INTERPOL, crypto and extradition: why the risk is no longer just a Red Notice

Reading time: 9–10 minutes

For some time, Gherson has written about the growing overlap between INTERPOL, extradition and cryptoasset investigations. The early question was a relatively simple one: can allegations involving crypto lead to an INTERPOL Red Notice and, ultimately, extradition?

The answer, as a growing number of international cases has shown, is plainly yes.

However, the landscape has changed. The risk for individuals and businesses in the crypto space is no longer limited to a Red Notice appearing at the airport, followed by an extradition request. That remains a serious risk, but it is now only part of the picture. Increasingly, international enforcement is also about information-sharing, asset tracing, account freezing, wallet identification, intelligence notices, coordinated operations and pressure on exchanges and service providers.

In short, the modern crypto investigation may start long before anyone is arrested.

From Red Notices to a wider toolkit

A Red Notice remains the best-known INTERPOL mechanism. It is a request to law enforcement worldwide to locate and provisionally arrest a person pending extradition, surrender or similar legal action. It is not, strictly speaking, an international arrest warrant. INTERPOL does not itself arrest people, and each member state decides what legal effect to give a Red Notice under its own domestic law. In practice, however, the consequences can be immediate and severe: detention at a border, visa problems, reputational damage, bank account closures and the sudden need to fight extradition proceedings in a foreign court.

That is why Red Notices remain central to crypto-related criminal allegations. Crypto investigations are almost always cross-border. A suspect may be in one country, an exchange in another, victims in a third, servers elsewhere and the alleged proceeds moving across decentralised platforms. For a requesting state, INTERPOL offers an obvious route to locating an individual abroad and, if possible, securing provisional arrest pending extradition.

However, INTERPOL’s relevance to crypto enforcement now goes beyond Red Notices. Purple Notices may be used to share information about criminal methods, techniques or technologies — for example, an emerging crypto-fraud typology, a laundering method, a stablecoin exploit or a particular wallet scam. Silver Notices – a newer development – are aimed at tracing and identifying criminal assets. These tools may not seek a person’s arrest, but they can still have important consequences. They may prompt scrutiny by financial institutions, exchanges, border authorities and law enforcement agencies. They may also form part of a broader investigative package that later supports freezing, restraint, confiscation, forfeiture or extradition.

Gherson have explored Silver Notices further here:

What is INTERPOL’s Silver Notice?

For those concerned about exposure to an international crypto investigation, this is the key point: the first sign of trouble may not be an arrest. It may be an account closure, an exchange enquiry, enhanced due diligence, unexplained travel disruption, a request from a bank or a sudden inability to access assets.

Crypto makes jurisdiction messy

Crypto’s borderless nature is both its commercial strength and its legal complication. Traditional financial crime investigations often follow relatively familiar rails: bank accounts, company structures, payment processors and identified intermediaries. Crypto investigations can involve all of those, but also decentralised exchanges, bridges, self-custody wallets, validators, mixers, stablecoins, smart contracts and pseudonymous addresses.

This creates a jurisdictional puzzle. Which country has the strongest claim to prosecute? The country where  the suspect is based? The country where the alleged victims are located? The country where the exchange is incorporated? The country whose currency or banking payment rails were used? The country where the servers sit? Or the country whose regulators take the most aggressive view of the alleged conduct?

The answer may be more than one, and this is where extradition risk becomes real. Several jurisdictions may argue that they have a sufficient connection to the alleged offending, particularly where the allegations involve fraud, money laundering, market manipulation, sanctions evasion or breach of financial regulation. The United States has been especially active in pursuing crypto-related cases with international elements, but the trend is broader than any single jurisdiction.

Issues may often arise:

Extradition for crypto-related allegations – UK High Court blocks extradition to US for crypto-related allegations (Part 3)

For individuals, founders, traders, market-makers, developers and compliance officers, this means that “I have never been to that country” is not always a complete answer. It may be an important point, and sometimes a decisive one, but it will rarely be the end of the analysis.

Extradition: the second stage of the problem

A Red Notice may help locate and arrest an individual, but extradition is a separate legal process. The requesting state still has to satisfy the courts of the requested state that extradition is lawful. In the UK, this may involve issues such as dual criminality, passage of time, forum, human rights, prison conditions, political motivation, abuse of process and whether the conduct properly falls within the offence alleged.

This distinction matters. INTERPOL compliance and extradition law are related, but they are not the same. A Red Notice may be challenged before the Commission for the Control of INTERPOL’s Files on grounds such as political motivation, lack of compliance with INTERPOL’s rules, human rights concerns, insufficient judicial data or the misuse of criminal process for what is really a civil or commercial dispute. An extradition request, by contrast, is challenged before the relevant national court according to domestic extradition legislation.

