What is an onchain prop firm?

An onchain prop firm is not a conventional prop firm that accepts crypto. Payment rails are the least interesting thing about it.

The difference is where the evidence lives.

In a conventional evaluation, the firm holds the prices, the rules as actually executed, and the verdict. A trader receives a conclusion and is asked to accept it. An onchain evaluation moves the parts that decide the outcome somewhere the trader can check them independently.

The problem being solved

The conflict is structural. A firm earning fee revenue from evaluations is cheaper off failing you than funding you, and it is the sole holder of the evidence that decides which happens. Every recurring complaint in the industry — disputed breaches, moved goalposts, payouts refused on review — descends from that single arrangement.

This holds regardless of any firm's integrity. An honest operator and a dishonest one present identically to the trader, because the information that would tell them apart is private to both.

What putting it on chain actually fixes

Three things change, and it is worth separating them because they are often conflated into a general claim of transparency.

1. The rules are published as the same configuration the engine judges against, so the rulebook you read before paying is the one that runs — not a marketing summary of it.
2. The prices that produced every fill are recorded, so an evaluation can be replayed and the same result reached independently.
3. The verdict is anchored on chain, so it carries a public timestamp that cannot be revised after the fact.

Together these make a verdict reproducible. The firm keeps its commercial role and loses the ability to quietly change the answer, which is the specific power that made the conflict dangerous.

Simulated trading, real settlement

One point deserves stating plainly, because blurring it would flatter the product. The trading is simulated. No order reaches a venue and no position sits in a market — an evaluation is scored against recorded prices from real venues.

The fee and the payout are real. So the arrangement is: you risk a fee rather than a balance, you keep 80% of funded profit, and both the assessment and the settlement can be checked rather than taken on trust.

What it does not solve

Anchoring a verdict does not make the rules fair, only fixed. A rulebook can be published, reproducible and still demanding — and these are demanding. What changes is that the terms cannot move after you have paid, and a disagreement has a factual answer rather than resolving into whose word carries more weight.