verifyMessage

Action for verify that a message was signed by the provided address. It supports verifying messages that were signed by either a Smart Contract Account or Externally Owned Account.

Import

import { verifyMessage } from '@wagmi/core'

Usage

index.ts

import { verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: 'hello world',
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

Parameters

import { type VerifyMessageParameters } from '@wagmi/core'

address

Address

The Ethereum address that signed the original message.

index.ts

import { verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266', 
  message: 'hello world',
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

message

string | { raw: Hex | ByteArray }

The message to be verified.

By default, wagmi verifies the UTF-8 representation of the message.

index.ts

import { getAccount, verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: 'hello world', 
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

TIP

By default, viem signs the UTF-8 representation of the message. To sign the data representation of the message, you can use the raw attribute.

import { verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: { raw: '0x68656c6c6f20776f726c64' } 
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

signature

Hex | ByteArray

The signature that was generated by signing the message with the address's signer.

index.ts

import { verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: 'hello world',
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c', 
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

chainId

config['chains'][number]['id'] | undefined

Only used when verifying a message that was signed by a Smart Contract Account. The ID of chain to check if the contract was already deployed.

index.ts

import { verifyMessage } from '@wagmi/core'
import { mainnet } from '@wagmi/core/chains'
import { config } from './config'

await verifyMessage(config, {
  chainId: mainnet.id, 
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: 'hello world',
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

blockNumber

bigint | undefined

Only used when verifying a message that was signed by a Smart Contract Account. The block number to check if the contract was already deployed.

index.ts

import { verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  blockNumber: 12345678n, 
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: 'hello world',
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

blockTag

'latest' | 'earliest' | 'pending' | 'safe' | 'finalized' | undefined

Only used when verifying a message that was signed by a Smart Contract Account. The block tag to check if the contract was already deployed.

index.ts

import { verifyMessage } from '@wagmi/core'
import { config } from './config'

await verifyMessage(config, {
  blockTag: 'latest', 
  address: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
  message: 'hello world',
  signature: '0x66edc32e2ab001213321ab7d959a2207fcef5190cc9abb6da5b0d2a8a9af2d4d2b0700e2c317c4106f337fd934fbbb0bf62efc8811a78603b33a8265d3b8f8cb1c',
})

config.ts

import { http, createConfig } from '@wagmi/core'
import { mainnet, sepolia } from '@wagmi/core/chains'

export const config = createConfig({
  chains: [mainnet, sepolia],
  transports: {
    [mainnet.id]: http(),
    [sepolia.id]: http(),
  },
})

Return Type

import { type VerifyMessageReturnType } from '@wagmi/core'

boolean

Wheather the signed message is valid for the given address.

Error

import { type VerifyMessageErrorType } from '@wagmi/core'

TanStack Query

import {
  type verifyMessageData,
  type verifyMessageVariables,
  type verifyMessageMutate,
  type verifyMessageMutateAsync,
  verifyMessageMutationOptions,
} from '@wagmi/core/query'

Viem

• verifyMessage