1) Transferring to Fixed Float doesn't actually cover a trail, it's a 'statement' often used in indictments 'chain-hopping' as an example of 'layering/laundering' funds, thing is it doesn't do that for a number of reasons.
A) these centralised entities have internal books which Law Enforcement can request access to.
B) IP's are tied against wallets, for example, if a user sends 'dirty' eth to fixed float from their ledger/metamask etc wallet, and then receives 'clean' BNB in their BNB wallet in ledger/metamask etc Infura, Binance, and Ledger will all have the information such as device, IP etc which again is accessible to Law Enforcement on request.
C) Then there's the fact that Law Enforcement actually are part of the blockchain in either validation or nodes meaning they get the data as it hits the chain opposed to potentially polluted information by a third party - they set these up in 2019 if memory serves.
D) No your ETH can't be frozen in it's position but it can be flagged as 'dirty' and associated to a crime, which basically means the FBI (or equivalent) will 'allow' you to continue to flip this way and that way which helps them connect adjacent or unknown wallets, which leads to more wallets/parties, and allows ties a rope firmly around your neck when they present their case as 'x was laundering y'.
So... nope no way to hide... they say XMR but that's debatable since fluffypony has been providing information to the UK GCHQ two years ago under a non-prosecution agreement that leaked.
2) Don't know what you are involved in, don't want to know.
a) Just correcting your assumptions and hopefully lead you to the honest/legal path, as otherwise you are fish in a barrel.
But at this point and as time passes, it becomes a selected & targeted prosecution. The same as the contaminated currency doctrine:
Same as the Bitcoins the US Marshalls auctioned off from the seizure of Silk Road's bitcoins:
There is NO way to "clean" this other than claiming that because the US gov. "auctioned them off" it is now cleaned, which is absurd. The blockchain clearly shows they belonged to the Silk Road initially and the proceeds of a "malum prohibitum" (= wrong [as or because] prohibited") which is a Latin phrase used in law to refer to conduct that constitutes an unlawful act only by virtue of statute (some people decide this), as opposed to conduct that is evil in and of itself, or malum in se.)
The only beauty of this is that e.g. the suppliers in China pay NO attention to this. They sell a product and they get paid. They convert the profit into ¥ and reuse the principal to buy and sell again. The buyer gets products, e.g. CPUs, and sells them for cost + profit. Wash, rinse, and repeat.
Of course, keeping lots of money in ANY centralized coin or exchange within arms reach of Western "judicial leeches" is insanity!
they say XMR but that's debatable since fluffypony has been providing information to the UK GCHQ two years ago under a non-prosecution agreement that leaked.
I couldn't find any news on this. I knew he was arrested in the US on an arrest order from South Africa (non-crypto related as they claim - wink wink), but I could not find his relationship with the UK GHCHQ.
Also, this is why I insist on repeating why I stay the H*ll away from ANYONE who is openly on social media bragging or getting airtime! Let's face it, assume "Martians" (from Mars - not to offend anyone) had the power to freeze & confiscate the funds of anyone on Earth who had more than e.g. $10M (i.e. the target) and also the power to order mentally-weak Earthlings to also extradite these targets to Mars and judged in a Martian court by Martians. In other words, a (secret; tautology) Grand Jury convened by Martians, judged by Martian jurors, a Martian judge, a Martian prosecutor, a Martian defense attorney, a Martian bailiff, locked up in a Martian prison, forced to buy commissary from Martian companies at ridiculous markups etc etc.
Would anyone who had more than $10M be on social media bragging and being ostentatious knowing it would only be a matter of time before they get indicted, their funds frozen/confiscated, and extradited to Mars?