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Notes from building execution infrastructure.

Prop-firm drawdown arithmetic, broker symbol suffixes, contract rolls, and what actually breaks when you copy a trade across five platforms.

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Prop Firm Guides22 Sept 2026 · 11 min · TradinSolutions

Cloud vs Local Trade Copiers, and How Prop Firms Detect Copy Trading

Neither a cloud copier nor a local one hides you from a prop firm. Firms do not look for software — they look for the pattern copying leaves in the trade log. Here is what that pattern is, what the terms actually prohibit, and how to stay inside them.

Three funded accounts at three different firms, one strategy. In the illustrative example that follows, all three sell EURUSD within four seconds of each other, at 0.41, 0.82 and 1.23 lots — the same decision, scaled to three balances. Eight weeks later, one of the firms asks the trader to explain the account.

The headline question has a short answer, and it disappoints people who were hoping otherwise. Cloud and local trade copiers are both visible to a prop firm, and neither one hides you. Firms do not detect copying by hunting for software on a machine they cannot see. They detect the pattern that copying leaves in their own trade log, and that pattern is identical whether the copier runs on a laptop in your kitchen or on a server in a data centre.

INFO

Quick answer. Prop firms detect copy trading from trade data they already hold: near-identical entry timestamps, proportional position sizes, matching instruments and matching stop distances across accounts. Hosting location is a secondary signal at most. What matters is whether the accounts are all yours, whether your firm's terms permit copying between your own accounts, and whether each account keeps its own risk limits.

What a prop firm can actually see

A prop firm sits on the broker side of your trading. It sees more than most traders assume, and almost none of what it sees has anything to do with the tool you used.

Timestamps. Every order carries a server-side time, usually to the millisecond. Two accounts entering the same instrument in the same direction inside the same second is the single loudest signal there is. This is not clever forensics; it is a sort on one column.

Position sizing relationships. If account A takes 0.41 lots and account B takes 0.82 at the same moment, the 2:1 ratio holds across dozens of trades, and the accounts sit in a 1:2 balance ratio, that is arithmetic, not coincidence.

Instrument and direction overlap. A firm can compute, cheaply, what percentage of account A's trades have a same-direction twin on account B within a time window. Copied accounts sit near the top of that distribution.

Stop and target distances. Identical stop distances in points, trade after trade, are as identifying as the entry time.

Connection metadata. Yes, firms log IP addresses and, on MetaTrader, a terminal fingerprint. This is real, and most articles get it wrong by treating it as the main event. It is a corroborating signal: a firm that suspects nothing does not go looking at IPs. It is also, on most platforms, far less informative than people assume — for reasons covered below that have nothing to do with which copier you chose.

What it cannot see. Your desktop, the contents of your VPS, or which vendor's software placed the order. MetaTrader reports an Expert Advisor magic number when one is set, and a comment field — there is no field that says "this came from a copier".

WARNING

The practical consequence: "will they find out I use a copier" is the wrong question. Assume the firm can reconstruct the relationship between your accounts whenever it looks, and build on that assumption.

What the terms actually prohibit

Dates matter here. Everything in this section describes common clause shapes as of September 2026 — check the firm's current terms before relying on any of it. Firms are rarely banning copying as such; they are banning specific commercial behaviours, of which copying is sometimes a symptom. The clauses fall into four families.

Copying between accounts you personally own. Widely permitted, and several firms say so explicitly. This is the case where you hold two or three challenges or funded accounts and want one decision to reach all of them. The restrictions here are usually about total allocated capital per trader, and about not exceeding a maximum aggregate exposure across accounts.

Copying from another person, or a signal service, into a funded account. This is where firms get restrictive, and the reason is not technical: if fifty funded traders follow one signal channel, the firm is funding one strategy fifty times and its risk book is far more concentrated than it looks. Clauses range from outright prohibition to "permitted, but your account may be grouped with others for risk purposes".

Group or coordinated trading. Several firms prohibit accounts operated by different people from trading in a coordinated way. This catches a case with nothing to do with software: two friends on the phone taking the same trade.

Account sharing and shared infrastructure. This is the IP and device clause. It is usually aimed at account sharing — one person trading another person's funded account — and at identifying multiple accounts held under different names by the same trader. The wording is often broad enough to mention shared IP addresses.

That last family is the one people ask us about, so here is our own position stated plainly rather than sold.

Where a hosted relay honestly sits

Our copier is a hosted relay. The worker that receives a Provider's fill and issues the Follower's order runs on our infrastructure, not on your machine. We do not claim local execution, and you should be suspicious of anyone who does while also selling you a web dashboard: if the trades continue when your laptop is shut, something on someone else's hardware is placing them.

The part worth being precise about is the one everybody asks about, and the honest answer is platform-specific rather than reassuring in general. What address your broker sees is decided by the platform, not by your copier.

MT4 and MT5. Our execution provider runs the MetaTrader terminal in its own cloud, in whichever region your account is homed. The broker therefore sees that provider's data-centre address — not ours, and not yours. This is true of essentially every hosted MetaTrader tool on the market, because they are all built on the same small handful of terminal-hosting providers. It also means that a "dedicated IP" offer on a MetaTrader account is, in most cases, dedicated somewhere that is not the broker-facing hop.

cTrader. Every connection reaches the broker's backend through cTrader's own proxy cloud, on Spotware's endpoints, rather than opening a socket to the broker directly. The broker does not see a client address at all, and there is no dedicated-address option to buy. This is how the Open API is built, not a limitation of any one vendor.

