How to Read a Stablecoin Attestation in 2026

A stablecoin attestation is an independent accountant’s report that answers one narrow question: as of a named date and time, did the fair value of an issuer’s reserve assets equal or exceed tokens in circulation. The report covers a single point in time and does not attest to conditions before or after that moment.

To interpret an attestation, download the issuer’s PDF from its transparency page and extract five facts: the as-of date and publication lag; the exact tokens-in-circulation number the accountant reconciled; the fair value and composition of reserve assets; the opinion language and professional standard applied; and the accounting firm and the legal entity examined. Those five items show what the report actually verifies and what it does not.

Check the as-of date and the publication lag. A monthly issuer that publishes more than about 45 days after the snapshot is behind its stated cadence; a quarterly issuer with a lag of several months is farther removed from current conditions. Confirm the circulating supply figure the accountant reconciled. Issuers may exclude locked tokens, test tokens, or inventory held by the issuer; a material mismatch with on-chain supply warrants further inquiry.

Compare the reconciled circulation number to the total fair value of reserve assets and read the reserve mix. Cash and short-dated Treasury instruments behave differently from gold, Bitcoin, commercial paper or related-party loans. The composition can change the economic risk even when the attestation shows assets exceed liabilities on the as-of date.

Opinion language shows the level of assurance. An examination under U.S. AICPA attestation standards (AT-C 205) or a reasonable-assurance engagement under ISAE 3000 typically includes an opinion that the assertion is “fairly stated, in all material respects,” providing reasonable assurance about that day’s numbers. An agreed-upon procedures letter lists procedures and findings and does not include an opinion. If a document names no firm, no standard, or is an internal management memo, it is not a formal attestation.

The report should name the accounting firm, the issuer entity and the reserve examined. A signature on a parent company engagement does not automatically cover each issuing subsidiary. Check whether the same firm that attests reserves also audits financial statements: Deloitte & Touche LLP has audited Circle’s financial statements since fiscal 2022; KPMG completed an audit covering Tether International’s 2025 financial statements; Tether’s quarterly reserve snapshots have been prepared by BDO Italia.

Market examples: Circle publishes monthly AICPA attestation reports for USDC and posts weekly reserve composition. Most USDC backing sits in an SEC-registered government money market fund (USDXX) managed by BlackRock. Tether posts daily circulation figures and quarterly reserve reports; its Q2 2026 report showed about $187.75 billion in assets against $183.64 billion in liabilities, a $4.11 billion buffer, down from $8.23 billion at the end of March 2026.

U.S. regulation is changing disclosure requirements. The GENIUS Act requires permitted payment stablecoin issuers to publish monthly reports of outstanding tokens and reserve composition, including average tenor and the geographic location of custody. Each monthly report must be examined by a PCAOB-registered firm and certified by the issuer’s CEO and CFO. Issuers with more than $50 billion outstanding that are not SEC reporters must also produce annual GAAP financial statements audited by a registered firm. The exact form of the monthly examination will be set through agency rulemaking.

An attestation does not reconstruct changes between reporting dates, does not test internal controls the way a financial-statement audit does, does not confirm that assets were unencumbered throughout the month, and is not deposit insurance or a guarantee of retail redemption at par. Readers should rely on the PDF file posted on the issuer’s transparency page rather than a dashboard graphic or press release when reviewing an attestation.