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docs: update block-explorers.mdx with updated table, tasks, and tips #1464

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---
title: Block Explorers
description: Documentation for block explorers for the Base network.
---

Base supports multiple block explorers. Use them to inspect transactions, verify contracts, view balances, debug interactions, and analyze onchain activity.

## Recommended Explorers

| Explorer | Best For | Mainnet | Sepolia Testnet | Key Features |
|----------|----------|---------|-----------------|--------------|
| [Basescan (Etherscan)](https://basescan.org) | General use, contract verification, token analytics | [basescan.org](https://basescan.org) | [sepolia.basescan.org](https://sepolia.basescan.org) | Search by address/tx/token, source code verification, L1↔L2 tx views, API |
| [Blockscout](https://base.blockscout.com) | Detailed traces, debugging | [base.blockscout.com](https://base.blockscout.com) | Available | Smart contract interaction, internal txs, rich logs |
| [Arkham](https://platform.arkhamintelligence.com/) | Onchain intelligence & entity labeling | Supports Base | — | Entity tracking, fund flow analysis |
| [DexGuru](https://dex.guru/) | DEX-focused debugging | Supports Base | — | Interactive traces, logs visualization, balances |
| [L2scan](https://l2scan.co/) | L2 network analysis | Supports Base | Supports Base | User-friendly tx history, account balances |
| [OKLink](https://www.oklink.com/) | Multi-chain monitoring, labeled addresses | Supports Base | — | Real-time streams, risk labels, large tx tracking |
| [Tenderly](https://tenderly.co/) | Simulation, gas optimization, debugging | Supports Base | Supports Base | Granular visibility, bug spotting, simulations |

**Tip**: Bookmark both Mainnet and Sepolia versions. Most explorers auto-detect the network when connected via wallet.

## Common Tasks

### View a Transaction
1. Copy the transaction hash from your wallet or dApp.
2. Paste it into any explorer’s search bar.
3. Review status, gas usage, logs, internal calls, and L1/L2 bridging details.

### Verify a Smart Contract
- Navigate to the contract address.
- Go to the **Contract** tab → **Verify and Publish**.
- Upload source code, match compiler version, and provide constructor arguments.

<Note>
Verify contracts before production use for transparency and user trust.
</Note>

### Advanced Debugging
- Use **Blockscout** or **Tenderly** for detailed traces and simulations.
- Look for Flashblocks indicators in supported explorers for near-instant visibility.

## Troubleshooting

- **Transaction not found**: Confirm the correct network (Chain ID 8453 for Mainnet, 84532 for Sepolia) and wait a few seconds for propagation. See [network information](/base-chain/network-information).
- **Verification issues**: Double-check compiler settings and constructor args (ABI-encode if needed).
- **Need API access**: Most explorers provide free tiers for scripting and monitoring.