Matching
How two opposite orders become one fill.
Crossing
When a YES bid and a NO bid together reach a dollar, they cross. The program takes both payments, mints one complete set, and delivers each buyer the side they paid for.
YES @ 0.18 + NO @ 0.82 = 1.00 USDC → mint 1 YES + 1 NOWhat follows from that
- No market maker of last resort — liquidity is trader-supplied.
- No inventory risk — the vault only holds dollars a set was minted against.
- No privileged flow — the book is a public account.