# What backs the dollar on an on-chain venue

A stablecoin balance is a claim on an issuer you are usually not a customer of, held in contracts with admin keys. What you rely on, document by document.

*https://predictionmarkets.tools/guides/what-backs-an-on-chain-venues-dollar · background to Prediction Market Venues*

**Answer:** Several parties you never signed up with. The issuer redeems only for its own verified customers: Tether with a 100,000 dollar minimum, Circle only for Circle Mint account holders. Both can freeze addresses, and neither supports a wrapped or bridged copy of its token. The venue may lend your collateral out for yield, as Predict.fun does through Venus, and its contracts carry admin roles that an audit describes within a stated scope and does not remove.

On a regulated exchange a dollar in your account is a dollar at a clearing house or a broker, held
under rules a regulator wrote. On an on-chain venue the balance on your screen is a token, and the
token is a promise from a company you have probably never dealt with, sitting in contracts that a
second company administers, sometimes lent onward to a third. None of those parties is hidden. Each
one writes down what it promises and what it reserves, and the documents are short enough to read
before you deposit.

This page reads them in the order the money passes through them: the stablecoin issuer's terms,
the question of whether the token in your wallet is the issuer's token at all, the venue's use of
the collateral while you wait, and the admin roles and audits around the contracts. It describes
what each document says. It does not rate a token or a venue, and nothing here is a statement that
any of them is sound or unsound.

## How it works

### The issuer: a promise to its customers, not to you

**Tether.** Tether's Token Terms of Sale and Service, last updated on 26 February 2026, say that
"In order to cause Tether Tokens to be issued or redeemed by Tether, you must be a verified customer
of Tether", and that the right to purchase or redeem "is a contractual right personal to you".
Tether's fee page sets the threshold for becoming one: a minimum acquisition or redemption of
**100,000 dollars**, a redemption fee of **the greater of 1,000 dollars or 0.1%**, and a
non-refundable verification fee of **150 dollars** in Tether tokens. The same terms reserve the
right to bar transactions with US persons other than eligible contract participants Tether
agrees to.

On what stands behind the token, the terms say each token in circulation "is 100% backed by an
amount of assets ('Reserves') equal to the stated value", that the reserves "are comprised of cash,
cash equivalents and other assets and may include loan receivables and other assets from
Affiliates", and that the tokens are not legal tender and "are not subject to Federal Deposit
Insurance Corporation or Securities Investor Protection Corporation protections".

**Circle.** Circle's USDC Terms, last updated on 15 October 2026, divide holders in two. A holder
with a Circle Mint account can mint and redeem. A holder without one "may not redeem USDC with
Circle unless and until you open a Circle Mint account", and the terms add: "Users Type B are not
customers of Circle". Circle says the reserves are held "with U.S. regulated financial institutions
in segregated accounts apart from Circle's corporate funds", that it may hold them in
interest-bearing instruments, and that "you are not entitled to any interest or other returns
earned on such funds". USDC "is not subject to deposit insurance protection".

So the redemption at one dollar that both issuers describe is a redemption for their account
holders. A trader who deposited a stablecoin on a prediction market and wants dollars back
typically gets them by selling the token to somebody else, an exchange or a buyer on a pool, at the
price that somebody offers. Circle's terms say as much: it "cannot control how third parties quote
or value USDC".

### Both issuers can freeze

Tether's terms list, among the sanctions for a prohibited use, "freezing or confiscation of any ...
Tether Tokens" and "blacklisting any Digital Tokens Address which holds Tether Tokens". Circle's
terms reserve the right to "block" USDC addresses and say that "Circle reserves the right to block
the transfer of USDC to and from an address on chain as permitted under the blocklisting policy".
A token's issuer can therefore stop a balance moving whether or not the venue holding it agrees.

### Is the token in your wallet the issuer's token at all?

Both issuers draw the line at their own contracts. Tether's terms: a third party may create a
token "which claims to be an alternative version of Tether Tokens, such as by 'wrapping' or
'bridging' Tether Tokens. These Digital Tokens are not Tether Tokens," they "cannot be redeemed
with Tether", and Tether accepts no liability for them. Circle's: it "supports only USDC and is
under no obligation to support any copies of USDC or wrappers".

