What edge cases would you test for stablecoin checkout webhooks?

Short summary

A developer building ChainPay, a stablecoin checkout system, shares a checklist of webhook edge cases including late payments, partial payments, duplicate deliveries, and chain confirmation delays. They propose a state machine with pending, confirming, and paid states plus terminal states for expired, underpaid, overpaid, and cancelled. They seek community input on additional edge cases before going production-ready.

• •Edge case checklist for stablecoin payment webhooks: expiry, partial, overpayment, duplicates, exchange timing
• •Proposed state machine: pending → confirming → paid with terminal states for expired/underpaid/overpaid/cancelled
• •Seeking community feedback from builders of crypto checkout and billing webhook systems

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