Power Your Optimism Apps with Real-Time and Historical Blockchain Data

Optimism is a low-cost and lightning-fast Ethereum L2 blockchain.
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From $250/mo with SLA supportView Plans & Pricing
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Overview

GoldRush's Optimism APIs power everything from weekend side projects to billion-dollar apps.Get fast, accurate Optimism data with simple REST or WebSocket APIs. We index the full chain, from genesis to the latest block, covering balances, transactions, logs, pricing, and smart contract events — no node infrastructure required.
Built for:
Learning & experimentingBuild your first Optimism app
Trading & DeFiLaunch bots, dashboards, or analytics tools
Building at scaleEnterprise wallets, compliance, or infrastructure

Supported Products

Foundational API

Access structured historical data on any address using REST APIs.
Square BulletToken Balances
Square BulletTransactions and Wallet Activity
Square BulletSecurity and Approvals API

Foundational API

Chain nameChain IDBlock explorerBlocktime (seconds)TypeLast Synced Block Timestamp
optimism-mainnet
10
https://optimistic.etherscan.io/2MainnetLoading...
optimism-sepolia
11155420
https://optimism-sepolia.blockscout.com/2TestnetLoading...

Frequently Asked Questions

Yes, we support Optimism Sepolia Testnet.

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Support

Explore multiple support options! From FAQs for self-help to real-time interactions on Discord.

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Interested in our professional or enterprise plans? Contact our sales team to learn more.