PearnHow it works
The life of a market, from creation to the last claim.
Actors
| Actor | Does |
|---|---|
| Creator | Anyone. Picks the question, the close time and a resolver |
| Bettor | Bets stNEAR on YES or NO, claims principal plus winnings |
| Sponsor | Adds stNEAR to a market's pot. Gets it back only if nobody bets |
| Resolver | Set per market, ideally a DAO. Reports the outcome after close |
| Guardian | Can only turn an outcome into Invalid, and only during the 24 h challenge window |
| Keeper | Anyone. Calls oracle.sync(); ours runs every 12 h |
Lifecycle
Create
createMarket(question, closeTime, resolver). The close is at least an hour away; the question is at most 280 bytes.
Bet
bet(id, side, amount) takes stNEAR. Your principal is fixed in NEAR at the current rate, and your weight is principal × seconds until close. Bets need an oracle reading younger than 2 days.
Resolve
After close, once the oracle has synced again, the resolver calls resolve(id, Yes | No | Invalid). That fixes the settlement rate and the pot. If nobody resolves within 7 days, anyone can call voidExpired(id).
Challenge window
For 24 h the guardian may call overrideInvalid(id). It changes who shares the pot, never its size.
Why time weight
Without it, a whale could bet on the obvious side just before close and take the yield that early bettors produced. With weight = principal × time left, a late bet earns almost nothing.