You may have asked yourself this question when you first started exploring cryptocurrency exchange.
At first glance, both an exchange and a mixer seem to do something similar: they accept funds from one wallet and then send assets to another. However, there is an important difference.
An exchange converts one asset into another. For example, USDT into BTC, cryptocurrency into fiat currency, or vice versa. A mixer, as a rule, returns the same asset or its equivalent, while attempting to make it more difficult to establish a connection between the incoming and outgoing transactions.
This raises the question: why use a mixer if mixer fees are higher than exchange fees, while the mixer provides only the same type of cryptocurrency instead of several different assets?
To answer this question, it is necessary to understand the purpose of these services, as well as the concepts of OpSec, privacy, and transaction anonymization. Exchanges and mixers solve different problems.
An exchange allows users to convert one asset into another: cryptocurrency into cryptocurrency, cryptocurrency into fiat currency, or vice versa. Its primary purpose is to execute the exchange at a specific rate and collect a fee.
A mixer serves a different function: it attempts to make it more difficult to establish a connection between the address from which the funds were sent and the address to which they were sent after processing.
This leads to another question: why pay a higher fee to break the connection between transactions if an exchange seems to handle this task by itself? How can anyone track a USDT-to-BTC exchange if the assets are on different blockchains?
Yes, the blockchains are different. However, that does not mean that it is impossible to establish a connection between the operations. Analysts examine not only the transactions themselves, but also their timing, amounts, and behavioral patterns.
For example, it may be possible to see that a user sent USDT to a specific exchange address and that, a few minutes later, a Bitcoin payout was made for approximately the equivalent amount, minus the fee. The exchange itself takes place on different blockchains, but the combination of timing, amount, fee, and addresses used may make it possible to link the operations to each other.
In addition, exchanges often store internal data about orders. If it is possible to construct a graph of a particular service's addresses across different blockchains and then gain access to its internal records, blockchain transactions can be matched with specific orders and payout destinations. After that, the user's addresses associated with the order on other blockchains and in other cryptocurrencies may become significantly easier to trace.
Mixers, in turn, provide a service designed to increase transaction privacy. Broadly speaking, two common models can be identified.
1. Pooling funds together
Incoming coins are combined with the assets of other users, after which the funds are distributed among outgoing addresses. This makes it more difficult to match a specific deposit with a specific withdrawal and disrupts the direct sequence of transactions. However, this model does not guarantee that the user will receive coins with a completely independent transaction history.
2. Replacing coins
This is how we operate, for example. Under this model, a client sends funds to designated addresses and specifies an address for receiving the payout. The service sends funds from another pool or from a prepared reserve, splitting the payout into several parts and applying a dynamic fee.
As a result, the outgoing transfer does not look like a direct continuation of the incoming one. For example, the blockchain may show that funds were sent to one address, while several hours later another address received several separate transactions: first 0.4 BTC, followed by another 0.9 BTC. As a result, it becomes very difficult to identify a consistent transaction pattern associated with the mixer’s addresses. There is no fixed fee amount, no exact match in the total amount, and no exact match in timing. Thousands of such transactions take place, so transactions from the mixer simply get lost in the blockchain.
An exchange is well suited to converting one asset into another, but it does not, by itself, guarantee that the connection between the incoming and outgoing operations cannot be established. It is also impossible to automatically assume that an exchange does not store information about orders, addresses, transaction times, IP addresses, or other data associated with users.
A mixer is primarily intended to make it more difficult to analyze the origin of funds and the connections between transactions. Its purpose is to make it extremely difficult to directly match an incoming operation with a specific payout.
Therefore, exchanges and mixers should be viewed as tools for different purposes:
- an exchange is used to convert assets;
- a mixer is used to make it more difficult to analyze the connection between incoming and outgoing transactions.
