About
SplitWinner.
Prediction provenance for sportsbooks. We build the audited engine, the feed, and the desk terminal — and publish the receipts that let a trading desk verify every claim without trusting us.
§ 01What we build
Three surfaces. One audited engine.
The Feed is the engine on the wire. The Terminal is the same signal on a desk. The verifier is how anyone checks both. Same hashes, same anchors, end to end.
SplitWinner
The Feed
The engine on the wire: versioned /v1/* surface, OpenAPI as the contract, sandbox open to anyone. Trading desks pull-and-cache and serve their own stack.
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SplitWinnerGPT
The Terminal
The same signal as a ready-to-run desk app — today's slate, per-pick intel, the audit receipt behind every call. White-labeled, privately distributed, never the public store.
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Verification
Verification
Clone the sealed alpha or the official ledger, run verify.py, check the Bitcoin attestations. Pure stdlib Python, no account, no trust required.
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§ 02How we work
Three rules.
These are the rules we hold ourselves to. They sit underneath every product surface and every line of copy on this site.
01
Proof, not pitch.
Every public claim maps to a mechanism in the code, a row in the database, or an anchor in the audit trail. No statement that can't be re-derived from the data.
02
Calibrated, not confident.
The model only commits when it can justify a probability. Conformal sets render the model's uncertainty as a first-class output — not a footnote.
03
Publicly verifiable.
The verifier is open-source and runs on any machine. The Bitcoin timestamps aren't under our control. We make claims we can't quietly retract.
Who runs this
Single operator. Disclosed, not minimized.
SplitWinner is operated by a single operator today — stated plainly in OPERATIONS.md alongside key custody, hosting, backups, and known gaps. The proof mechanism is designed for exactly this shape: the parts that matter are the parts the operator cannot rewrite — Bitcoin attestations already published, the anchor chain in your own clone, and an append-only disclosure record. Diligence reads the same documents the public does; there is no private packet that contradicts them.
§ 03Get in touch
We're easy to reach.
Press, partnerships, enterprise integrations, or general curiosity — drop a line.
github.com/SplitWinner/audit_trail (opens in new tab)Sandbox first. Then the beta.
A key in minutes — the full API surface, mocked plausibly-live, no card, no NDA. When it holds up on your desk, the 2026 beta cohort is a direct conversation: a limited set of desks, a fixed seasonal price in writing.
No card · no NDA · fixed price in writing