Independent account review for prop firms
Before the payout, someone should actually look.
PropArbiter audits a funded account against your own published rules and tells you, with evidence, whether the profit was real. Read-only. No API. The trader gets the same report you do.
Your risk engine watches the balance. Nobody watches how the balance was made.
Every payout request is a decision with your money on the line. Most are made fast, by a tired analyst, with a partial view of the account. Two things go wrong, and both cost you.
You pay accounts that broke your rules
Trading days, consistency, lot sizes, news windows: rules you publish but almost never replay across a full history. And some of that profit was never trading at all. It was your own quote, a fraction late.
You deny one, and can't prove it
The argument moves to Discord and Trustpilot, where it is your word against a screenshot and the firm is assumed guilty. Refunds, chargebacks and churn follow.
Two analysts reading the same rule will not always reach the same answer. A rules engine reading it will.
Credentials, not access.
Nothing connects to your systems. For every account you want reviewed, you send the same three things a trader types into MetaTrader.
Ask for your engine
Sign up and tell us where your rules live. Our team reads your whole site, imports every rule per account type, phase and funded stage, and builds a review engine dedicated to your firm.
We verify, you keep the numbers
Every value is shown with the sentence and page it came from, and checked line by line before it goes live. From then on you adjust numbers yourself; there is nothing to version or publish.
Send three fields, read the report
Login, investor password and server for the account you were about to pay out. Every rule answered one by one, with the trades and timestamps behind each answer, and a link the trader can verify.
One engine per firm, built by people
No self-service import. Your rules are read as your site states them, and conditions no generic checklist covers become checks written for your firm. Each report names the engine it ran on.
Plus one account for the feed
The arbitrage check needs one account of your own on each server your traders use. Any size. It never trades. We stay logged in and record the prices your server publishes, so recording starts the day it connects.
MT5 → cTrader → Match-Trader.
MetaTrader 5 first. cTrader and Match-Trader follow with read-only authorisation, still nothing to integrate.
Some traders don't beat the market. They beat your feed.
When your quote updates a fraction late, the next move is already known. They buy at the old price, and the profit is certain before the trade is placed.
One account, always listening
Your feed account stays logged in, recording every quote your server publishes. We compare it against an independent institutional reference feed and find every moment you were behind.
Once is luck. Dozens is software.
Entries landing inside stale windows again and again, with reactions under a third of a second, are not a trading style. The report shows each one, with both prices.
A flag, not a verdict
We hand you the evidence and you decide. The same check clears a trader who was accused wrongly. That is what an auditor is for.
Stale-window evidence starts the day the feed account connects. Markouts cover an account's whole history, because executed prices already sit in its own record.
Built to be believed
Deterministic
Pass and breach come only from a rules engine executing a versioned rule set. Language models write the explanation. They never decide.
Immutable
Every report is hashed and timestamped at issue. Anyone with the link can verify it, for as long as the link exists.
Symmetric
The same rigour on a pass as on a breach. A clean account is cleared with evidence, not with silence.
Private by default
Reports are private. Publication is per report, opt-in, anonymised and revocable.
Send one account you were about to pay out.
There is nothing to install and nothing to change about how you run your firm. Tell us about your desk and we will reply within one business day.
our support address
Telegram · @proparbiter
proparbiter.com
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