follow the instructions. Store the key in a safe location if you expect to use the chain created to be used frequently.

Export the private key

Check the UUID of the key created in the step above from the command output, and run planet key export <UUID> to get a raw private key.

Crafting the genesis block

Creating the configuration

	"privateKey": "<PrivateKey>",
	"tablePath": "<TableCSV>",
	"goldDistributionPath": "<GoldDistCSV>",
	"adminAddress": "<ID>",
	"authorizedMinerConfig": {
		"validUntil": 1500000,
		"miners": [
  • ID: Paste the address of the key we created earlier.
  • PrivateKey: Paste the raw private key found in the step above.
  • TableCSV: The location of the CSV files used for Lib9c. It is typically located in Lib9c/TableCSV folder inside the Lib9c source tree.
  • GoldDistCSV: How to create this file will be described in the step below. After creating the file put the path in the configuration file.

After writing the file, store them in a JSON file.



This file determines the initial NCG distribution for launching the chain. Put ID without the 0x prefix to give your account some NCGs to get started.

Creating the genesis block itself

Run the NineChronicles.Headless.Executable.exe genesis <filename> with the filename set to the JSON file we created earlier. You should have a genesis-block and keys file when it completes.

Editing config.json

From the mainnet config.json you should edit these to run Nine Chronicles on your single-node network.

  • BlockchainStoreDirName: Choose a name that doesn’t conflict with other chains.
  • ConfigVersion: Put an arbitrarily large number would suffice.
  • GenesisBlockPath: Put the absolute path of the genesis-block file you created. You may put an URL instead.
  • PeerStrings, RemoteNodeList, SnapshotPaths: Replace them with a empty array [].
  • UseRemoteHeadless: false
  • Network: Something random which isn’t 9c-main.
  • NoMiner: false
  • HeadlessArgs: Append --network-type=default to enable mining.
  • DataProviderUrl: Omit.

Run the launcher.

Make sure you enable the mining in the settings.