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You are right, I even create a
thread recently on bitcoin discussion board, the thread is about MARA mining pool and there was a quote:
“By excluding transactions between nefarious actors, we can provide investors and regulators with the peace of mind that the bitcoin we produce is ‘clean’, ethical and compliant with regulatory standards,” Marathon said in a statement.
So theoretically this type of coins should be called clean bitcoin including the ones mined by miners as block reward. I am not implying MARA are confirming clean bitcoin transactions because their statement is not even entirely true for now, but just an illustration.