Signing a Message

Once a web application has connected to the ME Solana wallet, it can prompt users to sign a message, send transactions, and more. Signing is commonplace amongst many dApps, as it gives application owners the ability to verify ownership of the wallet. Signing a message does not require any transaction fees.

Let's take a look at what this looks like:

import { MagicEdenProvider } from "../types/types";

 * Prompts the user to sign a message using the MagicEden Provider object
 * @param {MagicEdenProvider} provider The MagicEdenProvider object
 * @param {string} message The message to sign
 * @returns {Promise<string>} A promise that resolves to the signed message
 * @throws {Error} If an unexpected error occurs while signing the message
export const signMessage = async (
  provider: MagicEdenProvider,
  message: string
): Promise<string> => {
  try {
    const encodedText = new TextEncoder().encode(message);
    const signedMessage = await provider.signMessage(encodedText);
    return signedMessage;
  } catch (error) {
    throw new Error("An unexpected error occured while signing the message.");

Signing a message is relatively simple and doesn't require any real interaction with web3 libraries. Check out the signMessage functionality in the demo app for a more well rounded implementation.