> ## Documentation Index
> Fetch the complete documentation index at: https://docs.uniblock.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Polkadot (DOT) Overview

Polkadot (DOT) RPC

Use Uniblock's JSON-RPC endpoint to access Polkadot (DOT) with low-latency routing and a single API surface across providers.

## What is Polkadot?

Polkadot is a non-EVM mainnet. Its ticker symbol is `DOT`.

## What is the Polkadot (DOT) JSON-RPC API?

The JSON-RPC API is the standard interface for reading chain state, sending transactions, and interacting with smart contracts where supported.

## Making API requests

Send a POST request to `https://api.uniblock.dev/uni/v1/json-rpc?chainId=polkadot`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network  | Symbol | Type    | Chain ID   |
| -------- | ------ | ------- | ---------- |
| Polkadot | `DOT`  | Mainnet | `polkadot` |

## API reference

Browse the available method groups for this chain:

* [Polkadot](/reference/jsonrpc/polkadot/polkadot/author-pending-extrinsics)