Node.js & Bare Quickstart

Get started with WDK in Node.js or Bare runtime environments in 3 minutes

What You'll Build

In this quickstart, you'll create a simple application that:

Sets up WDK with multiple blockchain wallets (EVM, Bitcoin, TRON)
Generates a new secret phrase (seed phrase)
Resolves addresses across different chains
Checks balances and estimates transaction costs
Sends transactions on multiple blockchains

Prerequisites

Before we start, make sure you have:

Tool

Version

Why You Need It

Node.js

20+

To run JavaScript code

npm

Latest

To install packages

Code Editor

Any

To write code

Tool

Version

Why You Need It

Bare Runtime

Latest

To run JavaScript

npm

Latest

To install packages

Code Editor

Any

To write code

To install Bare runtime use command npm i -g bare

Step 1: Set Up Your Project

First, we need to create a folder and initialize the project

mkdir wdk-quickstart && cd wdk-quickstart && npm init -y

Then install necessary WDK modules

npm install @tetherto/wdk @tetherto/wdk-wallet-evm @tetherto/wdk-wallet-tron @tetherto/wdk-wallet-btc

Learn more about WDK modules:

@tetherto/wdk - The main SDK module
@tetherto/wdk-wallet-evm - Ethereum and EVM-compatible chains support
@tetherto/wdk-wallet-tron - TRON blockchain support
@tetherto/wdk-wallet-btc - Bitcoin blockchain support

Step 2: Create Your First Wallet

Create a file called app.js:

app.js

import WDK from '@tetherto/wdk'
import WalletManagerEvm from '@tetherto/wdk-wallet-evm'
import WalletManagerTron from '@tetherto/wdk-wallet-tron'
import WalletManagerBtc from '@tetherto/wdk-wallet-btc'

async function main() {
  console.log('Starting WDK App...')
  
  try {
    // Your code will go here
  } catch (error) {
    console.error('Application error:', error.message)
  }
}

// Run the application
main()

Now, add the following code to generate a seed phrase:

app.js

  try {
    const seedPhrase = WDK.getRandomSeedPhrase()
    console.log('Generated seed phrase:', seedPhrase)
  } catch (error) {
    console.error('Application error:', error.message)
  }

Now, let's register wallets for different blockchains:

app.js

// Add this code after the seed phrase generation
console.log('Registering wallets...')

const wdkWithWallets = new WDK(seedPhrase)
  .registerWallet('ethereum', WalletManagerEvm, {
    provider: 'https://eth.drpc.org'
  })
  .registerWallet('tron', WalletManagerTron, {
    provider: 'https://api.trongrid.io'
  })
  .registerWallet('bitcoin', WalletManagerBtc, {
    provider: 'https://blockstream.info/api'
  })

console.log('Wallets registered for Ethereum, TRON, and Bitcoin')

To learn more about configuring the wallet modules:

Step 3: Check Balances

To check balances, we first need to get accounts and addresses. Let's get accounts and addresses for all blockchains:

app.js

// Add this code after the wallet registration
console.log('Retrieving accounts...')

const accounts = {
  ethereum: await wdkWithWallets.getAccount('ethereum', 0),
  tron: await wdkWithWallets.getAccount('tron', 0),
  bitcoin: await wdkWithWallets.getAccount('bitcoin', 0)
}

console.log('Resolving addresses:')

for (const [chain, account] of Object.entries(accounts)) {
  const address = await account.getAddress()
  console.log(`   ${chain.toUpperCase()}: ${address}`)
}

Now, let's check balances across all chains:

// Add this code after the address resolution
console.log('Checking balances...')

for (const [chain, account] of Object.entries(accounts)) {
    const balance = await account.getBalance()
    console.log(`   ${chain.toUpperCase()}: ${balance.toString()} units`)
}

Here is the complete app.js file:

app.js

import WDK from '@tetherto/wdk'
import WalletManagerEvm from '@tetherto/wdk-wallet-evm'
import WalletManagerTron from '@tetherto/wdk-wallet-tron'
import WalletManagerBtc from '@tetherto/wdk-wallet-btc'

async function main() {
  console.log('Starting WDK App...')
  
