basically, crypto mixing is a service where tainted bitcoins can become anonymized bitcoins. bitcoin mixing, also referred to as bitcoin tumbling or bitcoin blending, is the process of using a service to make your bitcoin purchases and transactions untraceable. instantly mixing bitcoin is the only way to cover tracks and make your bitcoin transactions impossible to track. this protects against criminals, hackers, and activities prohibited by the law where bitcoin is involved, it also protects you against law enforcement. the huge amount of bitcoins on mixing services come from mining pools around the world.