Roman Sterlingov, the operator of Bitcoin Fog, a crypto mixer used for illegal activities, has been sentenced to 12.5 years in prison.Bitcoin Fog processed over 1.2 million bitcoin transactions, involving crimes like drug distribution and hacking.Sterlingov faces a $395M fine and the seizure of over $1.7M in cryptocurrency and assets.The case reflects international efforts to combat cryptocurrency-based financial crime and marks a milestone in regulating digital currency.