If the goal is specifically to increase privacy, it is important to consider not only the technical method used to process funds, but also what data the service collects, how long it stores that data, and what connections between orders, wallets, and users its operator may be able to reconstruct
At first glance, both an exchange and a mixer seem to do something similar: they accept funds from one wallet and then send assets to another. However, there is an important difference.
An exchange converts one asset into another. For example, USDT into BTC, cryptocurrency into fiat currency, or vice versa. A mixer, as a rule, returns the same asset or its equivalent, while attempting to make it more difficult to establish a connection between the incoming and outgoing transactions.
This raises the question: why use a mixer if mixer fees are higher than exchange fees, while the mixer provides only the same type of cryptocurrency instead of several different assets?
To answer this question, it is necessary to understand the purpose of these services, as well as the concepts of OpSec, privacy, and transaction anonymization. Exchanges and mixers solve different problems.
An exchange allows users to convert one asset into another: cryptocurrency into cryptocurrency, cryptocurrency into fiat currency, or vice versa. Its primary purpose is to execute the exchange at a specific rate and collect a fee.
A mixer serves a different function: it attempts to make it more difficult to establish a connection between the address from which the funds were sent and the address to which they were sent after processing.
This leads to another question: why pay a higher fee to break the connection between transactions if an exchange seems to handle this task by itself? How can anyone track a USDT-to-BTC exchange if the assets are on different blockchains?
Yes, the blockchains are different. However, that does not mean that it is impossible to establish a connection between the operations. Analysts examine not only the transactions themselves, but also their timing, amounts, and behavioral patterns.
For example, it may be possible to see that a user sent USDT to a specific exchange address and that, a few minutes later, a Bitcoin payout was made for approximately the equivalent amount, minus the fee. The exchange itself takes place on different blockchains, but the combination of timing, amount, fee, and addresses used may make it possible to link the operations to each other.
In addition, exchanges often store internal data about orders. If it is possible to construct a graph of a particular service's addresses across different blockchains and then gain access to its internal records, blockchain transactions can be matched with specific orders and payout destinations. After that, the user's addresses associated with the order on other blockchains and in other cryptocurrencies may become significantly easier to trace.
Mixers, in turn, provide a service designed to increase transaction privacy. Broadly speaking, two common models can be identified.
1. Pooling funds together
Incoming coins are combined with the assets of other users, after which the funds are distributed among outgoing addresses. This makes it more difficult to match a specific deposit with a specific withdrawal and disrupts the direct sequence of transactions. However, this model does not guarantee that the user will receive coins with a completely independent transaction history.
2. Replacing coins
This is how we operate, for example. Under this model, a client sends funds to designated addresses and specifies an address for receiving the payout. The service sends funds from another pool or from a prepared reserve, splitting the payout into several parts and applying a dynamic fee.
As a result, the outgoing transfer does not look like a direct continuation of the incoming one. For example, the blockchain may show that funds were sent to one address, while several hours later another address received several separate transactions: first 0.4 BTC, followed by another 0.9 BTC. As a result, it becomes very difficult to identify a consistent transaction pattern associated with the mixer’s addresses. There is no fixed fee amount, no exact match in the total amount, and no exact match in timing. Thousands of such transactions take place, so transactions from the mixer simply get lost in the blockchain.
An exchange is well suited to converting one asset into another, but it does not, by itself, guarantee that the connection between the incoming and outgoing operations cannot be established. It is also impossible to automatically assume that an exchange does not store information about orders, addresses, transaction times, IP addresses, or other data associated with users.
A mixer is primarily intended to make it more difficult to analyze the origin of funds and the connections between transactions. Its purpose is to make it extremely difficult to directly match an incoming operation with a specific payout.
Therefore, exchanges and mixers should be viewed as tools for different purposes:
- an exchange is used to convert assets;
- a mixer is used to make it more difficult to analyze the connection between incoming and outgoing transactions.
If the goal is specifically to increase privacy, it is important to consider not only the technical method used to process funds, but also what data the service collects, how long it stores that data, and what connections between orders, wallets, and users its operator may be able to reconstruct
