Why reserves matter
A fiat-backed stablecoin is only as sound as the assets behind it. The issuer says each token can be redeemed for a dollar, and the reserve is what is supposed to make that true. Holders cannot see inside the issuer’s accounts, so they depend on published reports. Reading those reports well means knowing what they cover and, just as important, what they do not.
This article focuses on the disclosures themselves. The broader comparison of designs is in the stablecoins explained pillar, and the real-world consequences of weak backing are covered in the article on depegging events.
What a reserve report typically shows
Issuers usually publish periodic summaries. While formats vary, they commonly describe:
- Total tokens in circulation at a stated date.
- Total reserve assets at that date, often with a breakdown.
- Asset categories, such as cash and bank deposits, short-term government debt, repurchase agreements, money market funds, or other holdings.
- Sometimes the custodians or banks involved, though not always in detail.
The key comparison is whether reserves are at least equal to the tokens outstanding. If an issuer reports 5,000,000 tokens and 5,100,000 dollars of assets, the reserves cover tokens by a margin of 100,000, or 2 percent of the tokens. If assets were 4,900,000, there would be a shortfall of 100,000. These figures are illustrations only.
Attestation versus audit
The words are often mixed up, but they mean different things.
An attestation is a limited engagement in which an accounting firm checks specific statements against agreed procedures, such as confirming that on a given date the stated assets matched the stated token count. It provides a narrower level of assurance than a full audit, and it covers only what the engagement defines.
An audit of financial statements is a broader examination that follows auditing standards over a full period and gives an opinion on whether the statements are fairly presented.
Neither is a guarantee. A snapshot on one date says little about the days between. Terminology also varies by country and by firm, so it is worth reading the actual scope paragraph in the report, not only the headline.
What the report can leave out
Even a clean-looking report has gaps. Questions worth asking:
How liquid are the assets? Cash can be paid out the same day. Longer-term debt can be sold, but possibly at a loss if prices have moved, and some assets cannot be sold quickly. In a rush of redemptions, liquidity matters as much as the total.
How concentrated are they? If a large share of cash sits at one bank, trouble at that bank becomes trouble for the stablecoin. This is a form of counterparty risk that a simple total does not reveal.
Who holds the assets? Reserves may be held by custodians, and the legal protections for holders if the issuer fails are not always clear.
Are there other obligations? Loans, other liabilities or related-party exposures can affect whether the reserve is truly available to token holders.
Who can redeem? Backing is meaningful only if redemption works. Minimum sizes, fees, verification requirements and delays all affect whether an ordinary holder can turn a token into a dollar at par. Many holders can only sell on an exchange, where the price may differ from par.
What is the timing? Reports come monthly, quarterly or at other intervals, often with a delay. A lot can change before the next one.
Reserves versus proof of reserves
The phrase “proof of reserves” is used for a different tool, usually tied to exchanges that hold customer crypto. It uses on-chain data and cryptographic methods to show that assets exist, with the aim of showing they cover customer balances. That approach has its own limits, discussed in the article on proof of reserves, and it is not a substitute for a full accounting of liabilities. For stablecoins backed by bank assets, the main evidence comes from accounting firms and regulators, not from the blockchain alone.
Crypto-backed designs
For overcollateralized tokens, collateral can usually be viewed on a blockchain in real time. That is more transparent than a monthly report, but the risks sit elsewhere: collateral price swings, software errors and liquidation mechanics. Transparency of balances does not remove those risks.
A simple checklist
When looking at any stablecoin, consider:
- What exactly backs it, in plain categories?
- How often is it reported, and by whom?
- Is the report an attestation or an audit, and what is its scope?
- How liquid and how concentrated are the assets?
- Who can redeem, at what cost, and how fast?
- What does the issuer’s regulator, if any, require?
If the answers are hard to find, that is itself information.
Limits of this approach
Reading reports cannot remove risk. Disclosures can be incomplete, can be out of date, and can fail to predict stress. Issuers can also change their policies. Treat every stablecoin as carrying some chance of losing its peg, avoid holding more than you can afford to lose, and be sceptical of any claim that a token is entirely risk-free.
This article is educational and is not financial, tax or legal advice. Crypto markets are volatile and outcomes are uncertain.