# Block Explorers (/docs/unichain/tools/block-explorers)

Explore blocks, transactions, and contracts on Unichain with supported block explorers.

## Uniscan
Uniscan provides tools to help you view transaction data and debug smart contracts:

* Search by address, transaction hash, batch, or token
* View, verify, and interact with smart contract source code
* View detailed transaction information
* View L1-to-L2 and L2-to-L1 transactions
* Visit the [Uniscan Docs](https://docs.uniscan.xyz/) for details

## Supported networks
* [Uniscan](https://uniscan.xyz/)
* [Uniscan Sepolia](https://sepolia.uniscan.xyz/)

## Blockscout
Blockscout provides tools to help you view transaction data, interact and debug smart contracts, and see chain analytics:

* Search by address, transaction hash, batch, or token
* View, verify, and interact with smart contract source code
* View detailed transaction information
* View L1-to-L2 and L2-to-L1 transactions
* Visit the [Blockscout Docs](https://docs.blockscout.com/) for details

## Supported networks
* [Unichain Mainnet](https://unichain.blockscout.com/)
* [Unichain Sepolia](https://unichain-sepolia.blockscout.com/)

## PRO API
Blockscout's PRO API delivers fast, reliable access to optimized Unichain data.

* 5 RPS and up to 5,000 calls/day on the free tier
* Higher RPS and call allowances on paid tiers
* Manage API keys and view usage metrics on the [Developer portal](https://dev.blockscout.com)
* Visit the [PRO API docs](https://docs.blockscout.com/devs/apis/pro-api) for details