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Optimism Guides

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How to Build an ERC-20 Batch Swap dApp Using EIP-7702

This guide provides a practical implementation of EIP-7702. Learn step-by-step how to code batch transactions for swapping multiple ERC20 tokens at once.

Created August 8, 2025Intermediate
BaseEthereumOptimismdAppsEIP-7702EVMMarketplaceMarketplace Add-onViemWagmi

Building a Multi-Chain NFT Analytics App

This guide will show you how to build a multi-chain NFT analytics app.

Created January 8, 2024Intermediate
ArbitrumEthereumOptimismPolygonEVMMarketplace Add-OnNFT API With Cached MetadataNFTsReactTailwindTypeScript