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Cover image for Security Engineering Story: Sidelining Platform Payments to Sell Digital Products to Anyone, Anywhere
Faith Sithole
Faith Sithole

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Security Engineering Story: Sidelining Platform Payments to Sell Digital Products to Anyone, Anywhere

The Problem We Were Actually Solving

At its core, our platform was designed to democratize access to digital products and commerce. We were trying to solve two interdependent problems simultaneously: building a product for creators to sell digital art and ensuring we could process payments seamlessly without relying on gatekeepers like PayPal or Stripe, which often restrict access to services based on geographic location.

What We Tried First (And Why It Failed)

Initially, we explored the use of workarounds like Stripe's Connect or PayPal's Adaptive Payments, which allow developers to integrate these payment services into their own applications. However, these solutions came with significant drawbacks: they introduced new attack vectors, required us to maintain complex PCI compliance, and imposed hefty fees on our transactions. Furthermore, their restrictive policies often resulted in blocked accounts, limiting our capabilities. Essentially, we were using a leaky bucket to solve our problem, only to find that it was still leaking.

The Architecture Decision

We realized that to achieve our goals, we had to move beyond traditional payment providers and build a custom solution that could handle cross-border payments without geographic restrictions. This required us to adopt cryptocurrency as our primary payment mechanism. We chose to use a hybrid payment flow, where cryptocurrency payments were converted to fiat upon receipt, ensuring compliance with various regulatory requirements. The architecture decision also led us to implement a decentralized identity management system, allowing creators and customers to maintain control over their own identities and data.

What The Numbers Said After

Our decision paid off in the long run. With a custom-built cryptocurrency payment system, we were able to process cross-border transactions of over $1.5 million within the first year without any restrictions. Customer acquisition and retention rates increased significantly, thanks to our ability to offer seamless, borderless payments. Moreover, our solution eliminated the complexity and costs associated with PCI compliance and payment provider fees, significantly improving our overall revenue margin.

What I Would Do Differently

While our decision to adopt cryptocurrency was correct, we would've benefited from an earlier adoption of more robust testing and integration tools. We spent an inordinate amount of time debugging and resolving issues related to our custom-built payment system. Implementing tools like Concourse CI and CircleCI for continuous integration, as well as integrating a service like Datadog for real-time monitoring, would've saved us countless hours of manual troubleshooting. In hindsight, our failure to integrate these tools earlier was a critical oversight that delayed our go-to-market timeline.

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