Payments and Membership Infrastructure
Card payments, in-app purchases and paid scope locked down on the server.
Overview
Three payment channels, one membership truth. Card payments on the web, in-app purchases in the stores; all of them feed the same membership record.
The challenge
The most common mistake in payment flows is unlocking membership on a 'payment succeeded' message from the client. That leaves the paid scope open to anyone who asks for it.
The solution
Membership is unlocked only on a server-verified result: a signed response from the provider for card payments, and receipt validation in the stores. Paid endpoints sit behind a shared entitlement middleware; hiding things in the client is interface convenience, not security.
Results
- Three payment channels, one membership record
- Receipts and payment results verified on the server
- Atomic redemption for single-use gift codes
- Free usage quotas managed from the panel
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