Tradovate. Here the broker-facing connection genuinely is our worker, so this is the platform where hosting location is a real, visible fact rather than a theoretical one. It comes with a much larger constraint, covered in its own section below.

So on MetaTrader and cTrader, "your own IP" is not something any copier vendor can sell you: a third party terminates the broker connection in both cases. And the timestamp cluster remains the primary signal on every platform regardless, which is why the next section is about behaviour rather than addresses. Dedicated regional relays are on our roadmap — planned, not shipped — and their honest benefit is latency where our worker is the broker-facing hop, not concealment.

The framing that survives all of it: no copier, hosted or local, can make you compliant. What a copier can do is make it possible for you to comply, by giving you per-account control, an auditable record and an obvious way to stay inside a limit you were told about. That is a different promise from the one our competitors make.

The futures exception worth knowing before you pay

Tradovate's own support documentation states that prop-firm and evaluation accounts are not eligible for its API, and that a funded live account is required. As of September 2026 that is their published position, and it is not a rule any third-party tool can work around: if the API will not accept the account, no copier reaches it, ours included.

So a futures evaluation account cannot be a Follower on that platform, whatever a vendor's feature list says. This is an eligibility rule rather than a rules breach — you are not doing anything prohibited by asking; the connection simply is not granted. Check it before you buy a challenge, not after, and verify the current position directly with Tradovate, since platform API policies are revised without notice.

How to stay inside the rules

Six practices, in rough order of how much trouble they save.

  1. 01Read the copy-trading clause of every firm you hold an account with, and re-read it when they publish new terms. Firms do not email you about a clause change; they update a page.
  2. 02Keep your accounts yours. Copying between accounts you own is the case with the clearest permission. The moment a third party's account is a Provider or a Follower in your setup, you are in a different clause.
  3. 03Size each account off its own equity, not off the Provider's volume. This is a risk practice first, but it also means your accounts are not producing a clean fixed ratio for a firm's query to find. Percentage sizing measured on the actual fill is how our copier does it by default.
  4. 04Do not run the same strategy on accounts registered to other people. If you are helping a friend, you are the coordination clause's exact subject.
  5. 05Keep the log. Every trade our relay copies, holds or skips is recorded with a reason and a measured relay time. If a firm asks you to explain an account, that record is the difference between a conversation and a closure.
  6. 06If a firm's terms are ambiguous, ask in writing before you fund. Support answers are not contractual, but a written answer in your inbox beats an assumption.

Frequently asked questions

Will a trade copier get my prop firm account banned?

Not by existing. What breaches terms is the behaviour, not the tool: copying from someone else's account into a funded account, coordinating with other traders, or exceeding an aggregate exposure limit across accounts. Copying between accounts you personally own is permitted by many firms as of September 2026 — check your firm's current terms, since these clauses are revised often and vary considerably between firms.

Can prop firms detect a trade copier?

They can detect the copying, which is what they care about. Near-identical entry timestamps across accounts, proportional position sizes and matching stop distances are all visible in data the firm already holds, and a single query surfaces them. No firm has a way to see which software placed an order — MetaTrader carries only a magic number and a comment field, neither of which identifies a vendor.

Is a local copier safer than a cloud one for prop firms?

Less different than the marketing suggests, and on two platforms not different at all. On MT4 and MT5 a hosted tool's broker connection is terminated by a terminal-hosting provider, and on cTrader every connection goes through the platform's own proxy cloud, so the broker sees neither your address nor the vendor's in either case. A local copier still leaves the identical timestamp and sizing fingerprint, stops when your machine stops, and keeps no independent record.

Does a shared IP address from a cloud copier get prop accounts flagged?

On most platforms the broker never sees the copier's address in the first place. MetaTrader connections made by hosted tools arrive from a terminal-hosting provider's data centre, and cTrader connections arrive through Spotware's proxy cloud, which is how the Open API is built. Where our worker is the broker-facing hop, the address is shared today. In every case the timestamp cluster across your accounts is the signal that actually prompts a review.

Do prop firms allow copy trading between my own accounts?

Many do, and some say so explicitly in their FAQ. The usual conditions are a cap on total allocated capital per trader and a limit on aggregate exposure across your accounts. Some firms also require that all accounts be registered under the same verified identity, which is the opposite of a problem if they are genuinely all yours. Verify with your specific firm as of today's terms.

Can I use a trade copier on a Tradovate prop firm or evaluation account?

No, and the obstacle is the platform rather than the copier. Tradovate's own support documentation states that prop-firm and evaluation accounts are not eligible for its API and that a funded live account is required — their published position as of September 2026. No third-party tool can route around an API that will not accept the account. Confirm the current policy with Tradovate before buying a futures challenge you intend to automate.

Where this fits

If the question underneath yours is really whether automation of any kind is allowed on a funded account, /blog/ea-and-copiers-on-prop-firms works through the clause families in more detail and covers Expert Advisors alongside copiers. And once you have decided the accounts are yours and the copying is permitted, the arithmetic of keeping four different balances in the same relationship to their own limits is the whole subject of /blog/prop-firm-copier-sizing-across-accounts.

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