Brier.
Forecasting, scored honestly.
A hash-chained, append-only record of sports predictions — timestamped before the event, graded against the close, and independently verifiable by anyone.
The record
Live, graded, and public. Not a highlight reel.
Record begins when live grading starts.
The record starts here. Every prediction is timestamped before first pitch and graded against the close. Nothing hidden.
Method
Three steps, in order. Skipping any one of them breaks the record.
A model produces a probability and a stake size before an event starts. Nothing here is a human's after-the-fact opinion.
The prediction is signed, hashed, and chained to the row before it, then timestamped — before the event, not after.
Once the event ends and a verifiable market close exists, the prediction is graded against it. No close, no grade.
Markets
What's covered today — expanded only as the model earns it.
Pricing
What's live today, and what's launching next.
FAQ
No. The predictions table is append-only at the database level — the server itself has no UPDATE or DELETE privilege on it, regardless of who's asking.
It's marked ungraded and stays out of the public record. Brier doesn't grade on an assumption.
Grading is only as honest as the closing-line data behind it. One market, done right, beats several done loosely.