How clean is this laundry?
Did they get cash out of ebay payments and *then* bitcoin? or straight from fraud accounts into bitcoin?
if they had the cash did they need the bitcoin layer?
"Where you get that £5m ?"
"Bitcoin windfall , got it at the exchange"
"Wheres the wallet?"
"here"
"oh *that* 5m , the chain says that came from lots of bitcoin deposits from these fraudulemt ebay scam bank accounts"
OR
"Wheres the wallet?"
"lost it"
"ok you're free to go" (in which case why not just say you got your suitcase full of cash out of bitcoin)
At the end of the day , dont you have to prove a legitimate method of earning your ill gotton millions , regardless of how the money moved from A to B?
"Laundering" doesent just mean moving it around