Thank you all for answering! I will try to reply as much as possible.
Wow, there are so many options now. I remember installing and trying Bisq back when it was maybe even in beta, it barely had any orders. Is it possible to sell bitcoins for fiat or stablecoins there now? If it is, I'm not sure would I have to first exchange them for some altcoins, or it's enough to sell them straight away without needing to worry about linkage to the mentioned guy?
I'm assuming you didn't properly use the Coinjoin feature in Wasabi, so let's assume if your coins is still linked with the previous guy.
You're only concealing your coins, tracking back the previous transactions will make people know where the coins comes from. You actually need additional privacy tool if your intention to hide the trace, you can use Bisq to swap your BTC to XMR, then sell XMR to USD (or local currency used in your country).
You can directly sell your BTC using no KYC P2P or DEX, you coins will not be frozen, it's only lack of privacy.
I sent only a fraction to Wasabi as I was mainly curious of how it works. The bigger part went like: his wallet -> my generated wallet -> hardware wallet.
If I understood you correctly, basically it comes down to if I want to "unlink" them from the previous guy, I have to first swap them for XMR? I guess your last sentence explains if they were sold for USD (if that's even possible on Bisq) it could be tracked all the way back.
There are other service that will provide you with the same benefit of keeping your privacy safe. Not all of them are bad and are you 100% sure that the guy who got arrested was for being involved in Bitcoin? Keeping that aside, you can always mix it and then convert it into some other coins and then cash it out using either P2P transaction or using a centralized platform.
Doing it directly with a centralized platform will put you at a risk. So try to find some alternative option. If there's someone accepting transaction in personal wallet then you can do that transaction too.
If I got it correctly from this thread, aside from mixers (which I would like to skip) using DEX and buying XMR or some other coin is the best way "unlinking" them from his wallet? Actually, I have no idea why that guy got arrested, it could be something totally unrelated to Bitcoins, but I wouldn't want to test my luck, hence why I'm looking for a solution just in case.
I don't know why but I sense something bad here, I am not saying you have created this story but how can we verify that you are not telling lie about this whole scenario, you said you bought BTC face to face, but you still have made a transaction with that guy, can you provide that hash or transaction details so we could search about it. Because to find out why he got arrested and can you use those BTC, you have few options.
Go and ask that person or police or his relatives, or friends about why he got arrested, if you can't then try to trace back the funds which he sent you, try to find the source of those coins, if they are linking to some scam wallet, which is tagged as suspicious or of hackers then those BTC might cause you trouble and I will suggest you to abandon them although it is not easy to give away or waste money but you said those BTC are in small amount.
Which mean you could sweep them away, if you don't find a solid answer to above questions then it will be better to avoid making any trade in them, and using mixers for this might come in the type of money laundering and I will say don't use mixers for money laundering purposes, and many centralized exchanges don't accept funds from mixers.
I understand your point of view and indeed, you can't verify if this is true or not, but I don't force anyone to believe it. I could probably find a transaction id, but I really don't want to share it publicly online. Regarding the guy, I mentioned above, I have no idea why he got arrested, could be also something unrelated to Bitcoins. I heard about it in a casual conversation, the person who told me didn't know more than that. Except that one time, I had no contact with him, and now after so many years, even less. Maybe these coins are fine, maybe not, I have no idea. While you mentioned it, is there some list or website where it's possible to see those suspicious wallets?
Why do you think that? Isn't coinjoin basically mixing? I see some people on reddit stating their accounts got banned/blacklisted when CEXs saw their coins came from coinjoin. Trying coinjoin and then selling P2P, the same way I bought back then, I guess can possibly lead to losing funds, as the most, if not all buyers are using CEX, so their CEX might seize the funds. Or you thought using something from your suggestions and then selling on Bisq?
Buddy, you can better investigate first for what he got arrested back in time because you may be fearing for nothing. If there was really some kind of case related to Bitcoins, you should make a P2P trade or a cash trade with a retailer nearby you. hehe Am I doing right by recommending anything, anyway whatever OP posted in the context of that I think if there was a serious case about Bitcoin and OP's post is legitimate he's the victim and he has the right to get out of this trouble.
This is true, the fear could be unjustified. I have no idea why he got arrested in the first place (and have no way to check it), it might or might not be related to Bitcoins. I'm asking simply because I wouldn't want to risk it and would rather be safe than sorry. The problem with P2P trade I see is, if the other side uses CEX (which is highly likely), so once I send them the funds, they might seize them.
Send the Bitcoin to another non custodial wallet then from the non custodial wallet you can send to an exchange like Agoradesk, Bisq and Centralized Exchange like Binance and sell off your Bitcoin. And with that you will not have problem with the Mixer address though they can still traces the last address for transaction but it will not have too much effect from the direct sending from the Mixer.
You can still swap Bitcoin to another coin if you are using Trustwallet. Then you can sell them in the coin you have swapped.
Sorry I didn't understand this part, can you rephrase it please? If I understood correctly, you suggest sending to Agoradesk, Bisq or some CEX and to sell there? Where is the mixer in there?