Long read on how credit card networks work, where they're strong, where they're weak, and how blockchains and stablecoins actually address those weaknesses. And why stablecoin cards are growing in popularity. This is not AI. ---- Card networks are a marvel of human coordination. Every second, they process over 25,000 transactions around the world. Each year, they move over $30 trillion across 800 billion payments. With a tap or a swipe, you can buy just about anything at 175M+ merchant locat
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