This is field guide #33 in our Reading Room, a series on how to read the documents and data releases that move digital-asset markets. Today: the stablecoin reserve attestation — what it proves, what it very deliberately does not prove, and the seven things to read in order.

The timing is not arbitrary. The Federal Reserve Bank of Kansas City opens its Jackson Hole symposium today on the theme “Financial Innovation: Implications for Payments and Policy,” and its own framing release of 25 August 2026 names the innovations it means: “new digital payments systems, instant payments, cryptocurrencies, and stablecoins.” When the world’s most-watched central-banking forum puts stablecoins in its terms of reference, the documents those issuers publish about their reserves stop being a niche compliance artefact.

1. The distinction that everything else hangs on: attestation is not audit

Almost every argument about stablecoin backing goes wrong in the first sentence because the two words get used interchangeably. They are different products, produced under different standards, answering different questions.

An attestation is a photograph, not a film. It says that on a stated date, an accounting firm performed agreed procedures and found that the assets management said existed did in fact exist, at the values management asserted. It says nothing whatsoever about the day before or the day after. An issuer can, in principle, satisfy every attestation it has ever published and still have been under-reserved on 363 days a year. Nobody is alleging that of any major issuer; the point is that the document is not designed to rule it out.

The second thing an attestation usually does not do is opine on the entity. It opines on a reserve report. Group structure, intercompany lending, contingent liabilities, litigation exposure and going-concern risk generally sit outside its scope. Those are audit questions.

2. Read the reporting date first, and then work out how stale it is

Before the composition table, before the headline surplus, before anything: find the as-of date and count the days since. Quarterly attestations are typically published four to eight weeks after the date they describe. That gap is the single largest source of confident wrong statements about stablecoins.

This matters more the more volatile the reserve assets are. A reserve that is 80% short-dated Treasury bills barely moves in eight weeks. A reserve with meaningful allocations to gold, bitcoin or secured lending can move a great deal. If an issuer reports a surplus of $X as of 31 December and the reserve holds a few per cent in bitcoin, that surplus is a different number by the time you read it — possibly larger, possibly smaller, certainly not $X.

We have made a version of this error ourselves and published the correction: on 26 August we reported a fund’s assets using a figure struck a day earlier, before the underlying asset fell 7.6%, and had to restate it. A figure attached to a date is not a figure attached to today.

3. Check who signed it, and which entity they signed for

Three questions, in this order.

Which firm? A Big Four signature and a signature from a three-partner practice are not equivalent, whatever the standard says. This is not snobbery: the relevant differences are independence infrastructure, insurance, and how much reputational capital the firm has at risk if the report is wrong.

Which legal entity? This is the one readers skip and it is often the most informative line on the page. Large stablecoin groups have many entities. A report covering the issuer of the token is a different document from a report covering a holding company or a group. When Tether announced on 13 August 2026 that KPMG US had completed the first full financial-statement audit in its history, the audited entity named was Tether International, S.A. de C.V. — a specific issuer, not “Tether” as a colloquial whole. Read the entity name and then find out what it does and does not contain.

Under which standard? The same Tether announcement is a clean worked example of why this matters. The audit was reported as conducted to AICPA standards, with an unqualified opinion on the financial statements for the year ended 31 December 2025 and reserves exceeding liabilities by $6.814 billion. Those are strong facts. But the GENIUS Act sets PCAOB standards for licensed US issuers, and — the detail that decides how much weight the document can bear — as of publication the company had released neither the financial statements nor the opinion letter itself. We are relaying that as reported rather than as read: we have not seen the opinion, because it has not been published. An unqualified opinion you cannot read is a press release about an opinion. It may be entirely accurate. It is not yet a document you can check.

The Atlanta Fed’s Financial Markets Conference panel on what a stablecoin-and-tokenised-deposit world does to banking — a Federal Reserve source on the same question Jackson Hole is convening on this week:

https://www.youtube.com/watch?v=_R8p0M4mDwM

4. Read the composition table as a risk table, not an inventory

Reserve breakdowns are usually presented as a pie chart. Read them instead as a list of things that can go wrong, ordered by how quickly they go wrong. Four buckets, in ascending order of trouble.

Cash and short-dated government paper. Treasury bills, overnight reverse repo, government money-market funds. This is the boring part and it should be most of the total. Two things to check even here: duration, because a reserve holding two-year notes rather than three-month bills carries mark-to-market risk in a rate move; and whether the exposure is direct or held through a fund, which inserts a counterparty.

Secured lending. The issuer has lent reserve assets against collateral. Now you need to know: lent to whom, against what, at what haircut, and can it be recalled at 24 hours’ notice? In a redemption run, a secured loan is not cash and may not become cash quickly.

Commodities and digital assets. Gold and bitcoin appear in some reserves. They are real assets and they are volatile. Their presence means the reported surplus is a mark-to-market figure with a shelf life — which loops directly back to point 2.

