> ## Documentation Index
> Fetch the complete documentation index at: https://l2docs.whitechain.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Inspect Whitechain transactions, addresses, and verified contracts with Blockscout, and read chain data through its API.

<Note>
  Available on Testnet today. The Mainnet explorer is published at Mainnet launch.
</Note>

## Blockscout

Whitechain uses Blockscout as its block explorer. In a browser you can inspect transactions, addresses, blocks, and token transfers. For a verified contract you can read the source, call read methods, and submit write methods.

| Network            | Explorer                                                                 | Availability  |
| ------------------ | ------------------------------------------------------------------------ | ------------- |
| Whitechain Sepolia | [explorer.testnet.whitechain.io](https://explorer.testnet.whitechain.io) | Available now |
| Whitechain Mainnet | Published at Mainnet launch                                              | Pending       |

## Reading chain data with the API

Blockscout exposes an HTTP API that returns the same data the browser shows: balances, transactions, logs, token transfers, and verified contract details. It offers four interfaces, so you can use whichever matches your existing code.

| Interface   | Use it for                                                            |
| ----------- | --------------------------------------------------------------------- |
| REST API    | JSON requests for addresses, transactions, blocks, tokens, and stats. |
| ETH RPC API | Standard Ethereum JSON-RPC (`eth_` methods).                          |
| RPC API     | Etherscan-compatible endpoints (`module` and `action` parameters).    |
| GraphQL API | Single queries that return exactly the fields you request.            |

Full endpoints and parameters are in the API reference, by network.

| Network            | API reference                                                                              | Availability  |
| ------------------ | ------------------------------------------------------------------------------------------ | ------------- |
| Whitechain Sepolia | [explorer.testnet.whitechain.io/api-docs](https://explorer.testnet.whitechain.io/api-docs) | Available now |
| Whitechain Mainnet | Published at Mainnet launch                                                                | Pending       |

The API answers targeted lookups: one address, one transaction, or recent logs. For large custom queries across the full chain history, a dedicated indexer is the right tool. Whitechain indexer support is documented as providers integrate.

If a request fails, check whether the explorer and its API are running on the [status page](https://status.whitechain.io/).

## API access and rate limits

The Blockscout API is public and read-only, and needs no API key. It is rate limited per IP to protect the service, so batch related lookups and cache results where you can. For sustained or high-volume querying across the full chain history, run your own indexer or Blockscout instance rather than the public API.

## Related

* [Whitechain Sepolia](/learn/network/testnet)
* [Deploy a contract](/learn/get-started/deploy-a-contract)
* [Verify a proxy contract](/build/deploy/verify-proxy-contracts)
* [Blockscout API reference](https://explorer.testnet.whitechain.io/api-docs)
* [Service status](https://status.whitechain.io/)