L2 ROLLUP · OP STACK

Block Explorer for Optimism

Ethernal is a hosted block explorer for Optimism (chain ID 10) that connects to your RPC endpoint and provides real-time transaction decoding, contract verification, and L2-to-L1 withdrawal tracking. Optimism is the original OP Stack chain built by OP Labs, powering the Superchain vision. Deploy a full-featured explorer in under 5 minutes.

Chain ID 10

Framework OP Stack

Parent Ethereum

Token ETH

Built for the Original OP Stack Chain

Optimism is where the OP Stack began. OP Labs built the rollup framework that now powers Base, Zora, Mode, and dozens of other chains. Ethernal monitors your OptimismPortal contract (0xbEb5Fc579115071764c7423A4f12eDde41f106Ed), tracks deposits from Ethereum L1, and follows withdrawals through the full 7-day challenge period with fault proof verification.

explorer.optimism.example/settings

OP Stack Configuration

L1 Parent Chain

Ethereum Mainnet

OptimismPortal Address

0xbEb5Fc579115071764c7423A4f12eDde41f106Ed

Batch Inbox Address

0xFF00000000000000000000000000000000000010

Create Configuration

explorer.optimism.example/withdrawal/7821

✓

Initiated

✓

State Proposed

Challenge Period

5d 12h remaining

Proven

Finalized

L2-to-L1 Withdrawal Lifecycle

Optimism pioneered the 7-day withdrawal challenge period that all OP Stack chains now use. With the Fault Proof upgrade (June 2024), withdrawals go through a new proving step before finalization. Ethernal tracks every phase: initiation on L2, state root proposal, challenge window, fault proof verification, and finalization on Ethereum L1.

Explorer Features

Transaction Decoding

Function names, parameters, and events decoded against verified ABIs

Contract Verification

Verify Solidity source, read and write contract state from the UI

Call Traces

Full execution traces with nested internal calls and revert reasons

Blob Batches

EIP-4844 blob and calldata batch monitoring with L1 links

Token Tracking

ERC-20, ERC-721, and ERC-1155 transfers and balance changes

Custom Domain

Your brand, your domain, full whitelabel on paid plans

How to Set Up an Optimism Block Explorer

Create a workspace

Connect your Optimism RPC

Paste your Optimism RPC endpoint. For Optimism mainnet, use https://mainnet.optimism.io or any provider like Alchemy, Infura, or QuickNode.

Configure OP Stack bridge monitoring

Enter your OptimismPortal (0xbEb5Fc579115071764c7423A4f12eDde41f106Ed) and Batch Inbox (0xFF00000000000000000000000000000000000010) addresses. Ethernal starts monitoring deposits, withdrawals, and batches automatically.

Go live

Point your custom domain (e.g. explorer.optimism.example) to your Ethernal workspace. Your explorer is live with transaction decoding, contract verification, and bridge tracking.

Optimism Explorer Options Compared

Teams building on Optimism typically choose between Optimistic Etherscan (the official explorer), Blockscout (open-source self-hosted), or Ethernal (hosted with OP Stack-native features).

FeatureEthernalEtherscan (OP)Blockscout

Custom domainYesNoYes (self-host)

Full whitelabelYesNoYes (self-host)

Withdrawal trackingBuilt-inLimitedRequires plugin

Fault proof monitoringBuilt-inPartialNo

Hosted (no infra)YesYesSelf-host

Setup time< 5 minN/A (public)Hours/days

Call tracesYesYesYes

Pricing for Optimism 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 Pricing

Frequently Asked Questions

How do I set up a block explorer for Optimism?

Create a workspace on Ethernal, paste your Optimism RPC endpoint (e.g. https://mainnet.optimism.io), configure the OP Stack bridge addresses (OptimismPortal and Batch Inbox), and point your custom domain. The whole process takes under 5 minutes.

What are Optimism fault proofs?

Fault proofs (shipped June 2024) replaced the previous centralized proposal mechanism. They allow anyone to challenge an incorrect state root posted to L1. Ethernal monitors the DisputeGameFactory and tracks each game through its lifecycle, giving you visibility into the security of your withdrawals.

Can I use Ethernal as an Optimistic Etherscan alternative?

Yes. If you are running a fork of Optimism or a custom OP Stack chain, Ethernal gives you a private, whitelabel explorer that you control. Unlike Optimistic Etherscan, you get your own domain, your own branding, and built-in OP Stack bridge monitoring.

What is the Superchain and how does Optimism relate to it?

The Superchain is OP Labs' vision for a network of interoperable OP Stack chains that share bridging, security, and a common communication layer. Optimism (chain ID 10) is the flagship chain. Ethernal supports all Superchain networks, including Base, Zora, and Mode.

Does Optimism use EIP-4844 blobs?

Yes. Since the Ethereum Dencun upgrade (March 2024), Optimism 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.

Get Started Free Read the Docs