P13 Who promises "safety"?
Paper of the king's bank and shares of companies that underwrote government bonds → Deposits of trust companies → Securities and digital money claiming to be backed.
Behind the words "guaranteed" and "backed," who is offering what, and up to what amount?
Guarantee
Four Steps
The banner of "safety" is raised on the credit of the one who makes the promise. When the banner becomes too prominent, fewer people check the backing.
Law's paper was the king's bank, the South Sea Company underwrote government bonds, trust companies held unregulated deposits, and stablecoins have private reserve assets. The promising entity and the existence of protective laws differ.
When you hear "principal guaranteed" or "backed," check who protects it, with what, and up to what amount, by consulting disclosure statements and protective laws.
When equating "Law's paper = today's e-money," do not place an era with deposit insurance and payment services laws on the same shelf as one without.
These are the four steps for going beyond "it's similar." The "limitations" step defines the point beyond which historical analogies should not be drawn.
Read at the Modern Money Stations
Stations from the textbook "Modern Money: Whose Debt Is It?" where this structure appears. The four steps for each station are not displayed on the screen in the textbook. Here, you can read them side by side.
If a bank fails, what happens to the deposits?
1-06 / Modern Money Present. Tokyo. Deposit Insurance Corporation.
- Similarities
- The nature of a deposit—that it will not be returned if the depository fails—has not changed since the era of money changers.
- Differences
- Today, a third party—insurance—draws a line, and within that line, the "bank's liability" is replaced by the "corporation's promise."
- Applications
- When you see a balance, check if it is for payment and settlement or a general deposit, and if it exceeds ten million yen at a single financial institution.
- Limitations
- Ten million yen is the current value in Japan, with an exception that it is multiplied by the number of banks for one year after a merger. The methods of failure resolution (e.g., insurance payment, financial assistance) are not covered.
The law divides digital money into three boxes
8-03 / Digital Present, Tokyo, Act on Settlement of Funds, Article 2
- Similarities
- The role of the law in drawing a line between what is money and what is not is the same as ancient edicts that stipulated the presence or absence of a stamp on metal.
- Differences
- The criteria for the boundary lie not in the material, but in the nature of the contract and circulation: "whether it is denominated in a currency" and "whether it can be used by unspecified persons."
- Applications
- When you see a digital asset, check which of the three boxes it falls into according to the legal definition, and then read the risks.
- Limitations
- The content of the regulations (registration, protection, disclosure) imposed on each box is not covered at this stop.
Stablecoins: whose promise, and of what kind?
8-04 / Digital July 18, 2025, Washington, GENIUS Act
- Similarities
- The promise to exchange a receipt for gold at face value has the same structure as the receipts from the age of goldsmiths.
- Differences
- The backing is not gold but short-term government bonds, repos, and central bank accounts; the law specifies the breakdown and prohibits the payment of interest.
- Applications
- When you see a stablecoin, check who the issuer is, what backs it, and under which law it operates.
- Limitations
- The law's effective date, detailed rules from regulatory authorities, and the content of Japan's regulations on electronic payment instruments are not covered.
Reading the backing — opening the disclosure page
8-05 / Digital August 31, 2026 Boston USDC Reserves
- Similarities
- The method of gaining trust by disclosing backing is the same concept as when banks began publishing their balance sheets.
- Differences
- The backing consists of short-term government bonds and repos, with weekly disclosures and monthly attestations, making the frequency an order of magnitude higher.
- Applications
- When viewing the disclosure page, read the categories, frequency, and attesting party, and treat the amounts as the values for that day.
- Limitations
- This stop is based on the self-disclosure of one company. It does not evaluate other issuers or the difference between attestation and audit.
Mortgages become securities
6-02 / Before 2008 2000s United States
- Similarities
- The idea of bundling claims into a tradable form is in the same lineage as the endorsement and transfer of bills of exchange.
- Differences
- The contents of the bundle were not visible, credit ratings acted as a substitute for verifying the contents, and even bundles of bundles were created.
- Applications
- When you hear "securitization," ask whose liabilities were bundled and who verified the contents.
- Limitations
- This station is based only on the concluding part of the commission's report. Monetary amounts are not cited as numbers were missing in the PDF extraction. The report also includes dissenting opinions.
What happens when the price of collateral falls?
6-05 / Before 2008 Summer 2007–September 2008, United States/Europe
- Similarities
- The dynamic where a fall in collateral value accelerates the flight of lenders is always present where there is collateralized lending.
- Differences
- The collateral was mortgage-backed securities, the lenders were MMFs and foreign banks, and the chain reaction spread globally overnight.
- Applications
- Read crisis reports starting with "what collateral's price has fallen?"
- Limitations
- The overall picture of causality is based on the committee's conclusions and the description by the NY Fed. The report also includes a dissenting opinion citing global capital flows as the main cause.