Each chapter is a self-contained visual story — but read in order, they build into a complete map of how money moves. Start with the $100.
There is no money in your bank account — ledgers, reserves, settlement and central banks, animated from zero.
A ledger with no bank: keys, blocks, consensus, smart contracts and L2s — no hype, no scorn.
The anatomy of a card payment: auth, clearing, settlement — and the three skims.
The eight-player food chain and each one's business model.
Debit, credit, charge, prepaid and commercial — same tap, four money sources at four very different prices.
POS, e-commerce, in-app, QR and phone-as-terminal — where a card is read decides the fraud, the fees and the rules.
What moves your rate, and the global regulation wars.
Tokenization, 3DS, and the liability bargain.
DPANs, cryptograms, token vaults — how your card number stopped traveling, animated end to end.
UPI, Pix, FedNow, SEPA Instant — the global rebuild, compared.
Open banking, pay-by-bank and VRP — near-free, instant, chargeback-free, and the structural threat to interchange.
17 instant-payment systems, one card each: operator, alias, and the detail worth knowing.
Device tokens, secure elements, pass-through vs stored-value wallets.
Merchant-funded credit, late-fee economics, and the global regulators closing in.
SWIFT, nostro/vostro, and the correspondent chain.
Mid-market vs the shade, the DCC trap, and why "zero-fee" isn't.
Twelve accidents that built payments: the Fresno Drop, Wirecard, demonetization, and more.
BIN sponsors, program managers, issuer-processors and just-in-time funding — the stack behind every fintech card.
Acquiring, underwriting, MoR vs PayFac vs ISO, reserves and the merchant discount.
How an on-chain payment settles, why the ramps cost more than the rail, and where crypto meets the card networks.
Mint-move-redeem animated, the float business model, GENIUS Act & the ramp problem.
Your ticket size, your volume, three markets — every rail prices the same sale, live.
Code 05? Code 51? What the issuer is really saying, and whether retrying will work.
The 4-digit code that sets your rate, your rewards, and whether crypto counts as cash.
MII, BIN, and the Luhn check — dissect a card number live and watch the 1954 spell-checker work.
The first digits of a card number know the network, the bank, the country. Type and watch.
Every processor's published price in one table — plus the regulated floors underneath.
A real ISO 8583 message, a merchant statement, a chargeback notice — annotated line by line.
The chapter order is the onboarding plan: the full curriculum, a tool for every acronym, and a retrieval quiz at the end of every chapter to check it stuck — about a week of ramp-up, free, no seats to buy. Just send them the link.
The whole domain, by subject — jump straight to any topic. Faded items are on the roadmap (see ACADEMY-BLUEPRINT).
Pick your lens — a curated trail through the same chapters, ordered for how you'll actually use them.