Orderbook

Orderbook Mechanics

Trufonomics uses a fully on-chain central limit orderbook (CLOB) built on Kwil-DB consensus.

Tick Size

All prices use a $0.01 tick size. Orders can only be placed at whole-cent prices ($0.01, $0.02, ... $0.99).

Matching Priority

Orders are matched using FIFO (First In, First Out) priority:

1. Price priority — Better-priced orders fill first
2. Time priority — At the same price, earlier orders fill first

This means queue position matters. Getting in early at a price level gives you priority over later orders at the same price.

Order Types

Limit Orders

Place an order at a specific price. It sits in the book until matched or cancelled.

Split Limit Orders

For bracket markets, place a single order that splits across multiple outcomes.

Queue Position

A unique feature of the Trufonomics orderbook: you can use changeBid / changeAsk to modify your inventory size without losing your queue position. This is critical for market makers who need to adjust exposure without going to the back of the line.

Matching Modes

The matching engine supports three modes: