Criminals laundered $8.6bn (£6.4bn) of cryptocurrency in 2021, up by 30% from the previous year, a report by blockchain data company Chainalysis says.
It says police could strike a “huge blow” by targeting key services used to launder cryptocurrency by criminals.
The company previously estimated criminals received a record $14bn in cryptocurrencies in 2021.
The UK’s National Crime Agency (NCA) told the BBC law forces are responding.
–BBC