Alert 1
MetaMask is required. Install the extension first and keep one account unlocked in your browser before using OpenMarketz.
OpenMarketz
You are the oracle
Trade and create crisp prediction markets on Sepolia with USDC collateral and one OPEN code per market.
Before You Start
Read these alerts first to avoid wallet and network errors during market creation or trading.
Alert 2
Switch MetaMask to Ethereum Sepolia and keep testnet ETH + test USDC ready for gas, market creation, and trades.
Step 1
Create
Spin up an AMM market with a clear close time and seeded liquidity.
Step 2
Share
Send OPEN codes to your audience so they can join in a single click.
Step 3
Manage
Track markets you created and positions you invested in from one view.
Creator Flow
Launch a market, seed liquidity, publish the OPEN code, and resolve with confidence.
Start CreatingTrader Flow
Paste an OPEN code, trade YES or NO, track your positions, and redeem when resolved.
Open a MarketLegal
Review our terms, including testnet and open-source disclosures.
Terms & ConditionsTest Runs
Browse rendered localnet simulation reports, including transaction logs, investor outcomes, and protocol earnings.