$85M Frozen: Why Fintech Apps Don’t Need Banks

In this video, we break down the full architecture behind modern fintech apps like Cash App, Chime, Mercury, and Ramp. You’ll see how fintechs use APIs to plug into licensed banks, payment networks, and compliance systems without owning any of it. But this model has a hidden risk. In 2024, the collapse of a single BaaS provider froze over $85 million in customer funds. This wasn’t just a business failure. It was an architectural failure. We go deep into: • How BaaS actually works (fintech → middleware → sponsor bank → payment rails) • How a card transaction flows in milliseconds • Why recon…