The promise hides the moving parts
A stablecoin looks simple because its promise is simple: one token should trade near one dollar. The risk is that the promise depends on reserves, redemption access, liquidity, and user confidence all working at the same time. A token can sit near its peg for months while carrying hidden fragility in its backing. Reading the reserve disclosures is how you test that fragility before treating a dollar token as cash.
Attestation is not an audit
Many issuers publish an attestation, and it is easy to misread what that document proves. An attestation is a point-in-time statement from an accounting firm that certain assets and liabilities existed on a specific date. It is not a full financial-statement audit, and it does not by itself show that controls are sound on the days between reports. Circle, for example, discloses USDC reserve holdings weekly and has a Big Four accounting firm provide monthly third-party assurance that reserves exceed USDC in circulation, using attestation standards set by the American Institute of Certified Public Accountants. That is frequent and detailed, but the report is still a dated snapshot with a defined scope, not a promise about every future day.
Look inside the reserve
What the reserve holds matters more than a headline saying it is fully backed. High-quality dollar reserves are boring: short-dated U.S. Treasury bills, cash at systemically important banks, and overnight Treasury repurchase agreements. Circle describes USDC as backed by highly liquid cash and cash-equivalent assets, and its reserve breakdown lists deposits at systemically important institutions, overnight reverse Treasury repo, and Treasuries maturing in under three months. Risk rises when reserves stretch into longer-duration bonds, corporate debt, secured loans, related-party assets, or crypto collateral that cannot be sold quickly without a haircut. Solvency is not liquidity: a portfolio can exceed liabilities on paper and still struggle to meet same-day redemptions in a panic.
Frequency and structure are signals
Compare how issuers report. Tether publishes daily circulation data and quarterly reserve information, and states that each token is 100% backed by reserves including currency and cash equivalents. Circle discloses weekly and attests monthly. The gap between those cadences is itself a signal about how quickly a holder can check the peg. A report that shows only a total balance, with no asset categories, maturities, or comparison against tokens outstanding, offers far less protection than one that breaks the portfolio down in detail.
A checklist beats a headline
Before relying on a stablecoin, ask seven questions. Who issues it and where is it regulated? Who can redeem directly, and on what schedule? How often are reserve reports published? Do the reports show asset types and maturities? Are reserves held with independent custodians? Does the token keep deep liquidity across reputable venues? Has the issuer handled stress without blocking ordinary redemptions? No checklist removes risk, but it separates tokens with disciplined, verifiable backing from tokens that lean on brand recognition and exchange liquidity. A one-dollar quote is only the surface; the reserve report, redemption terms, and legal structure explain what the quote is built on.
Adapted from Stablecoin Reserves: How to Read Attestations, Treasuries and Liquidity Risk Before Trusting a Dollar Token.