Platform engine
Onchain rails
Every position, close and payout is an event anyone can replay, and the price is a decentralized oracle report rather than a number we choose.
A neutral counterparty
One backstop takes the other side of every position instantly, so any market can exist and stay liquid.
Odds from probability
One hold probability prices both sides. Each multiplier is the inverse of its own outcome, fixed at lock.
Winnings priced by probability, in the open
Odds are where most venues bury their edge. Holdline prices a position from one number, the probability it wins, read from live volatility and the shape you drew. The multiplier is the inverse of that probability, less a published spread that sits beside the odds and never inside them. A ceiling caps the multiplier so the backstop stays solvent. On a normal book you learn the real odds after you lose. Here you see them first.
Request, lock, settle
Opening is a request: your deposit and a signed quote, carrying the volatility and the model version, go onchain. The position activates only when the operator locks it to a signed price report covering your timestamp, which sets your entry price and fixes your multiplier. From there the price is read only against the levels set at lock.
A close submits a fresh signed report and the contract computes your mark-to-market payout. Reaching the end needs no report at all, so an oracle outage can never trap funds. A touch is proven by the operator's signed report in its next batch, so the backstop is always made whole.
Because every input is either signed or onchain, any result is reproducible. A hash in an onchain registry pins the model's parameters, so anyone can download them and recompute a multiplier from the quote, the report and the shape, and get the exact number the contract used.
Volatility only sizes, it never decides
Each asset's span sizes the corridor to its market and arrives inside the signed quote. It is bounded, and it can only scale a corridor, never move a rail after open. The price against the levels you set decides who wins.