Four platforms, one standard
Every strategy claim looks better in a pitch than it performs in a market. We build the platforms that close that gap — one per market, all running the same test.
ProveHouse LLC is a New Jersey holding company for a family of platforms that let you test a trading strategy before money follows it: Parlaid (sports prediction markets), Coinfetti (crypto), and Bullpit (stocks) are live; Assayon (strategy validation across any market) is in preview. Each platform proves a trading-strategy claim against out-of-sample data, real trading costs, and a stated benchmark. ProveHouse itself sells nothing.
Platforms
A different market under each, and each panel drawn in that platform’s own colours — four houses, one roof.
Parlaid’s split-flap tickerboard
01 Sports prediction markets
Replayed at the prices you would actually have got.
Write a rule in plain terms — back the leading team when a game is within one score entering the fourth — and Parlaid replays it across completed NFL and NBA games. It reports ROI, win rate, an equity curve, and the exact pricing tier every single bet was filled at.
The Coinfetti mint strike
02 Crypto
Crypto backtests with the hype taken back out.
Most backtests flatter. Coinfetti runs yours and prints two numbers side by side: the one any tool would show you, and the one left standing after correction for multiple comparisons, real trading costs, and an out-of-sample window it never touched. Paper only — no wallet, no exchange account, no money at risk.
The Bullpit podium takes the floor
03 Stocks & ETFs
Give a stock strategy the podium — then cross-examine it.
A bully pulpit is a platform with enough standing that whatever you say from it gets heard. Bullpit gives your strategy that stage, then sets the number it wants to lead with beside the number it actually delivered — on market data it never saw, after real trading costs, against simply holding the S&P 500.
Illustration — not a real result
04 Any market, self-authored
The backtest that assumes you are fooling yourself.
For traders who have outgrown presets. Declare a strategy as a specification rather than code, and Assayon runs it through four pre-registered gates: a sample floor, survival of real costs, a t-statistic deflated for every parameter you swept, and a blind out-of-sample window. Most strategies fail. That is what makes a pass worth having.
Weekly proof
No picks, no signals — just what the data said.
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Method
The same three questions, asked of every strategy submitted for proof.
A proof house is where work is tested before it may be sold — a barrel fired past its rated load before it is allowed to carry a maker’s mark.
Tested against data withheld from its own development, not fitted to the past after the fact.
Slippage, fees, and financing are charged against a result before it is called a result.
Performance is judged against a named alternative, not against silence.
Assay, n. — the controlled analytical test that determines a substance’s purity and composition, historically applied to precious metals before they could be certified and sold. ProveHouse LLC is the holding company for four platforms that run the equivalent test on a trading strategy before it is called proven.