What stablecoins and Tether are
A stablecoin is a cryptocurrency whose price is deliberately held still, almost always at one dollar, and behind that stillness stands a company saying it holds a dollar of assets for every token. That is why work gets settled in Tether rather than Bitcoin: the price movement is taken out of the payment, while the risk is not removed at all, only moved from the market to the issuer.
- Lesson 3 of 8
- Beginner
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One token on one pan, the reserve claim on the other
What you are holding
- a token on a network, transferable in minutes
- a price that is still the same when you convert
- a claim on the issuer, not a deposit at a bank
- with no direct redemption for a retail holder
What the issuer says stands behind it
- assets a company keeps
- a report published at stated intervals
- a bank or a fund that holds those assets
- the power to freeze an address when asked
The pans stay level only while the issuer redeems and the market believes. Neither of those two is written in the token code.
Last checked: Facts and tool names in this lesson are re-checked against their sources on this date.
What exactly a stablecoin holds still
A stablecoin is a token on a blockchain network whose price is deliberately held at a fixed number, and in practice that number is almost always one US dollar. The two names you see most are Tether, ticker USDT, and USD Coin, ticker USDC.
The price staying still is not a property of the token. Nowhere does the code of these tokens guarantee the number one, and it could not. What holds the price in place is a loop: the issuer says it keeps a dollar of assets for every token and stands ready to take the token back and hand over the dollar; as long as the market believes that, anyone who sees the token below a dollar buys it and redeems a dollar from the issuer, and that buying pulls the price back up.
Now the part that is rarely said and that changes everything. That direct redemption is not for you. Large verified accounts at the issuer can turn tokens back into dollars; somebody holding a hundred dollars of Tether on a phone does not do that and sells on an exchange instead. So what you hold is a claim on the issuer, connected to the dollar through a market, rather than the dollar itself or a deposit at a bank.
There is a second family that holds no asset backing and defends the price with a mechanism instead. This lesson is not about those, and here is the reason: when the backing is a mechanical claim rather than a balance sheet, the question of who has checked it needs a different answer. Everything below is about asset-backed stablecoins only.
Why an Iranian freelancer settles in Tether and not in Bitcoin
Take a three hundred dollar invoice. The client agrees today, pays the day after, and you convert it to rials a week later. If that whole path runs on a volatile coin you have entered a market position without asking for one: you might receive three hundred and forty dollars, and you might receive two hundred and sixty.
What a stablecoin does is exactly this and no more: the number you agreed on is still that number at the moment you convert. Settlement needs stillness, not opportunity. Investing is a different conversation and this lesson says nothing about it.
You can see the same thing in real catalogues. The page on routes for buying AI services on this site describes several intermediaries in their own terms, and one pattern repeats in every one of them: OpenRouter sells credit for cards, AliPay and USDC; Bitrefill sells virtual prepaid cards for Bitcoin, Ethereum, USDT, USDC and several more; BitCall sells virtual numbers for Bitcoin, Ethereum and USDT on two networks. The stable token is on all three lists.
Our position is plain. For settling work, a volatile coin is the wrong instrument, and whoever settles in one is doing two things at once while having agreed to only one of them. But read that sentence with its boundary: a stablecoin removes the price movement and does not remove the risk. The risk moves out of the market and into two other places, the issuer holding the reserves and the network the transfer runs on.
Two instruments, for two different jobs
A volatile coin
- its price moves between the deal and the conversion
- accepting it means accepting a market position
- it depends on no company to hold its price
- for settling an invoice it is the wrong instrument
A stablecoin
- the number you agreed on survives to the conversion
- it is on nearly every intermediary payment list
- its risk is the issuer and the network, not the price
- a balance in it can be frozen
There is no winner here. The question is not which is better, it is whether the job in front of you is settlement or holding.
What Tether and USDC each claim, and who checks it
Both issuers have a page called transparency, and we read both on the date printed at the top of this lesson. What those two pages say is not the same thing, and the difference sits exactly where most articles walk straight past.
Tether transparency page says that all Tether tokens are pegged one to one with a matching fiat currency and are backed one hundred percent by Tether reserves, and that information about tokens in circulation is typically published daily; the same page adds that the issuer assets exceed its liabilities. We quote those sentences from that page as they stand, because they are the issuer claim, and we neither confirm nor deny them.
