Block Explorer for Base
Ethernal is a hosted block explorer for Base that connects to your RPC endpoint and provides real-time transaction decoding, contract verification, and L2-to-L1 withdrawal tracking. Deploy a full-featured explorer for your Base chain in under 5 minutes.
Chain ID 8453Built for Coinbase's L2
Base runs on the OP Stack with Coinbase as the sequencer. Ethernal understands this architecture natively: it monitors your OptimismPortal contract, tracks deposits from Ethereum L1, and follows withdrawals through the full 7-day challenge period. No extra configuration beyond pasting two contract addresses.
L2-to-L1 Withdrawal Tracking
Base withdrawals follow the standard OP Stack lifecycle: initiation on L2, state proposal, 7-day challenge window, proving, and finalization on Ethereum. Ethernal tracks each step in real time so your users always know exactly where their withdrawal stands.
Explorer Features
How to Set Up a Base Block Explorer
Create a workspace
Sign up at app.tryethernal.com and create a new workspace. Select "Public Explorer" as the type.
Connect your Base RPC
Paste your Base RPC endpoint. For Base mainnet, use https://mainnet.base.org or any provider like Alchemy, Infura, or QuickNode.
Configure OP Stack bridge monitoring
Enter your OptimismPortal (0x49048044D57e1C92A77f79988d21Fa8fAF36F97B) and Batch Inbox addresses. Ethernal starts monitoring deposits, withdrawals, and batches automatically.
Go live
Point your custom domain (e.g. explorer.base.example) to your Ethernal workspace. Your explorer is live with transaction decoding, contract verification, and bridge tracking.
Base Explorer Options Compared
Developers building on Base typically choose between Basescan (the official explorer from Etherscan), Blockscout (open-source self-hosted), or Ethernal (hosted with OP Stack-native features).
Pricing for Base Explorers
Start free with the Starter plan (ad-supported, includes contract verification, token tracking, and unlimited transactions). For custom domains and L1 explorer integration, the Team plan starts at $150/month. Full whitelabel with custom branding, status page, and 5M transactions included is available on the App Chain plan at $500/month.
View Full PricingFrequently Asked Questions
How do I set up a block explorer for Base?
Create a workspace on Ethernal, paste your Base RPC endpoint (e.g. https://mainnet.base.org), configure the OP Stack bridge addresses, and point your custom domain. The whole process takes under 5 minutes.
Does Ethernal support Base testnet (Base Sepolia)?
Yes. Ethernal works with any EVM-compatible chain, including Base Sepolia (chain ID 84532). Connect your testnet RPC and you get the same features as mainnet: transaction decoding, contract verification, and bridge monitoring.
Can I use Ethernal as a Basescan alternative for my own Base chain?
Yes. If you are running a fork of Base or a custom OP Stack chain, Ethernal gives you a private, whitelabel explorer that you control. Unlike Basescan, you get your own domain, your own branding, and built-in OP Stack bridge monitoring.
What is the difference between Ethernal and Blockscout for Base?
Ethernal is fully hosted, so you do not run any infrastructure. Blockscout is open-source and self-hosted, which gives you full control but requires DevOps resources. Ethernal also has native OP Stack support (withdrawal lifecycle tracking, deposit monitoring, batch/blob tracking) built in, while Blockscout requires separate plugins for some of these features.
Does Base use EIP-4844 blobs?
Yes. Since the Ethereum Dencun upgrade (March 2024), Base posts transaction data as EIP-4844 blobs instead of calldata, reducing L1 data costs by over 90%. Ethernal distinguishes between blob and calldata batches in the batch explorer view.
Ready to launch your explorer?
Deploy a fully-featured block explorer for your EVM chain in under 5 minutes. No credit card required.