https://nandinfinitum.com/tags/fintech/ Recent content in Fintech on nand infinitum https://nandinfinitum.com/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E https://nandinfinitum.com/%3Clink%20or%20path%20of%20image%20for%20opengraph,%20twitter-cards%3E Hugo -- 0.125.7 en Wed, 19 Nov 2025 11:30:03 +0000 https://nandinfinitum.com/posts/visa/ Wed, 19 Nov 2025 11:30:03 +0000 https://nandinfinitum.com/posts/visa/ A look into how Visa actually works: the messy early days of credit, the coordination problems between banks, how Dee Hock re-architected the system, and how VisaNet became the invisible infrastructure behind modern payments.