Send Parallel Transactions

Tempo enables concurrent transaction execution through its expiring nonce system. Unlike traditional sequential nonces that require transactions to be processed one at a time, expiring nonces allow multiple transactions to be submitted simultaneously without nonce conflicts. Each transaction uses an independent nonce that automatically expires after a set time window, enabling true parallel execution.

Demo

By the end of this guide you will understand how to send parallel payments using expiring nonces under-the-hood.

Send Parallel Payments

demo

Create an account, or use an existing one.

Add testnet funds to your account.

Send 50 AlphaUSD to two recipients in parallel.

Steps

Set up Wagmi & integrate accounts

Ensure that you have set up your project with Wagmi and integrated accounts by following either of the guides:

Send concurrent transactions with nonce keys

To send multiple transactions in parallel, simply batch them together. Expiring nonces are attached to each transaction automatically.

import {  } from 'wagmi/tempo'
import {  } from 'viem'
 
const  = '0x20c0000000000000000000000000000000000001'
 
const { :  } = ..()
 
// Send both transfers in parallel.
const [, ] = await .([ 
  .mutate({ 
    : ('100', 6), 
    : '0x70997970C51812dc3A010C7d01b50e0d17dc79C8', 
    : , 
  }), 
  .mutate({ 
    : ('50', 6), 
    : '0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC', 
    : , 
  }), 
]) 
 
.('Transaction 1:', .transactionHash) 
.('Transaction 2:', .transactionHash)

Send Parallel Transactions

Demo

Steps

Set up Wagmi & integrate accounts

Send concurrent transactions with nonce keys

Learning Resources