PredictionToolkit
What is OffMarket?
The service says positions are not publicly associated with the OffMarket identity, but the trades themselves remain public. That limited account-link claim does not establish invisibility to the service or to blockchain analysis. Read privacy and custody terms to understand the boundary.
Shared markets and liquidity do not guarantee an identical execution price across times or order sizes. Compare the same contract, side and depth before reviewing the final quote. The documented deposit route is USDC on Polygon, and the site says trading is unavailable from the United States.
Who it is for
- Comparing trading interfaces with account-link privacy features.
- Using an interface connected to familiar Polymarket liquidity.
- Choosing between Google and existing-wallet sign-in.
Features and coverage
- Shared market universe
Browse Polymarket outcomes rather than a separate contract catalog.
- Shared order book
Access the underlying venue's liquidity and prices.
- Account-link privacy claim
The provider says positions are not publicly linked to the OffMarket account.
- Sign-in choices
Use Google or connect a crypto wallet.
- Polygon deposits
Follow the documented USDC-on-Polygon funding route.
- Public browsing
Inspect the market interface before signing in.
Workflows with OffMarket
Compare an order quote
Open the same contract in both interfaces and compare side, depth and order terms.
Review privacy boundaries
Work out the account-link feature’s boundary from the privacy policy and custody terms. Distinguish what the provider says is not publicly associated with an OffMarket account from what the service or blockchain analysis may still reveal.
Check the funding route
Confirm Polygon and the exact supported USDC asset in the deposit flow before sending funds.
Pricing and total cost
The public description does not provide a complete platform-fee table. The trade confirmation and applicable terms are needed to identify the costs of the chosen route.
Getting started
Before you start: Account-link privacy does not establish that activity is invisible to the service or blockchain analysis.
- Open the official app.
- Browse the desired market and read its rules.
- Review the privacy policy and terms.
- Choose Google or wallet sign-in.
- Check the exact Polygon deposit instructions.
- Review the order quote before confirming.
Trades remain publicly visible even though the provider describes account-link privacy.
Useful links
What to check
- Account-link privacy does not establish that activity is invisible to the service or blockchain analysis.
- The site says trading is unavailable from the United States.
- Shared liquidity does not mean identical fills at different times or sizes.
- Public platform-fee detail is incomplete.
A closer look
Ratings & reviews
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Frequently asked questions about OffMarket
Is OffMarket a separate exchange?
It routes to Polymarket's markets and order book.
Are transactions hidden from the chain?
No. The stated privacy feature concerns linkage to the account.
Do I have to create an external wallet first?
The site offers Google sign-in as well as connection of an existing wallet.
Which deposit route is documented?
USDC on Polygon.