> ## 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.

# B2 Network (B2) Overview

B2 Network (B2) RPC

Use Uniblock's JSON-RPC endpoint to access B2 Network (B2) with low-latency routing and a single API surface across providers.

## What is B2 Network?

B2 Network is an EVM-compatible mainnet. Its ticker symbol is `B2`.

## What is the B2 Network (B2) 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=223`. Include the JSON-RPC method and params in the request body.

## Supported networks

| Network    | Symbol | Type    | Chain ID |
| ---------- | ------ | ------- | -------- |
| B2 Network | `B2`   | Mainnet | `223`    |

## API reference

Browse the available method groups for this chain:

* [Debug](/reference/jsonrpc/223/debug/debug-account-range)
* [EVM](/reference/jsonrpc/223/evm/eth-accounts)