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PCAPPayment Control Assurance PlatformPrototype, made-up data

Shows what each payment will really do before it leaves the bank.

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About this prototype (for markers: how it maps to our report) Home and the guided tour

Synthetic data only. No real people, accounts or payments. The Revlon replay is a simplified synthetic rebuild of a public court case. Not connected to Flexcube or any bank system. Data is kept only in this browser.

Prototype for the NUS IS4234 Group 4 report "Approved but Not Understood: Control Design Lessons from Citibank's Revlon Payment Error". An overlay on the core payment system, not a replacement. Built with help from Claude Code (see README). Fonts: Space Grotesk, IBM Plex Sans and JetBrains Mono under the SIL Open Font License.

Payment details and evidence trail