Circle transparency page says several more specific things: USDC reserve holdings are fully disclosed weekly along with mint and burn flows, a Big Four accounting firm provides monthly third-party assurance that the value of the reserves is greater than the amount of USDC in circulation, and those reports are prepared according to the attestation standards of the American Institute of Certified Public Accountants. The same page says the majority of the reserve is held in the Circle Reserve Fund, ticker USDXX, an SEC-registered government money market fund managed by BlackRock, with daily independent reporting on the portfolio available through BlackRock. Separately, Deloitte is the independent auditor of Circle itself.
| Issuer | What gets published | How often | Who checks it |
|---|---|---|---|
| Tether | Tokens in circulation, plus a reports and reserves page | Typically daily | The issuer own reports on that page |
| USDC | Reserve composition and mint or burn flows | Weekly, plus monthly assurance | A Big Four firm, to AICPA attestation standards |
Now the distinction worth knowing. An attestation means an accountant looked on a stated date and said these assets existed at that moment and were not less than this amount. That is not the same as a continuous audit and it claims nothing about what happened between two reports. The word audited in marketing usually points at the company own financial statements rather than at every individual token, and that one small substitution turns a true sentence into a misleading one.
And here is what we do not claim: we have read none of the underlying reports and we hold no opinion on their accuracy. What we did was open the issuers own pages and write down what each says. The gap between the company says this and this is true is the whole of what this section is trying to give you.
What the screen shows you and what sits under it
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1
The number one
The only thing a user sees. On ninety nine days out of a hundred that is enough, which is why the rest is never looked at.
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2
What the reserve is made of
Cash, treasuries, a bank deposit or something else. Each behaves differently on a bad day.
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3
Who checks it and how often
Assurance on a stated date is not a continuous audit. The gap between two reports is a gap.
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4
Whether you can redeem at all
Direct redemption belongs to large verified accounts. A retail holder sells on a market, and a market on a bad day has its own behaviour.
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5
The power to freeze
The same centralisation that holds the price also allows acting on one specific address.
None of the layers below the waterline touch the price until the day they do. On that day they all touch it at once.
The day one dollar was eighty eight cents
In March 2023 Circle said that 3.3 billion dollars of its 40 billion dollars of USDC reserves sat at Silicon Valley Bank, a bank that was shut down in those same days. USDC lost its one to one peg with the dollar and fell as low as 0.88 dollars early on Saturday 11 March. Those numbers come from the Reuters report carried by CNN, which attributes the price to CoinGecko.
Over that weekend nothing in the token code broke. The network ran, transfers went through, the contract did what it always does. What moved was a balance sheet, and a balance sheet has counterparties: a bank. The price came back in the days that followed, but what those two days showed stayed where it was.
The practical lesson for anyone working with stablecoins is one sentence: a peg to the dollar is a claim about a balance sheet and not a law of physics. Any claim about a balance sheet is exactly as strong as the weakest counterparty on it. Which is why holding a large amount for a long time in one token is a separate decision from using that same token to settle an invoice within a few days.
What the issuer can do that your bank cannot
A common assumption is that a crypto balance is beyond anyone reach. For a token issued by a company that assumption is not true, and the company does not hide it either.
On 23 April 2026 Tether wrote in its own newsroom that, in coordination with the US Office of Foreign Assets Control and law enforcement, it had frozen more than 344 million USDT across two addresses. The same post says Tether maintains a zero-tolerance policy toward criminal use, has long followed OFAC guidelines regarding the Specially Designated Nationals list, and works with more than 340 law enforcement agencies in 65 countries, freezing assets on request so they cannot move further.
So keep two things apart, because merging them is the source of most confusion in this field. The network guarantees that a transfer you made does not come back; that is true and the next lesson in this track is about it. The network does not guarantee that your balance in an issuer-run token cannot be frozen. Those are separate properties, and people keep deriving one from the other.
On the legal status of these instruments in Iran, the most honest sentence we can write is this: the rules change, we are not lawyers, and this lesson proposes no way around any restriction. What this page does is explain how the instrument itself behaves. Deciding where and how to use it is between you and your own legal advice.
The fast path, with AI
Every article says look at the backing, and almost nobody opens the issuer transparency page, because it is written in the language of accounting and reading it takes patience. What a language model does well here is translating that text into three lines, without being asked for an opinion. The difference between this and asking is this safe? is everything: the first answers from a text, the second answers from nothing. A fast, cheap model of the Flash class is enough, and our current pick is listed in the AI section of this site.
- Open the issuer own transparency page, not a news site and not an exchange. Both pages are linked earlier in this lesson.
- Copy the text of that page together with the date printed on it. The date matters, because the whole answer hangs on it.
- Send the prompt below with the copied text. Do not ask the model whether it is safe; ask it only what is claimed and what is not.
- Check the answer against the original page. Any sentence the model wrote that you cannot find in the text gets deleted right there.
Copy-ready recipe
The prompt, with the transparency page text attached:
This is the text of the transparency page of the issuer of {token name},
read on {date}. Answer only from this text and add nothing from your
own knowledge:
1) What exactly is claimed? Quote the sentences verbatim.
