Challenge a rival to an even-money match in the same weight class. Pick your coin, they pick theirs — the higher % gain at the bell takes the whole pot. No liquidations. No middlemen. Just the tape.

No open challenges yet — throw down the first one.
Pick your coin, weight class, length and stake. Your SOL is escrowed on-chain the moment you post — nobody can touch it but the winner.
A rival accepts with a different coin in the same class and matches your stake. Start prices are captured as a cross-sourced TWAP the instant the match locks.
At the bell, the coin with the higher % gain wins the entire pot minus rake. Settlement is time-averaged and multi-source — no last-second wick can steal it.