# Anonymity of deposit when XMR -\> BTC

**URL:** <https://bisq.community/t/anonymity-of-deposit-when-xmr-btc/11079>\
**Category:** Support\
**Created:** [September 11, 2021, 12:18am UTC](https://bisq.community/t/anonymity-of-deposit-when-xmr-btc/11079 "2021-09-11T00:18:04Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![morpholiv](https://bisq.community/letter_avatar/morpholiv/32/5_5575768a8748004e209b776fc1b2916d.png) [@morpholiv](https://bisq.community/u/morpholiv)\
**Post date:** [September 11, 2021, 12:18am UTC](https://bisq.community/t/anonymity-of-deposit-when-xmr-btc/11079/1 "2021-09-11T00:18:04Z")

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Hi,

I’m trying to make some BTC anonymous, and for that I tried to change BTC to XMR and back.

But then I realized, if I’m not wrong, that the deposit breaks the anonymity.

For exemple let’s say I have a non anonymous bitcoin address BTC1, and I want to buy bitcoins with moneros. I transfer funds for deposit from BTC1 to BTC2. Then the person who buys my Monero sends me bitcoins on BTC3. At this point there should be no link between my person and BTC3. But then Bisq sends back the deposit on BTC3, and so we can easily go up the chain to me : BTC3 → BTC2 → BTC1.

Am I wrong somewhere ? If not, how can I make the deposit to be sent back on another address ?

Hopefully i’m clear 😉

Thanks

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**Author:** ![MnM](https://bisq.community/user_avatar/bisq.community/mnm/32/257_2.png) [@MnM](https://bisq.community/u/MnM)\
**Post date:** [September 13, 2021, 7:24pm UTC](https://bisq.community/t/anonymity-of-deposit-when-xmr-btc/11079/2 "2021-09-13T19:24:35Z")

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You’re not wrong, the best privacy practice even for Bisq is to coinjoin before and after every trade.

> [@Best Practices Guide](https://bisq.community/t/best-practices-guide/10347/4):
>
> I didn’t know where to put that, too small for the wiki. Nice thread, I wish it keeps growing! Privacy TLDR: To maximize privacy, coinjoin pre and post sending to or withdrawing from Bisq wallet. KYC can’t be undone. A Bisq trade needs to use a security deposit that is temporary held on a the deposit address (together with trade funds) and that is returned to each of the trades when trade succeeds. On the blockchain, the security deposit is a link between previous and post trade state, that c…

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**Author:** ![morpholiv](https://bisq.community/letter_avatar/morpholiv/32/5_5575768a8748004e209b776fc1b2916d.png) [@morpholiv](https://bisq.community/u/morpholiv)\
**Post date:** [September 17, 2021, 8:04pm UTC](https://bisq.community/t/anonymity-of-deposit-when-xmr-btc/11079/3 "2021-09-17T20:04:13Z")

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Thanks for your answer !

Interesting, so is coinjoin enough to make bitcoins anonymous, or should I still change BTC to XMR and back and use coinjoined bitcoins for deposits ?

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**Author:** ![MnM](https://bisq.community/user_avatar/bisq.community/mnm/32/257_2.png) [@MnM](https://bisq.community/u/MnM)\
**Post date:** [September 29, 2021, 4:50pm UTC](https://bisq.community/t/anonymity-of-deposit-when-xmr-btc/11079/4 "2021-09-29T16:50:33Z")

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Trading BTC at Bisq still leaves some link for your BTC because of the security deposit.