there is
mixing is not illegal in all cases/uses due to criminal use specifically.. because criminal use specific mixing is then called LAUNDERING
so theres your definition of criminal use of mixing... LAUNDERING
i'm genuinely curious why mixing is such a big deal for honest people. why do they even need to use it? give me one good use case.
however when using things that are regulated as mixing, they become instances of people intently trying to hide for many many reasons.. the funny part is when people appear elusive and try to hide, they actually get spotted and scrutinised more..
its like a bunch of people walking down mainstreet in public, people walk normally, pass-by and no one looks twice..
however the guy jutting around, dodging other people, hiding behind bushes, crawling behind parked cars, looks odd and people start to take notice.. this makes people then look more intently at the guy trying to hide.. thus defeating his own purpose
people can have many legal and lawful reasons to hide, some are just to avoid the wife finding out about the sex doll he bought with money he should have used to pay for her medical bill.. there are many innocent reasons people want to hide their funds from family or business partners that are not illegal but just embarrassing.. however if they want to do it right they need to learn how to do it properly to not cause more problems or get spotted more easily than just the normal way
i have never used a mixer or done tumbling for my main stash. yet no one can link my forum profile name to my stash even after many many years, i hide in plain sight by not doing the stupid things that get me noticed.
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the whole scheme that CRIMINALS do to promote that normal people should mix too, is simple..
criminals want normal peoples clean coins.. and the only way to get clean coins is con/scam normal people into thinking the normal people should use mixers.. and pretend that its ok for normal people to receive dirty coins..
however the hypocrisy of this is.. if its ok and not going to cause issues for handling dirty coins.. then why would criminals be trying so hard to offload their dirty coins
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as for the whole classifications of definitions.. this is where money services regulated and delegated to monitor their customers funds movements, the businesses dont just have a yes/no of "illegal" they have a score chart of suspicion.. where certain events, features and actions are rated as a level of suspicion which triggers internal investigation by the money service, which then they would be eyes-on looking closer if it reaches a threshold. and if they then find more info that raises the level then it escalates
coins from a dark market has a high threshold
just mixing has a lower level
just tumbling has a lower level
just single use address, by itself has a lower level.
however the culmination of different features can add up.
but just single use+tumbling wont result in a court order to allow authorities to request all customer data of a money services customer
its a culmination of lots of data and rating that raises things to a suspicion rating of a crime they can link the customer too, to then trigger authorities to investigate and if they have enough to suspect a crime then they ask the courts for a data access request order to get all info about a money service customer or/and freeze that customers assets and access to the service
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bitcoin is a public ledger.. there is no expectation of privacy in public
money(traditional) has never been expected to be private, nor property of the bearer. its always been scrutinised by taxmen for centuries and traditional money was patent and licenced by the kingdoms/governments of the time
bitcoin for a short period had a experience of not being defined as money/currency, and instead treated as private property(2009-2013)
however since 2014 bitcoin was treated as a currency and as such countries governmental and law authorities started gaining jurisdiction on the use of bitcoin, mainly at the gateways back to fiat, such as money service businesses