I PM'ed one of their customers and he said they disclosed in their Telegram that they are under a DDoS attack. I asked him if I could post his whole PM here and he said he prefers to wait more before creating negative reviews ahead of time.

edit: they confirmed the DDoS attack on their thread.

Also, am I the only one that thinks it's shady that they unlocked, a user posted a random good review about them, they answered this user 1 minute later and locked it again? (p.s: all of his most recent posts from December and on are talking on SmartMixer's thread)

I noticed that the thread was locked yesterday. I was about to report the issue in the service discussion board but then i saw the weird pattern of how some low ranking accounts had posted in the thread (more like forced reviews) before the thread got locked, so, i thought to myself maybe it was the mods who locked the thread because of that.

Now it's even more weird to lock the thread when crisis like that arises. The Best thing they would have done would be to just make an update in the thread rather than lock it.

They seem to be suffering from a bug and do not want people to write/ask about it, and it may be a prelude to scamming people who use this site right now.
I don’t know if this user is saying the thing, but I quote part of it:

I do not think that this board is appropriate, as no fraud has occurred so far, it is better to move it to [urlhttps://bitcointalk.org/index.php?board=129.0]Reputation[/url]

While i do think smartmixer's owners are pretty incompetent up to a certain degree, (and i've stated this numerous times in the past regarding their "fake- (one could view their given explanation as "moderately") plausible.." mixing popups, their use of anti-DDOS services such as Cloudflare, and their use of potential sockpuppets, note: that is not proven, just an allegation some people have made.), I for one still would not blindly believe they got hacked, and if their database got hacked, you'd expect the service to be offline as well etc.
Without proof it sounds dubious.


Anyway, if you have a letter of guarantee... Well, keep us updated and post that as proof if they don't do anything about your case..

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Although, perhaps someone can help me here...

I just downloaded Smartmixer's letter of guarantee:

It's a JSON file that looks like this:
How can i verify this? What exactly is the message body, and what is the digital signature? Can anyone verify this signature for deposit address 3Eg3K6mmHZPUWzD222hxj4mtj5b6ws4WDr using above JSON in electrum / whatever?

I mean, am i retarded, or is this letter of guarantee actually a "internal" letter of guarantee? What are they talking about expiring a signature, or it only being valid during mixing? Are they nuts?

(Haven't tried myself but this feels like i would just be guessing, and it's late already, Well actually i did try, using the order hash as signature, deposit as signing adress, and comment as message, but it's not making much sense. Oh well, i'm rambling here. Should go.)



As opposed to a traditional letter of guarantee, which just looks like this, and can easily be verified??

I think they use extra * salt * in the hash.
Or, a certain public sequence (the order is unknown to us).

In any case, I have all their signatures issued - on hand. Moreover, I have used this mixer more than once before. And I'm a little swept away.

I'm waiting for the declared 48 ~ hours.

I read an article(not sure where it was from) that the USA considers all mixers illegal due to the money laundering aspect.

Wouldn't surprise me 1 bit if the government was involved here and also looking at other mixers.

Just speculation but someone could prob google and find the article I'm referring to. Not home or I would.

I don't think the FBI could have reasons to close any mixing service. At least not at the moment where there is no law prohibiting such a service. For a simple reason - the mixer cannot verify the customer.
However, it is possible that some government office has sent warnings to mixers that they will soon be banned. In my opinion, this is unlikely. It seems more real to me to introduce the need to KYC verification, but this would be synonymous with closing the mixer, as it would interfere with the basic function it does.

I'm not sure anyone can verify your claims, which was the entire point i was making yesterday.

if we look at the Letter Of Guarantee, it seems that the only people who can verify it are Smartmixer themselves, not a third party, as opposed to traditional letter's of guarantees.

Now if you ask me, that's a flawed implementation of a LOG, but apparently no one seems to care or have seen this as of now? ()


This is so funny. The funny thing being that i don't even know whether they did this intentionally or not.


Perhaps we can use BlockSci/WalletExplorer to cluster Smartmixer's deposit adresses and see whether they would match the claims you're making, but that probably wouldn't be completely foolproof.