What a stablecoin reserve attestation can and cannot tell you

A stablecoin reserve attestation can support a specific statement about assets backing tokens at stated dates or over a defined period. Its value depends on what was examined, the criteria applied and the accountant's conclusion.

The report is evidence to read alongside redemption terms and reserve composition. Treating an accountant's name as a guarantee of the whole business goes beyond the work described.

Identify the statement being examined

Begin with the issuer, token, reporting date and management assertion. Determine which reserve assets and token obligations are included, how they are valued and whether restrictions or exclusions are disclosed. The publication date may be later than the date of the balances.

The AICPA's 2025 stablecoin reporting criteria provide a framework for reporting on asset-backed fiat-pegged tokens and the availability of backing assets. A framework supports consistency; a particular report still needs to identify the criteria it actually uses.

Read the independent practitioner's report as well as management's table. Under AICPA attestation standards, an examination provides reasonable assurance, a review provides limited assurance, and agreed-upon procedures report findings without an assurance opinion or conclusion. “Attestation” does not mean that every report has the same assurance level.

Reserve coverage is narrower than a company audit

A report comparing defined reserve assets with tokens in circulation can answer a useful question. It does not automatically cover every company liability, operating expense, related-party exposure or internal control.

Circle's transparency page distinguishes monthly reserve assurance from the audit of its financial statements. That is a useful example of separate reporting layers. Neither the label “audited company” nor a reserve attestation should be substituted for the actual scope and conclusion of the relevant document.

Its August 2026 USDC examination report examines management's reserve-coverage assertion at two specified dates. The opinion concerns that assertion under the report's criteria, rather than a promise about every day between or after those dates.

The PCAOB Investor Advocate's warning on proof-of-reserve reports explains that such reports can have important limitations and are not equivalent to financial-statement audits. Its warning concerns proof-of-reserve work, not a finding that every standards-based stablecoin examination has identical deficiencies. Inspect the engagement before applying a general label.

Asset value and ready liquidity answer different questions

Suppose a hypothetical report shows £101 million of qualifying reserves against £100 million of tokens at its reporting date. That supports a £1 million excess under the stated criteria. It does not establish how quickly every asset can be converted into cash during heavy redemptions.

Cash at a bank, short-dated government securities and longer or less liquid investments have different access and valuation characteristics. Check maturities, custody, concentration, encumbrances and how sale proceeds reach the issuer. A positive valuation comparison alone is not a stress test of every operational step.

Nor does a dated report prove continuous coverage after the observation period. New issuance, redemptions, market movements and banking events can change the position. More frequent disclosure reduces the information gap without eliminating it.

Your redemption right needs its own evidence

The USDC terms show why eligibility and account conditions matter for direct redemption. The issuer, legal entity and jurisdiction applicable to the holder must be identified. A customer using an exchange may depend on that intermediary's withdrawal service.

Our guide to stablecoin payments follows that practical route. Reserve assets, contractual redemption and an exchange's market price are connected, but they are not interchangeable measures.

For a usable assessment, record the report's date, covered obligations, asset categories, assurance level and conclusion. Then read the redemption terms separately. An unresolved qualification, stale report or unclear asset restriction deserves more attention than a headline coverage ratio.

Sources

• AICPA: Criteria for reporting on stablecoins
• Circle: Transparency and reserve reports
• Circle: August 2026 USDC examination report
• AICPA: US attestation standards
• PCAOB Investor Advocate: Proof-of-reserve limitations
• Circle: USDC terms