Identifying crypto money laundering: the patterns on the blockchain
Date: 17 July 2026 | Week: 29 | Reading time: 7 minutesAuthor: Tyler Dijst 
Identifying crypto money laundering starts with the blockchain, where every transaction is visible, and that is exactly why money laundering leaves distinctive traces. Anyone who knows what to look for can recognise certain patterns that often occur when concealing the origin of funds. This blog explains what those patterns are and how to weigh them.
In short
Money laundering leaves recognisable patterns on the blockchain, such as peel chains and rapid pass-through transfers across many wallets. Such patterns are an indication, not proof, and require manual interpretation in context. Paucitas maps these signals and records in a traceable way what a pattern does and does not show.
- Typical money laundering patterns include peel chains, rapid pass-through transfers, splitting amounts and the use of mixers.
- A pattern is an indication and not proof; only manual interpretation in context makes clear what it means.
- Paucitas identifies and interprets these patterns and supports reporting and investigation without overstating the facts.
The question we often get is how to recognise suspicious crypto transactions. The answer lies in patterns, but also in the nuance that a pattern never stands alone and always requires interpretation.
A pattern on the chain raises a question, but only the interpretation around it gives the answer.
Identifying crypto money laundering: which patterns point to it?
The patterns that most often point to money laundering are the splitting of large amounts, rapid pass-through transfers across many wallets, and the use of services that obscure the origin of funds. Often an amount is divided into small pieces and forwarded at high speed, so the route appears difficult to follow. Combining funds from different sources and quickly converting them into other coins also occurs regularly. These signals only gain meaning when viewed together and in context.
What is a peel chain?
A peel chain is a chain of transactions in which a small part of an amount is split off each time and the rest moves on to a next wallet. This way the fraudster peels off small amounts layer by layer toward exchanges or payout points, while the principal sum keeps moving. The pattern looks innocent per step, but becomes recognisable once you see the whole chain. Our explanation of the peel chain describes in detail how this mechanism works.
What role do mixers play?
A mixer is a service that combines and redistributes crypto from many users to break the link between sender and recipient. Using a mixer is a strong signal that someone wants to obscure the origin of assets, although not every use is illegal by definition. For investigation, a mixer means the direct route is interrupted, which makes interpretation harder but not always impossible. What happens before and after the mixer often remains visible and meaningful.
Does a suspicious pattern prove that money laundering took place?
No, a suspicious pattern on its own does not prove that money laundering took place; it is an indication that requires context. The same technical steps can also have a legitimate explanation, for example managing multiple wallets or using a service to preserve privacy. That is why manual interpretation is essential: an automated tool can flag a pattern, but cannot judge what it means. We therefore always state honestly what the chain does and does not show.
Why is manual interpretation so important?
Manual interpretation matters because only a person can weigh the context, timing and interrelation of transactions. Tools deliver signals and scores, but do not draw a responsible conclusion about guilt or origin. In blockchain investigation, Paucitas combines automated signals with a manual analysis of the chain, so a pattern is understood as a whole. How that approach compares to purely automated work is described in our blog on manual blockchain investigation versus tools.
What can you do if you suspect money laundering?
If you suspect money laundering, you can have the transactions involved investigated and, where necessary, report it to the appropriate authorities. We map the patterns, place them in context and record in a traceable way what the chain shows. If it concerns assets spread across many wallets, our blog on tracing crypto across multiple wallets and mixers is also useful. Paucitas is a Dutch firm for blockchain investigation and crypto fraud investigation in Amsterdam and makes no legal judgments; we leave those to the competent authorities.
Paucitas B.V.
Weesperstraat 107
1018 VN Amsterda
E: paucitas@paucitas.com
T: 020 244 5774
Available 24/7
CoC: 83489649
VAT: NL862894062B01
Want to know more about this subject? Contact us
"*" indicates required fields
Frequently asked questions
Identifying crypto money laundering: how do I recognise the patterns?
You may recognise money laundering by patterns such as peel chains, splitting amounts, rapid pass-through transfers across many wallets and the use of mixers. These signals only gain meaning together and in context. Paucitas maps the patterns and interprets what they do and do not show.
What is a peel chain in crypto investigation?
A peel chain is a series of transactions in which a small part is split off each time while the principal sum moves on to a next wallet. This way amounts are drained step by step toward payout points. Viewed across the whole chain, the pattern becomes recognisable.
Does a suspicious transaction prove that money laundering took place?
No, a suspicious transaction is an indication and not proof of money laundering. The same steps can also have a legitimate explanation. Only manual interpretation in context makes clear what a pattern really means.
Can Paucitas follow transactions through a mixer?
A mixer interrupts the direct route, so following it completely is not always possible. What happens before and after the mixer, however, often remains visible and meaningful. We map those visible parts and honestly state where the chain stops.
Frequently asked questions for Paucitas about blockchain investigation and money laundering patterns
What are the most common money laundering indicators on the blockchain?
The most common indicators are splitting amounts, rapid pass-through transfers, combining sources and mixer use. Each signal alone says little; the combination in context makes it meaningful.
Can an ordinary user accidentally trigger a suspicious pattern?
Yes, legitimate use such as managing multiple wallets can technically resemble a suspicious pattern. That is why interpretation is needed before a conclusion is drawn.
Does a tool identify money laundering automatically?
A tool can flag patterns and give risk scores, but does not judge whether money laundering actually took place. That judgment requires manual analysis of the context.
Is using a mixer always illegal?
No, using a mixer is not illegal by definition, but it is a strong signal that someone wants to obscure origin. Context determines how it should be weighed.
Can Paucitas give an expert opinion on a suspicious chain?
Yes, we can investigate a suspicious chain and describe in a traceable way what the transactions show. We limit ourselves to the facts and leave legal judgments to the competent authorities.
What is the difference between a peel chain and an ordinary series of transactions?
In a peel chain a small part is systematically split off while the rest moves on, forming a recognisable drain pattern. An ordinary series of transactions lacks that systematic structure.
Do old transactions remain visible for investigation?
Yes, transactions remain permanently on the blockchain and can be investigated even years later. That makes reconstructing old chains possible.
Can money laundering be tracked across multiple blockchains?
Often yes, because transitions between blockchains via bridges and exchanges leave traces. We follow the chain as far as the data allows.
What happens when a chain ends at an exchange?
When a chain ends at an exchange, the public route stops there, but the exchange may have further information under certain conditions. That runs through the competent authorities, not through us.
Can Paucitas report to authorities on my behalf?
No, you or your lawyer make the report yourself. We deliver the factual substantiation that makes such a report more concrete and stronger.
How certain is a conclusion from blockchain investigation?
Certainty depends on how complete the chain is and whether there are interruptions. We always indicate how strong a finding is and where room for doubt remains.
Why can’t fraudsters launder money completely invisibly?
Because the blockchain is permanent and public, almost every step leaves a trace. Even concealment with mixers or many wallets often leaves visible start and end points.
Can a suspicious pattern wrongly implicate someone?
Yes, which is why Paucitas emphasises that a pattern is an indication and not proof. We interpret carefully to avoid legitimate behaviour being misread.
Does Paucitas work together with law enforcement or regulators?
We deliver independent substantiation that can be used by law enforcement and regulators. The powers and legal steps remain with those authorities.
What is the first step if I suspect money laundering?
The first step is a free intake in which we review the transactions and determine what investigation makes sense. Based on that we map the patterns and interpret them in context.