App Wallet

Wallet for building transactions in your applications.

Whether you are building a minting script, or an application that requires multi-signature, AppWallet is all you need to get started.

In this section, you will learn how to initialize a wallet and use it to sign transactions.

Generate Wallet

You can generate deterministic keys based on the Bitcoin BIP39. These mnemonic phrases allow you to recover your wallet.

Once you have your mnemonic phrase, you can use it to generate your deterministic keys. See Load AppWallet in the following section on loading a mnemonic phrase. It will typically generate a series of private keys and corresponding public keys, which you can use to manage your cryptocurrencies.

import { AppWallet } from '@meshsdk/core';

const mnemonic = AppWallet.brew();

Load AppWallet

With Mesh, you can initialize a wallet with:

  • mnemonic phrases
  • Cardano CLI generated keys
  • private keys

Lets import a blockchain provider:

import { BlockfrostProvider } from '@meshsdk/core';

const blockchainProvider = new BlockfrostProvider('<BLOCKFROST_API_KEY>');

Mnemonic phrases

We can load wallet with mnemonic phrases:

import { AppWallet } from '@meshsdk/core';

const wallet = new AppWallet({
  networkId: 0,
  fetcher: blockchainProvider,
  submitter: blockchainProvider,
  key: {
    type: 'mnemonic',
    words: ["solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution","solution"],
  },
});

With the wallet loaded, you can sign transactions, we will see how to do this in the next section, for now lets get the wallet's address:

const address = wallet.getPaymentAddress();

Cardano CLI generated skeys

We can load wallet with CLI generated keys by providing the skey generated by Cardano CLI. There are two files generated by Cardano CLI, by default it is named signing.skey and stake.skey. Opening the signing.skey file it should contains:

{
  "type": "PaymentSigningKeyShelley_ed25519",
  "description": "Payment Signing Key",
  "cborHex": "5820aaca553a7b95b38b5d9b82a5daa7a27ac8e34f3cf27152a978f4576520dd6503"
}

We can get the cborHex from the signing.skey file, and load wallet with Cardano CLI generated skeys. Stake key is optional, but without it, you cannot sign staking transactions.

import { AppWallet } from '@meshsdk/core';

const wallet = new AppWallet({
  networkId: 0,
  fetcher: blockchainProvider,
  submitter: blockchainProvider,
  key: {
    type: 'cli',
    payment: '5820aaca553a7b95b38b5d9b82a5daa7a27ac8e34f3cf27152a978f4576520dd6503',
    stake: '582097c458f19a3111c3b965220b1bef7d548fd75bc140a7f0a4f080e03cce604f0e',
  },
});

Private keys

We can load wallet with private keys:

import { AppWallet } from '@meshsdk/core';

const wallet = new AppWallet({
  networkId: 0,
  fetcher: blockchainProvider,
  submitter: blockchainProvider,
  key: {
    type: 'root',
    bech32: 'xprv1cqa46gk29plgkg98upclnjv5t425fcpl4rgf9mq2txdxuga7jfq5shk7np6l55nj00sl3m4syzna3uwgrwppdm0azgy9d8zahyf32s62klfyhe0ayyxkc7x92nv4s77fa0v25tufk9tnv7x6dgexe9kdz5gpeqgu',
  },
});
Load wallet with mnemonic phrases

Provide the mnemonic phrases to recover your wallet. After initializing the AppWallet, we will get the wallet's payment address.

Note: Mesh Playground is safe if you really want to recover your Mainnet wallet, but recovering your testing wallet on Mesh Playground is recommended.

Create & sign transactions

We can create transactions and sign it with the wallet. For this demo, we will mint an asset and send it to an address. Go to Transaction to learn more about building transactions.

import { Transaction, ForgeScript } from '@meshsdk/core';
import type { Mint, AssetMetadata } from '@meshsdk/core';

const walletAddress = wallet.getPaymentAddress();
const forgingScript = ForgeScript.withOneSignature(walletAddress);

const assetMetadata1: AssetMetadata = {
  name: 'Mesh Token',
  image: 'ipfs://QmRzicpReutwCkM6aotuKjErFCUD213DpwPq6ByuzMJaua',
  mediaType: 'image/jpg',
  description: 'This NFT is minted by Mesh (https://meshjs.dev/).',
};
const asset1: Mint = {
  assetName: 'MeshToken',
  assetQuantity: '1',
  metadata: assetMetadata1,
  label: '721',
  recipient: 'addr_test1vpvx0sacufuypa2k4sngk7q40zc5c4npl337uusdh64kv0c7e4cxr'
};

const tx = new Transaction({ initiator: wallet });
tx.mintAsset(forgingScript, asset1);

const unsignedTx = await tx.build();
const signedTx = await wallet.signTx(unsignedTx);
const txHash = await wallet.submitTx(signedTx);
Create a transaction to mint asset

Define the address to send minted assets to.

Load a wallet to try this endpoint.

Sign Data

Sign data allows you to sign a payload to identify the wallet ownership.

const address = wallet.getPaymentAddress();
const signature = wallet.signData(address, payload);
Sign data

Define a payload and sign it with wallet.

Load a wallet to try this endpoint.