Which contract is the issuer's is a published fact. Tether's supported-protocols page, read on 23
October 2026, gives a USD₮ contract address for Ethereum, Avalanche, Celo, Kava and other chains. It
lists BNB Smart Chain too, and the only contract address it gives there is for XAU₮, its gold
token. A venue's documentation that says "USDT on BNB Chain" therefore does not by itself tell you
that the token is one Tether's page lists; the contract address does, and the issuer's list is
where to check it.

Some venues add a layer of their own. The [Polymarket](https://predictionmarkets.tools/tools/polymarket) card records its
collateral as pUSD, an ERC-20 backed by USDC that is wrapped and unwrapped through Polymarket's
own contracts. On Circle's terms that is a wrapper, which Circle has no obligation to support; what
gets you from pUSD back to USDC is Polymarket's contracts and the pool behind them, set out step by
step on [how money gets out](https://predictionmarkets.tools/guides/how-money-gets-out).

### The venue: where the collateral goes while you wait

[What your money does while you wait](https://predictionmarkets.tools/guides/what-your-money-does-while-you-wait) notes that on a
non-custodial venue nobody usually earns a rate on locked collateral. Predict.fun, on BNB Chain, is
the exception and says so. Its Yields page, last updated on 29 January 2026, says "all USDT
collateral is routed to earn interest" in the USDT pool of Venus Protocol, which it calls a
decentralized money market, with
yield distributed weekly from on-chain snapshots of open positions, "no fixed rate", and "a
management fee of 10% on yield generated".

The same page carries the cost in its disclaimer. If the Venus pool's utilisation crosses a
threshold there is "little to no floating liquidity", and "users with open positions on
yield-bearing markets may be unable to claim winnings for a short period of time". The page says
crunches have historically resolved within a day, and that Predict.fun has the right to withdraw
from Venus while some liquidity remains.

Cyfrin's audit of those contracts, dated 18 February 2026 for work done between 21 and 27 January,
is specific about the tight case. Its one medium-severity finding is that the emergency function
meant to switch Venus off during high utilisation itself tries to withdraw from Venus, and so
"is unusable during the exact emergency it was designed to handle". The report records the finding
as acknowledged, with Predict.fun's reply that the design change "is quite huge and probably not
justifiable for a redeploy". A low-severity finding, also acknowledged, concerns yield
calculations if the value of Venus's tokens ever falls, "due to bad debt, exploits, or other losses
in Venus protocol". Whether a later deployment changed either is not in the documents read for this
page.

### The admin keys, and what an audit does and does not cover

A venue's contracts usually have administrators. The February audit describes a top admin role
that "controls transfer whitelisting and can gate split and merge operations", and a yield-manager
role that "manages Venus integration, including connecting vTokens, claiming yield, and enabling or
disabling the yield mechanism". The April audit, of Predict.fun's price-market contracts, names the
multisig that holds the top admin role on BNB Smart Chain, notes that the deployment script left
the deployer's own address holding the same role, records the team's confirmation that a later
multisig transaction revokes it, and recommends verifying that on chain. What the
admin role can do to a price round is on [what a crypto price contract settles
on](https://predictionmarkets.tools/guides/what-a-crypto-price-contract-settles-on).

An audit is a reading of named files on named days. Both Cyfrin reports carry the same
disclaimer: "A security audit by the team does not endorse the underlying business or product. The
audit was time-boxed and the review of the code was solely on the security aspects of the in-scope
code being audited." The February scope lists five files, three yield-bearing contracts and two
conditional-token ones; the April scope lists three Solidity contracts and five workflow files. Code outside those
lists, and code deployed after the reviewed commit, is outside what the report says.

## What it costs

- **Redeeming with Tether:** a 150 dollar verification fee, a 100,000 dollar minimum, and the
  greater of 1,000 dollars or 0.1% per redemption, from its fee page.
- **Redeeming with Circle:** one dollar per USDC "less fees where applicable", for Mint account
  holders. The terms say Circle charges nothing for minting or receiving USDC in a Mint account
  except as its fee schedule discloses, and does charge for sending USDC on chain out of it.
- **Yield on Predict.fun:** 10% of the yield generated, taken by Predict.fun; the rate itself
  floats with the Venus pool.
- **Everything else** is a spread: what a buyer pays for your token, and what a pool charges to
  swap a wrapper back. [How money gets out](https://predictionmarkets.tools/guides/how-money-gets-out) works through those for the
  venues in this catalogue.

