Now live on Solana devnet · Github
ONYX
Built on SolanaSolanaPowered by MagicBlockMagicBlock

Prediction markets
at flash speed.

Sub-second trades on Ephemeral Rollups. Every market settles on-chain to zero. No custodian, no trust.

ONYXTradeMarketsPortfolioActivityportfolio146 tUSDCLaunch
illustrative demo · live prices & real AMM math · sample data tagged · devnet tUSDC
🏴󠁧󠁢󠁥󠁮󠁧󠁿 England vs Argentina 🇦🇷Total yellow cards — over 3.5
50¢ 12.7¢Yes price
0¢25¢50¢75¢100¢Jun 13Jun 28Jul 13

illustrative price path · live price & 196 tUSDC volume are real

Amount0.00 tUSDC
Buy Yes
Shares
0.00
Cost
0.00 tUSDC
To win
0.00 tUSDC

quoted with the exact on-chain CPMM math · winning shares redeem 1:1

Yes50¢ 12.7Buy Yes
No50¢ 12.7Buy No

Ephemeral Rollup speed

Trades run on MagicBlock's ER and confirm in ~1 second with validator-sponsored fees — proven live with concurrent wallets.

Provable solvency

Every market's vault drains to exactly zero at settlement — an on-chain identity checked to the lamport in every live proof.

Session-key trading

One approval mints a browser key scoped to trading only. It mathematically cannot withdraw — and every trade after is popup-free.