# Genesis file

{% hint style="warning" %}
**TESTNET ONLY**\
To configure a full node for the **testnet** you need to use the following [seed ](https://docs.realio.network/testnet/public-testnet-setup/seed-nodes)nodes. If you are looking for mainnet seed nodes, please refer to [this ](https://docs.realio.network/testnet/public-testnet-setup/broken-reference)instead.
{% endhint %}

To connect to the testnet, you will need the corresponding genesis file of each testnet. Visit the [testnet repo](https://github.com/realiotech/testnets) and download the correct genesis file by running the following command.

```bash
# Download the existing genesis file for the testnet
# Replace <chain-id> with the id of the testnet you would like to join
curl https://raw.githubusercontent.com/realiotech/testnets/master/realionetwork_3300-1/genesis.json > $HOME/.realio-network/config/genesis.json
```