  try {
    const seedPhrase = WDK.getRandomSeedPhrase()
    console.log('Generated seed phrase:', seedPhrase)

    console.log('Registering wallets...')   

    const wdkWithWallets = new WDK(seedPhrase)
      .registerWallet('ethereum', WalletManagerEvm, {
        provider: 'https://eth.drpc.org'
      })
      .registerWallet('tron', WalletManagerTron, {
        provider: 'https://api.trongrid.io'
      })
      .registerWallet('bitcoin', WalletManagerBtc, {
        provider: 'https://blockstream.info/api'
      })

    console.log('Wallets registered for Ethereum, TRON, and Bitcoin')

    const accounts = {
      ethereum: await wdkWithWallets.getAccount('ethereum', 0),
      tron: await wdkWithWallets.getAccount('tron', 0),
      bitcoin: await wdkWithWallets.getAccount('bitcoin', 0)
    }

    console.log('Resolving addresses:')

    for (const [chain, account] of Object.entries(accounts)) {
      const address = await account.getAddress()
      console.log(`   ${chain.toUpperCase()}: ${address}`)
    }

    console.log('Checking balances...')

    for (const [chain, account] of Object.entries(accounts)) {
        const balance = await account.getBalance()
        console.log(`   ${chain.toUpperCase()}: ${balance.toString()} units`)
    }

    console.log('Application completed successfully!')

  } catch (error) {
    console.error('Application error:', error.message)
  }
}

// Run the application
main()

Step 4: Run Your App

Execute your app:

node app.js

bare app.js

You should see an output similar to this:

Starting WDK App...
Generated seed phrase: abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about
Registering wallets...
Wallets registered for Ethereum, TRON, and Bitcoin
Resolving addresses:
   ETHEREUM: 0x742d35Cc6634C0532925a3b8D9C5c8b7b6e5f6e5
   TRON: TLyqzVGLV1srkB7dToTAEqgDSfPtXRJZYH
   BITCOIN: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
Checking balances...
   ETHEREUM: 0 units
   TRON: 0 units
   BITCOIN: 0 units
Application completed successfully!

What Just Happened?

Congratulations! You've successfully created your first multi-chain WDK application that works in both Node.js and Bare runtime environments. Here's what happened:

You generated a single seed phrase that works across all blockchains
You registered wallets for Ethereum, TRON, and Bitcoin
You created accounts derived from the same seed phrase using BIP-44
You used the same API to interact with different blockchains
You checked balances across multiple chains with consistent methods

Next Steps

Now that you have a basic multi-chain wallet running, here's what you can explore:

Add More Blockchains

For example, to add Solana support:

npm install @tetherto/wdk-wallet-solana

import WalletManagerSolana from '@tetherto/wdk-wallet-solana'

// New or existing WDK instance
const wdk = new WDK(seedPhrase)

wdk.registerWallet('solana', WalletManagerSolana, {
  provider: 'https://api.mainnet-beta.solana.com'
})

Estimate Transaction Costs

for (const [chain, account] of Object.entries(accounts)) {
  try {
    const quote = await account.quoteSendTransaction({
      to: await account.getAddress(),
      value: chain === 'bitcoin' ? 100000000n : chain === 'tron' ? 1000000n : 1000000000000000000n
    })
    console.log(`   ${chain.toUpperCase()}: ${quote.fee.toString()} units`)
  } catch (error) {
    console.log(`   ${chain.toUpperCase()}: Unable to estimate`)
  }
}

Send Transactions

const result = await ethAccount.sendTransaction({
  to: '0x742d35Cc6634C05...a3b8D9C5c8b7b6e5f6e5',
  value: 1000000000000000000n // 1 ETH
})

console.log('Transaction hash:', result.hash)

Use DeFi Protocols

npm install @tetherto/wdk-protocol-swap-velora-evm

import SwapveloraEvm from '@tetherto/wdk-protocol-swap-velora-evm'

wdk.registerProtocol('swap-velora-evm', SwapveloraEvm)

Troubleshooting

Common Issues

"Provider not connected"

Check your API keys and network connections
Ensure you're using the correct provider URLs

"Insufficient balance"

This is normal for new addresses
Use testnet faucets to get test tokens

"Module not found"

Make sure you've installed all required packages
Check your import statements

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