Block explorers

Learn about different block explorers you can use to interact with contracts and view transaction history for OP Mainnet and OP Sepolia.

Blockscout

We have a Blockscout explorer for OP Mainnet and OP Sepolia. It includes:

• Verified testnet contract source code, along with the ability to interact with it
• Detailed testnet transaction information

Blockscout also has some OP-Mainnet-specific features:

• An interactive list of deposits (L1-L2)
• An interactive list of withdrawals (L2-L1)
• Transaction batches
• App marketplace
• And much more!

Etherscan

We have Etherscan explorers for the OP Mainnet and the OP Sepolia. Etherscan has lots of tools to help you debug transactions.

Optimistic Etherscan has all the tools you expect from Etherscan, such as:

• Verified contract source code, along with the ability to interact with it
• Detailed transaction information
• And everything else you might find on Etherscan!

It’s also got some OP-Mainnet-specific features:

• A list of L1-to-L2 transactions
• A list of L2-to-L1 transactions
• A tool for finalizing L2-to-L1 transactions
• And more! Just check it out and click around to find all of the available features.

Superscan by Routescan

Superscan is the dev-focused Superchain explorer unified at the ecosystem level, powered by Routescan. On the Superscan, developers can quickly glance at transactions, blocks, addresses, deployed contracts and more across the Superchain in unified pages.

The Superscan currently includes:

• Mainnet - OP Mainnet, Base, Zora, Mode, Cyber, Orderly, Fraxtal, Public Goods Network
• Testnet - Zora, Mode, Orderly, Fraxtal

Tenderly

Tenderly’s Developer Explorer for OP Mainnet and OP Sepolia allows you to monitor and inspect transactions, providing a high level of detail and additional tools:

Tenderly Developer Explorer lets you:

• Keep track of specific contracts and their transactions
• Inspect transaction execution with fully decoded transaction trace
• Debug failing and simulate correct transactions before sending them on-chain
• Evaluate function-level gas usage for any transaction
• Set up Alerts to monitor interactions, access control, asset transfers, and contracts’ state changes
• Create a Virtual TestNet from a specific OP Mainnet or OP Chain transaction for systematic research

Access to pre-regenesis history

Because of our final regenesis on 11 November 2021, older transactions are not part of the current blockchain and do not appear on Etherscan. However, you can access transaction history between 23 June 2021 and the final regenesis using a number of different tools. For detailed instructions, see Regenesis History.

Next Steps

• Looking for other developer tools? See developer tools overview to explore more options!