Payments & entitlements / INDEPENDENT PROJECT
Base Siege Premium
An account-bound premium portal for game players whose devices do not have access to native app stores.
PROBLEM
A purchase belongs to the player
The portal offers lifetime premium status attached to a Base Siege commander account when native app stores are unavailable. The interesting boundary is the relationship between verified payment and account entitlement.
DECISIONS
Correctness at the payment boundary
A production entitlement workflow should verify provider signatures, reconcile ambiguous payment outcomes, deduplicate callbacks, and prevent cross-account attachment. A successful browser redirect is not proof of payment. These are review criteria, not claims of a completed payment audit.
EVIDENCE
Keep the demonstration safe
The public premium page was inspected on 24 October 2026. This portfolio does not expose a payment ledger, customer identifiers, transaction records, provider credentials, or a simulated payment presented as real.
DEMO
Sandbox-only evaluation scenario
Use fictional account identifiers and a provider sandbox. Deliver the same verified payment callback twice, delay account synchronization, and inspect whether one entitlement is granted. Do not initiate a real purchase to evaluate the portfolio.