The Money Stack

The Money Stack is a ten-part series on the history and technology of how money moves.

From cowrie shells to instant payment rails, every era has built a new protocol for moving value faster, cheaper, and to more people. Each one solved the problem the last could not. Each one created the constraint the next had to break.

Written from an engineering perspective, the series traces that four-thousand-year thread through SWIFT messages, card networks, M-Pesa, Stripe, blockchain, and the African fintech explosion — with technical honesty and without the usual Silicon Valley bias. This is not a business history. It is the story of the systems underneath the systems, told for builders who want to understand the stack they are building on.