The two processes should be considered together. A successful INTERPOL challenge may reduce the risk of arrest and international circulation of data, but it may not prevent a state from pursuing extradition through diplomatic channels. Conversely, defeating extradition may not automatically remove all INTERPOL data. A coherent strategy should address both tracks.

The particular risk of civil disputes becoming criminal allegations

One recurring theme in Gherson’s previous commentary is the risk that commercial or regulatory disputes can be reframed as criminal allegations. This is especially acute in crypto: projects fail, tokens collapse, exchanges freeze withdrawals, investors lose money, founders fall out, market-making arrangements are misunderstood and liquidity programmes are criticised after the event. What one party describes as fraud, another may describe as commercial failure, poor governance, inadequate disclosure or regulatory uncertainty.

That distinction matters. INTERPOL’s system is not intended to be used for private debt collection, political disputes or matters that do not amount to serious ordinary-law crime. But in practice, once a national authority issues an arrest warrant and seeks international cooperation, the individual may already face serious practical consequences before the merits of the allegations are fully tested.

This is why early evidence gathering is essential. Contemporaneous documents, investor communications, token documentation, exchange records, wallet histories, legal advice, compliance materials and governance records may all help show that the matter in question is commercial or regulatory rather than criminal. In crypto cases, blockchain analytics can cut both ways: it may be relied on by law enforcement, but it can also be used by the defence to demonstrate legitimate flows of funds, lawful trading activity or the absence of concealment.

Asset tracing is becoming as important as arrest

The direction of travel is clear: international cooperation is increasingly focused not only on people, but also on assets. That is unsurprising. In crypto cases, the alleged proceeds may move quickly, be converted between assets, pass through decentralised protocols or be held in wallets controlled by unidentified individuals. Law enforcement agencies therefore have a strong incentive to identify, freeze and preserve assets at an early stage.

This may involve domestic tools, such as restraint orders, account freezing orders, crypto wallet freezing orders or civil recovery powers. It may also involve requests for mutual legal assistance, exchange disclosure, blockchain analytics, INTERPOL notices designed to trace assets and cooperation between financial intelligence units.

For the person affected, this can be just as disruptive as an arrest. Assets may be frozen before any charges are brought. Business operations may be interrupted. Legal fees may become difficult to fund. Banks and exchanges may exit the relationship. Reputational issues may spread faster than the underlying legal process.

The practical response is to treat asset issues and personal liberty issues as connected. A person facing a crypto-related investigation may need to think simultaneously about extradition exposure, INTERPOL data, frozen assets, exchange accounts, sanctions screening, immigration status and civil recovery risk.

The compliance angle: not just for suspects

Another development is that crypto-related INTERPOL and extradition issues are not relevant only to those accused of wrongdoing. Businesses may also be affected. Exchanges, wallet providers, OTC desks, payment processors, investment funds and professional advisers may receive enquiries or find themselves dealing with customers who are subject to international alerts.

A Red Notice, Purple Notice or asset-focused intelligence request may trigger enhanced due diligence obligations. Firms may need to consider whether to freeze activity, file suspicious activity reports, review sanctions exposure, preserve documents or respond to law enforcement requests. The wrong response can create legal, regulatory and reputational risk. So can overreaction, particularly where a customer has not been convicted and the underlying allegation is contested.

For compliance teams, the challenge is balance. Crypto enforcement is becoming more sophisticated, but allegations are not legal findings of fact. A careful, documented and proportionate response is usually better than a reflexive one.

What should you do if you are worried?

If you suspect that you may be the subject of an INTERPOL notice, extradition request or crypto-related criminal investigation, the worst strategy is to wait until you are stopped at a border. There are practical steps that can be taken early.

First, assess whether INTERPOL data is likely to be in circulation. This may involve considering whether a Red Notice, diffusion or other notice has been requested and whether an application to the Commission for the Control of INTERPOL’s Files is appropriate.

Second, map the jurisdictions. Identify where the alleged conduct occurred, where the relevant parties are based, where assets are held, where exchanges or service providers are located and which countries may claim jurisdiction.

Third, preserve evidence. In crypto cases, wallet records, exchange statements, communications, smart contract interactions, tax records and source-of-funds material can be crucial. Delay may make reconstruction harder later on.

Fourth, consider extradition risk. If a particular country is likely to seek extradition, it is important to understand the applicable treaty framework, likely offences, possible bars to extradition and any human rights issues.

