Show HN: How to Verify USDC Payments on Base Without a Payment Processor
Sem_pre Sunday, February 22, 2026
The Problem Nobody Talks About You want to accept a $10,000 USDC payment. You have two options:
Option A: Integrate a payment processor like Coinbase Commerce. Set up an account, embed their checkout widget, handle their SDK. Pay $100 in fees (1%).
Option B: Build your own blockchain listener. Learn ethers.js, subscribe to USDC transfer events, handle reorgs, confirmations, edge cases. Two weeks of work, minimum.
There's no middle ground. No service that just tells you: "Yes, this specific payment arrived."
Until now.
https://paywatcher.dev?utm_source=hackernews
Summary
PayWatcher is a payment processing service that aims to protect merchants and consumers from fraud and payment issues. The service offers features such as real-time payment monitoring, chargeback management, and customizable risk controls to help businesses mitigate financial risks.
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paywatcher.dev