Guide to message signing and verification

Signing and Verifying Messages

Base Documentation

Base

Products

Use Cases

A guide to building a next.js app on Base using OnchainKit

Build an App

Launch a Token

Deploy a Chain

Deploy Smart Contracts

Get Funded

A guide to leveraging AI tools effectively in your coding workflow.

AI Prompting

Prompt Library

Network Information

Fees

Ethereum vs. Base

Decentralizing Base Optimism

Base Contracts

Use Base

Deploy on Base

Run a Base Node

Bridge Tokens to Base

Base Products

Onchain Registry API

Node Providers

Block Explorers

Network Faucets

Oracles

Data Indexers

Cross-chain

Account Abstraction

Onramps

Avoid Malicious Flags

Bug Bounty

Report a Vulnerability

Overview

Quickstart

Recommend libraries

Base Gasless Campaign

Implement single sign-on functionality in Smart Wallet

Single Sign On

Configure and manage network settings in Smart Wallet

Networks

Implement and manage passkeys in Smart Wallet

Passkeys

Recovery

MagicSpend

Guide to signature verification in Smart Wallet

Signature Verification

Popups

Simulations

Gas Usage

Self Calls

Install

Setup

makeWeb3Provider

Upgrading from 3.x

CoinbaseWalletProvider

Guide to updating an existing app with Smart Wallet

Update Existing App

Sign In With Ethereum

Batch Transactions

Paymasters

ERC20 Paymasters

Templates

Troubleshoot

Telemetry

Build with AI

Lifecycle Status

Reach More Users with MiniKit

Tailwind CSS Integration

Theme Customization

Use Basenames

Checkout

Earn

Fund

Identity

Mint

Swap

Token

Transaction

Wallet

Verify if a chain ID is a valid Base or Base Sepolia chain ID

isBase

Report a Bug

Onboard Users

Accept Crypto Payments

Launch AI Agents

Launch Tokens

Onchain Social

Defi Your App

Go Gasless

Base Builder MCP

Showcase

Welcome

Introduction to Ethereum

Ethereum Dev Overview

Ethereum Applications

Gas Use in ETH Transactions

EVM Diagram

Guide to Base

Deploy with Fleek

Cross Chain Development

Client Side Development

Introduction to Solidity

Anatomy of a Smart Contract

Introduction to Foundry

Testing Smart Contracts

Exercise contracts

Get started

Features

Usage

SDK

Guides

Signing and Verifying Messages