2,075 karma · joined December 9, 2015
(A) In cases involving illegal goods, illegal services, unlawful activities, and telemarketing and health care fraud schemes, the term “proceeds” means property of any kind obtained directly or indirectly, as the result of the commission of the offense giving rise to forfeiture, and any property traceable thereto, and is not limited to the net gain or profit realized from the offense.
I suppose the BTC itself would be covered under "property of any kind obtained directly or indirectly, as the result of the commission of the offense giving rise to forfeiture"
And the BCH split coins would fall under "and any property traceable thereto, and is not limited to the net gain or profit realized from the offense."
It would appear that such a seizure is legit as 'traceable' is infinitely flexible. But I'm not a lawyer so don't take my word for it.