# Paralink Node
Paralink Node is the backbone of the Paralink Network. Its responsible for sourcing information from real world data sources and across blockchains. Multiple data sources are supported, as well as aggregation and validation as defined in PQL pipelines.
# Supported data protocols
Currently HTTP/JSON, SQL (Postgres, MySQL, SQLite), GraphQL and IPFS are supported.
# Supported chains
Currently we support Ethereum and its derivatives (Binance Smart Chain, Tron, etc) and Polkadot Substrate based chains. Please refer to this table for up to date information on supported networks.
In this guide we will opt in for a premade Docker setup for a quick start. If you're interested in setting up all the components yourself, feel free to follow the installation and configuration guide.
Step 1: Clone the Paralink Node
Step 2: Setup the configuration directory
In this case we will just opt in for a
.paralink folder in our home directory for convenience.
HOME_MOUNT_DIR variable in
.env to point to your home directory. Then create a
.paralink folder inside the
# Base configuration
We will setup the basic Paralink Node without any additional plugins:
Add the networks you wish to interact with by modifying the
Example 1: Ethereum via Infura:
Example 2: Substrate chain (Plasm EVM) with its full-node running locally:
Example 3: Substrate chain with its full-node running locally:
Note: Storing credentials in plain text is not wise. We are working on a proper account management solution.
What are the
tracked_contracts? These are the oracles we will be servicing with our node. If you know the addresses of the oracles already simply paste them into
tracked_contracts. Otherwise you will have to deploy your own.
Check out the Paralink Oracle guide to see how to deploy EVM and WASM based oracles.
# Run the node
Once the node is fully configured with the networks, accounts and oracle contract addresses, we can start it up with the
This will also bring up the UI, available at
The node also exposes JSON-RPC endpoints for programmatic use. The API is available at
http://localhost:7425. Please check out our examples on how to use the API.