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Getting started as a validator on Spark testnet


To be a Spark validator, you first must see that you meet the pre-requirements:

  • You know what it means to be a Spark validator.
  • You have at least 100K SPARK tokens, or you will have an aggregated delegation of at least 100K SPARK tokens - To apply for SPARK test tokens, kindly send an email to and
  • You have an always-on hardware that meets the pre-requisites - How to run network nodes

How to become a Spark validator

To quickly become a validator, follow these steps:

Step 1: Download the `` script and an `.env` example file:

mkdir fuse-validator
cd fuse-validator
wget -O
chmod 755

Step 2: Run the script as a validator:



After running the script successfully, you will see your address on the health site. :::

Step 3: Stake and/or delegate!


To stake SPARK tokens, all you should do is send your SPARK tokens to the Spark Consensus contract address over the Spark Network from the validator address.


The Spark Consensus contract address: 0xC8c3a332f9e4CE6bfFFcf967026cB006Db2311c7 :::

The easiest way is to import your private key or key-store file to your favorite wallet (for example, Metamask), switch the network to Spark, and send the SPARK tokens (native testnet tokens) to the Consensus contract address.


You can find your key-store (containing your private key) and the password for the created account in:


$HOME/fusenet/config/pass.pwd :::


To delegate, send the SPARK tokens from any address to the Consensus contract address with the data: 0x5c19a95c000000000000000000000000<address without 0x>.



For the address: 0xb8ce4a040e8aa33bbe2de62e92851b7d7afd52de
Use: 0x5c19a95c000000000000000000000000b8ce4a040e8aa33bbe2de62e92851b7d7afd52de as the data.

5c19a95c is for the delegate(address) function signature.

b8ce4a040e8aa33bbe2de62e92851b7d7afd52dein this example, is an address you're delegating to (without the 0x prefix) :::

Step 4: Wait for one cycle (approximately 1 hour).

Wait until the next cycle is started.


You can see that you are validating both on the health site :::

For live support, contact us on Telegram or Discord. Good luck, and happy validating!