2) Who checks it and how often? If the text names no firm, say it does not.
3) Is this report an attestation or an audit? Write the word the text
itself uses.
4) What is the reserve made of and where is it held?
5) What is NOT claimed anywhere in this text? This item is the important one.
Finish with: "as of {date}, this page says this."
Give no opinion on whether this token is safe.Before you trust the output: Two limits, and without them this path does more harm than good. First, the output is a summary of the issuer claim and not a confirmation of it; if the model writes the backing is complete, that sentence belongs to the page and not to reality, and all you have learned is what is claimed. Second, pages change: the answer you got today carries a date and in six months it is a stale quotation, so keep that date beside the answer. And one thing that always gets missed: if the model writes a number you cannot find in the text, do not correct it and do not keep it, delete it.
AI in this kind of work
On this topic the most useful thing a model does is read the boring texts nobody reads: an issuer transparency page, the terms of a payment intermediary, a product description. The thing not to hand it is the exact opposite: anything that depends on live data, from today price to how much backing a token has right now.
Tools that actually help
- Gemini For compressing a transparency page into a few lines, on its fast, cheap model. Google own page says the Gemini web app runs in over 230 countries and territories, and Iran is not on that list.
- Claude For when the text is long and legal and you want it explained piece by piece. Iran is on neither of Anthropic two supported-countries lists, and we read that on their own page.
- ChatGPT The same two jobs. We make no claim about access from Iran: OpenAI supported-countries page returns 403 to this server.
Where it backfires
Three risks, and the first costs more than the others. A language model does not know today price or today state of the reserve, but ask and it will answer, and the answer will look confident; a number that comes out this way is either months old or was never real, and the tone will not tell you which. The right move is to change the question: instead of how much backing is there now, ask what does this text say and hand it the text yourself. The second risk is the question is this safe; no model has the data for that answer, and what comes out has the shape of advice with nothing behind it, which in money matters is the most dangerous shape an empty sentence can take. The third risk is yours: the text of an invoice or a contract carrying an amount and a client name has gone to another company the moment it enters a chat, and whether content is retained or feeds training depends on the plan and settings of that service, which the companies write down, including on Google privacy page for the Gemini apps. Strip the amount and the name before you copy; the job does not need them.
Sources: Google: Gemini Apps privacy Where you can use the Gemini web app Anthropic supported countries
Where this advice stops
This lesson covers only asset-backed stablecoins and says nothing about the algorithmic family, where the questions are different. The second boundary matters more: nowhere on this page is there advice about holding money. Settling an invoice within a few days and holding a large amount for months are different jobs with different risks, and on the second one we offer no opinion. The third boundary is time: everything in the third section was read from the issuers own pages on the date at the top of this page, and those pages change, so if you are deciding today, open the page yourself. And a fourth, for the Iranian reader only: the regulatory position of these instruments is not fixed, we are not lawyers, and we propose no way around any restriction.
From our own work
The price you see right now on the service pages of this site is, in practice, the Tether price. Our pricing engine in inc/pricing.php keeps a base dollar price for every plan and builds the rial figure from the live Tether to toman rate; the rate is read from Nobitex first, then Wallex, then Tabdeal if the previous one does not answer, cached for ten minutes, with the last healthy rate stored separately so that a page never loses its price if all three go dark. It also has a sanity band, from twenty thousand to three million toman per tether, whose job is to stop a broken API number from rewriting every price on the site. What writing that code taught us is the sentence in the second section: in practice, for digital services in Iran, the dollar is the tether, and we use that rate like everybody else. The second point came from the wallet top-up layer: Tether is not one asset for us, it is two. USDT on the Tron network and USDT on the BNB network are separate keys in our settings, with separate addresses and a different number of decimal places, and a payment made on a network we do not read does not exist for us at all. We deliberately do not print today rate here, because a stale number is worse than no number.
Real follow-up questions
Is Tether the same thing as a dollar?
No. Tether is a token whose issuer says it holds a dollar of assets for each unit, and whose price is connected to the dollar through a market. The difference is invisible on an ordinary day and visible on a bad one, the way it became visible for USDC in March 2023.
Which is better, Tether or USDC?
For settlement the practical answer is: whichever your counterparty accepts and which has liquidity where you convert. If by better you mean the transparency of the reporting, the table comparing what each issuer publishes shows the difference and leaves the judgement to you. We make no recommendation between the two.
Some places pay yield on a stablecoin; where does that come from?
Wherever a yield is paid on a stablecoin, it does not come from the token; it comes from another product in which somebody does something with your money, and that product carries its own risk. This lesson is not about those products and we make no recommendation about them; just know that the token being stable says nothing about that product being safe.