## What you can do about it

**Check the contract address of the collateral against the issuer's list.** The token's name is
not evidence. If the venue's token is not on the issuer's page, it is a copy, a wrapper or a bridged
token, and its value back in dollars depends on whoever issued that.

**Know how you would turn it into dollars.** Unless you hold a Mint account with Circle or a
verified account with Tether, your exit is a sale to a third party. Find out which one before you
need it, and what it charges.

**Read the venue's yield page before the market page.** If the venue lends collateral out, the page
says where, at what fee, and what happens to claims when the pool is short. On Predict.fun the
answer to the last question is a delay, in the venue's own words.

**Read an audit's scope and status table, not its summary.** The scope says which files were read;
the status table says which findings were fixed and which were acknowledged and left. An audit of
one integration says nothing about the next.

**Find out who holds the admin roles.** The audit names the addresses; the current holders are
on-chain state. A multisig is several keys rather than one, and it is still somebody's.

**Keep the venue balance to what your positions need.** Every party above applies to a balance
that sits there between trades. Where your own keys sit in all this is on [where your key
lives](https://predictionmarkets.tools/guides/where-your-key-lives); the venues themselves, with their collateral and custody, are
in the [prediction market venues](https://predictionmarkets.tools/categories/prediction-market-venues) listing.

## Tools this bears on

- [Polymarket](https://predictionmarkets.tools/tools/polymarket.md) — Self-custody event contracts on an on-chain order book, resolved by the UMA oracle.
- [Limitless](https://predictionmarkets.tools/tools/limitless.md) — Event contracts on Base, collateralised in USDC, traded on a central limit order book.
- [Myriad](https://predictionmarkets.tools/tools/myriad.md) — Multi-chain event markets on an order book, some on an AMM, paid in stablecoins or points.

## FAQ

### Can I redeem the USDT or USDC I hold on a prediction market for dollars with the issuer?

Only if you become the issuer's customer. Tether's terms say you must be a verified customer of Tether, and its fee page sets a 100,000 dollar minimum and a 150 dollar verification fee. Circle's terms say only holders with a Circle Mint account can redeem, and that holders without one are not Circle's customers. Everyone else sells to somebody else.

### Is a bridged or wrapped stablecoin the same as the issuer's token?

Not on the issuers' own terms. Tether says wrapped or bridged versions "are not Tether Tokens" and cannot be redeemed with it. Circle says it supports only USDC and is under no obligation to support copies or wrappers. Whether a token is the issuer's is a matter of its contract address, checked against the issuer's published list.

### Can a stablecoin issuer freeze my balance on a prediction market?

Both issuers reserve the power. Tether's terms list freezing tokens and blacklisting any address that holds them among its sanctions for prohibited use. Circle's terms reserve the right to block USDC addresses and to block transfers to and from an address on chain under its blocklisting policy.

### What does a smart contract audit tell me about a venue?

What the named auditors found in the listed files, over the stated days. Cyfrin's reports on Predict.fun say the audit was time-boxed, limited to in-scope code, and is not an endorsement of the business. Each report lists its scope file by file, and which findings were resolved and which were only acknowledged.

## Sources

1. [Tether Token Terms of Sale and Service](https://tether.to/en/legal) — Tether Operations, S.A. de C.V., 2026-02-26
2. [Fees](https://tether.to/en/fees) — Tether Operations, S.A. de C.V., read 2026-10-23
3. [Supported Protocols and Integration Guidelines](https://tether.to/en/supported-protocols) — Tether Operations, S.A. de C.V., read 2026-10-23
4. [USDC Terms](https://www.circle.com/legal/usdc-terms) — Circle Internet Financial, LLC, 2026-10-15
5. [Yields](https://docs.predict.fun/the-basics/yields) — PDF Labs Limited (Predict.fun), 2026-01-29
6. [Predict.fun Audit Report, version 2.0](https://github.com/Cyfrin/cyfrin-audit-reports/blob/main/reports/2026-02-18-cyfrin-predict-fun-v2.0.pdf) — Cyfrin, 2026-02-18
7. [Predict.fun Chainlink CRE Integration Audit Report, version 2.1](https://github.com/Cyfrin/cyfrin-audit-reports/blob/main/reports/2026-04-25-cyfrin-predict-cre-integration-v2.1.pdf) — Cyfrin, 2026-04-25

*Last updated 2026-10-23. A reference page, corrected in place — not a dated post.*