Encyclopedia Stablecoins · Entry 34
Attestations, audits and proof of reserves answer different questions
In this article
At a glance
Key facts
| Fact | Detail | Source |
|---|---|---|
| Scope first | Identify the assertion and criteria actually examined. | [2][1] |
| Point-in-time limit | A snapshot does not show what happens to assets afterward. | [1] |
| No equivalence | PCAOB’s investor advocate cautions that proof-of-reserve reports are not audits. | [1] |
Translate the label into a question
Ask, “What exactly did this engagement test?” A reserve assertion might compare assets and token circulation on named dates. A broader financial-statement audit addresses a different body of information. A proof-of-reserves exercise can range from published wallet evidence to a service provider performing selected procedures.
For any report, identify the preparer, independent practitioner if present, criteria, subject matter, dates, conclusion and exclusions. This is more informative than promoting “audited” or dismissing “attested” without reading the underlying work. Different engagements can be useful for different questions.
Asset existence is only one part of solvency
A wallet can visibly hold an asset while obligations remain elsewhere. In an illustrative example, a custodian shows $100 million in assets and reports $80 million of customer balances. If another $30 million liability is outside the exercise, the displayed $20 million surplus does not describe the complete position.
This example is arithmetic, not an allegation about a named business. Its point is to ask whether the liabilities population is complete, assets are controlled and unencumbered, and the claims being compared belong to the same entity and date. A token ledger cannot independently answer every off-chain question.
Use a short evidence checklist before accepting an assurance label
Identify who made the assertion, who examined it, the reporting date, the assets and liabilities included, and the conclusion actually expressed. A report about reserves at one date does not establish every later balance or every operational control.
Paxos provides a concrete distinction: its portfolio composition reports released promptly after month-end are self-reported and described as not independently reviewed, while independent examination documents are separate. Preserve those labels when citing the evidence instead of calling every reserve document an audit.
Direct answers
Questions people ask
Can an attestation be useful?
Yes, when its subject matter, criteria, dates and conclusion answer the question being asked. It should be described within that scope.
Does proof of reserves prove solvency?
Not on its own. Asset evidence may omit liabilities, restrictions and other conditions needed to assess whether obligations can be met.
Inspect the evidence
The answer and key facts have stable claim links. These records retain the scope and qualification when reused.
A financial-statement audit, an attestation over a specified reserve assertion and a proof-of-reserves exercise have different scopes. The label alone does not establish which assets, liabilities, controls or dates were examined. Proof of reserves must not be represented as a full audit or as a guarantee of solvency.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T18:26:58.075Z.
Link to this claimScope first: Identify the assertion and criteria actually examined.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T18:26:58.075Z.
Link to this claimPoint-in-time limit: A snapshot does not show what happens to assets afterward.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T18:26:58.075Z.
Link to this claimNo equivalence: PCAOB’s investor advocate cautions that proof-of-reserve reports are not audits.
Scope: Stablecoins · data through 2026-10-02. Verification: verified · 2026-10-02T18:26:58.075Z.
Link to this claimRevision history
- — First publication after primary-source research and independent automated verification.
- — Expanded explanation: Use a short evidence checklist before accepting an assurance label. Worked examples are illustrative; source checks and independent verification are recorded separately.
On the Inspect a stablecoin path · Learn next: Stablecoin freezes and issuer control
Source register
Sources and references
Retrieval dates and locators are recorded individually.- Investor advisory on proof-of-reserve reportsPCAOB Office of the Investor Advocate
Proof of reserves is not an audit; obligations and rights may be omitted.
Locator: PoR Reports Are Not Audits; Limitations · Retrieved: 2026-10-02T14:41:32.877368+00:00Open source - USDC and EURC transparencyCircle
Reserve categories, dated third-party reports, distinction between circulation and assets.
Locator: Balances; Monthly assurance and transparency · Version / scope: Response SHA-256 c309c9d5d4475f82930927a407a8e895e9e7a9e0da0de6901562892c33385209 · Retrieved: 2026-10-02T14:38:29.678364+00:00Open source - PayPal USD TransparencyPaxos
PYUSD issuer disclosures and dated reserve attestations.
Locator: Reserve reports; Issuer disclosures · Retrieved: 2026-10-02T17:03:43.402ZOpen source
Research and drafting use AI assistance. A separate automated review checks claims against primary sources; no external expert or named human review is implied. Publication, substantive editing, source retrieval and verification are recorded separately. This version was independently checked by an automated reviewer on 2 October 2026.
Editorial method and correctionsDegrees of Satoshi editorial project. “Attestations, audits and proof of reserves answer different questions.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/attestations-audits-proof-of-reserves/