How to Conduct Due Diligence Before Using a Bitcoin Mixer

With mixers like Tornado Cash under investigation and facing sanctions, it is important to conduct due diligence before using a mixing service. In addition to understanding the features and benefits of these services, it is also essential to know about their risks.

According to research from blockchain analysis firm Chainalysis, the majority of bitcoins sent to mixers come from illicit addresses. The reason is clear: mixers are a great way to evade law enforcement.


Crypto mixers provide a valuable service for users who want to guarantee their right to privacy. They help to hide the origin and value of coins and prevent them from being listed as contaminated for having been linked in a criminal act. They work by creating a series of transactions that mix the coins and change their balance, which makes it impossible to trace their original source. However, they do not eliminate the risk of being used for illegal activities, and if investigators spot an alarming pattern, their operation can be deciphered.

While many people use bitcoin mixer for legitimate reasons, some are using them to launder stolen funds and engage in shady transactions. In addition, these services are noncustodial, which can make it more difficult for regulators to take action against bad actors. These factors are why bitcoin mixers are popular among cybercriminals.

For example, a darknet market called Hydra was shut down in 2022 by OFAC for laundering funds associated with illegal drug sales. The site also offered mixer-like services and facilitated the sale of stolen data and hacking tools.

In a typical bitcoin mixer, tainted coins are sent to the mixing service and mixed with a pool of clean coins. The service then transfers the pooled coins to new addresses for its customers. For example, a customer could deposit 3 BTC and receive 10 separate clean bitcoin addresses. The customer must pay a transaction fee of 3% to use the service.


The transparency of bitcoin mixers is a big concern for many cryptocurrency users. They are often used by people attempting to launder money or bypass law enforcement action. In fact, some of these services have been the subject of sanctions. These issues are the result of a combination of factors, including the failure to adequately protect user data and the use of faulty cryptography. It is important to choose a mixer that offers PGP-encrypted guarantees and has plenty of positive feedback from multiple sources on the internet.

In general, mixers work by obfuscating the audit trail of tainted coins. This is done by mixing a deposit with other deposits, thereby breaking the link between the original deposit and the resulting funds. This is intended to make it difficult for blockchain investigators to trace the original source of the tainted cryptocurrency.

However, this does not mean that all mixers are created equal. Some are better than others at hiding the transaction history of tainted coins, while some are not as good at this and can be deciphered by blockchain analysis tools. This is why it is important to research the service you’re considering before making a deposit. In addition, some mixers are centralized, while others are decentralized. This difference has a significant impact on privacy. Centralized mixers can reveal the IP address of users, while decentralized mixers do not.


The fees associated with bitcoin mixers are usually relatively high, and it’s important to understand why before using this service. This is because most mixers are custodial services, which means that once you deposit your coins into the mixer, the owner of the mixer will have control over them until they’re sent back to you. This can make it difficult to decide which mixers are trustworthy, and it’s also possible that your coins may be stolen during the mixing process.

The popularity of crypto mixers is increasing at a breakneck pace, but it’s not all for the best. Some of them are being linked to criminal activity and can be used by hackers, ransomware affiliates, and other illicit actors. As these services continue to grow in popularity, it’s crucial for individuals and institutions to understand their use cases and legal implications.

A popular mixing service on the DarkNet is Helix by Grams, which can be accessed via Tor. It charges a fee of around 3% to mix your coins, and it will send you a set of clean addresses proportional to your initial deposit. This makes it very difficult to trace your transactions, as you can’t connect the original exchange with the new ones.

However, it’s worth noting that centralized mixers can save data about their users, including IP and blockchain address. This can lead to a lot of issues, including banal theft and data harvesting by interested parties.


Security is an important aspect of any cryptocurrency exchange, and bitcoin mixers take many measures to protect their users. The most important step is ensuring that the mixer does not expose users’ personal information to anyone. This can help prevent hacking and extortion, as well as protect users from government surveillance.

Mixers also offer privacy features to protect users from tracing and identity theft. For example, some mixers require users to provide an email address to sign up for the service, which can be used to verify the user’s identity and protect against fraud. Moreover, the mixer’s website must be secure and encrypted to ensure that personal information is not accessible by hackers or authorities.

Another important feature of bitcoin mixers is that they obfuscate the trail of funds back to their original source. This is done by combining one user’s Bitcoins with those of other users, which can make it difficult for law enforcement agencies to track the source of funds. This process is similar to moving money through multiple banks in countries with strict bank secrecy laws.

While this security measures do not guarantee anonymity, they can help protect against extortion and robbery. They can also reduce the risk of losing your cryptoassets to hackers or governmental surveillance. However, the best way to maximize privacy levels is to use a decentralized mixer.

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