BrentMarkets Investigation: The Withdrawal Dispute Behind a Percentage-Based “Gas Fee”

Publication date: October 30, 2026

A cryptocurrency trading platform may appear reliable for months. Trades seem to execute, account activity looks normal, and an investor may even complete an occasional withdrawal. But the real test of a platform often comes when a customer decides to close an account and move their remaining assets elsewhere.

A recent public customer complaint involving BrentMarkets, operating through brentmarkets.com, describes precisely that situation. The customer says they traded Bitcoin and Ethereum on the platform for more than a year and had previously completed one or two withdrawals. When they later attempted to withdraw their Ethereum and close the account, they say the platform refused to process the transaction unless they paid a charge described as a 13% “blockchain gas fee.”

The customer also described changing explanations for the withdrawal restriction, including network congestion, account closure procedures, administrative charges, and a requirement to withdraw the full balance.

These claims have not been established through a court judgment or a regulator’s finding in the sources reviewed for this article. They should therefore be treated as allegations from a customer account, not as proven facts about every person or business using the BrentMarkets name.

Nevertheless, the reported fee demand raises a useful technical and investigative question: when does a platform charge represent an ordinary disclosed service fee, and when is a supposed blockchain cost being used to justify an additional payment?

What the BrentMarkets customer reported

In a public account dated October 8, 2026, a customer described trading BTC and ETH through BrentMarkets for more than a year.

The customer said they had been carrying out several manual trades each week and had previously made one or two withdrawals without the same reported problem.

The dispute reportedly began when the customer wanted to close the account and withdraw their remaining Ethereum.

According to the account:

• BrentMarkets blocked the attempted ETH withdrawal.
• The platform demanded a 13% charge described as a blockchain gas fee.
• The customer was told that network congestion could leave the Ethereum transaction stuck.
• Subsequent explanations reportedly referred to account closure, administrative charges, and withdrawing the entire balance.
• The customer questioned the changing explanations and refused to accept the additional payment demand.

The customer also raised concerns about the platform’s stated London address, offshore communications, and the legal information supplied during the relationship.

Those points have not been independently verified in the available material. The complaint does not provide a confirmed total loss figure, and it would be inappropriate to invent one.

The most useful investigative focus is therefore the withdrawal demand, the explanation provided for it, and the records that could establish what happened.

Why a percentage-based Ethereum gas charge deserves scrutiny

The phrase “blockchain gas fee” can sound technical enough to discourage questions. But understanding how Ethereum transactions are charged helps investors assess whether a fee explanation makes sense.

Ethereum uses gas to measure the computational work required to execute transactions and smart-contract operations. The amount paid depends on factors such as the gas required and the applicable network fee rate.

That is different from automatically charging a fixed percentage of the value being transferred.

For example, a transfer of a larger ETH balance does not automatically require a gas fee equal to a fixed percentage of that balance. Network fees are based on transaction requirements and fee conditions, not simply on the amount of cryptocurrency being withdrawn.

This does not mean a trading platform can never charge a separate withdrawal or administrative fee. A business may have its own fee schedule, subject to the applicable rules and contractual terms.

The important distinction is that a platform’s service charge should not be confused with the Ethereum network’s own transaction fee.

A customer facing this situation should request:

1. The exact fee amount and currency.
2. The contractual provision authorizing the charge.
3. An explanation of whether the fee is a platform service charge or a blockchain network fee.
4. The destination wallet address, if a blockchain transaction is supposedly being prepared.
5. The transaction hash after any transaction is actually broadcast.
6. An itemized account statement showing the withdrawal request and its status.

If a platform claims that a network transaction is pending, a transaction hash can help establish whether it was broadcast to the blockchain. If no transaction was submitted, there may be no on-chain transaction to inspect.

The difference between a genuine network fee and a platform demand

This distinction is especially important when an investor is asked to send additional cryptocurrency before receiving an existing balance.

A genuine blockchain transaction fee is associated with processing a transaction on the relevant network. It can be checked against the network’s transaction data when the transaction has been broadcast.

A platform withdrawal charge is different. It is an amount the business claims it is entitled to collect under its own terms.

A demand may deserve further scrutiny when:

• The fee is introduced only after the customer requests a withdrawal.
• The platform cannot identify the contractual basis for the charge.
• The explanation changes from one conversation to another.
• The customer is asked to send cryptocurrency to an unrelated wallet.
• The platform refuses to provide an itemized statement.
• The customer is told that another payment will be required if the first one is made.

The presence of a fee does not independently prove misconduct. But a customer should not accept technical language as a substitute for verifiable transaction information.

Why earlier successful withdrawals do not settle the question

One detail in the BrentMarkets account deserves particular attention: the customer said they had previously completed one or two withdrawals.

That history may create confidence. A user who has successfully withdrawn money can reasonably feel that the platform is functioning as expected.

However, earlier withdrawals do not establish that all displayed account assets are available, that every trade was executed as represented, or that a later withdrawal will be processed.

For an investigation, the earlier transactions should be examined alongside the disputed one.

Useful records include:

• Dates and amounts of previous withdrawals.
• The destination addresses used for earlier cryptocurrency transfers.
• Transaction hashes and blockchain networks.
• Bank or exchange statements showing receipt of funds.
• The date the account-closure request was made.
• The first communication demanding the additional fee.
• Any later changes to the fee explanation.

Comparing successful withdrawals with the disputed withdrawal may help establish whether the platform changed its procedures, whether the destination details differed, or whether the customer was given inconsistent information.

What to verify about BrentMarkets before relying on its claims

The domain brentmarkets.com has appeared in third-party platform reviews and website-assessment services. Some of those sources raise concerns about the limited public information available about the operator and its trading conditions.

