Cryptocurrency History: Money, Bitcoin and Real Fintech (UPI, ONDC)

Returning to Volume I’s Part 0 monetary history arc — barter, commodity money, metal coins, paper receipts, the gold standard, Bretton Woods, fiat currency — cryptocurrency’s proponents frame it as the next logical step: a return to a hard-capped, scarce monetary asset (echoing gold) but in digital, globally transferable form, free from any single government’s discretionary control. Skeptics counter that money’s core historical function has always been stability and near-universal usability for everyday transactions — exactly the two properties Bitcoin’s price volatility has, so far, most conspicuously failed to deliver at scale, which is precisely why stablecoins, not volatile cryptocurrencies themselves, have become crypto’s most widely adopted practical payment use case to date.

Since 2024 crypto has been absorbed into the plumbing it set out to replace. The SEC approved the first spot bitcoin exchange-traded products on January 10, 2024, its chair stressing that it “did not approve or endorse bitcoin,” and on September 17, 2025, approved generic listing standards so further commodity-based crypto trusts no longer need case-by-case rule changes. Treasuries moved onto blockchains as well: BlackRock’s BUIDL fund, launched March 20, 2024, for qualified investors with a $5 million minimum, holds cash, T-bills and repo at $1 per token, and tokenized Treasury funds held about $14.8 billion on October 4, 2026. The token most used as money, the payment stablecoin, is now by law a claim on Treasury bills (Section 11.4: Stablecoins and Their Collateral Models). The arc of Volume I’s Part 0 repeats: new forms of money end up wrapped by regulated intermediaries.

FTX shows what happens when the wrapper fails. The exchange filed for bankruptcy on November 11, 2022. Its founder, Sam Bankman-Fried, channeled billions of dollars of customer deposits to his trading firm, Alameda Research, to spend on investments, political contributions and real estate; he was convicted on November 2, 2023, and sentenced on March 28, 2024, to 25 years, with over $11 billion forfeited. Nothing cryptographic failed. What was missing was the segregation of client assets and the daily reconciliation that client-asset rules require of brokers (Section 9.7: Client Asset Protection & Personal Regulatory Accountability; Volume III’s Part 8 shows the reconciliation itself). The bankruptcy plan approved in October 2024 pays about 119% of allowed claims to 98% of creditors, but claims were fixed in dollars at petition-date prices of November 11, 2022, which valued bitcoin at $16,871. A customer who held 1 BTC receives about 1.19 × $16,871 ≈ $20,076; at about $63,000, bitcoin’s price when the plan was approved, the coin itself was worth $63,000 ÷ $20,076 ≈ 3.1 times as much.

Most fintech is a contest over who earns the fees on payments. On a card payment the merchant pays a merchant discount rate (MDR); most goes to the cardholder’s bank as interchange, a slice to the network, the rest to the merchant’s processor. Each firm’s share is its take rate. A $100 online purchase on a Visa Signature Preferred card (interchange 2.50% + $0.10) through a processor charging a flat 2.9% + $0.30:

Debit flips the split. Regulation II (the Durbin Amendment) caps interchange for issuers with $10 billion or more of assets at $0.21 + 0.05% + $0.01 fraud adjustment: $0.27 on the same $100. In 2024 covered issuers averaged $0.23 per debit transaction and exempt issuers $0.51, 2.2 times as much. A merchant on flat pricing still pays $3.20, so the processor keeps $3.20 − $0.27 − $0.16 = $2.77; interchange-plus pricing passes the saving through. A North Dakota court vacated the cap’s formula in August 2025 but stayed its ruling pending appeal, and a $38 billion Visa–Mastercard settlement, preliminarily approved in June 2026, would cut credit interchange 0.10 point for five years and widen surcharging.

Bank-to-bank rails cost cents, not percent: ACH carried 35.2 billion payments worth $93 trillion in 2025; the Fed’s FedNow (launched July 20, 2023) charges banks $0.045 per instant transfer; The Clearing House’s RTP network moved $621 billion in the third quarter of 2026; bank-owned Zelle moved $1.2 trillion in 2025. Cards survive because interchange pays for credit, rewards and chargebacks.

Buy now, pay later (BNPL) sells merchants higher conversion. A pay-in-four loan with no finance charge falls outside Regulation Z‘s creditor definition (“more than four installments”), and the CFPB withdrew its 2024 rule treating BNPL lenders as card issuers in May 2025. CFPB data for 2021: revenue 4.02% of sales (merchant fees 2.49%), costs 3.01% (credit losses 1.30%), margin 1.01%.

Embedded finance places accounts and loans inside a non-bank’s app, with a bank behind it. Neobanks are its largest form: Chime, “a financial technology company, not a bank,” uses partner banks under $10 billion of assets, exempt from the Durbin cap, and interchange-based revenue was 76% of its 2024 total. The weak point is the ledger: when middleware firm Synapse failed in April 2024, its trustee found $65–95 million less at partner banks than its records said users were owed (Section 9.7: Client Asset Protection & Personal Regulatory Accountability).

India shows public rails as the alternative to private fee pools (Volume I’s Part 10 tells how UPI was built). In September 2026 UPI processed 24.07 billion payments worth ₹29.37 lakh crore, about 802 million a day, at zero MDR by law since January 2020; the state funds it instead, with an incentive of 0.15% on small-merchant payments up to ₹2,000. The Account Aggregator network, live since September 2021, moves financial data only with consent; 112.34 million users had linked accounts by September 2025. The ONDC commerce network reached 500 million cumulative transactions in July 2026: 500 ÷ 802 = 0.62 of one day of UPI. Public rails win where the network effect sits in the rail, not with merchants and logistics.