I would like to know if i use Instant Exchange
https://exch.cx/ and convert my bitcoins to litecoin, will it serve as a mixing too and my coins can't be traced (act as a mixer) ?
Meaning if i do multiple transactions using that Instant Exchange and convert Bitcoin to Litecoin. (The destination address of LTC remains the same in all the transactions )
When exchanging non-privacy coins, some transactions on eXch still can be linked by external blockchain analysis, which can be done by correlating time, amount and a fiat equivalent between various chains. Anyway, in practice, this mostly applies to big amounts, while it's very improbable this technique could be efficient on insignificant amounts. We will probably implement an option to split outputs between multiple addresses to prevent these attacks.
It's worth to mention that we don't aggregate UTXOs on single addresses for BTC and LTC, which makes blockchain analysis more complicated to perform.
I recommend to use an MWEB address as a destination in your BTC to LTC exchange to increase your privacy after exchange.
However, eXch absolutely serves for mixing when you exchange some coin to XMR, which is a privacy coin that is proven to be untraceable.
Now, in regards to law enforcement requests:eXch was built with an idea to make operators identity disclosure practically impossible so the service can be resistant to law enforcement. Operational security was our priority #1 from the first steps of the project creation.
We have very strict data retention policies that can be compared to most mixers on this forum. We do not log IP addresses (having .onion domain is a proof for that) or any other user metadata and delete order database records 15 days after order completion. We also provide users with an option to request data deletion immediately after order completion which can be done by pressing the "Delete data" button at the order's page (you can find more information at
https://exch.cx/tos).
Keep in mind that we don't differ from any mixer on this forum in regards to risks associated with unwanted data disclosure, since any mixer is also a centralized entity that uses the same database technology as we do and a single database can become a weak point of any service anytime, independently of how many times their marketing speech repeats the words "privacy" and "anonymity". We don't use these words much and instead we use full disk encryption on all our servers to prevent any unwanted situations as much as possible. An unexplained reboot of some server is a sign that a server was compromised and it's a clear attempt to compromise our LUKS keys with a modified bootloader.
We do not cooperate with law enforcement nor have to do so, since we are an anonymous entity that works with cryptocurrency only. A few events that could serve as a proof:
In the first half of 2023, users deposited a total of 9,983 ETH (approximately $17.72 million) into eXch, and deposited a total of 6,608,354 ERC20 stablecoins (approximately $6.6 million) into eXch.
(Note: they were only able to gather these statistics on the Ethereum blockchain, since we use a single aggregation address
0xf1da173228fcf015f43f3ea15abbb51f0d8f1123 for all Ethereum & ERC-20 exchange operations)
We also have sufficient technical capabilities to mitigate DDoS attacks without recurring to Cloudflare, DDoS-Guard or any other third-party reverse proxy servers, which is something that most mixers on this forum don't or can't do.
Nevertheless, when some users ask us questions regarding BTC mixing in our support ticketing system, we always forward them to appropriate non-custodial CoinJoin solutions available on the market that we used ourselves in the past and that are proven to be the safest alternative to custodial mixers.