Corporate paper, related-party exposure and “other investments.” The residual line. Historically this is where the problems have lived, and it is where any related-party exposure will be sitting if it is disclosed at all. A large, thinly described “other” bucket is the most important thing on a composition table, and it is invariably the smallest slice of the pie chart.

5. Find the surplus line, and then ask what it is a surplus of

Most reports lead with something like “reserves exceeded liabilities by $X.” Three follow-up questions.

Which liabilities? Tokens in issue, or all liabilities of the entity? Those can differ substantially. A surplus over tokens in issue tells you about redemption coverage. A surplus over total liabilities tells you about solvency. Both are useful; they are not the same claim.

Is it a buffer or is it profit not yet distributed? An excess reserve that the group can upstream at will is a weaker protection than one contractually ring-fenced. Read the notes on whether the surplus is committed.

How does it compare to the last four reports? A single surplus figure is nearly meaningless. The trend in the ratio of surplus to tokens in issue is the number that carries information — and it is the one that has to be assembled by hand, because no issuer plots it for you. We covered a halving of one issuer’s buffer in this report; the level was fine, the direction was the story.

6. Redemption terms are the part that actually binds

A perfectly reserved stablecoin you cannot redeem is, from your side of the table, an unsecured claim. Check four things, none of which appear in the attestation itself — they are in the terms of service, which is why almost nobody reads them.

Who may redeem? Most large issuers redeem only for verified direct clients above a minimum size. Everyone else exits through a secondary market, at whatever price that market offers. Your redemption right may be zero.

What is the minimum, and the fee? A minimum of $100,000 and a redemption fee mean the peg is defended by arbitrageurs above that size, not by you.

How long does settlement take? Same-day and T+5 are different products in a stress event.

What can the issuer suspend, and on what notice? Nearly all reserve the right to suspend redemptions. Read the trigger.

If you want the layer beneath this — how the value actually moves once it leaves the issuer — our companion guide on how stablecoin payment rails work covers the plumbing.

7. What the GENIUS Act changed, and what it did not

The GENIUS Act created a federal framework for payment stablecoins, with reserve requirements, disclosure obligations and an audit standard for licensed US issuers. Two things follow that are constantly conflated.

First, the statute’s standards apply to issuers licensed under it. A large offshore issuer publishing attestations is not thereby non-compliant with a regime it is not inside; it is outside the regime. Whether that is comforting depends entirely on what you think the regime is for. The distinction matters for MiCA in Europe too, which runs on different requirements again.

Second, the implementing rules have run late, which we covered when the July deadline passed in this report. Until final rules land, “GENIUS-compliant” in marketing copy is an aspiration rather than a status, and should be read as such.

A sceptical counterweight on exactly that question, published 14 July 2026 — dated so you can grade the call against what has happened since:

https://www.youtube.com/watch?v=dL6DSjPRz7E

The five questions, in order

One. What is the as-of date, and how many days ago was that? Two. Which firm signed it, for which legal entity, under which standard — and can I actually read the report, or only a description of it? Three. What percentage sits outside cash and short-dated government paper, and what is in the residual bucket? Four. Is the surplus measured against tokens in issue or total liabilities, and which way has that ratio moved across the last four reports? Five. Under the terms of service, can I personally redeem — and if not, who is defending the peg on my behalf?

If a report will not let you answer all five, that is itself the answer. It does not mean anything is wrong. It means the document is not built to tell you, and you should size your exposure to what you actually know rather than to what the headline implies.

Four errors we see constantly

Treating a mark-to-market surplus as a fixed cushion. If reserves hold volatile assets, the surplus is a price, not a balance.

Netting across entities. Assets in one subsidiary do not automatically stand behind tokens issued by another. The corporate structure is load-bearing.

Reading “cash and cash equivalents” as cash. The category is broad by design and can include instruments that behave nothing like a bank balance in a stress event.

Confusing an audit announcement with an audit. The Tether example above is the cleanest available: a real milestone, a real firm, a real unqualified opinion — and, as reported, no published statements or opinion letter to inspect. Both halves are true and you should hold both.

Why a bitcoin site cares

Three reasons, none of them ideological. Stablecoins are the settlement layer for most bitcoin trading, so an issuer’s health is a market-structure question, not a rival-asset question. Stablecoin reserves have become a structurally significant holder of short-dated US government paper, which means the monetary-policy question and the payments question have stopped being separable — which is, presumably, exactly why the Kansas City Fed is spending three days on it this week. And the reflex a reserve report trains is the one this desk uses on everything: find the date, name the entity, check the window, and read the residual line.

The Jackson Hole agenda publishes tonight at 8:00 p.m. EDT. If stablecoins get a paper of their own rather than a passing mention, this guide is the prerequisite for reading it.

Investment disclaimer. This article is journalism and education, not investment advice. Bitcoin, stablecoins and other digital assets carry real risk of total loss, including counterparty and redemption risk. Nothing here is a recommendation to buy, sell or hold any asset or to use any issuer. Figures are as of the dates stated. Do your own research and consider taking advice from a licensed professional before making any financial decision.