The problem worth solving
Lesson 1 explained what a stablecoin is and why it holds a dollar. The obvious follow-up: so what? A dollar that moves on a blockchain is only interesting if moving dollars is currently a problem.
Domestically, it mostly is not. Paying a supplier in your own country is cheap and fast enough that no business is desperate for an alternative.
Cross-border is a different story. Sending money between countries is slow (often days), expensive (fees plus an FX spread), opaque (you frequently cannot see where the payment is), and constrained by banking hours and cut-off times. For a business paying overseas suppliers, running international payroll, or managing cash across subsidiaries, this is a real and permanent cost.
This lesson covers:
- Why cross-border payments are structurally slow, which is the necessary background.
- What stablecoins actually change, and the one property that matters most.
- Treasury effects, including the capital that today sits trapped.
- Tokenized treasuries and deposits, the adjacent developments.
- How to read the volume numbers, which are quoted constantly and mostly misunderstood.
The framing to hold: the interesting claim is not that stablecoins are digital. Bank money has been digital for decades. The claim is about what settlement means, and that requires understanding what happens today.

