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Annotated, copy-pasteable examples in Solidity, Vyper, Rust, and JavaScript.

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Curated public RPC endpoints for every major blockchain network.

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Quick-start guides for ethers.js, viem, web3.js, and more.

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Programmatic access to the Blockchain Library knowledge base.

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Featured Code Snippets

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javascriptethereumbeginner

Read ETH Balance with ethers.js

Query an Ethereum address's native ETH balance using ethers.js v6.

integration
solidityethereumintermediate

ERC-20 Token Contract

A minimal, standard-compliant ERC-20 fungible token implementation in Solidity.

tokens1
solidityethereumintermediate

ERC-721 NFT Contract

A simple non-fungible token (NFT) contract with minting functionality.

nft