Fifth, consider asset strategy. If assets are frozen or at risk of being frozen, it may be necessary to seek exclusions for living expenses, legal fees or business needs, or to challenge the legal basis for the restraint.

Finally, avoid accidental non-compliance. Moving assets, deleting records or travelling without advice may make matters worse, even where the underlying allegations are defensible.

Gherson insight

The increasing convergence of cryptoassets, INTERPOL mechanisms and cross-border enforcement reflects a broader shift in how financial crime investigations are conducted. International authorities are no longer focused solely on securing arrests or extradition; they are increasingly using intelligence sharing, blockchain analytics, asset tracing and coordinated regulatory action to build cases across multiple jurisdictions.

As a result, individuals and businesses involved in the digital asset sector should not assume that the absence of a criminal charge or INTERPOL Red Notice means there is no legal risk. Early warning signs, such as exchange enquiries, account restrictions or asset freezing measures may indicate that an international investigation is already underway. Assessing jurisdictional exposure, preserving evidence and developing a coordinated legal strategy at an early stage can often be critical in protecting both assets and reputation. This perspective aligns with Gherson’s long-standing experience in advising clients facing complex, multi-jurisdictional investigations involving extradition, INTERPOL proceedings and financial crime.

Frequently asked questions

Can cryptocurrency transactions lead to an INTERPOL Red Notice?

Yes. If a national law enforcement authority issues an arrest warrant in connection with alleged crypto-related offences and requests international cooperation, INTERPOL may publish a Red Notice if its rules are satisfied. However, a Red Notice is not an international arrest warrant, and each member country decides what legal effect to give it.

Can I be extradited even if I have never visited the requesting country?

Potentially, yes. In cross-border crypto investigations, several countries may claim jurisdiction based on factors such as where victims are located, where exchanges operate, where transactions were processed or where financial losses occurred. Whether extradition is lawful will depend on the applicable treaty, the evidence and the legal safeguards available in the requesting state.

What is the difference between an INTERPOL Red Notice and extradition?

A Red Notice is an international request to locate and provisionally arrest an individual pending extradition or similar legal action. Extradition is a separate judicial process conducted under the domestic law of the requested country. It is therefore possible to challenge a Red Notice before INTERPOL while separately contesting any extradition proceedings before the courts.

Can cryptoassets be frozen before criminal charges are brought?

Yes. Depending on the circumstances, authorities may seek restraint orders, account freezing orders, crypto wallet freezing powers or other asset preservation measures while an investigation is ongoing. In some cases, assets may be frozen before any criminal charges have been filed.

What should I do if I think I am the subject of an international crypto investigation?

Early legal advice is often important. It may be necessary to assess whether INTERPOL data is in circulation, identify which jurisdictions may claim authority, preserve transaction records and wallet information, evaluate potential extradition risks and consider whether any assets require immediate protection. Taking advice before travelling internationally or responding to enquiries from exchanges or financial institutions may help avoid unnecessary complications.

Conclusion

INTERPOL, crypto and extradition now sit at the centre of a rapidly developing area of international enforcement. The old picture, a Red Notice followed by an extradition request, still matters, but it is no longer the whole story. Modern crypto cases may involve intelligence notices, asset tracing, wallet freezing, exchange disclosure, compliance pressure and multiple jurisdictions competing to assert authority.

For those operating in the crypto sector, the lesson is not to panic, but to be prepared. Allegations involving digital assets can move quickly across borders, and the legal response must be just as coordinated. The key questions are simple, even if the answers are not: who is investigating, what conduct is alleged, where did it occur, what assets are at risk and what international mechanisms are being used?

In the crypto era, the first battle may not be fought in the courtroom. It may be fought in the data.

How Gherson can assist

Gherson’s International Protection Team has extensive experience advising individuals facing complex extradition proceedings, INTERPOL Red Notices and multi-jurisdictional criminal investigations. We regularly represent clients in cases involving allegations of financial crime, corruption, politically motivated prosecutions and other cross-border matters.

If you have any questions arising from this blog, please do not hesitate to contact us for advice, send us an e-mail, or, alternatively, follow us on X, Facebook, Instagram, or LinkedIn to stay-up-to-date.

The information in this blog is for general information purposes only and does not purport to be comprehensive or to provide legal advice. Whilst every effort is made to ensure the information and law is current as of the date of publication it should be stressed that, due to the passage of time, this does not necessarily reflect the present legal position. Gherson accepts no responsibility for loss which may arise from accessing or reliance on information contained in this blog. For formal advice on the current law please do not hesitate to contact Gherson. Legal advice is only provided pursuant to a written agreement, identified as such, and signed by the client and by or on behalf of Gherson.

©Gherson 2026