User Documentation Hub

This hub provides easy-to-read, non-technical instructions for corporate treasury managers, finance administrators, and startup owners using MerchantPro. Learn how to optimize payroll flows and automate stablecoin payouts.

What is MerchantPro?

MerchantPro is a premium B2B payment optimization platform. We combine biometric authentication (Passkeys) and gas-abstracted smart wallets to make mass stablecoin treasury transfers completely friction-free.

The Core Benefits

Passkey Security: Sign batch transactions using simple fingerprint or face scans. No private keys to write down.
Gasless Payouts: Pay zero network transaction fees. Relayers route user transactions through sponsored Paymasters.
Zero Blockers: Concurrent 2D nonces ensure that multiple payments execute in parallel without ordering queues.

Step-by-Step Onboarding

Follow this 3-step walk-through to establish your business account and issue your first batch payroll.

Step 1: Sign up and register biometric credentials

Open the MerchantPro dashboard, navigate to the vault access portal, and register a secure credential. If you are developing locally or testing on a non-biometric PC, activate the **"Developer Virtual Biometrics"** toggle to simulate authentication credentials instantly.

Simulated WebAuthn Register Panel

MerchantPro Security

Developer Note: Virtual biometrics allows you to mock WebAuthn validation on any environment without needing actual touch sensors.

Core Features & Workflows

Understand how our treasury stack addresses B2B operational challenges.

Gas-Abstracted Batch Payroll

Problem: Multi-recipient treasury disbursements incurring significant fee overhead and failing due to high serial queue blocks.

Solution: MerchantPro packages payouts into a single UserOperation, sponsoring gas fees via paymaster relayer integrations.

Example: Executing a batch payroll run of $45,000 across 50 remote contractors.

Result: All payouts settle within a single block, with zero gas token overhead paid by the merchant's administrator.

Multi-Chain Bridging & Auto-FX

Problem: Holding cash reserves in multiple volatile currencies or chains, causing currency exchange losses.

Solution: Direct CCTP adapters that burn source tokens and mint Arc stablecoins, automatically routing conversions to treasury USDC.

Example: Supplier deposits 10,000 EURC from a Solana vault.

Result: Funds are bridged instantly and swapped into 10,800 USDC on Arc Testnet, locking in treasury values.

Real World Use Cases

See how different enterprises optimize their treasury structure with MerchantPro.

Global Startup

A startup with team members globally uploads payroll CSV sheets monthly, executing payouts in gasless USDC to remote employees with 1-click biometric checks.

Digital B2B Supplier

A supplier receiving payments across different test networks consolidated their incoming EURC and USDC into a single, high-yield Arc-settled treasury index vault.

On-demand Tutorials

Follow these beginner and intermediate tutorials to master B2B stablecoin operations.

1. Establishing Biometric Vaults (Beginner)

Beginner

Goal: Deploy your first modular smart account. Learn how to connect Web3 client nodes, trigger fingerprint key registration, and configure local storage policies.

2. Executing Multi-recipient Payouts (Intermediate)

Intermediate

Goal: Execute batch transfers gas-free. Learn how to format payroll CSV files, resolve EVM recipient indices, verify payloads, and monitor on-chain transaction outcomes.

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