> ## 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.

# Bitlayer (BTR) Overview

Bitlayer (BTR) RPC

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

## What is Bitlayer?

Bitlayer is an EVM-compatible mainnet. Its ticker symbol is `BTR`.

## What is the Bitlayer (BTR) 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=200901`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network  | Symbol | Type    | Chain ID |
| -------- | ------ | ------- | -------- |
| Bitlayer | `BTR`  | Mainnet | `200901` |

## API reference

Browse the available method groups for this chain:

* [Debug](/reference/jsonrpc-docs/200901/debug/debug-account-range)
* [EVM](/reference/jsonrpc-docs/200901/evm/eth-accounts)