Those assessments are not equivalent to a regulatory decision. They should be treated as leads for further verification rather than proof that the platform has committed fraud.

A proper review should establish the following:

The legal operator: Identify the exact legal entity named in the account agreement, website terms, invoices, and payment instructions. A trading name is not necessarily the legal entity responsible for the service.

Regulatory permissions: Check the claimed legal entity and the precise financial activities it says it provides. A company registration, if one exists, is not the same as authorization to provide regulated financial services.

Website disclosures: Review whether the platform provides accessible information about fees, custody arrangements, trading conditions, withdrawal procedures, and dispute handling.

Contact details: Compare the address, email addresses, telephone numbers, and other contact details across the website, account documents, and customer communications.

Domain identity: Establish whether the website and the entity named in the contract can be connected through reliable evidence. Similar names or matching logos are not sufficient.

For customers in the United Kingdom, the Financial Conduct Authority provides a Warning List of unauthorised firms and guidance on checking a firm’s permissions through its official register.

The FCA explains that nearly all firms providing financial services in the UK must be authorised or registered for the relevant activities. It also cautions that a firm not appearing on the warning list may still be unauthorised or not yet identified by the regulator.

A search result alone should not be treated as a complete regulatory check.

How to preserve evidence in a BrentMarkets withdrawal dispute

If a customer is experiencing a similar withdrawal problem, the immediate priority should be preserving original records and avoiding additional exposure.

1. Save the complete communication history

Preserve emails, chat messages, account notifications, and any communication with the assigned adviser or support team.

Keep the original messages where possible. Record the dates and times of conversations and retain the contact details associated with them.

2. Export the account activity

Download available account statements, trade histories, deposit records, and withdrawal records.

Capture the displayed account balance and any withdrawal restriction messages. Make sure screenshots show enough context to identify the account page and date.

3. Preserve cryptocurrency transaction information

For each deposit or withdrawal, record:

• Asset and amount.
• Blockchain network.
• Sending and receiving wallet addresses.
• Transaction hash.
• Date and time.
• Exchange or wallet service involved.

If the platform has supplied a transaction hash, check it using the relevant blockchain explorer. A hash can help establish whether a transaction was broadcast and what its on-chain status shows.

For more guidance, see Cyb3rsect’s Blockchain Transaction Tracing guide. Insert the live internal link to that article before publication.

4. Document every fee demand

Keep the original wording of the 13% gas-fee demand and any later explanations. Record whether the platform requested payment in ETH, another cryptocurrency, or through a separate payment method.

Do not pay another charge simply because the platform describes it as the final requirement.

5. Contact the relevant exchange or financial institution

If funds were sent through a cryptocurrency exchange, contact its fraud or compliance team and provide the transaction information. If bank transfers or card payments were involved, contact the financial institution promptly and ask what reporting or intervention options are available.

A completed blockchain transaction is generally not reversible through the network itself. However, reporting quickly may still be important if funds reach a service that can lawfully review or restrict an account.

Beware of recovery offers after a withdrawal dispute

A person who publicly reports a cryptocurrency dispute may attract messages from individuals claiming they can recover the funds.

Some may describe themselves as ethical hackers, blockchain investigators, recovery specialists, or people with contacts inside exchanges and law-enforcement agencies.

Be careful.

No legitimate investigator should need a wallet seed phrase or private key to examine public blockchain transactions. Do not provide remote access to your computer or send additional cryptocurrency to someone promising guaranteed recovery.

A claim that funds have already been located should be supported by verifiable transaction evidence. A screenshot or a message claiming that a wallet has been traced is not enough.

Cyb3rsect’s Crypto Recovery Scam Investigation guide provides additional information on recognizing follow-up recovery schemes. Add the live internal link to that article here.

How Cyb3rsect can help examine a platform withdrawal dispute

A withdrawal dispute involving cryptocurrency can require more than a review of the platform’s customer-service messages.

Cyb3rsect approaches these cases by examining the available digital evidence and organizing the information needed to understand the reported transaction history.

Depending on the records available, an investigation may include:

• Reviewing platform and website information.
• Examining account statements and withdrawal instructions.
• Organizing communications with advisers and support representatives.
• Reviewing cryptocurrency transaction hashes and wallet activity.
• Comparing claimed withdrawals with independently visible blockchain records.
• Identifying inconsistencies between fee explanations and available transaction evidence.
• Preparing a structured timeline and evidence summary.

The limits of an investigation should be clear. Blockchain tracing can identify transaction paths and potential service touchpoints, but it cannot automatically establish the identity of a wallet controller or guarantee the return of funds.

If you are dealing with a similar incident, contact Cyb3rsect to discuss the records available and the investigative steps that may be appropriate.

Final thoughts

The BrentMarkets complaint highlights a question that every cryptocurrency investor should be prepared to ask: is the money being requested actually a blockchain network fee, or is it a separate charge imposed by the platform?

The customer account published on October 8, 2026 describes a withdrawal dispute involving Ethereum and a 13% charge labelled as a blockchain gas fee. The account also describes changing explanations for why the withdrawal could not proceed.

Those claims remain allegations and should be independently assessed. The available material does not establish a confirmed total loss or a regulatory finding against BrentMarkets.

For anyone facing a similar situation, the safest approach is to preserve the account records, verify the fee against the platform’s written terms, check any claimed blockchain transaction independently, and avoid sending additional funds until the demand has been properly examined.

A professional-looking dashboard is not proof of accessible assets. A technical explanation is not proof of a legitimate charge. And an earlier successful withdrawal does not remove the need to verify the next one.

Cyb3rsect — digital evidence review, cryptocurrency transaction analysis, and investigation support.